Building

Abstract

To provide a building with a simplified mechanism for draining rainwater, etc. from eaves gutters and balconies.SOLUTION: A house H is a multi-story building having a roof 10 and a balcony 40, and comprises: an eaves gutter 16; a cylindrical pillar material 20 which supports the roof 10 and the balcony 40 and has an inner space which communicates with an inside space of the eaves gutter 16; a metal side drain pipe 32 which forms a drainage channel for draining water on a floor of the balcony 40; and a connecting pipe 36 which is connected to the metal side drain pipe 32 and has an inner space which communicates with the drainage channel. A portion of the metal side drain pipe 32 adjacent to the connecting pipe 36 enters an opening 28 formed in an outer peripheral wall of the pillar material 20, and the connecting pipe 36 is inserted into the pillar material 20.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to buildings, and in particular to buildings with roofs, gutters (eaves gutters) and balconies. [Background technology]

[0002] As a configuration for a building with gutters (eaves gutters) installed at the eaves of the roof, it is possible to configure the pillars supporting the roof using tubular materials, and connect these pillars made of tubular materials to the eaves gutters, thereby allowing the pillars to double as downspouts (see, for example, Patent Document 1). With such a configuration, a dedicated downspout is not required, and the mechanism for draining rainwater received by the eaves gutters can be further simplified. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-172848 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, some multi-story buildings have balconies, and such buildings are usually provided with equipment for draining rainwater, etc. from the balcony floor (deck). For such buildings, it is preferable to be able to further simplify the mechanism for draining rainwater, etc. from the eaves gutters and balconies.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned problems, and its object is to provide a building with a simplified mechanism for draining rainwater, etc. from eaves gutters and balconies. [Means for solving the problem]

[0006] The above problem is solved by the building of the present invention, which is a multi-story building having a roof and a balcony on the second floor or higher, comprising a gutter arranged adjacent to the eaves of the roof, a cylindrical pillar material supporting the roof and the balcony and having an internal space communicating with the inner space of the gutter, a drainage pipe forming a drainage channel for draining water on the balcony floor, and a connecting pipe connected to the drainage pipe and having an internal space communicating with the drainage channel, the connecting pipe being inserted into the pillar material, and the part of the drainage pipe adjacent to the connecting pipe extending inside the pillar material through an opening formed in the outer wall of the pillar material. In the above building, the pillars supporting the roof and balcony also serve as downspouts, and the drainage pipes that form the drainage channel from the balcony are connected to the pillars. This simplifies the mechanism for draining rainwater and the like from the eaves gutters and the balcony. In addition, the pillars that also serve as downspouts have openings to connect to the drainage pipes that form the drainage channel from the balcony, and the connecting pipes connected to the drainage pipes are inserted into the pillars, so the strength of the pillars that is reduced by the formation of the openings can be compensated for.

[0007] In addition, the drain pipe and the connecting pipe may be integrated as a connecting metal fitting, and the connecting metal fitting may be fixed at its base portion to the steel material that constitutes the lower end of the balcony. According to the above configuration, the pillar material, which also serves as a downspout, and the drain pipe that serves as a drainage channel from the balcony can be appropriately connected by means of connecting metal fittings.

[0008] In addition, in the connecting hardware, the drain pipe may pass through the base portion, and the portion of the drain pipe adjacent to the base portion on the opposite side to the connecting pipe may be inserted into a through hole formed in the steel web. According to the above configuration, after the connecting metal fittings are appropriately fixed, the pillar material that also serves as a downspout and the drain pipe that forms a drainage channel from the balcony can be connected by the connecting metal fittings.

[0009] In addition, the pillar material may be composed of multiple cylindrical pillar material pieces divided vertically, a lower portion of the connecting pipe may be inserted into a first pillar material piece included in the multiple pillar material pieces, and an upper portion of the connecting pipe may be inserted into a second pillar material piece among the multiple pillar material pieces that is positioned directly above the first pillar material piece. According to the above configuration, the connecting hardware can be more easily attached to the pillar material that also serves as a downspout.

