Connection method

Abstract

To provide a connection method that can easily connect a plurality of residential units. [Solution] A connection method for connecting one residential unit to another residential unit, wherein the residential unit is provided with a parapet 7, the parapet 7 comprising a parapet body (hanging hardware 71, parapet wall timbers 72, 73) and a fascia 74 covering the parapet body, and the method comprises: a horizontal arrangement step for arranging the one residential unit and the other residential unit horizontally so that the parapets 7 are parallel to each other; and a roof connection step for connecting the one residential unit to the other residential unit by attaching a roof connecting member 32 across the fascia 74 of the one residential unit and the fascia 74 of the other residential unit, and joining the parapet 7 provided on the one residential unit to the parapet 7 provided on the other residential unit.

Description

[Technical Field]

[0001] The present invention relates to a method for connecting multiple residential units. [Background technology]

[0002] Conventionally, wooden buildings formed by a single structural unit or by combining multiple structural units have been known (see, for example, Patent Document 1). This structural unit is formed by a three-dimensional frame having columns at the four corners, ceiling beams along the long sides and narrow sides that join the upper ends of the columns, and floor beams along the long sides and narrow sides that join the lower ends of the columns. A bearing wall panel is disposed adjacent to the columns. The bearing wall panel has a rectangular frame formed by two vertical members and two horizontal members, metal connectors that firmly connect the vertical members and the horizontal members, and plywood attached to both sides of the frame. The bearing wall panel is configured so that fasteners are passed through holes in the metal connectors of the bearing wall panel to firmly secure the bearing wall panel to the columns and / or beams, firmly connect structural units to each other, or firmly secure the structural unit to the foundation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4386885 Summary of the Invention [Problem to be solved by the invention]

[0004] Structural units are produced in a factory, transported to a construction site on a trailer, truck, or the like, and installed on a foundation with a base laid on it. The structural units are then connected to each other to form the desired wooden building. Therefore, since the structural units are connected to each other at the construction site, it is preferable that they can be connected easily. For example, in the case of Patent Document 1, the connecting metal fittings are built into the load-bearing wall panels, so it is necessary to connect the structural units to each other by inserting fasteners into holes provided in the connecting metal fittings, and then attach the plywood of the load-bearing wall panels, which is not easy. In particular, when structural units are used as emergency temporary housing, it is necessary to construct a large number of disaster-resistant structural units in a short period of time. There is also a growing demand for such structural units for use in camping, glamping, and other activities. Therefore, a simple method for connecting multiple structural units (hereinafter referred to as "living units") together is desired.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connection method that can easily connect a plurality of residential units. [Means for solving the problem]

[0006] The invention described in claim 1 is, for example, as shown in FIGS. 1 to 40, A method of connecting one residential unit to another residential unit, comprising: The residential unit 1,100 is provided with a parapet 7, The parapet 7 includes a parapet body (hanging hardware 71, parapet wall timbers 72, 73) and a coping 74 that covers the parapet bodies 71, 72, 73. a horizontal arrangement step of arranging the one residential unit 1A, 100A and the other residential unit 1B, 100B in a horizontal direction so that their parapets 7 are parallel to each other; Next, a roof connecting member 32 is attached across the fascia 74 of the one residential unit 1A, 100A and the fascia 74 of the other residential unit 1B, 100B, and the parapet 7 provided on the one residential unit 1A, 100A and the parapet 7 provided on the other residential unit 1B, 100B are joined, thereby connecting the one residential unit and the other residential unit. And, The coping 74 is formed in a substantially U-shaped cross section, covering both side surfaces of the parapet main bodies 71, 72, and 73 and the upper surfaces of the parapet main bodies 71, 72, and 73. It is characterized by:

[0007] According to the invention described in claim 1, the residential unit 1,100 is provided with a parapet 7, and by joining the parapet 7 provided on one residential unit 1A, 100A with the parapet 7 provided on the other residential unit 1B, 100B, the one residential unit 1A, 100A can be connected to the other residential unit 1B, 100B. Therefore, compared to joining a portion of one residential unit 1A, 100A other than the parapet 7 (for example, the roof) to a portion of the other residential unit 1B, 100B other than the parapet 7 (for example, the roof), the fit is better and multiple residential units can be easily connected. In addition, by simply lining up one residential unit 1A, 100A and the other residential unit 1B, 100B horizontally so that their parapets 7 are parallel, and attaching a roof connecting member 32 across the fascia 74 of one residential unit 1A, 100A and the fascia 74 of the other residential unit 1B, 100B, the parapet 7 provided on one residential unit 1A, 100A and the parapet 7 provided on the other residential unit 1B, 100B can be joined. Furthermore, the coping 74 is formed in a generally U-shape in cross section, covering both side surfaces of the parapet main bodies 71, 72, and 73 and the upper surfaces of the parapet main bodies 71, 72, and 73. Therefore, since a plurality of residential units can be connected horizontally without removing the cornice 74, the plurality of residential units can be easily connected.

[0008] The invention described in claim 2 is, for example, as shown in Fig. 25 and Fig. 26, in the connection method described in claim 1, By performing the horizontal arrangement step, the sleeve wall 8 provided on the one residential unit 1A, 100A and the sleeve wall 8 provided on the other residential unit 1B, 100B are arranged to be parallel to each other, After the horizontal placement step, the method is characterized by having a wall connection step in which a wall connection member 31 is attached across the sleeve wall 8 provided on one of the residential units 1A, 100A and the sleeve wall 8 provided on the other residential unit 1B, 100B.

[0009] According to the invention of claim 2, the sleeve wall 8 provided on one residential unit 1A, 100A and the sleeve wall 8 provided on the other residential unit 1B, 100B can be joined by simply arranging one residential unit 1A, 100A and the other residential unit 1B, 100B horizontally so that their parapets 7 are parallel, and attaching a wall connecting member 31 across the sleeve wall 8 provided on one residential unit 1A, 100A and the sleeve wall 8 provided on the other residential unit 1B, 100B. Therefore, the walls of multiple residential units can be connected to each other without removing the cover member (end grain cover 530) that configures the sleeve wall 8, making it possible to easily connect multiple residential units.

[0010] The invention described in claim 3 is, for example, as shown in FIG. 22 or FIG. 28, in the connection method described in claim 1 or 2, The parapet 7 has the coping 74 The parapet bodies 71, 72, and 73 Fix for Fixing member (connecting bolt 78) and a capping member (capping bracket 75) fixed to the parapet main bodies 71, 72, and 73; It is equipped with The fixing member 78 is a bolt that can be screwed into the cap board receiving member 75, The coping board 74 and the roof connecting member 32 are provided with bolt holes into which the fixing members 78 can be inserted, The capping board 74 is fixed to the parapet main bodies 71, 72, and 73 via the capping board receiving member 75 by inserting the fixing member 78 through the bolt hole of the capping board and screwing it into the capping board receiving member 75, In the roof connecting step, Remove the fixing member 78 from the parapet 7; The fixing member 78 is inserted through the bolt hole of the roof connecting member 32, passed through the bolt hole of the cap board 74, and screwed into the cap board receiving member 75, The fixing member 78 is used to fix the roof connecting member 32.

[0011] According to the invention described in claim 3, the fixing member 78 that fixes the coping board 74 can be removed from the parapet 7, and the fixing member 78 can be used to fix the roof connecting member 32 to the parapet 7. Therefore, there is no need to prepare a separate dedicated member for fixing the roof connecting member 32, and the fixing member 78 that fixes the coping board 74 does not become unnecessary when the roof connecting member 32 is installed, thereby reducing the effort and cost involved. [Effects of the Invention]

[0012] According to the present invention, multiple residential units can be easily connected together. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 10 is a diagram illustrating an example of use of a residential unit. [Figure 2] FIG. 2 is a diagram illustrating the configuration of a base frame. [Figure 3] FIG. 2 is a diagram illustrating the configuration of a metal joint. [Figure 4] FIG. 2 is a diagram illustrating the configuration of a floor portion. [Figure 5] FIG. 4 is a diagram illustrating the configuration of a wall portion. [Figure 6] FIG. 4 is a diagram illustrating the configuration of a wall portion. [Figure 7] FIG. 2 is a diagram illustrating the configuration of a connecting metal member. [Figure 8] FIG. 2 is a diagram illustrating the configuration of a hanging hardware. [Figure 9] FIG. 10 is a diagram illustrating the state in which a hanging hardware is attached to a connecting hardware. [Figure 10] FIG. 10 is a diagram illustrating the state in which a hanging tool is attached to a hanging hardware. [Figure 11] 1 is a diagram illustrating the configuration of a wall wood panel for an opening. FIG. [Figure 12] FIG. 2 is a diagram illustrating the configuration of the outer shell of a residential unit. [Figure 13] FIG. 2 is a diagram illustrating the configuration of a roof portion. [Figure 14] FIG. 2 is a diagram illustrating the configuration of the interior and exterior. [Figure 15] FIG. 2 is a diagram illustrating the configuration of the interior and exterior. [Figure 16] FIG. 2 is a diagram illustrating the configuration of the interior and exterior. [Figure 17] FIG. 2 is a diagram illustrating the configuration of the interior and exterior. [Figure 18] FIG. 2 is a diagram illustrating the configuration of the interior and exterior. [Figure 19] This is a diagram explaining the configuration of the exterior near the parapet and sleeve wall, the configuration of the eaves gutter, and the configuration of the wall-stopping accessories. [Figure 20] FIG. 10 is a diagram illustrating the configuration of the exterior near the sleeve wall. [Figure 21] FIG. 10 is a diagram illustrating the configuration of the end grain cover. [Figure 22] 1 is a diagram illustrating the exterior configuration of the upper end (near the parapet) of the residential unit and the exterior configuration of the lower end of the residential unit. FIG. [Figure 23] 10A and 10B are diagrams illustrating the configuration of a cap receiving bracket. [Figure 24] FIG. 10 is a diagram illustrating the configuration of a cap rail. [Figure 25] 10A and 10B are diagrams illustrating the configuration of a wall connecting member. [Figure 26] 10A and 10B are diagrams illustrating the configuration of a wall connecting member. [Figure 27] 10A and 10B are diagrams illustrating the configuration of a roof connecting member. [Figure 28] 10A and 10B are diagrams illustrating the configuration of a roof connecting member. [Figure 29] 10A and 10B are diagrams illustrating the configuration of the ceiling connecting member and the connecting floor panel. [Figure 30] FIG. 2 is a diagram illustrating the configuration of a connecting wall panel. [Figure 31] FIG. 10 is a diagram illustrating a modified example of the residential unit. [Figure 32] FIG. 10 is a diagram illustrating the configuration of the base frame of the second floor. [Figure 33] 10A and 10B are diagrams illustrating the configuration of the floor and walls of the second floor. [Figure 34] FIG. 10 is a diagram illustrating the configuration of the wall portion of the second floor. [Figure 35] FIG. 10 is a diagram illustrating connection in the vertical direction. [Figure 36] FIG. 2 is a diagram illustrating the configuration of a cross flat seat. [Figure 37] 10A and 10B are diagrams illustrating the configuration of the header panel cover. [Figure 38] 10A and 10B are diagrams illustrating the configuration of the header panel cover. [Figure 39] 10A and 10B are diagrams illustrating modified examples of the header panel cover. [Figure 40] 10A and 10B are diagrams illustrating modified examples of the header panel cover. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are subject to various limitations that are technically preferable for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Furthermore, the following embodiments (including modified examples) and illustrated examples may be combined as much as possible.

[0015] In Fig. 1 and other figures, reference numeral 1 denotes a residential unit (mobile unit), which is a unit that can be easily relocated or installed and in which people stay for a certain period of time. This residential unit 1 is transported to a desired location on a chassis 140, and is used as a residence, accommodation facility, restaurant, or the like at the transport site without being removed from the chassis 140. In other words, the residential unit 1 can be used as a trailer house together with the chassis 140. Alternatively, the residential unit 1 can be removed from the chassis 140 at the transport site and installed on a building foundation for use (see modified example). Furthermore, the residential unit 1 is used either by itself with a residential space S inside, or by connecting multiple units to form an expanded residential space S. The residential space S can be used as a single room (room space), or as multiple rooms (room spaces) by providing partitions. The residential unit 1 in this embodiment is used in a state where adjacent long sides of two residential units 1 (1A, 1B) are connected to each other via connecting means 30. The manner in which two residential units 1 (1A, 1B) are connected using the connecting means 30 includes connecting the adjacent long sides of the two residential units 1A, 1B as in this embodiment, as well as connecting the adjacent long sides of three or more residential units 1.

[0016] The chassis 140 is a transport platform that allows the residential unit 1 to be moved by a towing vehicle (not shown) while it is loaded with the residential unit 1, and is equipped with a unit installation section 141 on which the residential unit 1 is mounted and fixed, and wheels 142 that support the unit installation section 141. The unit installation portion 141 is a frame body or a plate-like body whose dimensions are set so that its outer peripheral edge extends outward beyond the lower edge of the residential unit 1. The wheels 142 are adapted to specifications that allow the chassis 140 to be used for transporting residential units. In this embodiment, as shown in Fig. 1, the wheels 142 have tires, but this is not limiting. The wheels 142 may have sled portions to enable transportation in cold regions or polar regions, or may have endless tracks (also called caterpillars) to enable transportation on rough ground such as construction sites, farmland, and deserts.

[0017] The residential unit 1 of this embodiment includes a base frame 2 in the form of a substantially rectangular frame, and a unit main body 3 in the form of a substantially rectangular box supported by the base frame 2. The unit main body 3 is made of wood and includes a plurality of wood panels 41, 51, 61 with heat insulating properties. These plurality of wood panels 41, 51, 61 form the outer shell of the residential space S, which is a room, and constitute the floor, walls, and ceiling (or roof). The residential unit 1 is manufactured in a factory, mounted on a chassis 140, and transported to a desired location. Various components that can be attached to the residential unit 1 (building materials such as interior and exterior finishing materials, water and gas pipes, electric lines, communication lines, etc.) may be attached in the factory or on-site.

[0018] The base frame 2 is formed by assembling steel frame materials into a substantially rectangular frame shape. In this embodiment, the base frame 2 is made of steel, but is not limited to this and may be made of reinforced concrete or steel-reinforced concrete.

[0019] The unit body 3 is formed by assembling a plurality of pillars 52 and a plurality of wooden panels into a roughly rectangular box shape. The plurality of wooden panels are outer shell components with insulating properties made of wood with low thermal conductivity, and form the outer shell of the residential unit 1. The multiple wood panels in this embodiment include multiple floor wood panels 41 that form the floor portion 4 of the unit body 3, multiple wall wood panels 51 that form the wall portion 5 of the unit body 3, and multiple roof wood panels 61 that form the roof portion 6 of the unit body 3.

[0020] [Base frame configuration] FIG. 2 is a diagram illustrating the configuration of the base frame 2, where (a) is a plan view, and (b) and (c) are side views. As shown in Fig. 2, the base frame 2 is configured to include a short-side frame member 21 that is long along the short side direction of the residential unit 1, and long-side frame members 22, 23 that are long along the long side direction of the residential unit 1. In addition, metal joints 24 are integrally provided on both ends of the short-side frame member 21. In other words, the short-side frame member 21 and the long-side frame members 22, 23 are connected via the metal joints 24. These steel frame members 21 to 24 that make up the base frame 2 are rigidly joined by bolts, welding, etc.

[0021] Channel steel (or lip channel steel) consisting of a web, an upper flange provided at the upper end of the web, and a lower flange provided at the lower end of the web is used as the short-side frame member 21 and the long-side frame members 22, 23. The web is located on the inside, and the upper and lower flanges protrude outward from the upper and lower ends of the web. The web, upper flange, and lower flange are provided with a plurality of bolt holes for fastening components with bolts as required. Stiffeners and other reinforcement devices are also provided as appropriate. In this embodiment, channel steel is used as the short-side frame member 21 and the long-side frame members 22, 23, but this is not limitative and other shaped steel may also be used.

[0022] The long-side frame members 22, 23 include a first long-side frame member 22 and a second long-side frame member 23 that is longer than the first long-side frame member 22. In this embodiment, four first long-side frame members 22 are used and two second long-side frame members 23 are used. In addition, four short-side frame members 21 are used in this embodiment. The two short-side frame members 21 and the two first long-side frame members 22, including metal joints 24, form a rectangular frame body. Two such rectangular frame bodies are provided, and one rectangular frame body is connected to the other rectangular frame body by two second long-side frame members 23. In other words, of the four short-side frame members 21 lined up in the long side direction of the base frame 2, the two short-side frame members 21 located in the center and the two second long-side frame members 23, including metal joints 24, form a rectangular frame body. The base frame 2 also includes horizontal braces 25 that are arranged so as to connect the diagonal lines of the rectangular frame body that is configured to include the plurality of frame members 21, 22, and .