[0010] In addition, the lower portion of the connecting pipe may be inserted inside the first pillar piece and fixed to the first pillar piece by a fixing screw, and the upper portion of the connecting pipe may be inserted inside the second pillar piece and fixed to the second pillar piece by a fixing screw. According to the above configuration, the connecting hardware can be maintained in a good condition while being attached to the pillar material that also serves as a downspout.

[0011] The drain pipe may be a circular pipe. In this case, it is preferable that the opening is formed by vertically lining up a semicircular cutout provided at the upper end of the first pillar piece and a semicircular cutout provided at the lower end of the second pillar piece. In the above configuration, the first and second pillar pieces that constitute the pillars that also serve as downspouts are each provided with a cutout (opening) for connection to a drain pipe that serves as a drainage channel from the balcony. Even with this configuration, the strength of each pillar piece that is reduced by the formation of the cutout can be appropriately compensated for by inserting the connecting pipe.

[0012] In addition, the upper end of the pillar material may be fixed to the eaves side end of the base material of the roof via a fixing metal fitting. In the above-described configuration, the pillar material, which also serves as a downspout, can be fixed to the base material of the roof, thereby restricting horizontal movement of the pillar material. Effect of the Invention

[0013] According to the building of the present invention, the mechanism for draining rainwater and the like from the eaves gutters and balconies can be simplified, thereby improving the appearance of the building. [Brief description of the drawings]

[0014] [Figure 1] 1 is a schematic cross-sectional view showing the overall configuration of a building according to one embodiment of the present invention. [Diagram 2] This is an enlarged cross-sectional view showing the configuration around the eaves gutter. [Diagram 3] 1 is an enlarged cross-sectional view showing the connection between the pillar material and the drainage pipe. FIG. [Figure 4] 2 is a perspective view showing two pillar pieces and a connecting metal fitting that constitute the pillar. FIG. [Diagram 5] FIG. 13 is a cross-sectional view showing an enlarged view of the eaves gutter and its surroundings, illustrating a modified example of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] <<About a building according to one embodiment of the present invention>> Hereinafter, a building according to one embodiment of the present invention (hereinafter, this embodiment) will be described with reference to the accompanying drawings. In the drawings, each component is shown somewhat simplified and schematic to make the explanation easier to understand, and the size (dimension) of each component and the interval between components shown in the drawings are different from the actual ones. Furthermore, the position, orientation, posture, etc. of each component described below refers to the position, orientation, posture, etc. when the component is in use, unless otherwise specified.

[0016] The building according to this embodiment is a multi-storey building having a roof, eaves gutters, and a balcony, specifically a two-storey house H shown in Fig. 1. However, the building of the present invention may be any building that is multi-storey and has a roof, eaves gutters, and a balcony, and may be a building other than a house, for example, a store, building, office, or public or commercial facility. The building may also be a building having three or more floors.

[0017] The roof 10 of the house H is a sloped roof, and has the same structure as the sloped roofs of general houses. To be more specific, the roof 10 is constructed by placing roofing materials such as tiles or panels on sheathing boards 14 supported by rafters 12 as a base material, as shown in Figure 2.

[0018] As shown in FIG. 2, the eaves gutter 16 of the house H is a gutter arranged adjacent to the eaves of the roof 10, extends long in the girder direction, and receives rainwater in its inner space. In this embodiment, the eaves gutter 16 is made of shaped steel such as a channel steel, and is arranged in a state in which the protruding direction of the flange of the shaped steel is along the vertical direction, that is, in a state in which the upper end is open. The eaves gutter 16 made of shaped steel in this way has sufficient strength, so it can be used as a cross member supporting the roof 10 in the structure of the house H, specifically, as an eaves beam. Therefore, in this embodiment, as shown in FIG. 2, the eaves end side end of the rafter 12 is fixed to the eaves gutter 16 via a fixing metal fitting 18 consisting of an angle, a bracket, etc. The fixing method of the rafter 12 to the eaves gutter 16 is not particularly limited, but may be fixed using bolts and nuts, or may be fixed by welding.

[0019] Furthermore, drainage holes 16a, which are through-holes as shown in Fig. 2, are provided at predetermined locations on the web of the shaped steel that constitutes the eaves gutter 16, i.e., the bottom wall of the eaves gutter 16. Rainwater received by the eaves gutter 16 flows down through these drainage holes 16a. A plurality of drainage holes 16a are provided at appropriate intervals on the bottom wall of the eaves gutter 16 in the extension direction (beam direction) of the eaves gutter 16.

[0020] The balcony 40 of the house H is provided on the second or higher floor of the house H, and is a part that protrudes outward from the exterior wall of the house H. In the configuration shown in Fig. 1, the balcony 40 is installed so that the floor of the balcony 40 (hereinafter also referred to as the deck) is located at the same level as the floor of the second floor of the house H. The configuration of the balcony 40 is generally the same as the general configuration of a balcony provided on the second floor of a house.

[0021] The balcony 40 is also provided with a known drainage mechanism. Specifically, a drain groove (not shown) is provided on the top surface of the deck, and a drain outlet (drain) (not shown) is arranged at the end of the drain groove, and a balcony drain pipe 42 made of a PVC pipe or a steel pipe is connected to the drain. The balcony drain pipe 42 forms a flow path for discharging water on the deck that passes through the drain to the outside of the balcony 40.

[0022] In addition, a support structure for supporting the deck is provided at the lower end (the end on the eaves side) of the balcony 40. This support structure is formed by combining a beam extending in the overhanging direction of the balcony 40 (i.e., the beam direction) and a beam extending in the extension direction of the eaves gutter 16 (i.e., the girder direction). Each beam of the support structure is made of steel, for example, a shaped steel such as an H-shaped steel. Here, among the beams that constitute the support structure, the beam located on the most outdoor side in the beam direction corresponds to the second floor girder. A through hole 44b is provided in the web 44a of the steel material (hereinafter also referred to as girder steel material 44) that constitutes the beam that corresponds to the second floor girder, and a part of the balcony drainage pipe 42, more specifically, the metalwork side drainage pipe 32 described later, is inserted into this through hole 44b, as shown in FIG. 4.

[0023] Meanwhile, house H requires independent columns to support roof 10 and balcony 40, and also requires a downspout to drop rainwater received by eaves gutter 16 and direct it to a drainage destination such as drainage pit P. In this embodiment, pillar material 20 is provided to support roof 10 and balcony 40, and this pillar material 20 also serves as a downspout.

[0024] More specifically, the pillar material 20 is made of a tubular member, more specifically, a steel pipe, and extends long in the vertical direction as shown in Fig. 1. In this embodiment, the pillar material 20 is made of a cylindrical pipe, but is not limited thereto, and the pillar material 20 may be made of a square tubular pipe.

[0025] The lower end of the pillar 20 is fixed to the earthen floor K of the house H. The upper end of the pillar 20 is connected to the eaves gutter 16 and fixed to the roof 10 via the eaves gutter 16, more specifically, to the rafters 12 of the roof 10. The middle part of the pillar 20 is fixed to the balcony 40 via a connecting metal fitting 30 described below, more specifically, to the girth steel material 44 provided on the balcony 40. In this way, the pillar 20 supports the roof 10 and the balcony 40, and strictly speaking, resists the vertical loads acting from each of the roof 10 and the balcony 40.