[0023] 3A to 3C are diagrams illustrating the configuration of the metal joint 24, where (a) is a plan view, (b) is a side view, and (c) is a cross-sectional view. The metal joint 24 is a rectangular box with one side open. As shown in Figure 3(b), the interior of the metal joint 24 is divided into two spaces, and a square tube member 241 is disposed in one space. Furthermore, during the assembly work of the residential unit 1, components such as bolts are inserted through the opening of the metal joint 24, or hands, tools, etc. are inserted into the other space. The square tube members 241 are used when loading and unloading the residential unit 1 onto or from the chassis 140, etc., using a jacking device. Specifically, for example, one end of a rod-shaped member is inserted into the square tube members 241 of each of the multiple joint metal members 24 (e.g., the joint metal members 24 at the four corners) of the base frame 2, and the other end of each rod-shaped member is lifted with a jacking device, thereby jacking up the residential unit 1. This makes it possible to lift the residential unit 1 with a jacking device even in a situation where it is not possible to place a jacking device directly below the residential unit 1.

[0024] As shown in Figure 3(a), the connecting metal fittings 24 are arranged so that the openings of the connecting metal fittings 24 face outward and the square tube member 241 is located on the side of the first long-side frame member 22. Therefore, when looking into the inside of the connecting metal fittings 24 through the openings of the connecting metal fittings 24, the connecting metal fittings 24 include a first connecting metal fitting 24A in which the square tube member 241 is located on the left side, and a second connecting metal fitting 24B in which the square tube member 241 is located on the right side. An upper circular hole 242 penetrating the upper surface of the metal joint 24 is formed in the upper surface of the metal joint 24. A stud bolt 56 that connects the base frame 2 and the unit body 3 is passed through this upper circular hole 242.

[0025] The side end faces of the metal joints 24 (the side end faces opposite to the side on which the rectangular tube members 241 are arranged) are not flush with the side end faces (tip faces of the upper flange and the lower flange) of the short-side frame members 21 that are continuous with the metal joints 24, but rather protrude outward from the side end faces. That is, as shown in FIG. 3( a), a step D1 is provided between the metal joints 24 and the short-side frame members 21 that are continuous with the metal joints 24. In addition, the short-side end faces of the floor section 4 of the unit main body 3 are substantially flush with the side end faces (tip faces of the upper flange and the lower flange) of the short-side frame members 21. Therefore, as shown in FIG. 3( b), a step D2 is provided between the metal joints 24 at the four corners of the base frame 2 and the floor section 4 that rests on the base frame 2. In this way, by providing an area on the top surface of the base frame 2 that does not come into contact with the floor section 4, it is easier to distribute the load from above on the base frame 2.

[0026] An elongated hole 243 penetrating the lower surface of the metal joint 24 is formed in the lower surface of the metal joint 24. This elongated hole 243 is a twist lock elongated hole, and is used when connecting the residential unit 1 to the chassis 140 or the like. When connecting the residential unit 1 to the chassis 140, first, the residential unit 1 is lifted with a crane or the like (or lifted with a jack or the like) and placed on the chassis 140 with the positions of the multiple elongated holes 243 of the residential unit 1 aligned with the positions of the multiple twist locks provided on the chassis 140. Then, the twist locks inserted into the elongated holes 243 are rotated to switch the twist locks from the released state to the locked state. By performing this switching operation for each of the multiple twist locks, the residential unit 1 can be secured to the chassis 140.

[0027] A pair of protrusions 244 are provided inside the connecting metal fitting 24 (on the upper surface of the lower surface of the connecting metal fitting 24). These protrusions 244 are used when connecting multiple residential units 1 in the vertical direction to form a multi-story structure (see modified example). The protrusions 244 are provided near the elongated holes 243, but are located so as not to interfere with the rotation of the twist locks from the released state to the locked state (and from the locked state to the released state). Specifically, the protrusions 244 are located so as not to interfere with the rotation of the twist locks from the released state to the locked state in either the clockwise or counterclockwise direction (counterclockwise in the example shown in FIG. 3), but to interfere with the rotation in the other direction (clockwise in the example shown in FIG. 3). In addition, a lower circular hole 245 is formed in the lower surface of the joining metal 24, penetrating the lower surface, and a nut 245a is fixed by welding or the like inside the joining metal 24 (on the upper surface of the lower surface of the joining metal 24) at a position corresponding to the lower circular hole 245.

[0028] [About wood panels] A unit body 3 made up of multiple wood panels with heat insulating properties is mounted and fixed to the base frame 2. In this embodiment, the multiple wood panels include floor wood panels 41, wall wood panels 51, and roof wood panels 61.

[0029] The basic structure of a wood panel is that vertical and horizontal frames A and B are assembled into a rectangular shape, and auxiliary beams C are assembled vertically and horizontally inside the rectangular frame made up of vertical and horizontal frames A and B to form a panel frame, and facing materials D and E are attached to one or both sides of this panel frame, creating a hollow structure. Furthermore, this hollow interior is usually filled with insulating material F, such as glass wool or rock wool. In addition, the vertical and horizontal frame materials A and B, auxiliary crosspiece material C, and face materials D and E that make up the wood panel are firmly joined together with adhesive.

[0030] The vertical frame A refers to a frame extending in the long side direction of a rectangular frame body assembled into a rectangular shape, and the horizontal frame B refers to a frame extending in the short side direction. These frame materials A and B may be used in a stack of multiple sheets as needed, for example, to improve the rigidity of the wooden panel or to expand the fixed surface.

[0031] The auxiliary crosspieces C are attached to the rectangular frame made up of the vertical and horizontal frame members A and B as needed to improve the rigidity of the wood panel, and may be attached only in the vertical direction (longer side direction) or only in the horizontal direction (short side direction). Also, they do not have to be attached to the rectangular frame at all. Similar to the frame materials A and B, the auxiliary crosspiece material C may also be used in a stack of multiple sheets as required.

[0032] One of the face materials D and E is provided on the exterior (outdoor) side, and the other on the interior (living space S) side, and for the sake of convenience in this embodiment, face material D is provided on the interior side (hereinafter referred to as the interior face material D) and face material E is provided on the exterior side (hereinafter referred to as the exterior face material E). Furthermore, face materials D and E do not necessarily have to be provided on both sides of the frame body, and may be provided on only one side.

[0033] As mentioned above, fiber-based insulating materials such as glass wool and rock wool are mainly used as the insulating material F, but this is not limited to these, and foamed resin-based insulating materials such as phenol foam and polyethylene foam may also be used. When components are installed inside the wood panel, the insulating material F is installed to avoid those components, but it is desirable that it be installed so as to surround those components to prevent a decrease in insulating performance.

[0034] Through holes are appropriately formed in the frame materials A and B, the auxiliary crosspiece material C, and the surface materials D and E, and are used to pass water and gas pipes, electrical wires, and communication lines through them, and when installing wood panels. The through holes formed in the wood panel include through holes through which bolts are passed when fixing the wood panel to other components, and such through holes are formed in appropriate locations. When fastening with bolts (bolt connection), a member or structure such as a nut with a female thread that engages with the male thread of the bolt is used as appropriate.

[0035] Anti-termite sheets and moisture-permeable waterproof sheets are attached to the wood panels as appropriate. In particular, it is desirable to attach these sheets to the outer surface material E of the wood panels. Instead of anti-termite sheets, the wood panels may be formed by impregnating the frame materials A, B and auxiliary crosspiece material C with anti-termite agents.

[0036] (Wood floor panels) FIG. 4 is a diagram illustrating the configuration of the floor portion 4, where (a) is a plan view, (b) is a side view, and (c) and (d) are vertical cross-sectional views. As shown in FIG. 4, the floor section 4 of the unit body 3 includes a floor wooden panel 41 and a half base 42. The dimension of the short side of the floor section 4 is set to be approximately the same as the dimension of the short side of the base frame 2. On the other hand, the dimension of the long side of the floor section 4 is set to be shorter than the dimension of the long side of the base frame 2 (shorter by two steps D1). That is, the long side end faces of the floor section 4 are approximately flush with the side end faces (tip faces of the upper flanges and the lower flanges) of the long side frame members 22 and 23 of the base frame 2, and the short side end faces of the floor section 4 are approximately flush with the side end faces (tip faces of the upper flanges and the lower flanges) of the short side frame members 21 of the base frame 2. As shown in FIG. 3(b) and FIGS. 4(b) to 4(d), the floor section 4 is placed on the base frame 2 and bolted to the base frame 2.

[0037] The floor wood panel 41 in this embodiment comprises at least vertical and horizontal frame members A and B, an inner surface member D, and a heat insulating member F. The inner surface member D is provided on the upper side. The floor wood panels 41 in this embodiment include a first floor wood panel 41A and a second floor wood panel 41B that is narrower than the first floor wood panel 41A. The wider floor wood panel 41 (41A) has longer cross bars B and more auxiliary cross bars C than the narrower floor wood panel 41 (41B).

[0038] As shown in Figure 4(a), the first floor wood panel 41A is arranged so that the long side direction of the first floor wood panel 41A is aligned with the short side direction of the base frame 2, and a total of six first floor wood panels 41A are lined up in the long side direction (left and right direction) of the base frame 2. The second floor wood panels 41B are arranged so that the long side direction of the second floor wood panel 41B is aligned with the short side direction of the base frame 2, and one second floor wood panel 41B is located adjacent to the first floor wood panel 41A that is at the left end of the six first floor wood panels 41A, and another second floor wood panel 41B is located adjacent to the first floor wood panel 41A that is at the right end of the six first floor wood panels 41A. Adjacent wooden floor panels 41 are in contact with each other at the vertical frame materials A, so by fastening these vertical frame materials A together with screws or bolts, all of the wooden floor panels 41 (41A, 41B) are joined together.

[0039] The half base 42 is, for example, a square timber, and as shown in Fig. 4(a), is provided on the periphery of the connected floor wooden panel 41. As shown in Figs. 4(b) to 4(d), the end (frame members A and B) of the floor wooden panel 41 to which the half base 42 is attached is placed together with the half base 42 on the upper flanges of the frame members 21, 22, and 23 of the base frame 2 and is bolted to the upper flanges. Specifically, the floor section 4 is fixed to the upper flanges of the frame members 21, 22, and 23 by bolts that pass through the joints between the floor wooden panel 41 and the half base 42. As shown in FIGS. 4(c) and 4(d), the wall wood panel 51 is disposed across the floor wood panel 41 and the half base 42.

[0040] (Wood panel for walls) 5 and 6 are diagrams illustrating the configuration of the wall portion 5, with FIG. 5 being a cross-sectional view and FIG. 6 being a side view. As shown in Figure 5, the wall 5 of the unit body 3 has a pair of opposing U-shaped wall bodies 50. The U-shaped wall body 50 is formed by assembling wall wood panels 51 and pillars 52 in a roughly U-shape in plan view, and is positioned so that two corners of the U-shaped wall body 50 coincide with two corners of the shorter sides of the floor body 4. In other words, one U-shaped wall body 50 and the other U-shaped wall body 50 are positioned so that their open sides face each other. The U-shaped wall bodies 50 are fastened to the floor body 4 with screws or bolts while placed on the floor body 4.

[0041] 6, the pillars 52 are erected above the metal joints 24 of the base frame 2 via the wooden floor panels 41 and the half base 42. In this embodiment, the base frame 2 has eight metal joints 24, so a total of eight pillars 52 are provided in the wall section 5. Specifically, one U-shaped wall 50 has four pillars 52, two of which are located in the corners and the remaining two are located at the open end.

[0042] The wall wood panel 51 of this embodiment comprises at least vertical and horizontal frame members A and B, side surface members D and E, and a heat insulating material F. The U-shaped wall 50 is provided with wall wood panels 51, which are short-side wall wood panels 51A and 51B located between two corner pillars 52, and long-side wall wood panels 51C and 51D located between the corner pillar 52 and the open-side pillar 52. Of the short-side wall wood panels 51A, 51B arranged along the short side of the base frame 2, the two short-side wall wood panels 51B located at the ends (both ends), i.e., the short-side wall wood panel 51B adjacent to the pillar 52 located at the corner, have a width that is shorter and narrower than the width of the short-side wall wood panels 51A arranged in other locations. Also, of the long-side wall wood panels 51C, 51D arranged along the long side of the base frame 2, the long-side wall wood panel 51D adjacent to the pillar 52 located at the corner has a width that is shorter and narrower than the width of the long-side wall wood panel 51C arranged in other locations. Note that the wide wall wood panels 51 (51A, 51C) have longer cross frames B and more auxiliary cross members C than the narrow wall wood panels 51 (51B, 51D).

[0043] The vertical frames A of adjacent wall wood panels 51 are in contact with each other, and these vertical frames A are fastened together with screws or bolts. In addition, the vertical frames A of adjacent wall wood panels 51 are in contact with pillars 52, and these vertical frames A are fastened together with screws or bolts. In this way, the wall wood panels 51 (51A, 51B, 51C, 51D) and pillars 52 are connected together to form a U-shaped wall body 50. The U-shaped wall 50 has two corners each equipped with a sleeve wall timber 53 that protrudes outward in the long side direction of the base frame 2 (unit body 3). Specifically, a long square timber is attached as the sleeve wall timber 53 along the height direction of the column 52 to the side surface of the column 52 arranged at the corner, opposite to the side surface that contacts the long side wall wood panel 51D. Furthermore, the U-shaped wall 50 is provided with a support member 54 at each of the two open end portions. Specifically, a long rectangular timber is attached as the support member 54 along the height direction of the pillar 52 to the side of the pillar 52 arranged at the open end portion opposite the side that contacts the long side wall wood panel 51C. As shown in FIG. 3( b ) and FIG. 6 , the pillar 52 of the U-shaped wall 50 includes a pillar wood 521 which is the pillar body, and connecting metal fittings 522 attached to both ends of the pillar wood 521 .

[0044] 7A and 7B are diagrams illustrating the configuration of the connecting hardware 522, where (a) is a side view of the residential unit 1 as seen from the long side, and (b) is a side view of the residential unit 1 as seen from the short side. As shown in FIG. 7, the connecting hardware 522 includes a hardware body 10 and a pair of side plate portions 11 rising from opposing side surfaces of the hardware body 10. The hardware body 10 is a rectangular box-like structure with a square cross section, consisting of a pair of vertical walls, a first horizontal wall 10a, and a second horizontal wall 10b. The first horizontal wall 10a is positioned closer to the pillar wood 521 than the second horizontal wall 10b. A through hole 10c is formed in the approximate center of the second horizontal wall 10b.

[0045] A fixing plate 11a is formed integrally with the side plate 11 at one end of the side plate 11, and this fixing plate 11a is fixed to the vertical wall of the hardware body 10 by welding or the like. As shown in Figure 7(a), the width of the side plate 11 is slightly smaller than the width of the fixing plate 11a, and this side plate 11 has a plurality of holes formed therein. Furthermore, the width of the fixing plate 11a, i.e., the width of the vertical wall portion of the hardware body 10, is slightly smaller than the width of the wooden pillar 521. Therefore, when the wall wood panel 51 is attached to the pillar 52, a gap is formed between the tip of the pillar 52 (the hardware body 10 and fixing plate 11a) and the wall wood panel 51, and this gap is filled with insulating material 55. That is, in this embodiment, in order to improve the insulating performance, a space is provided at the tip of the pillar 52 (the portion consisting only of the hardware) for arranging the insulating material 55. Also, as a result, one of the pair of openings in the connecting hardware 522 is blocked by the insulating material 55.

[0046] The pillar wood 521 is a square lumber with a square cross section. The upper and lower ends of one side of the pillar wood 521 and the upper and lower ends of the side opposite the one side are notched by the thickness of the side plate 11 (board thickness). In other words, the side of the pillar wood 521 that comes into contact with the side plate 11 is notched. Therefore, when the upper end of the pillar wood 521 is inserted between the pair of side plates 11 of the connecting hardware 522, the side surfaces of the pillar wood 521 and the surfaces of the side plates 11 become substantially flush with each other, as shown in Figure 7(b). Similarly, when the lower end of the pillar wood 521 is inserted between the pair of side plates 11 of the connecting hardware 522, the side surfaces of the pillar wood 521 and the surfaces of the side plates 11 become substantially flush with each other.

[0047] Then, the upper end of the pillar wood 521 is inserted between the pair of side plates 11, and with the upper end surface of the pillar wood 521 abutting against the first horizontal wall 10a of the hardware body 10, nails are inserted through each of the multiple holes formed in the side plates 11 and driven into the pillar wood 521, thereby fixing the connecting hardware 522 to the upper end of the pillar wood 521. Similarly, the lower end of the pillar wood 521 is inserted between the pair of side plates 11, and with the lower end surface of the pillar wood 521 abutting against the first horizontal wall 10a of the hardware body 10, nails are inserted through each of the multiple holes formed in the side plates 11 and driven into the pillar wood 521, thereby fixing the connecting hardware 522 to the lower end of the pillar wood 521.

[0048] Of the upper and lower connecting hardware 522 that the pillar 52 has, the lower connecting hardware 522 is used to connect the U-shaped wall body 50 and the base frame 2. Specifically, a stud bolt 56 that connects the U-shaped wall body 50 and the base frame 2 is passed through a through hole 10c provided in the lower connecting hardware 522. 3(b), the stud bolt 56 penetrates the end of the floor 4 (the joint between the floor wooden panel 41 and the half base 42), and the lower end of the stud bolt 56 is inserted into the upper circular hole 242 provided in the connecting metal fitting 24 of the base frame 2, and a nut 56a inserted from an opening in the connecting metal fitting 24 is screwed into the lower end. At the same time, the upper end of the stud bolt 56 is inserted into the through hole 10c provided in the lower connecting metal fitting 522, and a nut 56b inserted from an opening in the connecting metal fitting 522 (the opening not blocked by the insulating material 55) is screwed into the upper end. This fixes the pillar 52 of the U-shaped wall body 50 (i.e., the pillar 52 of the unit main body 3) to the base frame 2 (and the floor 4).