[0026] Furthermore, the pillar material 20 is fixed to the roof 10, the balcony 40, and the earthen floor K, thereby restricting the movement of the pillar material 20 in the horizontal direction. As a result, in this embodiment, the pillar material 20 can properly function as an independent pillar and properly support the roof 10 and the balcony 40. The pillar material 20 is preferably located directly below the eaves gutter 16, and multiple pillar materials 20 are provided at appropriate intervals in the girder direction, which is the extension direction of the eaves gutter 16.

[0027] In this embodiment, the pillar material 20 is connected to the eaves gutter 16 with its internal space communicating with the inner space of the eaves gutter 16. The connection structure between the pillar material 20 and the eaves gutter 16 will be described with reference to Fig. 2. A cylindrical connection sleeve 26 is attached by welding to the portion of the underside of the eaves gutter 16 where the drainage hole 16a is formed. This connection sleeve 26 is made of, for example, a metal steel pipe, and is welded to the eaves gutter 16 so that its inner edge surrounds the drainage hole 16a.

[0028] The outer diameter of the connecting sleeve 26 is slightly smaller than the inner diameter of the pipe that constitutes the pillar 20. As shown in Fig. 2, the connecting sleeve 26 is inserted into and fitted to the upper end of the pillar 20, thereby connecting the pillar 20 to the eaves gutter 16 and communicating the internal space of the pillar 20 with the inner space of the eaves gutter 16 through the drainage hole 16a.

[0029] In addition, a bolt hole is formed in the upper end of the pillar 20, and a bolt hole is formed in the outer peripheral wall of the connecting sleeve 26 at a position corresponding to the bolt hole of the pillar 20. Furthermore, a nut N is fixed by welding to the inner peripheral surface of the connecting sleeve 26, and the hole of this nut N is continuous with the above-mentioned bolt hole.

[0030] The connecting sleeve 26 is inserted into the upper end of the pillar 20 with the bolt holes of the pillar 20 and the connecting sleeve 26 connected to each other. Then, as shown in Fig. 2, a bolt B is inserted into both bolt holes, and the tip of the bolt B is screwed into a nut N in the connecting sleeve 26. This fastens the pillar 20 to the connecting sleeve 26, and the connection state of the pillar 20 to the eaves gutter 16 is stably maintained.

[0031] With the above-described structure, the upper end of the pillar material 20 is connected to the eaves gutter 16. As a result, rainwater received in the eaves gutter 16 flows into the pillar material 20 through the drainage hole 16a and runs down the pillar material 20. That is, in this embodiment, the pillar material 20 can be used as a downpipe to drain the rainwater received in the eaves gutter 16. By using the pillar material 20 as a downpipe in this way, there is no need to provide a separate downpipe, and the configuration for draining the rainwater in the eaves gutter 16 is simplified accordingly. This allows the exterior of the house H to be made simpler and better.

[0032] In this embodiment, the rafters 12 of the roof 10 are fixed to the eaves gutter 16 to which the upper ends of the pillars 20 are connected via fixing hardware 18. That is, the upper ends of the pillars 20 are fixed to the end of the roof 10 on the eaves side via the eaves gutter 16 and the fixing hardware 18. This appropriately restricts horizontal movement of the upper ends of the pillars 20.

[0033] In this embodiment, the balcony drain pipe 42 is connected to the pillar 20 by the connecting metal fitting 30 shown in Fig. 4. This allows water on the deck to flow into the pillar 20, which also serves as a downspout, when it is drained through the balcony drain pipe 42, and to be drained together with the rainwater received in the eaves gutter 16.

[0034] Hereinafter, the configuration of the connecting metal fitting 30 and the connection structure between the pillar material 20 and the balcony drain pipe 42 using the connecting metal fitting 30 will be described with reference to Figs. As shown in FIG. 4, the connecting hardware 30 has a hardware-side drain pipe 32, a base portion 34, and a connecting pipe 36, and these portions are integrated together by welding.

[0035] The metal fitting side drain pipe 32 constitutes a part of the balcony drain pipe 42, that is, it is a drain pipe that forms a drainage channel for draining water on the deck. In this embodiment, the metal fitting side drain pipe 32 is made of a cylindrical steel pipe, for example, a straight circular pipe as shown in FIG.