[0049] On the other hand, of the upper and lower connecting hardware 522 that the pillar 52 has, the upper connecting hardware 522 is used to connect the hanging hardware 71 to the U-shaped wall body 50. The hanging hardware 71 is used to attach a hanging tool 150 that is used for lifting the residential unit 1 (loading and unloading the residential unit 1 onto the chassis 140, etc.).

[0050] Figure 8 is a diagram explaining the configuration of the hanging hardware 71, Figure 9 is a diagram explaining the state in which the hanging hardware 71 is attached to the connecting hardware 522, and Figure 10 is a diagram explaining the state in which the hanging tool 150 is attached to the hanging hardware 71. As shown in Fig. 8, the hanging hardware 71 is an overall rectangular box-like structure with a square cross section, and is made up of four side walls, an upper wall 71a, and a lower wall 71b. The hanging hardware 71 further includes a lower plate 71c that is fixed to the underside of the lower wall 71b by welding or the like. A temporary fixing through-hole 711 that penetrates the lower wall 71b and the lower plate 71c of the hanging hardware 71 is formed in the lower wall 71b and the lower plate 71c. A connecting bolt 57 that connects the hanging hardware 71 to the U-shaped wall body 50 is passed through this temporary fixing through-hole 711. A nut 711a that screws onto the connecting bolt 57 is fixed by welding or the like to the interior of the hanging hardware 71 (on the upper surface of the lower wall 71b) at a position corresponding to the temporary fixing through-hole 711.

[0051] 9, connecting bolt 57 is inserted through the opening of upper connecting hardware 522 (the opening not blocked by insulating material 55), through through-hole 10c provided in connecting hardware 522 and through temporary fixing through-hole 711 provided in hanging hardware 71, and then screwed into nut 711a arranged inside hanging hardware 71. This fixes hanging hardware 71 to pillar 52 of U-shaped wall body 50. Furthermore, in this embodiment, the hanging hardware 71 is fixed to the upper connecting hardware 522 by a connecting bolt 57, and the lower plate portion 71c is fixed to the second horizontal wall portion 10b of the upper connecting hardware 522 by welding or the like.

[0052] As shown in Fig. 9(b), when viewed from the short side of the residential unit 1, the width of the hanging hardware 71 is approximately equal to the width of the pillar 52. On the other hand, as shown in Fig. 9(a), when viewed from the long side of the residential unit 1, the width of the hanging hardware 71 is longer than the width of the pillar 52. In other words, the hanging hardware 71 is arranged so that the long side direction of the hanging hardware 71 and the long side direction (left-right direction) of the unit main body 3 are aligned. As shown in Figure 8(e), the dimension of the hanging hardware 71 in the long side direction is longer than the thickness dimension of the wall-mounted wood panel 51, and the dimension of the hanging hardware 71 in the short side direction (the dimension in the short side direction when viewed in a plane) is set to be approximately equal to the thickness dimension of the wall-mounted wood panel 51.

[0053] 9(a), one end face in the long side direction of the hanging hardware 71 fixed to the pillar 52 arranged at the corner of the U-shaped wall 50 and the side face of the pillar 52 (the side face in contact with the sleeve wall wooden piece 53) are positioned on the same vertical plane. Therefore, the other end face in the long side direction of the hanging hardware 71 protrudes beyond the pillar 52 to which the hanging hardware 71 is fixed toward the wall wood panel 51 adjacent to the pillar 52 (long side wall wood panel 51D). Similarly, one end face in the long side direction of the hanging hardware 71 fixed to the pillar 52 located at the open end of the U-shaped wall 50 and the side face of the pillar 52 (the side face in contact with the support member 54) are positioned on the same vertical plane. Therefore, the other end face in the long side direction of the hanging hardware 71 protrudes further toward the wall wood panel 51 adjacent to the pillar 52 (long side wall wood panel 51C) than the pillar 52 to which the hanging hardware 71 is fixed. That is, the hanging hardware 71 fixed to the pillar 52 arranged in the corner portion protrudes further than the pillar 52 toward the pillar 52 (pillar 52 arranged at the open end) that faces the pillar 52 in the left-right direction. Also, the hanging hardware 71 fixed to the pillar 52 arranged at the open end protrudes further than the pillar 52 toward the pillar 52 (pillar 52 arranged in the corner portion) that faces the pillar 52 in the left-right direction.

[0054] The hoisting tool 150 that can be attached to the hoisting hardware 71 is a metal fitting for fastening a hoisting wire. The hoisting wire that hoists the residential unit 1 includes, for example, one main wire and multiple (e.g., three or more) sub-wires that branch off from the tip of the main wire. The main wire is fastened to a crane or the like, and the sub-wires are fastened to the hoisting tool 150. The sling 150 is removably fixed to the sling hardware 71, and is designed to be removed from the sling hardware 71, for example, when the sling 150 is not in use (for example, when the hoisting work is completed).

[0055] 8, a hanging through-hole 712 that penetrates the upper wall 71a of the hanging hardware 71 is formed, and the hanging tool 150 is passed through this hanging through-hole 712. Furthermore, inside the hanging hardware 71 (on the underside of the upper wall 71a), a nut 712a onto which the hanging tool 150 is threaded is fixed by welding or the like at a position corresponding to the hanging through-hole 712. 10, the sling 150 is inserted from above the hanging hardware 71 into the hanging through-hole 712 provided in the hanging hardware 71, and is screwed into the nut 712a arranged inside the hanging hardware 71. In this way, the sling 150 is attached to the residential unit 1. In this embodiment, an eyebolt with a circular head and a threaded shaft is used as the suspender 150, but this is not limited to this and other metal fittings may also be used.

[0056] 8, an upper wall 71a of the hanging hardware 71 has a vertical joint through-hole 713 formed therein that penetrates the upper wall 71a, and a nut 713a onto which a connecting bolt 26 (described later) is threaded is fixed by welding or the like inside the hanging hardware 71 (on the underside of the upper wall 71a) at a position corresponding to the vertical joint through-hole 713. The vertical joint through-hole 713 and nut 713a are used when connecting multiple residential units 1 in the vertical direction to form a multi-story structure (see modified example). Of the through holes formed in the upper wall portion 71a of the hanging hardware 71, the upper / lower joining through hole 713 is provided directly above the temporary fixing through hole 711. In other words, of the through holes formed in the upper wall portion 71a of the hanging hardware 71, the upper / lower joining through hole 713 is provided above the pillar 52 to which the hanging hardware 71 is fixed. On the other hand, of the through holes formed in the upper wall portion 71a of the hanging hardware 71, the hanging through hole 712 is provided in a position away from above the pillar 52 to which the hanging hardware 71 is fixed, that is, above the long side wall wood panels 51C, 51D adjacent to the pillar 52 to which the hanging hardware 71 is fixed.

[0057] As shown in FIG. 6, parapet wall lumber 72, 73 is hung between the hanging metal fittings 71 that face each other in the long side direction of the unit body 3. The parapet wall timbers 72, 73 include a first parapet wall timber 72 and a second parapet wall timber 73 that is longer than the first parapet wall timber 72. The first parapet wall timber 72 is fixed by bridging between a hanger 71 fixed to a column 52 located at a corner of the U-shaped wall body 50 and a hanger 71 fixed to a column 52 located at the open end of the U-shaped wall body 50. The second parapet wall timber 73 is fixed by bridging between a hanger 71 fixed to a column 52 located at the open end of one U-shaped wall body 50 and a hanger 71 fixed to a column 52 located at the open end of the other U-shaped wall body 50.

[0058] That is, the unit body 3 is provided with a long parapet 7 along the long side of the unit body 3 at each end of the short side of the unit body 3. The parapet 7 is configured to include at least a hanging metal fitting 71, parapet wall timbers 72, 73, and a coping 74 (described later), and protrudes above the roof of the unit body 3. In this way, the hanging hardware 71 is used not only for lifting the residential unit 1 but also as part of the parapet 7. In other words, the hanging hardware 71 is a hardware for fixing the parapet wall timbers 72, 73 to the U-shaped wall body 50, which has been processed to allow the hanging tool 150 to be detachably fixed.

[0059] The sleeve wall lumber 53 attached to the corner portion of the U-shaped wall body 50, together with end grain covers 530 (described later) that cover the sleeve wall lumber 53, constitutes the sleeve wall 8 of the unit body 3. As shown in Figure 6, the sleeve wall lumber 53 is located outside the base frame 2, and its lower end surface is approximately flush with the lower end surface of the half base 42 of the floor section 4, while its upper end surface is approximately flush with the upper surface of the hanging hardware 71. In other words, the sleeve walls 8 are integrally provided at both ends of the parapet 7, and each sleeve wall 8 is composed of at least the sleeve wall body (sleeve wall lumber 53) and end grain covers 530. The support member 54 attached to the open end of the U-shaped wall body 50 is a member for supporting a cross member 58 that connects one U-shaped wall body 50 to the other U-shaped wall body 50. The lower end surface of the support member 54 is substantially flush with the lower end surface of the column 52 (the second horizontal wall portion 10b of the lower connecting hardware 522), whereas the upper end surface of the support member 54 is located below the upper end surface of the column 52 (the second horizontal wall portion 10b of the upper connecting hardware 522), and the upper end surface of the cross member 58 placed on the upper end surface of the support member 54 is substantially flush with the upper end surface of the column 52. 6, the cross member 58 is a thick wooden beam (or a wooden girder) that is spanned between a pair of U-shaped wall bodies 50. Specifically, the cross member 58 is placed on a support member 54 attached to one of the U-shaped wall bodies 50 and a support member 54 attached to the other U-shaped wall body 50, and is fastened with screws or bolts to the support members 54 and columns 52 (columns 52 arranged at the open end), thereby bridging and fixing the cross member 58 between the pair of U-shaped wall bodies 50.

[0060] 5 and 6, the wall 5 of the unit body 3 has a pair of openings 5a between one U-shaped wall body 50 and the other U-shaped wall body 50. That is, the wall 5 has two openings 5a surrounded by a cross member 58, a pair of support members 54 that support the cross member 58, and an end of the floor 4 that faces the cross member 58. An opening wall wood panel 51E is disposed over the entire pair of openings 5a opposite the opening 5a connected by the connecting means 30. That is, the wall wood panel 51 in this embodiment includes short-side wall wood panels 51A and 51B, long-side wall wood panels 51C and 51D, and the opening wall wood panel 51E. The height of the opening wall wood panel 51E is set shorter than the heights of the short-side wall wood panels 51A and 51B and the long-side wall wood panels 51C and 51D by the length of the cross member 58. That is, the opening wall wood panel 51E has a shorter vertical frame member A than the short-side wall wood panels 51A and 51B and the long-side wall wood panels 51C and 51D. Furthermore, the short side wall wood panels 51A, 51B and the long side wall wood panels 51C, 51D are load-bearing wall panels, but the opening wall wood panel 51E may be either a load-bearing wall panel or a partition wall panel.

[0061] The wall wood panels 51E for openings include those with openings such as a door Dr and a window W. When an opening such as a door Dr or a window W is formed in the wall wood panels 51E for openings, the way in which the frame materials A, B and the auxiliary crosspiece material C are assembled (the opening frame) is appropriately changed to form the opening, and a sash for the door Dr or a sash for the window W is assembled in the opening. Furthermore, when the residential unit 1 is used in a cold or polar region, all of these sashes are designed to be suitable for cold or polar regions. Fig. 11 shows an example of a state in which a wall wood panel 51E for an opening is placed in the opening 5a. In the example shown in Fig. 11, from the left, a wall wood panel 51E with an opening for a window W, a wall wood panel 51E with an opening for a door Dr, and a wall wood panel 51E without openings such as a door Dr or window W are placed.

[0062] On the other hand, of the pair of openings 5a, an opening wall wood panel 51E may or may not be placed in the opening 5a on the side that is connected by the connecting means 30 (hereinafter referred to as the connecting side opening 5a). If an opening wall wood panel 51E is not placed in the connecting side opening 5a, the entire connecting side opening 5a becomes a space for moving between the two residential units 1A, 1B. If an opening wall wood panel 51E is placed in a portion of the connecting side opening 5a, the rest of the connecting side opening 5a (the portion where the opening wall wood panel 51E is not placed) becomes a space for moving between the two residential units 1A, 1B. It is also possible to place an opening wall wood panel 51E over the entire opening 5a on the connecting side, in which case at least one of the multiple opening wall wood panels 51E placed in the opening 5a on the connecting side should have an opening such as a door Dr or window W, and people can move between the two residential units 1A and 1B through that opening.

[0063] In the example shown in FIG. 6, a wall wood panel 51E without an opening such as a door Dr or window W is arranged as an opening wall wood panel 51E in a part of the opening 5a on the connecting side. It is also possible to directly assemble a sash for a door Dr or a sash for a window W into the opening 5a. The opening 5a into which the sash is directly assembled may be the opening 5a on the opposite side to the side connected by the connecting means 30, or it may be the opening 5a on the connecting side as shown in Figure 29 described later. In this embodiment, openings (openings connecting the living space S with the outdoors and openings for moving between the two living units 1A and 1B) are provided only on the long side walls of the living unit 1, and no openings are provided on the short side walls of the living unit 1, but this is not limited to this. For example, it is also possible to use wall wood panels with openings such as doors Dr and windows W as the short side wall wood panels 51A.

[0064] (wooden roof panels) Fig. 12 is a diagram illustrating the outer structure of the residential unit 1. For convenience, illustration of the wall wood panels 51 and the sleeve wall lumber 53 is omitted in Fig. 12. Fig. 13 is a diagram illustrating the structure of the roof portion 6, where (a) is a side view and (b) is a plan view. As shown in Fig. 13, the roof section 6 of the unit body 3 comprises a roof wooden panel 61 and a panel support section 62. The dimensions of the long side and short side of the roof section 6 are set so that the four corners of the roof section 6 fit into the corners of a pair of U-shaped walls 50. As shown in Fig. 12, the roof section 6 is fastened with screws or bolts to the inner surface of the wall section 5 (the surface facing the living space S).

[0065] The roof wood panel 61 in this embodiment comprises at least vertical and horizontal frame materials A and B, an exterior surface material E, and a heat insulating material F. The exterior surface material E is provided on the upper side. In addition, on the upper surface of the exterior surface material E, a waste plywood 6c (see Figure 14, etc.) that is the same thickness as the exterior surface material E or thicker than the exterior surface material E is provided. The roof wood panel 61 in this embodiment includes a first roof wood panel 61A and a second roof wood panel 61B that is narrower than the first roof wood panel 61A. The wider roof wood panel 61 (61A) has longer cross bars B and more auxiliary cross bars C than the narrower roof wood panel 61 (61B).

[0066] As shown in Figure 13(b), the first roof wood panel 61A is arranged so that the long side direction of the first roof wood panel 61A is aligned with the short side direction of the base frame 2, and a total of six first roof wood panels 61A are lined up in the long side direction (left and right direction) of the base frame 2. The second roof wood panels 61B are arranged so that the long side direction of the second roof wood panels 61B is aligned with the short side direction of the base frame 2, and one second roof wood panel 61B is arranged adjacent to the first roof wood panel 61A that is at the left end of the six first roof wood panels 61A, and another second roof wood panel 61B is arranged adjacent to the first roof wood panel 61A that is at the right end of the six first roof wood panels 61A.

[0067] Adjacent roof wood panels 61 are in contact with each other at the vertical frame members A, so by fastening these vertical frame members A together with screws or bolts, all of the roof wood panels 61 (61A, 61B) are joined together. As shown in Figure 12, the short side end (horizontal frame member B) of each roof wood panel 61 is fastened with screws or bolts to the panel support member 62, with the panel support member 62 resting on the panel support member 62. The panel support member 62 is fastened with screws or bolts to the inner surface of the wall member 5 (the surface facing the living space S).

[0068] The roof portion 6 of the unit body 3 is a gable roof, and as shown in FIG. 13(a), has roof surfaces that flow in both directions from a ridge perpendicular to the left-right direction (the long side direction of the unit body 3). The unit body 3 is provided with a parapet 7 at each end of the short side of the unit body 3. Therefore, rain that falls on the roof is drained from both ends of the long side (left and right) of the unit body 3. Therefore, by making the roof portion 6 a gable roof with a roof surface that flows in both left and right directions, rain that falls on the roof can be forced to flow to both ends of the long side of the unit body 3, allowing for smooth drainage. The roof portion 6 is not limited to a gable roof having roof surfaces flowing in both left and right directions, but may be any other sloped roof or a flat roof.

[0069] [Interior and exterior] Figures 14 to 18 are diagrams illustrating the interior and exterior configurations. Specifically, Figure 14 is a vertical cross-sectional view of the vicinity of short-side sidewall wood panel 51A, Figure 15 is a vertical cross-sectional view of the vicinity of pillar 52 located in the corner, and Figure 16 is a vertical cross-sectional view of the vicinity of pillar 52 located at the open end. Figure 17 is a vertical cross-sectional view of the vicinity of long-side sidewall wood panel 51C, and Figure 18 is a vertical cross-sectional view of the vicinity of opening 5a. For convenience, in Figures 15 and 16, the coping 74 is indicated by a two-dot chain line. A floor surface material 4a, which is an interior finishing material, is provided on the inner surface (surface facing the living space S) of the floor portion 4 of the unit body 3. Note that a heat insulating material or the like may be provided between the floor portion 4 (floor wood panels 41, half base 42) and the floor surface material 4a.

[0070] An interior wall material 5b, which is an interior finishing material, is provided on the inner surface (surface facing the living space S) of the wall portion 5 of the unit body 3. The interior wall material 5b may be made of gypsum board, and wall cloth may be attached to the surface of this gypsum board facing the living space S. Furthermore, a heat insulating material or the like may be provided between the wall portion 5 (U-shaped wall body 50, wall wood panel 51E for opening, cross member 58) and the interior wall material 5b. A part of the outer surface of the wall 5 (side wall lumber 53) is covered with end grain cover 530, which is an exterior finishing material, and the part of the outer surface of the wall 5 that is not covered with end grain cover 530 is covered with exterior wall material 5c, which is an exterior finishing material. A waterproof sheet or the like may be provided between the wall 5 and the exterior finishing material (end grain cover 530, exterior wall material 5c). Additionally, arabesque patterns 63 and eaves edge water trim 64 are provided at the upper ends of the short-side wall wood panels 51A, 51B in the U-shaped wall 50. The exterior wall material 5c covering the short-side wall wood panels 51A, 51B is positioned below the arabesque patterns 63, and the upper end of the exterior wall material 5c is inserted between the eaves edge water trim 64 and the short-side wall wood panels 51A, 51B. In addition, a wall stopper 65 (see FIG. 19 and the like) is provided on the roof surface of the unit body 3 to prevent rain that has fallen on the roof from flowing into the end wood cover 530.

[0071] A ceiling material 6a, which is an interior finishing material, is provided on the inner surface (the surface facing the living space S) of the roof portion 6 of the unit body 3. The ceiling material 6a may be made of gypsum board, and ceiling cloth may be attached to the surface of this gypsum board facing the living space S. Furthermore, a heat insulating material 6b, etc. is provided between the roof portion 6 (roof wooden panels 61, panel support portions 62) and the ceiling material 6a. The outer surface (waste plywood 6c) of the roof portion 6 is covered with a roof surface material (not shown) which is an exterior finishing material. In addition, a waterproof sheet 6d such as a PVC sheet is provided between the roof surface material and the waste plywood 6c. The upper end of the parapet body (hanging hardware 71, parapet wall timbers 72, 73) of the unit body 3 is covered with a coping 74, which is an exterior finishing material.

[0072] Fig. 19(a) is a side view illustrating the configuration of the exterior near the parapet 7 and sleeve wall 8, Fig. 19(b) is a diagram illustrating the configuration of the eaves edge drip edge 64, and Fig. 19(c) is a diagram illustrating the configuration of the wall stopper 65. In Fig. 19(a), for convenience, the coping 74 is shown by a two-dot chain line. Figure 20 is a diagram illustrating the configuration of the exterior near the sleeve wall 8, with (a) being a plan view and (b) being a cross-sectional view. For convenience, illustration of the coping 74 and the like is omitted in Figure 20(a). The dashed dotted line in Figure 20(b) is the eaves edge water drain line. Figure 21 illustrates the configuration of the end cover 530, with (a) being a layout diagram and (b) being a plan view. For convenience, the wall wood panel 51 and other components are omitted from Figure 21(a). Also, for convenience, the end cover 530 is indicated by a two-dot chain line in Figure 21(a). Figure 22(a) is a vertical cross-sectional view explaining the exterior configuration of the upper end (near parapet 7) of residential unit 1, Figure 22(b) is a vertical cross-sectional view explaining the exterior configuration of the lower end of residential unit 1, and Figure 22(c) is a side view explaining the exterior configuration of the lower end of residential unit 1.

[0073] As shown in FIG. 19(a), a base material 66 is laid on the upper end surfaces of the short-side side wall wood panels 51A and 51B. The arabesque 63 is a long, approximately rectangular parallelepiped member that extends along the short side of the unit main body 3, and is positioned so that the top surface of the arabesque 63 is approximately flush with the top surface of the base material 66, and is fastened with screws or bolts to the upper ends of the short side wall wood panels 51A, 51B. 19(a) and 19(b), eaves edge flashing 64 is an L-shaped cross-section member that includes covering portion 64a that covers arabesque pattern 63 and base material 66 from above, and hanging portion 64b that extends downward from one end of covering portion 64a. The tip of hanging portion 64b is bent inward (toward short-side side wall wood panels 51A, 51B). Eaves edge flashing 64 is positioned so that hanging portion 64b abuts against the side of arabesque pattern 63 (the side opposite to the side that abuts short-side side wall wood panels 51A, 51B), and covering portion 64a is fastened to base material 66 (and short-side side wall wood panels 51A, 51B) with screws or bolts.

[0074] As shown in Figures 19(a) and (c), the wall stopper 65 is composed of a rectangular plate-shaped bottom portion 65a, a first side portion 65b protruding upward from one of the four ends of the bottom portion 65a, and a second side portion 65c protruding upward from the end of the four ends of the bottom portion 65a that is perpendicular to the one end, and is placed and fixed on the upper surface of the covering portion 64a of the eaves gutters 64. As shown in Figures 19(a) and 20(a), the wall stopper 65 is positioned so that the first side portion 65b abuts against the sleeve wall 8 (sleeve wall timber 53) and the second side portion 65c is approximately flush with the hanging portion 64b of the eaves edge gutters 64, and the bottom portion 65a is fastened to the eaves edge gutters 64 (and arabesque 63) and the first side portion 65b is fastened to the sleeve wall timber 53 with screws or bolts.

[0075] The roof surface of the unit body 3 is formed by the upper surface (waste plywood 6c) of the roof wood panel 61 and the upper surface (covering portion 64a) of the eaves edge flashing 64. Wall stoppers 65 are provided at the four corners of this roof surface. In other words, one unit body 3 is provided with four wall stoppers 65. This makes it possible to prevent rain that falls on the roof from flowing into the end wood cover 530 through the gap between the end wood cover 530 (specifically, the fixing plate portion 532b described below) and the sleeve wall lumber 53. The dimensions of the wall stopper 65 are set so that it protrudes inward (toward the short-side wall wooden panels 51A, 51B) from the arabesque pattern 63. This allows the wall stopper 65 to be supported not only by the arabesque pattern 63 but also by the short-side wall wooden panels 51A, 51B, thereby reducing the burden on the arabesque pattern 63.

[0076] As shown in Figure 20, the sleeve wall wood 53 has a first furring strip 53a attached to the side opposite the side that contacts the pillar 52 (and hanging hardware 71), a second furring strip 53b attached to the side that contacts the exterior wall material 5c on the short side of the unit main body 3, and a third furring strip 53c attached to the side opposite the side that contacts the exterior wall material 5c. The end grain cover 530 is a sheet metal member made of, for example, PVC steel plate, and as shown in Fig. 21(a), is formed long along the height direction of the sleeve wall wooden piece 53. As shown in Figs. 20 and 21(b), the end grain cover 530 is configured to include a first plate portion 531, a second plate portion 532 extending from one end of the first plate portion 531 in a direction perpendicular to the first plate portion 531, and a third plate portion 533 extending from the other end of the first plate portion 531 in the same direction as the second plate portion 532. The first plate portion 531 is disposed so as to contact the first furring strip 53a. That is, the first furring strip 53a maintains the distance between the tip end surface of the sleeve wall wooden piece 53 in the protruding direction and the butt end cover 530, thereby preventing the butt end cover 530 from shifting in position (in the long side direction of the unit body 3).

[0077] The second plate portion 532 faces the second furring strip 53b at a predetermined distance. The second plate portion 532 has, at its tip, a protruding plate portion 532a that protrudes toward the second furring strip 53b and a fixing plate portion 532b that protrudes outward from the tip of the protruding plate portion 532a in the protruding direction, and the fixing plate portion 532b is fastened to the second furring strip 53b with screws. In addition, a plurality of hat-shaped accessories 53d (five in this embodiment (see Figure 21(a))) are arranged between the second furring strip 53b and the second plate portion 532 to maintain the distance between the second furring strip 53b and the second plate portion 532, i.e., to prevent the end grain cover 530 from shifting in position (shifting in the short side direction of the unit main body 3).

[0078] The hat-shaped accessory 53d is screwed to the second furring strip 53b, and as shown in FIG. 20 , the end grain cover 530 is bolted to the hat-shaped accessory 53d. Specifically, a bolt hole for a connecting bolt 534 is formed in the second plate portion 532 of the end grain cover 530. A bolt hole for the connecting bolt 534 is also formed in the hat-shaped accessory 53d, and a nut 535 onto which the connecting bolt 534 threads is fixed by welding or the like at a position inside the hat-shaped accessory 53d corresponding to the bolt hole. The connecting bolt 534 is inserted through a bolt hole formed in the second plate portion 532, passes through a bolt hole formed in the hat-shaped accessory 53d, and is screwed into the nut 535. In other words, the end grain cover 530 is connected to the sleeve wall lumber 53 by the connecting bolt 534 (specifically, the connecting bolt 534, the hat-shaped accessory 53d, and the second furring strip 53b). In addition, a sealing material 53e is filled in the gap between the part of the second plate portion 532 that is parallel to the exterior wall material 5c on the short side of the unit body 3 (protruding plate portion 532a) and the exterior material on the short side of the unit body 3 (exterior wall material 5c and eaves gutter 64) and wall stopper 65, in order to improve waterproofing in the gap.

[0079] The third plate portion 533 faces the third furring strip 53c at a predetermined distance. The third plate portion 533 has, at the tip of the third plate portion 533, a protruding plate portion 533a that protrudes toward the third furring strip 53c, and a fixing plate portion 533b that protrudes outward from the tip of the protruding plate portion 533a in the protruding direction, and the fixing plate portion 533b is fastened to the third furring strip 53c with a screw. The gap between the part of the third plate portion 533 (protruding plate portion 533a) that is perpendicular to the exterior wall material 5c on the long side of the unit body 3 and the exterior wall material 5c on the long side of the unit body 3 is filled with sealing material 53f to improve waterproofing in the gap.

[0080] 19(a) and 21(a), the upper end of the end wood cover 530 is located on the same horizontal plane as the upper end surface of the sleeve wall lumber 53, and the lower end of the end wood cover 530 is located below the lower end surface of the sleeve wall lumber 53. In other words, the end wood cover 530 covers the entire sleeve wall lumber 53. 19(a), the upper end surface of the sleeve wall timber 53 is substantially flush with the upper surface of the hanging hardware 71. Furthermore, the upper end of the wall stopper 65 is located below the upper end surface of the sleeve wall timber 53, but the upper end of the wall stopper 65 is covered by the coping 74. Therefore, by filling the gap between the second plate 532 (protruding plate 532a) of the end wood cover 530 and the exterior material (exterior wall material 5c and eaves edge flashing 64) on the short side of the unit body 3 and the wall stopper 65 with sealant 53e, the sealant 53e can be provided not only in the portion of the end wood cover 530 that is not covered by the coping 74, but also in the portion that is covered by the coping 74.

[0081] 22(a), the upper end of the exterior wall material 5c on the long side of the unit body 3 is covered by a coping board 74. That is, the exterior wall material 5c on the long side of the unit body 3 covers not only the wall wood panels 51 and the cross members 58, but also the parapet body (hanging hardware 71, parapet wall lumber 72, 73). Therefore, by filling a sealant 53f between the third plate portion 533 (protruding plate portion 533a) of the end wood cover 530 and the exterior wall material 5c on the long side of the unit body 3, the sealant 53f can be provided not only in the portion of the end wood cover 530 that is not covered by the coping board 74, but also in the portion that is covered by the coping board 74.

[0082] As shown in Figures 22(b) and (c), the lower end of the exterior wall material 5c is located above the lower end surface of the half base 42, to which the foundation flashing 43 is attached. The lower end surface of the sleeve wall lumber 53 is substantially flush with the lower end surface of the half base 42, and the lower end of the end wood cover 530 is located below the lower end surface of the sleeve wall lumber 53. The sealants 53e and 53f are filled not only in the gap between the exterior wall material 5c and the end wood cover 530, but also in the gap between the foundation flashing 43 attached to the half base 42 and the end wood cover 530. In other words, the sealants 53e and 53f are provided not only in the portion covered by the exterior wall material 5c but also in the portion below it (the portion not covered by the exterior wall material 5c but covered by the foundation flashing 43; i.e., the lower end of the half base 42 and the upper end of the base frame 2). 19(a) and 22(a), the parapet body (hanging hardware 71, parapet wall timbers 72, 73) is covered with a coping board 74. The coping board 74 is fixed to the parapet body via a coping board receiving bracket 75.

[0083] FIG. 23 is a diagram illustrating the configuration of the coping support bracket 75, where (a) is a layout diagram and (b) is a side view. FIG. 24 is a diagram for explaining the configuration of the coping 74, where (a) is a layout diagram and (b) is a side view. The capping support bracket 75 is a member made of, for example, stainless steel plate, and as shown in Fig. 23(a), is formed long along the long side direction (left-right direction) of the unit body 3. In this embodiment, the capping support bracket 75 includes a first capping support bracket 75A and second capping support brackets 75B arranged on the left and right sides of the first capping support bracket 75A. The second coping support bracket 75B is installed so that one longitudinal end of the second coping support bracket 75B is positioned on the same vertical plane as the outer surface of the first plate portion 531 of the end grain cover 530 that covers the sleeve wall lumber 53. The length dimensions of the first coping support bracket 75A and the second coping support bracket 75B are set so that the ends of the first coping support bracket 75A and the second coping support bracket 75B abut against each other (do not overlap).

[0084] As shown in Figure 23(b), the cap support bracket 75 is a U-shaped accessory comprising a horizontal plate portion 751, a first vertical plate portion 752 extending downward from one end of the horizontal plate portion 751, and a second vertical plate portion 753 extending downward from the other end of the horizontal plate portion 751. The horizontal plate portion 751 has screw holes for screws 77 for fixing the coping support bracket 75 to the parapet body, and a plurality of alignment jigs 754 are fixed by welding or the like to the underside of the horizontal plate portion 751. The second vertical plate portion 753 has bolt holes for connecting bolts 78, and nuts 755 onto which the connecting bolts 78 thread are fixed by welding or the like to the inner surface of the second vertical plate portion 753 (the surface facing the parapet body) at positions corresponding to the bolt holes. As shown in Figure 22(a), the capping support bracket 75 is fixed to the parapet body (parapet wall timbers 72, 73) with screws 77, with the underside of the horizontal plate portion 751 abutting against the upper surface of the parapet body (waterproof sheet 6d covering the upper surface of the parapet body) and the alignment jig 754 abutting against the rising surface of the parapet body (waterproof sheet 6d covering the rising surface of the parapet body).

[0085] The capping board 74 is a sheet metal member made of, for example, PVC steel plate, and as shown in Fig. 24(a), is formed long along the long side direction (left-right direction) of the unit body 3. The capping board 74 in this embodiment includes a first capping board 74A and second capping boards 74B arranged on the left and right sides of the first capping board 74A. The second coping board 74B is installed so that one longitudinal end of the second coping board 74B extends outward beyond the first plate portion 531 of the buttock cover 530 that covers the sleeve wall lumber 53. The lengths of the first coping board 74A and the second coping board 74B are set so that the ends of the first coping board 74A and the second coping board 74B overlap. An end cap is attached to one longitudinal end of the second coping board 74B (the end that does not overlap with the first coping board 74A) to close off the end.

[0086] As shown in Figures 22(a) and 24(b), the top board 74 is configured to include an inclined plate portion 741 that slopes downward toward the inside of the short side of the unit main body 3, an engaging plate portion 742 that extends downward from one end of the inclined plate portion 741, and a fixed plate portion 743 that extends downward from the other end of the inclined plate portion 741. The tip of the engaging plate portion 742 is folded inward, and this folded portion can engage with the tip of the first vertical plate portion 752 of the cap board receiving bracket 75. In addition, a bolt hole for the connecting bolt 78 is formed in the fixing plate portion 743. The coping board 74 is fixed to the coping board support bracket 75 by a connecting bolt 78, with the lower surface of the inclined plate portion 741 abutting against the upper surface of the insulation material 76 installed on the horizontal plate portion 751 of the coping board support bracket 75 and the tip portion (folded portion) of the engagement plate portion 742 engaging with the tip portion of the first vertical plate portion 752 of the coping board support bracket 75. Specifically, the connecting bolt 78 is inserted through a bolt hole provided in the fixing plate portion 743 of the coping board 74, passes through a bolt hole provided in the second vertical plate portion 753 of the coping board support bracket 75, and is screwed into a nut 755 fixed to the inner surface of the second vertical plate portion 753. In other words, the coping board 74 is connected to the parapet body by the connecting bolt 78 (specifically, the connecting bolt 78 and the coping board support bracket 75).