[0036] The base portion 34 is a portion that fixes the connection hardware 30 to a predetermined location of the house H, and is made of a metal plate that is rectangular in front view. In this embodiment, the base portion 34 is bolted to the web 44a of the girth steel material 44 of the balcony 40 as shown in Fig. 3 . In other words, the connection hardware 30 is fixed to the girth steel material 44 at the base portion 34.

[0037] In addition, a circular hole having the same diameter as the outer diameter of the hardware side drain pipe 32 is formed in the base portion 34, and the hardware side drain pipe 32 is inserted into this circular hole. That is, in the connecting hardware 30, the hardware side drain pipe 32 penetrates the base portion 34. The hardware side drain pipe 32 that penetrates the base portion 34 is fixed to the base portion 34, and more specifically, the outer periphery of the hardware side drain pipe 32 is welded to the edge of the circular hole.

[0038] Furthermore, when the base portion 34 is fixed to the girth steel material 44, as shown in Fig. 3, the upstream portion of the hardware side drain pipe 32 is inserted into the through hole 44b provided in the web 44a of the girth steel material 44. Here, the upstream portion of the hardware side drain pipe 32 refers to the portion of the hardware side drain pipe 32 that is adjacent to the base portion 34 on the opposite side to the connecting pipe 36 (in other words, the portion located closer to the balcony 40).

[0039] The connecting pipe 36 is a straight circular pipe connected to the metal drain pipe 32, and its internal space is connected to the drainage channel formed by the metal drain pipe 32. The connecting pipe 36 is made of a cylindrical steel pipe and is provided in a state where it intersects with the metal drain pipe 32 at the connecting metal 30. More specifically, as shown in FIG. 4, it is perpendicular to the metal drain pipe 32 and forms a T shape together with the metal drain pipe 32. That is, the downstream end of the metal drain pipe 32 (in other words, the part adjacent to the connecting pipe 36) is connected to the center part of the extension direction of the connecting pipe 36. The downstream end of the metal drain pipe 32 is fixed to the center part of the extension direction of the connecting pipe 36, and more specifically, the downstream end of the metal drain pipe 32 is welded in a state where it is butted against the edge of the through hole formed in the center part of the extension direction of the connecting pipe 36.

[0040] 3, the connection pipe 36 is configured so as to be insertable into the pillar material 20. To explain in more detail, the connection pipe 36 has an outer diameter slightly smaller than the inner diameter of the pillar material 20. On the other hand, in this embodiment, the pillar material 20 is divided into two, upper and lower, at a level near the second floor of the house H, as shown in Fig. 3. In other words, the pillar material 20 in this embodiment is composed of multiple (two in the configuration shown in Fig. 3) cylindrical pillar material pieces divided into upper and lower parts. The multiple pillar material pieces include a first pillar material piece 22 and a second pillar material piece 24 adjacent to each other in the vertical direction, and the second pillar material piece 24 is positioned directly above the first pillar material piece 22. Furthermore, the outer diameter and the inner diameter are the same between the first pillar material piece 22 and the second pillar material piece 24.

[0041] 3, the lower part of the connecting pipe 36 is inserted into the first pillar piece 22, and the upper part of the connecting pipe 36 is inserted into the second pillar piece 24. As a result, the connecting pipe 36 is disposed inside the pillar material 20, and the internal space of the pillar material 20 (strictly speaking, the part other than where the connecting pipe 36 is disposed) is in communication with the internal space of the connecting pipe 36.

[0042] On the other hand, as described above, the metal-side drain pipe 32 is connected to the connecting pipe 36 in a state where it intersects with the connecting pipe 36, and when inserting the connecting pipe 36 into the pillar material 20, it is necessary to avoid interference between the metal-side drain pipe 32 and the pillar material 20. For this reason, an opening 28 is provided in the outer peripheral wall of the pillar material 20 as shown in FIG.