[0087] The heat insulating material 76 is a hard heat insulating material such as Styrofoam (registered trademark), and has an inclined upper surface as shown in Fig. 22(a). That is, the heat insulating material 76 is disposed between the horizontal plate portion 751 of the capping support bracket 75 and the inclined plate portion 741 of the capping 74, and the heat insulating material 76 supports the capping 74, so that the inclined plate portion 741 of the capping 74 can maintain a predetermined inclination angle.

[0088] [About connection means] The two residential units 1A, 1B are connected by the connecting means 30 after these units are arranged in a state where misalignment is minimized (within a tolerance). The connecting means 30 includes a wall connecting member 31 that connects the sleeve walls 8 of the two residential units 1A, 1B, a roof connecting member 32 that connects the parapets 7 of the two residential units 1A, 1B, a ceiling connecting member 33 that connects the cross members 58 of the two residential units 1A, 1B, a connecting floor panel 34 that connects the floor sections 4 of the two residential units 1A, 1B, and a connecting wall panel 35 that connects the support members 54 of the two residential units 1A, 1B.

[0089] (Connection means on the exterior wall side) 25 and 26 are diagrams illustrating the configuration of the wall connecting member 31, with Fig. 25 being a layout diagram, Fig. 26(a) being a cross-sectional view showing the state in which the sleeve walls 8 are connected to each other, and Fig. 26(b) being a plan view. In Fig. 25, for convenience, the end grain cover 530 and the wall connecting member 31 are shown with a two-dot chain line. Also, in Fig. 25, for convenience, the end grain cover 530 and the like of the sleeve walls 8 connected by the wall connecting member 31 are not shown. The wall connecting member 31 is a joint member that joins the sleeve walls 8 on the connecting sides (sides connected by the connecting means 30) of the two residential units 1A, 1B, and is formed long along the height direction (vertical direction) of the residential unit 1. As shown in Fig. 25, the length dimension (vertical dimension) of the wall connecting member 31 is set to be approximately equal to the length dimension of the end grain cover 530.

[0090] 26, the wall connecting member 31 is a member made of, for example, PVC steel plate, and is configured to include a first panel portion 311 and a pair of second panel portions 312 extending from both ends of the first panel portion 311 in a direction perpendicular to the first panel portion 311. Similar to the second panel portion 532 of the end grain cover 530, the second panel portion 312 is formed with bolt holes for connecting bolts 534, and the wall connecting member 31 is fixed to the sleeve wall 8 using the connecting bolts 534 that are attached to the sleeve wall 8 in advance.

[0091] Specifically, when attaching the wall connecting member 31, the connecting bolt 534 is removed from the sleeve wall 8 of one of the residential units 1A, and the connecting bolt 534 is inserted through a bolt hole provided in one of the pair of second face plates 312 of the wall connecting member 31, passed through a bolt hole provided in the second face plate 532 of the end cover 530 and a bolt hole provided in the hat-shaped accessory 53d, and screwed into a nut 535 provided in the hat-shaped accessory 53d. Similarly, the connecting bolt 534 is removed from the sleeve wall 8 of the other residential unit 1B, and inserted through a bolt hole provided in the other of the pair of second face plates 312 of the wall connecting member 31, passed through a bolt hole provided in the second face plate 532 of the end cover 530 and a bolt hole provided in the hat-shaped accessory 53d, and screwed into a nut 535 provided in the hat-shaped accessory 53d. As a result, the wall connecting members 31 connect the sleeve walls 8 of the residential units 1A and 1B to each other.

[0092] 27 and 28 are diagrams explaining the configuration of the roof connecting member 32, with Fig. 27 being a layout diagram, Fig. 28(a) being a longitudinal cross-sectional view showing the state in which the parapets 7 are connected to each other, and Fig. 28(b) being a side view. For convenience, Fig. 27 omits illustration of the coping 74 and other components of the parapets 7 connected by the roof connecting member 32. The roof connecting member 32 is a joint member that joins the parapets 7 on the connecting sides (sides connected by the connecting means 30) of the two residential units 1A, 1B, and is formed long along the long side direction (left-right direction) of the residential unit 1, as shown in Figure 27. The roof connecting member 32 in this embodiment includes a first roof connecting member 32A and second roof connecting members 32B that are arranged on the left and right sides of the first roof connecting member 32A.

[0093] The second roof connecting member 32B is installed so that one longitudinal end of the second roof connecting member 32B extends beyond the end cap of the coping 74. The length dimensions (left-right dimensions) of the first roof connecting member 32A and the second roof connecting member 32B are set so that the ends of the first roof connecting member 32A and the second roof connecting member 32B overlap. An end cap is attached to one longitudinal end of the second roof connecting member 32B (the end that does not overlap with the first roof connecting member 32A) to close that end. Furthermore, the roof connecting member 32 is sized so that one longitudinal end of the second roof connecting member 32B extends beyond the wall connecting member 31 attached to the residential units 1A, 1B. In other words, the roof connecting member 32 is attached to the residential units 1A, 1B after the wall connecting member 31 is attached.

[0094] The roof connecting member 32 is made of, for example, a PVC steel plate, and as shown in Figure 28, is configured to include an inclined panel portion 321 with two inclined surfaces, a pair of fixed panel portions 322 extending downward from both ends of the inclined panel portion 321, and a plywood 323 attached to the underside of the inclined panel portion 321. Of the two inclined surfaces of the inclined panel portion 321, one is parallel to the inclined panel portion 741 of the coping board 74 in one residential unit 1A, and the other is parallel to the inclined panel portion 741 of the coping board 74 in the other residential unit 1B. In addition, the fixed panel portion 322, like the fixed panel portion 743 of the coping board 74, has bolt holes for connecting bolts 78 formed therein, so that the roof connecting member 32 can be fixed to the parapet 7 using the connecting bolts 78 that are previously attached to the parapet 7.

[0095] Specifically, when attaching the roof connecting member 32, the connecting bolt 78 is removed from the parapet 7 of one of the residential units 1A, and the connecting bolt 78 is inserted through a bolt hole provided in one of the pair of fixed face plate portions 322 of the roof connecting member 32, passed through a bolt hole provided in the fixed plate portion 743 of the coping 74 and a bolt hole provided in the second vertical plate portion 753 of the coping support bracket 75, and screwed into a nut 755 provided in the second vertical plate portion 753. Similarly, the connecting bolt 78 is removed from the parapet 7 of the other residential unit 1B, and inserted through a bolt hole provided in the other of the pair of fixed face plate portions 322 of the roof connecting member 32, passed through a bolt hole provided in the fixed plate portion 743 of the coping 74 and a bolt hole provided in the second vertical plate portion 753 of the coping support bracket 75, and screwed into a nut 755 provided in the second vertical plate portion 753. As a result, the parapets 7 of the residential units 1A and 1B are connected to each other by the roof connecting member 32.

[0096] The plywood 323 is a member for maintaining the distance between the inclined plate portion 741 of the coping board 74 and the inclined surface plate portion 321 of the roof connecting member 32. In other words, when the roof connecting member 32 is correctly attached, the plywood 323 can support the inclined surface plate portion 321 while resting on the inclined surface plate portion 741, thereby allowing the inclined surface plate portion 321 of the roof connecting member 32 to maintain a predetermined inclination angle.

[0097] (Exterior wall connection method) Here, a method for connecting the residential units 1A and 1B on the outer wall side will be described. First, one residential unit 1A and the other residential unit 1B are transported separately (transportation step). In this transportation step, the parapet body (hanging hardware 71, parapet wall timbers 72, 73) is transported covered with coping 74, which makes it possible to prevent rainwater from flowing into the parapet 7 during transportation. Next, as shown in Fig. 27, one residential unit 1A and the other residential unit 1B are aligned horizontally so that their parapets 7 are parallel (horizontal arrangement step). As a result, as shown in Fig. 25, not only the parapets 7 but also the sleeve walls 8 are arranged parallel to each other.

[0098] Next, a wall connecting member 31 is attached across the end wood cover 530 of one residential unit 1A and the end wood cover 530 of the other residential unit 1B, thereby joining the sleeve wall 8 provided in one residential unit 1A and the sleeve wall 8 provided in the other residential unit 1B (wall connecting step). In the wall connecting step, first, the connecting bolts 534 (see FIG. 20) attached to the sleeve wall 8 are removed.

[0099] Next, the wall connecting member 31 is positioned so that the first panel portion 311 abuts the first panel portion 531 of the end cover 530 in the two residential units 1A and 1B, one second panel portion 312 faces the second panel portion 532 of the end cover 530 in one residential unit 1A, and the other second panel portion 312 faces the second panel portion 532 of the end cover 530 in the other residential unit 1B, and cushioning material 314 is filled between the second panel portion 312 of the wall connecting member 31 and the second panel portion 532 of the end cover 530. In this state, connecting bolt 534 removed from sleeve wall 8 is inserted through the bolt hole formed in second face plate portion 312 of wall connecting member 31, passed through buffer material 314, the bolt hole formed in second plate portion 532 of end cover 530, and the bolt hole formed in hat-shaped accessory 53d, and screwed into nut 535 fixed to hat-shaped accessory 53d. In this way, wall connecting member 31 is attached across end cover 530 of one residential unit 1A and end cover 530 of the other residential unit 1B, and the wall connecting member 31 joins sleeve wall 8 provided in one residential unit 1A and sleeve wall 8 provided in the other residential unit 1B.

[0100] Next, the roof connecting member 32 is attached across the fascia 74 of one residential unit 1A and the fascia 74 of the other residential unit 1B, thereby joining the parapet 7 provided on one residential unit 1A and the parapet 7 provided on the other residential unit 1B (roof connecting step). In the roof connecting step, first, the connecting bolts 78 (see FIG. 22(a)) attached to the parapet 7 are removed.

[0101] Next, the roof connecting member 32 is positioned so that the plywood 323 abuts the inclined plate portion 741 of the fascia 74 of the two residential units 1A and 1B, one fixed panel portion 322 faces the fixed panel portion 743 of the fascia 74 of one residential unit 1A, and the other fixed panel portion 322 faces the fixed panel portion 743 of the fascia 74 of the other residential unit 1B, and cushioning material 324 is filled between the fixed panel portion 322 of the roof connecting member 32 and the fixed panel portion 743 of the fascia 74. In this state, the connecting bolt 78 removed from the parapet 7 is inserted through the bolt hole formed in the fixed face plate portion 322 of the roof connecting member 32, passed through the buffer material 324, the bolt hole formed in the fixed plate portion 743 of the coping 74, and the bolt hole formed in the second vertical plate portion 753 of the coping receive bracket 75, and screwed into the nut 755 fixed to the second vertical plate portion 753. In this way, the roof connecting member 32 is attached across the coping 74 of one residential unit 1A and the coping 74 of the other residential unit 1B, and the roof connecting member 32 joins the parapet 7 provided on one residential unit 1A to the parapet 7 provided on the other residential unit 1B. In this manner, the outer wall sides of the residential units 1A and 1B are connected.

[0102] (Internal connection means) FIG. 29 is a vertical cross-sectional view illustrating the configuration of the ceiling connecting member 33 and the connecting floor panel 34, and FIG. 30 is a horizontal cross-sectional view illustrating the configuration of the connecting wall panel 35. The ceiling connecting member 33 is a plate-like member that joins the cross members 58 on the connection sides (the sides connected by the connecting means 30) of the two residential units 1A, 1B. The ceiling connecting member 33 is provided across the cross member 58 that forms the opening 5a on the connection side of one residential unit 1A and the cross member 58 that forms the opening 5a on the connection side of the other residential unit 1B, and is fastened with screws or bolts to these cross members 58. The underside of the ceiling connecting member 33 (the surface facing the living space S) is provided with a trim frame, a continuous window batten, etc. In the example shown in Figure 29, a sash for a hanging door H is attached to one end of the ceiling connecting member 33 (the part on the side of the other residential unit 1B). The sash is not limited to a sash for a hanging door H, and may be, for example, a sash for a door Dr or a sash for a window W. The sash may be attached to both ends of the ceiling connecting member 33 (the part on the side of one residential unit 1A and the part on the side of the other residential unit 1B), or it does not have to be attached to the ceiling connecting member 33. Furthermore, a heat insulating material 33a is filled between the horizontal members 58 on the connecting side of the two residential units 1A, 1B.

[0103] The connecting floor panel 34 is a connecting panel that joins the connecting side (the side connected by the connecting means 30) of the ends of the floor portions 4 of the two residential units 1A, 1B. The connecting floor panel 34 is fixed and bridges between the end of the floor portion 4 of one residential unit 1A that forms the connecting side opening 5a and the end of the floor portion 4 of the other residential unit 1B that forms the connecting side opening 5a. The basic structure of the connecting floor panel 34 is similar to the basic structure of the wooden panels described above, with vertical and horizontal frame members A and B assembled into a rectangular shape, and auxiliary crosspieces C assembled lengthwise and widthwise inside the rectangular frame formed by these vertical and horizontal frame members A and B to form a panel frame, with face materials D and E attached to one or both sides of this panel frame, creating a hollow interior. Furthermore, the hollow interior is usually filled with insulating material F such as glass wool or rock wool. In addition, the vertical and horizontal frame materials A and B, auxiliary crosspiece material C, and face materials D and E that make up the wood panel are firmly joined together with adhesive. Although the connecting floor panel 34 shown in FIG. 29 does not have an outer surface material E, an outer surface material E may be provided.

[0104] Here, unlike the wooden panels described above, the connecting floor panels 34 are panels with a T-shaped cross section. Specifically, in the connecting floor panels 34, the insulating material F protrudes below the panel frame body consisting of vertical and horizontal frame members A, B and auxiliary crosspiece members C. Furthermore, the half base 42 at the end of the floor section 4 that forms the connecting-side opening 5a (hereinafter referred to as the connecting-side half base 42) has a shorter height dimension (vertical dimension) than the other half bases 42, and the top surface of the connecting-side half base 42 is located below the top surface of the floor wood panel 41. In other words, a step is provided between the floor wood panel 41 and the connecting-side half base 42, and by fitting the end (vertical frame A) of the connecting floor panel 34, which has a T-shaped cross section, into this step, the connecting floor panel 34, the floor wood panel 41 in one residential unit 1A, and the floor wood panel 41 in the other residential unit 1B are connected in a continuous state. A connecting floor finishing material 34a is provided as an interior finishing material on the inner surface (the surface facing the living space S) of the connecting floor panel 34. The connecting floor finishing material 34a may be the same as or different from the floor surface material 4a. In addition, a floor trim or the like is provided in the gap between the connecting floor finishing material 34a and the floor surface material 4a.

[0105] The connecting wall panel 35 is a connecting panel that joins the support materials 54 on the connecting sides (sides connected by the connecting means 30) of the two residential units 1A, 1B. The connecting wall panel 35 is provided across the support material 54 that forms the opening 5a on the connecting side of one residential unit 1A and the support material 54 that forms the opening 5a on the connecting side of the other residential unit 1B, and is fastened with screws to these support materials 54. The inner surface of the connecting wall panel 35 (the surface facing the living space S) is provided with a trim frame, continuous window battens, etc.

[0106] The basic structure of the connecting wall panel 35 is similar to that of the wooden panels described above, with vertical and horizontal frame members A and B assembled into a rectangular shape, and auxiliary crosspieces C assembled lengthwise and widthwise inside the rectangular frame formed by these vertical and horizontal frame members A and B to form a panel frame, with face materials D and E attached to one or both sides of this panel frame, creating a hollow interior. Furthermore, the hollow interior is usually filled with insulating material F, such as glass wool or rock wool. In addition, the vertical and horizontal frame materials A and B, auxiliary crosspiece material C, and face materials D and E that make up the wood panel are firmly joined together with adhesive. Although the connecting wall panel 35 shown in FIG. 30 does not have an outer face material E, an outer face material E may be provided.

[0107] <<Variation>> Multiple residential units can be connected not only horizontally but also vertically. Figure 31 shows an example in which multiple residential units are connected horizontally and vertically. In the following modifications, the same components as those in the above-described embodiment are given the same reference numerals, and their explanations will be omitted or simplified. For ease of explanation, the long side direction of the residential unit 1, i.e., the long side direction of the base frame 2 and the long side direction of the unit main body 3, will be referred to as the "left-right direction."

[0108] In the example shown in FIG. 31 , residential unit 1 (residential unit 1 in the above-described embodiment) constitutes the first floor, and residential unit 100, which is shorter in the left-right direction than residential unit 1, constitutes the second floor. Specifically, one residential unit 1A (one residential unit 1A in the above-described embodiment) on the first floor is vertically connected to one residential unit 100A on the second floor, and the other residential unit 1B (the other residential unit 1B in the above-described embodiment) on the first floor is vertically connected to the other residential unit 100B on the second floor. Furthermore, two residential units on the same floor are horizontally connected. Specifically, adjacent long sides of two residential units 1 (1A, 1B) on the first floor are connected via connecting means 30, and adjacent short sides of two residential units 100 (100A, 100B) on the second floor are connected via connecting means 30.

[0109] In this modified example, two residential units 1,100 are connected vertically, but this is not limited to this, and it is also possible to connect three or more residential units 1,100, . . . vertically. In addition, in this modified example, two residential units 1A, 1B (100A, 100B) are connected horizontally, but this is not limited to this, and it is also possible to connect three or more residential units 1A, 1B, ... (100A, 100B, ...) horizontally. In addition, in this modified example, the number of residential units on the first floor is the same as the number of residential units on the second floor, but this is not limited to this, and there may be floors with a different number of residential units than other floors. In addition, in this modified example, the left-right dimension of the residential unit 100 on the second floor is shorter than the left-right dimension of the residential unit 1 on the first floor, but this is not limited to this, and for example, the left-right dimension of the residential unit 100 on the second floor may be approximately equal to the left-right dimension of the residential unit 1 on the first floor. In addition, in this modified example, the height dimension (vertical dimension) of the residential unit 100 on the second floor is approximately equal to the height dimension of the residential unit 1 on the first floor, but this is not limited to this, and the height dimension of the residential unit 100 on the second floor may be shorter or longer than the height dimension of the residential unit 1 on the first floor.

[0110] The second-floor residential unit 100 comprises a substantially rectangular base frame 200 and a substantially rectangular box-shaped unit body 300 supported by the base frame 200. The unit body 300 is made of wood and comprises a plurality of wood panels 41, 51, 61 with heat insulating properties. These multiple wood panels 41, 51, 61 form the outer shell of the living space S, which is a room, and constitute the floor, walls, and ceiling (or roof) of the second floor.

[0111] The base frame 200 is formed by assembling steel frame materials into a substantially rectangular frame shape. In this modified example, the base frame 200 is made of steel, but is not limited to this and may be made of reinforced concrete or steel-reinforced concrete.

[0112] The unit body 300 is formed by assembling a plurality of pillars 52 and a plurality of wooden panels into a roughly rectangular box shape. The plurality of wooden panels are outer shell components with thermal insulation properties made of wood with low thermal conductivity, and form the outer shell of the residential unit 100. The plurality of wood panels in the unit body 300 include, similar to the plurality of wood panels in the unit body 3 of the first floor, a plurality of floor wood panels 41 that form the floor portion 400 of the unit body 300, a plurality of wall wood panels 51 that form the wall portion 500 of the unit body 300, and a plurality of roof wood panels 61 that form the roof portion 600 of the unit body 300.

[0113] (Base frame for the second floor) FIG. 32 is a diagram illustrating the configuration of the base frame 200 of the second floor, where (a) is a plan view and (b) and (c) are side views. As shown in Fig. 32, the base frame 200 is configured to include short-side frame members 21 that are elongated along the long-side direction of the residential unit 100, and first long-side frame members 22 that are elongated along the short-side direction (left-right direction) of the residential unit 100. In addition, metal joints 24 are integrally provided on both ends of the short-side frame members 21. In other words, the short-side frame members 21 and the first long-side frame members 22 are connected via the metal joints 24. These steel frame members 21, 22, 24 that make up the base frame 200 are rigidly joined by bolts, welding, etc.

[0114] In this way, the base frame 200 of the second floor is composed of the short side frame member 21, the first long side frame member 22, and the connecting metal fittings 24 of the steel frame members 21 to 24 that make up the base frame 2 of the first floor. The base frame 2 of the first floor has two rectangular frame bodies each consisting of two short-side frame members 21, two first long-side frame members 22, and four connecting metal members 24 (see Figure 2), and in this modified example, the base frame 200 of the second floor is positioned above the right-hand rectangular frame body of the two rectangular frame bodies.

[0115] (Second floor floor) FIG. 33(a) is a plan view illustrating the configuration of the floor section 400 of the second floor. As shown in FIG. 33(a), the floor section 400 of the unit body 300 includes a floor wood panel 41 and a half base 42. The dimension of the long side of the floor section 400 is set to be approximately the same as the dimension of the long side of the base frame 200. On the other hand, the dimension of the short side of the floor section 400 is set to be shorter than the dimension of the short side of the base frame 200 (shorter by two steps D1). That is, the short side end faces of the floor section 400 are approximately flush with the side end faces (tip faces of the upper flange and the lower flange) of the first long side frame member 22 of the base frame 200, and the long side end faces of the floor section 400 are approximately flush with the side end faces (tip faces of the upper flange and the lower flange) of the short side frame member 21 of the base frame 200. The floor section 400 is placed on the base frame 200 and fastened to the base frame 200 with bolts.

[0116] (Wall part of the second floor) 33(b) and 34 are diagrams illustrating the configuration of the wall portion 500 of the second floor, with FIG. 33(b) being a cross-sectional view and FIGS. 34(a) and (b) being side views. 33(b), the wall 500 of the unit body 300 comprises one U-shaped wall body 50 and a wall wood panel 51 located between two pillars 52 arranged at the open end of the U-shaped wall body 50. The wall 500 is arranged so that the two corners of the U-shaped wall body 50 coincide with the two corners of the long sides of the floor 400, and is fastened to the floor 400 with screws or bolts while placed on the floor 400. 34, the pillars 52 are erected above the metal joints 24 of the base frame 200 via the wooden floor panels 41 and the half base 42. In this modification, the base frame 200 is provided with four metal joints 24, and therefore the wall section 500 is provided with a total of four pillars 52.

[0117] Of the upper and lower connecting metal fittings 522 attached to the second-floor pillars 52, a hanging metal fitting 71 is fixed to the upper connecting metal fitting 522. A first parapet wall timber 72 is hung between the hanging metal fittings 71 facing each other in the left-right direction (the direction of the short sides of the unit body 300). Specifically, the second-floor unit body 300 is provided with a long parapet 7 at each of both ends of the long side of the unit body 300, extending along the short side of the unit body 300. This parapet 7 is configured to include at least a hanging hardware 71, a first parapet wall timber 72, and a coping board 74, and protrudes above the roof of the second floor. In other words, the parapet 7 on the second floor is positioned so that its extension direction is aligned with the extension direction of the parapet 7 on the first floor.

[0118] The wall portion 500 of the second floor has only one U-shaped wall body 50. In other words, the wall portion 500 of the second floor does not have a cross member 58 that connects the pair of U-shaped wall bodies 50. Furthermore, in the wall portion 500 of the second floor, the support members 54 protrude outward in the left and right directions, similar to the sleeve wall lumber 53, and function as the sleeve wall body. Specifically, since the support member 54 of the first floor is a member for supporting the cross member 58, the lower end surface of the support member 54 is approximately flush with the lower end surface of the column 52 of the first floor (the second horizontal wall portion 10b of the lower connecting hardware 522), whereas the upper end surface of the support member 54 is located below the upper end surface of the column 52 of the first floor (the second horizontal wall portion 10b of the upper connecting hardware 522). On the other hand, the support members 54 on the second floor are not members for supporting the cross members 58 but members that function as the sleeve wall main body, and therefore, like the sleeve wall lumber 53 on the second floor, the support members 54 are located outside the base frame 200, and their lower end faces are approximately flush with the lower end faces of the second floor half bases 42, and their upper end faces are approximately flush with the upper faces of the second floor hanging hardware 71. Furthermore, the support members 54 on the second floor are covered with end grain covers 530. That is, the second floor sleeve walls 8 are integrally formed at both ends of the parapet 7 of the second floor, and these second floor sleeve walls 8 are composed of at least the sleeve wall body (sleeve wall wood 53, support material 54) and a wood edge cover 530.

[0119] Of the long side wall wood panels 51C, 51D that make up the U-shaped wall 50 on the second floor, the long side wall wood panel 51C, 51D that is connected by the connecting means 30 may have an opening for passing between the two residential units 100A, 100B on the second floor. In addition, a sash for a door Dr, a sash for a window W, or a sash for a hanging door H may be installed in this opening. In this modification, short-side wall wood panels 51A and 51B, which are load-bearing wall panels, are used as the wall wood panels 51 located between the two pillars 52 at the open end of the U-shaped wall 50 on the second floor, but this is not limited to this. That is, the wall wood panels 51 located between the two pillars 52 at the open end of the U-shaped wall 50 on the second floor may be load-bearing wall panels or partition wall panels.

[0120] (Roof of the second floor) The roof section 600 of the unit body 300 includes a roof wooden panel 61 and a panel support section 62. The dimensions of the long side and short side of the roof section 600 are set so that the four corners of the roof section 600 fit into the corners of the wall section 500. The roof section 600 is fastened to the inner surface of the wall section 500 (the surface facing the living space S) with screws or bolts.

[0121] The roof portion 600 of the second floor is a gable roof, and has a roof surface that flows in both left and right directions from a ridge that is perpendicular to the left and right directions. The unit body 300 is provided with a parapet 7 at each end of the long side of the unit body 300. Therefore, rain that falls on the roof is drained from both ends of the short side (left and right) of the unit body 300. Therefore, by making the roof section 600 a gable roof with roof surfaces that flow in both left and right directions, rain that falls on the roof can be forced to flow to both ends of the short side of the unit body 300, allowing for smooth drainage. The roof 600 of the second floor, like the roof 6 of the first floor, is not limited to a gable roof with roof surfaces flowing in both left and right directions, but may be a sloped roof or a flat roof. The roof 6 of the first floor and the roof 600 of the second floor may have the same shape or different shapes.

[0122] An opening may be provided in the roof 6 of the first floor and the floor 400 of the second floor to connect the living space S of the first floor with the living space S of the second floor. This opening may also be provided with an elevator means such as a staircase or ladder that connects the floor 4 of the first floor with the floor 400 of the second floor. If no such opening is provided, an elevator means such as an external staircase or ladder for entering and exiting the living space S of the second floor may be provided on the outside of the residential unit 1,100.

[0123] (Interior and exterior of second floor) The unit body 300 on the second floor is fitted with the same interior finishing materials as the unit body 3 on the first floor, i.e., the same interior finishing materials (floor material 4a, interior wall material 5b, ceiling material 6a, insulation material 6b, etc.) as the unit body 3 of the residential unit 1 in the above-mentioned embodiment. In addition, the unit body 300 on the second floor is fitted with exterior finishing materials similar to those of the unit body 3 on the first floor, i.e., exterior finishing materials similar to those of the unit body 3 of the residential unit 1 in the above-mentioned embodiment (edge cover 530, exterior wall material 5c, arabesque 63, eaves drip edge 64, wall stopper 65, sealing materials 53e, 53f, roof surface material, waterproof sheet 6d, fascia board 74, foundation drip edge 43, etc.).

[0124] In addition, to connect the residential units 100A and 100B on the second floor, the same connecting means 30 is used as to connect the residential units 1A and 1B on the first floor, i.e., the same connecting means 30 as to connect the residential units 1A and 1B in the above-mentioned embodiment. Furthermore, in this modified example, in addition to the connecting means 30 that connects the residential units 1,100 horizontally, connecting means (connecting bolts 26, cross flat seats 27, etc.) that connect the residential units 1,100 vertically (up and down) are used.

[0125] (Vertical connection) Fig. 35 is a diagram for explaining the connection in the vertical direction. For convenience, the protrusions 244, nuts 245a, and the like provided inside the metal joint 24 are not shown in Fig. 35. As shown in Figure 35, the base frame 200 and unit body 300 of the second floor are connected by stud bolts 56, similar to the base frame 2 and unit body 3 of the first floor (see Figure 3(b)). The long side end faces (left end face, right end face) of the floor section 400 of the second floor are substantially flush with the side end faces (tip faces of the upper flange, tip faces of the lower flange) of the short side frame members 21 of the base frame 200 of the second floor. Therefore, similar to the first floor (see Figure 3(b)), in the second floor as well, a step D2 is provided between the joint metal fittings 24 at the four corners of the base frame 200 and the floor section 400 resting on the base frame 200.

[0126] The second-floor residential unit 100 rests on the parapet body (hanging hardware 71, parapet wall timbers 72, 73) of the first-floor residential unit 1 and is bolted to the parapet body (specifically, hanging hardware 71). The tip end face of the upper flange of the right-side short-side frame member 21 of the second-floor base frame 200 is approximately flush with the right end face of the first-floor parapet body, i.e., the right end faces of the two right-side hanging hardware 71 of the four corner hanging hardware 71 of the first floor (the end faces opposite the end face that contacts the first parapet wall timber 72). Therefore, as shown in Figure 35, a step D3 is provided between the two right-side connecting hardware 24 of the four corner connecting hardware 24 of the second floor and the two right-side hanging hardware 71 of the four corner hanging hardware 71 of the first floor.

[0127] Specifically, the residential unit 1 on the first floor and the residential unit 100 on the second floor are connected by a connecting bolt 26. This connecting bolt 26 is inserted through an opening in the connecting metal fitting 24 on the second floor, passes through an elongated hole 243 provided in the connecting metal fitting 24 and an upper / lower joining through-hole 713 provided in the hanging metal fitting 71 on the first floor, and is screwed into a nut 713a provided on the hanging metal fitting 71. Here, the elongated hole 243 of the connecting metal member 24 is a hole for twist locking, and has a size that allows the head of the connecting bolt 26 to pass through. Therefore, when the connecting bolt 26 is passed through the elongated hole 243, it is passed through the cross flat washer 27.

[0128] FIG. 36 is a diagram for explaining the configuration of the cross flat seat 27, where (a) is a plan view, (b) is a side view, and (c) is a plan view for explaining an example of use. 36(a) and (b), the cross flat seat 27 is a cross-shaped washer. Specifically, the cross flat seat 27 is a washer having a pair of first protruding pieces 27a that protrude opposite each other in the left-right direction and a pair of second protruding pieces 27b that protrude opposite each other in a direction perpendicular to the left-right direction. A through hole 271 is formed in the center of the cross flat seat 27, and is sized so that the head of the connecting bolt 26 cannot pass through but the shaft of the connecting bolt 26 can pass through.

[0129] 36(c), the dimensions of the cross flat seat 27 are set so that it cannot pass through the elongated hole 243 of the metal joint 24. Specifically, the dimension between the tip surfaces of the pair of first protruding pieces 27a in the protruding direction is set to be shorter than the longitudinal dimension of the elongated hole 243 but longer than the lateral dimension of the elongated hole 243. In addition, the dimension between the tip surfaces of the pair of second protruding pieces 27b in the protruding direction is set to be longer than the lateral dimension of the elongated hole 243. Furthermore, the cross flat seat 27 is sized so that one of the pair of protrusions 244 of the connecting hardware 24 is positioned at the corner formed by one side of the pair of first protrusions 27a and one side of the pair of second protrusions 27b, and the other of the pair of protrusions 244 of the connecting hardware 24 is positioned at the corner formed by the other side of the pair of first protrusions 27a and the other side of the pair of second protrusions 27b. In other words, the pair of protrusions 244 are positioned to prevent rotation (clockwise and counterclockwise) of the cross flat seat 27. Therefore, when the connecting bolt 26 is screwed into the nut 713a, the cross flat seat 27 does not rotate together, and the connecting bolt 26 can be tightened smoothly.

[0130] In this way, by using the cross flat seat 27, the same material as the connecting hardware 24 of the base frame 2 of the first floor can be used as the connecting hardware 24 of the base frame 2 of the second floor. In other words, by using the cross flat seat 27, the hole for the twist lock (long hole 243) can be converted into a hole (through hole 271) suitable for the connecting bolt 26 that connects the first floor and second floor.

[0131] The residential units 100 on the second floor are placed on a pair of parapet bodies in the residential units 1 on the first floor and are bolted to the parapet bodies, so there is a gap the height of the parapet bodies between the roof of the first floor and the residential units 100 on the second floor. Therefore, water pipes, gas pipes, electric lines, communication lines, etc. for the second floor can be routed from inside the residential units 100 on the second floor to the outside of the residential units 1,100 through this gap. In other words, piping and wiring for the second floor can be installed without passing through the residential units 1 on the first floor, reducing the effort required for piping and wiring. Furthermore, a top panel cover 45 (or a top panel cover 47) is attached as an exterior finishing material between the residential unit 1 on the first floor and the residential unit 100 on the second floor.

[0132] Figures 37 and 38 are diagrams explaining the configuration of the fascia cover 45, where Figure 37(a) is an assembly configuration diagram, Figure 37(b) is a standard installation diagram, Figure 37(c) is a roof-mounted installation diagram, Figure 38(a) is an oblique view of the first fascia cover 45A, and Figure 38(b) is a layout diagram of the first fascia cover 45A and the second fascia cover 45B. 37, the top panel cover 45 is made of, for example, PVC steel plate, and includes a covering panel portion 45a that covers from above the foundation drip edge 43 attached to the floor portion 400 of the second floor, and a hanging panel portion 45b that extends downward from one end of the covering panel portion 45a. The tip of the hanging panel portion 45b is bent inward (toward the residential unit 100). A recessed groove portion 45c is provided in the center of the hanging panel portion 45b.

[0133] The other end of the covering plate portion 45a is in contact with the foundation undercut 43 attached to the floor portion 400 (semi-foundation 42) of the second floor, and is fastened with screws to the foundation undercut 43 (and the semi-foundation 42). In addition, an elastic member 45d such as EPDM (Ethylene Propylene Diene Monomer) is arranged between the other end of the covering plate portion 45a and the foundation undercut 43. Further, the recessed groove portion 45c of the hanging plate portion 45b is fastened with a screw to an angle member 46 fixed to the base frame 200 of the second floor portion.

[0134] The angle member 46 is an L-shaped member including a bottom plate portion 46a and an upright plate portion 46b extending upward from one end of the bottom plate portion 46a, and a stopper 46c is provided on the underside of the bottom plate portion 46a. The angle member 46 is in a state where the upright plate portion 46b extending upward from one end of the bottom plate portion 46a is positioned outward from the other end of the bottom plate portion 46a, and the stopper 46c is in contact with the tip end surfaces of the lower flanges of the frame members 21 and 22 of the base frame 200 of the second floor, and the other end of the bottom plate portion 46a is fastened to the lower flange with screws or bolts. In this way, after the angle iron 46 is fixed to the base frame 200 of the second floor, the groove portion 45c of the fascia board cover 45 is screwed to the upright plate portion 46b of the angle iron 46, and the covering plate portion 45a of the fascia board cover 45 is screwed to the foundation drip edge 43 (and half base 42). The dimensions of the top panel cover 45 and the angle member 46 are set so that the hanging panel portion 45b of the top panel cover 45 is positioned outside the exterior wall material 5c of the first floor portion.

[0135] The residential units 100 on the second floor are placed on a pair of parapet bodies in the residential units 1 on the first floor and are bolted to the parapet bodies. Therefore, a gap equal to the height of the parapet bodies is provided between the roof of the first floor and the residential units 100 on the second floor. In addition, a gap equal to the thickness of the base frame 200 is provided between the sleeve wall 8 on the first floor and the sleeve wall 8 on the second floor. 37(a) and (b) are diagrams showing the attachment of the fascia cover 45 at the abutting portion between the first-floor residential unit 1 and the second-floor residential unit 100. At this abutting portion, the base frame 200 of the second floor abuts against the parapet body of the first floor, so the screws that secure the angle irons 46 to the base frame 200 reach the parapet body of the first floor (specifically, the first parapet wall lumber 72).

[0136] 37(c) is a diagram showing the attachment of the panel cover 45 above the roof of the first floor in the area where the residential unit 1 on the first floor and the residential unit 100 on the second floor are separated. Since the base frame 200 on the second floor is not in contact with the roof of the first floor, the angle iron 46 is fixed to the base frame 200 by bolts 46d. Although not shown, the top panel cover 45 and the angle member 46 are also attached between the sleeve wall 8 of the first floor and the sleeve wall 8 of the second floor in the area where the residential unit 1 of the first floor and the residential unit 100 of the second floor are separated. In this case, the angle member 46 is fastened with screws to the sleeve wall lumber 53 of the first floor (see Figure 39(d)).

[0137] 38, the header cover 45 includes a first header cover 45A provided between the sleeve wall 8 of the first floor portion and the sleeve wall 8 of the second floor portion, and a second header cover 45B provided elsewhere. The edge of the first header cover 45A is positioned outside the edge of the adjacent second header cover 45B and overlaps with said edge. In other words, the first header cover 45A is attached after the second header cover 45B is attached.

[0138] 39 and 40 are diagrams illustrating modified examples of the header cover. Specifically, Fig. 39 illustrates the configuration of the header cover 47, with (a) being an assembly diagram, (b) being a standard installation diagram, (c) being a roof installation diagram, and (d) being a sleeve wall installation diagram. Fig. 40 is a layout diagram of the first header cover 47A and the second header cover 47B. Headboard cover 47 is a member made of, for example, PVC steel plate, and as shown in Figure 39, includes covering plate portion 47a that covers foundation drip edge 43 attached to floor portion 400 of the second floor from above, and hanging plate portion 47b that extends downward from one end of covering plate portion 47a. The tip of hanging plate portion 47b is bent inward (toward residential unit 100). In addition, a recessed groove portion 47c is provided in the center of hanging plate portion 47b. In header panel cover 47, the upper part of hanging plate portion 47b (the part above recessed groove portion 47c) is located outside the lower part of hanging plate portion 47b (the part below recessed groove portion 47c), which makes it difficult for rainwater that has run down the upper part of hanging plate portion 47b to flow into recessed groove portion 47c.

[0139] The other end of the covering plate portion 47a is in contact with the foundation flashing 43 attached to the floor portion 400 (semi-foundation 42) of the second floor, and is fastened with screws to the foundation flashing 43 (and the semi-foundation 42). An elastic material such as EPDM may be disposed between the other end of the covering plate portion 47a and the foundation flashing 43. As shown in Figure 39(d), the foundation flashing 43 is attached to the sleeve wall lumber 53 of the second floor, and the other end of the covering plate portion 47a of the first curtain board cover 47A, which is provided between the sleeve wall 8 of the first floor and the sleeve wall 8 of the second floor, is in contact with the foundation flashing 43 attached to the sleeve wall lumber 53 of the second floor, and is fastened with screws to the foundation flashing 43 (and the sleeve wall lumber 53). Similarly, with the aforementioned fascia board cover 45, the other end of the covering board portion 45a of the first fascia board cover 45A is in contact with the foundation drip edge 43 attached to the sleeve wall timber 53 of the second floor, and is screwed to the foundation drip edge 43 (and the sleeve wall timber 53). Further, the recessed groove portion 47c of the hanging plate portion 47b is screwed to angle members 48, 49 fixed to the base frame 200 of the second floor portion and the lumber 53 for the sleeve wall of the first floor portion.

[0140] The angle members 48, 49 include a base angle member 48 and a top panel angle member 49. The base angle 48 is an L-shaped member including a bottom plate portion 48a and an upright plate portion 48b extending upward from one end of the bottom plate portion 48a. The base angle 48 is in a state in which the upright plate portion 48b extending upward from one end of the bottom plate portion 48a is positioned more inward than the other end of the bottom plate portion 48a, and the upright plate portion 48b is positioned between the lower flange and the upper flange of the frame members 21, 22 of the base frame 200 of the second floor (or between the sleeve wall lumber 53 of the first floor and the sleeve wall lumber 53 of the second floor), and the other end of the bottom plate portion 48a is fastened with screws or bolts to the lower flange (or the sleeve wall lumber 53 of the first floor).

[0141] The header panel angle 49 includes a horizontal surface portion 49a, a first vertical surface portion 49b extending downward from one end of the horizontal surface portion 49a, and a second vertical surface portion 49c extending upward from the other end of the horizontal surface portion 49a. The header panel angle 49 is positioned so that the first vertical surface portion 49b is located more inward than the second vertical surface portion 49c, and the first vertical surface portion 49b is fastened to the upright panel portion 48b of the base angle 48 with a screw. In this way, after the fascia board angle 49 is fixed to the base frame 200 of the second floor (or the sleeve wall timber 53 of the first floor) via the base angle 48, the groove portion 47c of the fascia board cover 47 is screwed to the second vertical surface portion 49c of the fascia board angle 49, and the covering plate portion 47a of the fascia board cover 47 is screwed to the foundation drip edge 43 and the half base 42 (or the foundation drip edge 43 and the sleeve wall timber 53 of the second floor). The dimensions of the top panel cover 47 and the angle members 48, 49 are set so that the lower part of the hanging panel portion 47b of the top panel cover 47 is positioned outside the exterior wall material 5c of the first floor portion.

[0142] 39(a) and (b) are diagrams showing the attachment of the fascia cover 47 at the abutting portion between the first-floor residential unit 1 and the second-floor residential unit 100. At this abutting portion, the base frame 200 of the second floor abuts against the parapet body of the first floor, so the screws that secure the base angle 48 to the base frame 200 reach the parapet body of the first floor (specifically, the first parapet wall lumber 72). 39(c) is a diagram showing the attachment of the fascia cover 47 above the roof of the first floor in the area where the residential unit 1 on the first floor and the residential unit 100 on the second floor are separated. Since the base frame 200 on the second floor is not in contact with the roof of the first floor, the base angle 48 is fixed to the base frame 200 by bolts 48c.

[0143] Also, Figure 39(d) is a diagram showing the attachment mode of the fascia cover 47 between the sleeve wall 8 of the first floor and the sleeve wall 8 of the second floor in the part where the residential unit 1 of the first floor and the residential unit 100 of the second floor are separated. Since the base frame 200 is not provided between the sleeve wall 8 of the first floor and the sleeve wall 8 of the second floor, the base angle 48 is screwed not to the base frame 200 but to the sleeve wall lumber 53 of the first floor. The angle members 48, 49 shown in Figure 39 are divided into two pieces. By dividing the angle members into two, the upright plate portion 48b can be positioned so that it does not interfere with the screw or bolt fastening when fixing the angle members to the base frame 200 or the sleeve wall lumber 53, which makes it possible to more smoothly install the header board cover.

[0144] 40, the header cover 47 includes a first header cover 47A provided between the sleeve wall 8 of the first floor portion and the sleeve wall 8 of the second floor portion, and a second header cover 47B provided elsewhere. The edge of the first header cover 47A is positioned outside the edge of the adjacent second header cover 47B and overlaps with said edge. In other words, the first header cover 47A is attached after the second header cover 47B is attached.

[0145] (Upper and lower connection method) Here, a method for connecting the residential unit 1 on the first floor and the residential unit 100 on the second floor will be described. First, the residential unit 1 on the first floor and the residential unit 100 on the second floor are transported separately (transportation step). In this transportation step, the parapet body (hanging hardware 71, parapet wall timbers 72, 73) is transported covered with the coping 74, which makes it possible to prevent rainwater from flowing into the parapet 7 during transportation. Next, the coping 74 (including the coping support bracket 75 and the insulating material 76) is removed or shifted to expose a part or all of the parapet body of the residential unit 1 on the first floor (the part on which the residential unit 100 on the second floor will rest) and is not covered by the coping 74 (exposure step). The part of the parapet body of the residential unit 1 on the first floor on which the residential unit 100 on the second floor will not rest may remain covered by the coping 74 or may be left uncovered and exposed. If the part on which the residential unit 100 will not rest is also exposed in the exposure step, the part on which the residential unit 100 will not rest is covered with the coping 74 after the vertical arrangement step described below.

[0146] Next, by removing or shifting the coping 74 (including the coping support bracket 75 and the insulating material 76), three or more hanging hardware 71 in the second-floor residential unit 100 are exposed and not covered by the coping 74, and the hanging device 150 is attached to the exposed hanging hardware 71. In addition, the twist lock of the transportation means (chassis 140, truck, trailer, etc.) that transported the second-floor residential unit 100, i.e., the twist lock inserted into the long hole 243 for the twist lock provided in the second-floor residential unit 100, is switched from the locked state to the released state. Thereafter, the second-floor residential unit 100 is lifted up by a crane or the like, and the positions of the multiple elongated holes 243 of the second-floor residential unit 100 are aligned with the positions of the multiple upper and lower joint through-holes 713 of the first-floor residential unit 1, and the second-floor residential unit 100 is placed on the exposed part of the parapet body of the first-floor residential unit 1, thereby aligning the first-floor residential unit 1 and the second-floor residential unit 100 vertically (vertical arrangement step). Then, after the lifting operation is completed and the lifting device 150 is removed, the second-floor fascia 74 that was removed or shifted in this vertical arrangement step is reinstalled.

[0147] Next, using connecting bolts 26 that connect the residential unit 1 on the first floor and the residential unit 100 on the second floor, the parapet body of the residential unit 1 on the first floor is joined to the lower end (base frame 200) of the residential unit 100 on the second floor (upper and lower floor connecting step). In the upper and lower floor connecting step, first, the cross flat seat 27 is attached to the connecting metal fitting 24 of the base frame 200 of the second floor portion. The cross flat seat 27 can be attached by inserting it through the opening of the connecting metal fitting 24.

[0148] Next, connecting bolt 26 is inserted through the opening of connecting metal fitting 24, passed through through hole 271 provided in cross flat seat 27, long hole 243 provided in connecting metal fitting 24, and upper and lower joining through hole 713 provided in hanging metal fitting 71 on the first floor, and screwed into nut 713a provided on said hanging metal fitting 71. By performing this screwing operation (tightening operation) on each of the multiple connecting metal fittings 24 on the second floor, the multiple connecting bolts 26 join the parapet body of residential unit 1 on the first floor to the lower end of residential unit 100 on the second floor. In this manner, the residential units 1,100 are connected in the up-down direction (vertical direction). Thereafter, the header cover 45 (or the header cover 47) is attached.

[0149] The horizontal connections may be performed after the vertical connections, or the horizontal connections may be performed before the vertical connections. In other words, the order of performing the upper and lower floor connection steps, the wall connection step, and the roof connection step can be selected as appropriate. Specifically, the upper and lower floor connection steps may be performed, followed by wall connection steps and roof connection steps for the residential units 1A and 1B on the first floor, and wall connection steps and roof connection steps for the residential units 100A and 100B on the second floor. Alternatively, wall connection steps and roof connection steps may be performed for residential units 1A and 1B on the first floor, and wall connection steps and roof connection steps for residential units 100A and 100B on the second floor, and then the second floor portion in the connected state may be lifted up and placed on the first floor portion in the connected state, thereby performing the upper and lower floor connection steps. Alternatively, the wall connection step and roof connection step may be performed for the residential units 1A and 1B on the first floor, followed by the upper and lower floor connection step, and then the wall connection step and roof connection step may be performed for the residential units 100A and 100B on the second floor.

[0150] Here, the first floor residential unit 1 can also be installed on a building foundation for use. In this case, the first-floor residential unit 1 is installed on the building foundation using the same procedure as in the vertical placement step. Specifically, the coping 74 (including the coping support bracket 75 and the insulation 76) is removed or shifted to expose three or more hanging hardware 71 on the first-floor residential unit 1, leaving them uncovered by the coping 74. The hanging devices 150 are then attached to the exposed hanging hardware 71. The twist locks of the vehicle (chassis 140, truck, trailer, etc.) that transported the first-floor residential unit 1, i.e., the twist locks inserted into the elongated holes 243 for the twist locks provided on the first-floor residential unit 1, are switched from the locked state to the unlocked state. The first-floor residential unit 1 is then lifted using a crane or the like, and the residential unit 1 is placed on the building foundation with the positions of the elongated holes 243 provided on the residential unit 1 aligned with the positions of the bolt holes (bolt holes for connecting bolts 26) provided on the building foundation. Thereafter, in the same procedure as in the upper and lower floor connecting step, the building foundation and the lower end of the first floor residential unit 1 are joined using connecting bolts 26 and cross flat seats 27. This allows the first floor residential unit 1 to be connected to the building foundation by the connecting bolts 26.

[0151] Alternatively, anchor bolts may be provided in the building foundation. In this case, the first-floor residential unit 1 is lifted using a crane or the like, and placed on the building foundation with the positions of the multiple elongated holes 243 provided in the residential unit 1 aligned with the positions of the multiple anchor bolts provided in the building foundation. As a result, the upper ends of the anchor bolts are placed in the connecting metal fittings 24 through the elongated holes 243. The building foundation and the lower end of the first-floor residential unit 1 are joined by screwing nuts inserted through openings in the connecting metal fittings 24 onto the upper ends of the anchor bolts through cross flat seats 27 inserted through openings in the connecting metal fittings 24. In this way, the first-floor residential unit 1 can be connected to the building foundation using the anchor bolts provided in the building foundation.

[0152] According to the above-described embodiment and modified example, the residential unit 1,100 includes a wooden unit body 3,300 having pillars 52 at its four corners and a base frame 2,200 that is rectangular in plan view and supports the unit body 3,300. The unit body 3,300 includes a pair of U-shaped walls 50 formed by joining a plurality of pillars 52 and a plurality of reinforcing walls (wooden wall panels 51A, 51B, 51C, 51D) in a U-shape in plan view. Each of the pair of U-shaped walls 50 has two of the four corner pillars 52, and is positioned with its open sides facing each other and connected to the base frame 2,200. In other words, the interior of the unit body 3,300 (living space S) is sandwiched between a pair of U-shaped load-bearing wall lines. Therefore, it is only necessary to span the opening 5a between the open end portions of one U-shaped wall body 50 and the other U-shaped wall body 50 with a beam (cross member 58), and there is no need to provide other beams, specifically long-side ceiling beams and short-side ceiling beams that join the upper ends of the pillars 52 at the four corners (pillars 52 arranged at the corner portions), which reduces the effort and cost required and makes the structure suitable for mass production. Furthermore, there is no need to place a load-bearing wall in the opening 5a between the open end portions of one U-shaped wall 50 and the other U-shaped wall 50, and it is possible to use the opening 5a without placing a wall therein or with a partition wall therein, making it suitable for a variety of uses.

[0153] In the embodiment and modified examples, the wall wood panels 51A to 51D are used as the reinforcing walls of the U-shaped wall body 50, but this is not limitative, and the reinforcing walls may be walls that include braces, for example.

[0154] Furthermore, because the base frame 2,200 is connected to the columns 52 of the U-shaped wall body 50, the base frame 2,200 functions as long-side floor beams and short-side floor beams that join the lower ends of the columns 52 at the four corners (the columns 52 arranged in the corner portions). Therefore, there is no need to separately provide long-side floor beams and short-side floor beams, which reduces the labor and cost involved and makes the system suitable for mass production.

[0155] Furthermore, the pillar 52 includes a pillar timber 521 and a connecting hardware 522 attached to the end of the pillar timber 521, and the base frame 2,200 is connected to the connecting hardware 522 of the pillar 52. In other words, because the hardware portion of the pillar 52 (the connecting hardware 522) is connected to the base frame 2,200, the pillar 52 can be firmly connected to the base frame 2,200, and a residential unit 1,100 with excellent durability can be provided.

[0156] Furthermore, the residential unit 1,100 includes a parapet 7 and a sleeve wall 8 that is integral with the parapet 7, so that the residential unit 1,100 has a good appearance. Furthermore, since the parapet 7 extends along the direction in which the pair of U-shaped wall bodies 50 are aligned, and the sleeve wall 8 protrudes outward in the direction in which the pair of U-shaped wall bodies 50 are aligned, it is only necessary to provide eaves members (arabesque 63 and eaves edge drip edge 64) at both ends in the direction in which the pair of U-shaped wall bodies 50 are aligned (left and right direction), which reduces the effort and cost required and makes the structure suitable for mass production.

[0157] In addition, the residential unit 1,100 is provided with a wall stopper 65 arranged to contact the sleeve wall 8, thereby preventing rainwater from flowing into the sleeve wall 8 from the roof. The wall stopper 65 also includes a bottom portion 65a fixed to the roof surface of the unit main body 3,300 and a second side portion 65c rising from one end of the bottom portion 65a, and the bottom portion 65a is fixed to the roof surface with one end coinciding with the eaves-side end of the roof surface of the unit main body 3,300. That is, since the second side portion 65c of the wall stopper 65 is positioned to rise from the eaves-side end of the roof surface, the sealant 53e can be filled not only between the sleeve wall 8 and the exterior wall material 5c (and the eaves edge flashing 64) but also between the sleeve wall 8 and the wall stopper 65. Therefore, the sealant 53e can be filled not only in the center and bottom of the sleeve wall 8 but also in the upper part of the sleeve wall 8 (the part above the roof surface), which enhances the effect of preventing rainwater from flowing into the sleeve wall 8.

[0158] Also, the residential unit 1,100 includes a wooden unit body 3,300 with a parapet 7 at its upper end, and the residential unit 1,100 includes three or more hanging hardware 71 used for lifting work, and the hanging hardware 71 constitutes part of the parapet 7. In other words, the hanging hardware 71 is a dual-purpose member used for two purposes: forming the parapet 7 and lifting the residential unit 1,100. If the hanging hardware 71 is provided as a member for forming the parapet, there is no need to provide a separate member for lifting work, which reduces the effort and cost involved and is suitable for mass production.

[0159] In addition, the unit body 3,300 is equipped with multiple pillars 52, including pillars 52 at the four corners, and the hanging hardware 71 is fixed to the pillars 52. Therefore, by using the hanging hardware 71 to lift the residential unit 1,100, the residential unit 1,100 can be lifted stably, and the lifting work can be carried out safely and efficiently.

[0160] Furthermore, pillar 52 includes pillar lumber 521 and connecting hardware 522 attached to the end of pillar lumber 521, and hanging hardware 71 is fixed to connecting hardware 522. That is, hanging hardware 71 is fixed to the hardware portion (connecting hardware 522) of wooden unit main body 3,300, the majority of which is made of wood, and therefore hanging hardware 71 can be firmly fixed to unit main body 3,300. Therefore, hanging hardware 71 will not come off when lifting residential unit 1,100, allowing the work to be carried out safely and efficiently.

[0161] Furthermore, hanging hardware 71 can be used to connect the lower floor and upper floor. In other words, hanging hardware 71 is a multipurpose component used for three purposes: forming parapet 7, lifting residential units 1,100, and connecting the upper and lower floors. If hanging hardware 71 is provided as a component for forming the parapet, there is no need to provide separate components for lifting or connecting the upper and lower floors, which reduces the effort and cost involved and makes it suitable for mass production.

[0162] Furthermore, the hanging hardware 71 has a hanging through-hole 712 to which the hanging tool 150 is attached during the lifting operation, and an upper / lower joining through-hole 713 to which the connecting bolt 26 is attached when connecting the lower floor and upper floor portions, so even if the hanging through-hole 712 is deformed or damaged during the lifting operation, it does not affect the connection between the upper and lower floors. Therefore, even if the hanging through-hole 712 is deformed or damaged during the lifting operation, the upper and lower floors can be connected as planned without having to take measures such as replacing the hanging hardware 71, making it suitable for mass production.

[0163] The residential unit 1,100 also comprises a unit body 3,300 and a connecting hardware 24 that connects the unit body 3,300 to a structure below the unit body 3,300, and the connecting hardware 24 has a plate portion (underside) with a long hole 243 that corresponds to a twist lock, and a cross flat seat 27 can be attached so as to straddle the long hole 243, and the residential unit 1, etc. can be connected to a structure via the cross flat seat 27. That is, the connecting hardware 24 is a connector for fixing the residential unit 1,100 to the first structure (a structure that fixes the upper unit body 3,300 with a twist lock; specifically, the chassis 140, etc.). By attaching the cross flat seat 27 to the connecting hardware 24, the elongated hole 243 provided in the connecting hardware 24 can be used as a bolt through-hole. Therefore, with the cross flat seat 27 attached, the connecting hardware 24 serves as a connector for fixing the residential unit 100 to the second structure (a structure that fixes the upper unit body 300 with a bolt; specifically, another residential unit 1, etc.). Therefore, the connecting hardware 24 is necessary not only when fixing to the first structure but also when fixing to the second structure. Since the connecting hardware 24 can be used for both the first structure and the second structure simply by attaching and detaching the cross flat seat 27 to and from the connecting hardware 24, it is not necessary to provide both a connector for fixing to the first structure and a connector for fixing to the second structure, which reduces the labor and cost and is suitable for mass production.

[0164] Also, the residential unit 1,100 comprises a wooden unit body 3,300 and a connecting hardware 24 that connects the unit body 3,300 to a structure below the unit body 3,300, and the structure includes a first structure (chassis 140, etc.) that secures the upper unit body 3,300 with a twist lock inserted through a long hole 243, and a second structure (another residential unit 1, etc.) that secures the upper unit body 300 with a connecting bolt 26 inserted through a through hole 271, and the connecting hardware 24 has a long hole 243, and when connecting the unit body 300 to the second structure, a conversion member (cross flat seat 27) that converts the long hole 243 of the connecting hardware 24 to a through hole 271 is attached to the connecting hardware 24. That is, the connecting hardware 24 is a connector for fixing the residential unit 1,100 to the first structure. Attaching the conversion member to the connecting hardware 24 allows the twist lock hole (long hole 243) provided in the connecting hardware 24 to be used as a hole (through hole 271) for the connecting bolt 26, so that the connecting hardware 24, with the conversion member attached, becomes a connector for fixing the residential unit 100 to the second structure. Therefore, the connecting hardware 24 is necessary not only when fixing to the first structure but also when fixing to the second structure. Since the connecting hardware 24 can be used for both the first structure and the second structure simply by attaching and detaching the conversion member to the connecting hardware 24, there is no need to provide both a connector for fixing to the first structure and a connector for fixing to the second structure. This reduces the effort and cost involved and is suitable for mass production.

[0165] The first structure is not limited to the chassis 140, but may be, for example, a truck or a trailer. Furthermore, the second structure is not limited to another residential unit 1 (a residential unit 1 on the lower floor), but may be, for example, a building foundation. Furthermore, the first fixing member is not limited to a twist lock. Furthermore, the second fixing member is not limited to the connecting bolt 26 having a head, but may be, for example, an anchor bolt.

[0166] Furthermore, the elongated hole 243 provided in the connecting metal 24 is a elongated hole compatible with a twist lock, and the conversion member (cross flat seat 27) that can be attached and detached to the connecting metal 24 is a cross-shaped member, so compared to when the shape of the conversion member is other than cross-shaped (for example, circular), the installation space for the conversion member, i.e., the space that must be prepared in advance on the connecting metal 24 to attach the conversion member, can be made smaller. Therefore, the degree of freedom in designing the connecting metal 24 can be increased, which reduces the effort and cost involved and makes it suitable for mass production. Furthermore, the pair of first protruding pieces 27a of the conversion member (cross flat seat 27) protrude in opposite directions from each other along the longitudinal direction of elongated hole 243, and are therefore positioned in the twist-lock position in the released state, while the pair of second protruding pieces 27b of the conversion member protrude in opposite directions from each other along the lateral direction of elongated hole 243, and are therefore positioned in the twist-lock position in the fixed state. Therefore, the position of elongated hole 243 and the like can be set without considering the installation space for the conversion member, and therefore the effort and cost involved can be reduced, making it suitable for mass production.

[0167] Furthermore, the through hole 271 provided in the cross flat seat 27 is a hole corresponding to the bolt, the cross flat seat 27 is a washer that cannot pass through the long hole 243 provided in the connecting hardware 24, and the connecting hardware 24 is provided with a protrusion 244 that prevents the cross flat seat 27 from rotating.Therefore, when the connecting bolt 26 is screwed in, the cross flat seat 27 attached to the connecting hardware 24 does not rotate together, and the connecting work of connecting the unit main body 300 to the second structure (such as another residential unit 1) can be carried out efficiently.

[0168] Furthermore, the first structure is a means of transportation for transporting the residential unit 1,100, and the second structure is another residential unit 1. That is, the connecting metal 24 is a connector for fixing the residential unit 1,100 onto a means of transportation, and when the cross flat seat 27 is attached to the connecting metal 24, it becomes a connector for fixing the residential unit 100 onto another residential unit 1. Therefore, the connecting metal 24 is necessary not only when fixing onto a means of transportation but also when fixing onto another residential unit 1, and since there is no need to provide both a connector for fixing onto a means of transportation and a connector for fixing onto another residential unit 1, the labor and cost can be reduced and the system is suitable for mass production.

[0169] Furthermore, the unit body 3,300 is provided with a plurality of columns 52, including columns 52 at the four corners, and the connecting metal fittings 24 are provided on the base frame 2,200 that supports the unit body 3,300 and are connected to the columns 52. Therefore, the connecting metal fittings 24 are used not only to connect the unit body 3,300 to the first structure (such as the chassis 140) and the unit body 300 to the second structure (such as another residential unit 1), but also to connect the unit body 3,300 to the base frame 2,200 that supports the unit body 3,300. Therefore, if the connecting metal fittings 24 are provided as connectors for fixing the unit body 3,300 to the base frame 2,200, there is no need to separately provide connectors for fixing the unit body 3,300 to the first structure or the second structure, which reduces the effort and cost involved and makes the system suitable for mass production.

[0170] In addition, there is a connection method for connecting one residential unit to another residential unit, in which the residential unit 1,100 is provided with a parapet 7, and the one residential unit is connected to the other residential unit by joining the parapet 7 provided on the one residential unit to the other residential unit. Therefore, compared to joining a part of one residential unit other than the parapet 7 (for example, the roof) to the other residential unit, the fit is better and multiple residential units can be easily connected.

[0171] Furthermore, the parapet 7 comprises a parapet body (hanging hardware 71, parapet wall timbers 72, 73) and a fascia 74 that covers the parapet body, and multiple residential units can be connected vertically simply by performing an exposure step in which the parapet body of one residential unit 1 is exposed and not covered by the fascia 74, a vertical arrangement step in which the one residential unit 1 and the other residential unit 100 are lined up vertically by placing the other residential unit 100 on the exposed part of the parapet body of the one residential unit 1, and a connecting step between upper and lower floors in which the parapet body (specifically the hanging hardware 71) of the one residential unit 1 is joined to the lower end of the other residential unit 100 using connecting bolts 26 that connect the one residential unit 1 and the other residential unit 100, thereby making it possible to connect multiple residential units vertically, and therefore multiple residential units can be connected easily.

[0172] Furthermore, the means of transport (chassis 140, etc.) that transports residential units 1,100 is provided with fixing members (twist locks) for fixing residential units 1,100 to the means of transport, and connecting hardware 24 that engages with the fixing members is provided at the lower end of residential unit 1,100. In the upper and lower floor connecting step, after a cross flat seat 27 that engages with connecting bolt 26 is attached to connecting hardware 24 of the other residential unit 100, connecting bolt 26 is used to connect the parapet body (specifically, hanging hardware 71) of one residential unit 1 to the lower end of the other residential unit 100. Therefore, multiple residential units can be connected vertically simply by attaching cross flat seat 27 to connecting hardware 24 without removing connecting hardware 24, and therefore multiple residential units can be easily connected. Furthermore, before the exposing step, a transport step is performed in which one residential unit 1 and the other residential unit 100 are transported separately. That is, the residential units 1, 100 are transported with the parapet body covered with the coping 74, which prevents rainwater from flowing into the parapet 7 before the upper and lower floor connecting step is performed (during transportation, etc.).

[0173] In addition, multiple residential units can be connected horizontally without removing the fascia 74 by simply performing a horizontal arrangement step in which one residential unit 1A, 100A and the other residential unit 1B, 100B are lined up horizontally so that their parapets 7 are parallel, and then a roof connection step in which a roof connecting member 32 is attached across the fascia 74 of one residential unit 1A, 100A and the fascia 74 of the other residential unit 1B, 100B, thereby joining the parapet 7 provided on one residential unit 1A, 100A to the parapet 7 provided on the other residential unit 1B, 100B.This makes it possible to connect multiple residential units horizontally without removing the fascia 74, making it easy to connect multiple residential units.

[0174] Furthermore, by performing the horizontal arrangement step, the sleeve wall 8 provided on one residential unit 1A, 100A and the sleeve wall 8 provided on the other residential unit 1B, 100B are arranged parallel to each other, and after the horizontal arrangement step, simply by performing the wall connecting step of attaching the wall connecting member 31 across the sleeve wall 8 provided on one residential unit 1A, 100A and the sleeve wall 8 provided on the other residential unit 1B, 100B, the sleeve wall 8 provided on one residential unit 1A, 100A and the sleeve wall 8 provided on the other residential unit 1B, 100B can be joined. Therefore, since the walls of multiple residential units can be connected to each other without removing the cover member (end grain cover 530) that configures the sleeve wall 8, multiple residential units can be easily connected.

[0175] The parapet 7 is also equipped with connecting bolts 78 that secure the coping board 74, and in the roof connecting step, the connecting bolts 78 are removed from the parapet 7 and used to secure the roof connecting members 32. This eliminates the need to prepare separate dedicated parts for securing the roof connecting members 32, and also eliminates the need for the connecting bolts 78 that secured the coping board 74 when the roof connecting members 32 are installed, thereby reducing the effort and cost involved. [Explanation of symbols]

[0176] 1,100 residential units (secondary structure) 2,200 base frame 3,300 unit body 7 Parapet 8 Sode wall 24 Joint metal fittings (joint members, first engaging members) 26 Connecting bolt (connecting member, second fixing member) 27 Cross flat washer (second engaging member) 27a First protruding piece 27b Second protruding piece 31 Wall connecting member 32 Roof connecting member 50 U-shaped wall 51A, 51B, 51C, 51D Wood Panels for Walls (Reinforced Walls) 52 pillars 65 Wall-stopping device 65a Bottom part 65c Second side part (side part) 71 Hanging hardware (parapet body) 72,73 Parapet wall timber (parapet body) 74 Kasagi 78 Connecting bolt (fixing member) 140 Chassis (first structure, means of transport) 150 Hanging equipment 243 Long hole (first hole) 244 Protrusion (rotation stopper) 271 Through hole (second hole) 521 Wood for pillars 522 Joint hardware 712 Hanging through hole (first hole) 713 Through hole for upper and lower connections (second hole)

Claims

1. A method of connecting one residential unit to another residential unit, comprising: The residential unit is provided with a parapet; The parapet includes a parapet body and a coping that covers the parapet body, a horizontal arrangement step of arranging the one residential unit and the other residential unit in a horizontal direction so that their parapets are parallel; and a roof connecting step of attaching a roof connecting member across the fascia of the one residential unit and the fascia of the other residential unit, thereby joining a parapet provided on the one residential unit and a parapet provided on the other residential unit, thereby connecting the one residential unit and the other residential unit, The connecting method is characterized in that the capping is formed in a roughly U-shaped cross section, covering both side surfaces of the parapet body and the top surface of the parapet body.

2. 2. The connection method according to claim 1, By performing the horizontal arrangement step, the sleeve wall provided in the one residential unit and the sleeve wall provided in the other residential unit are arranged to be parallel to each other; A connection method characterized by having, after the horizontal placement step, a wall connection step of attaching a wall connection member across the sleeve wall provided in one of the residential units and the sleeve wall provided in the other residential unit.

3. 3. The connection method according to claim 1 or 2, The parapet includes a fixing member for fixing the coping to the parapet body, and a coping support member fixed to the parapet body, The fixing member is a bolt that can be screwed into the cap board receiving member, The cap board and the roof connecting member are provided with bolt holes into which the fixing members can be inserted, The capping board is fixed to the parapet body via the capping board support member by inserting the fixing member through the bolt hole of the capping board and screwing it into the capping board support member, In the roof connecting step, Remove the fixing member from the parapet; A connecting method characterized by using the fixing member to fix the roof connecting member by inserting the fixing member through the bolt hole of the roof connecting member, passing it through the bolt hole of the fascia, and screwing it into the fascia receiving member.

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