[0043] More specifically, as shown in Fig. 4, the upper end of the first pillar piece 22 is provided with a first cutout portion 28a formed by cutting out the upper end surface of the first pillar piece 22 in a semicircular shape. Similarly, the lower end of the second pillar piece 24 is provided with a second cutout portion 28b formed by cutting out the lower end surface of the second pillar piece 24 in a semicircular shape. The first cutout portion 28a and the second cutout portion 28b are both semicircular cutout portions, and are arranged vertically to form an opening 28 in the shape of a substantially circular hole. The diameter of this opening 28 is the same as or slightly larger than the outer diameter of the metal fitting side drain pipe 32.

[0044] The opening 28 is provided with a portion of the metal drain pipe 32 adjacent to the connecting pipe 36, i.e., the downstream end of the metal drain pipe 32. Specifically, as can be seen from FIG. 4, the lower half of the outer periphery of the metal drain pipe 32 fits into the first cutout 28a, and the upper half fits into the second cutout 28b. In this way, the downstream end of the metal drain pipe 32 enters the opening 28, and the connecting pipe 36 is inserted into the column material 20. With this configuration, the drain pipe laid to drain water from the deck of the balcony 40 is connected to the column material 20 as a downpipe.

[0045] In addition, in this embodiment, the connecting pipes 36 inserted into the first pillar piece 22 and the second pillar piece 24 are fixed to the first pillar piece 22 and the second pillar piece 24 by bolts (an example of fixing screws).

[0046] More specifically, as shown in FIG. 4, a bolt hole 38a is formed at the lower end of the connecting pipe 36, and a bolt hole 22a is formed at the upper end of the first column piece 22 at a position corresponding to the bolt hole 38a at the lower end of the connecting pipe 36. A nut (not shown) is fixed to the inner peripheral surface of the connecting pipe 36 by welding, and the hole of this nut is continuous with the bolt hole 38a. The lower end of the connecting pipe 36 is inserted into the upper end of the first column piece 22 with the bolt hole 22a of the first column piece 22 and the bolt hole 38a of the connecting pipe 36 connected to each other. Then, a bolt is inserted into both bolt holes, and the tip of the bolt is screwed into the nut in the connecting pipe 36. As a result, the lower part of the connecting pipe 36 is bolted to the first column piece 22 while being inserted inside the first column piece 22.

[0047] Similarly, as shown in FIG. 4, a bolt hole 38b is formed at the upper end of the connecting pipe 36, and a bolt hole 24a is formed at the lower end of the second column piece 24 at a position corresponding to the bolt hole 38b at the upper end of the connecting pipe 36. A nut (not shown) is fixed to the inner peripheral surface of the connecting pipe 36 by welding, and the hole of this nut is continuous with the bolt hole 38b. The upper end of the connecting pipe 36 is inserted into the lower end of the second column piece 24 with the bolt hole 24a of the second column piece 24 and the bolt hole 38b of the connecting pipe 36 connected to each other. Then, a bolt is inserted into both bolt holes, and the tip of the bolt is screwed into the nut in the connecting pipe 36. As a result, the upper part of the connecting pipe 36 is bolted to the second column piece 24 while being inserted inside the second column piece 24.

[0048] With the above configuration, in this embodiment, the pillar material 20 can be used as a downspout, and rainwater and the like received in the eaves gutter 16 can be drained through the pillar material 20. Also, in this embodiment, by using the connecting metal fittings 30, water on the deck of the balcony 40 can also be drained through drain pipes (more specifically, the metal fitting side drain pipe 32 and the balcony drain pipe 42) into the pillar material 20 as a downspout and discharged. This further simplifies the mechanism for draining rainwater and the like from the eaves gutter 16 and the balcony 40, resulting in an even better appearance of the house H.

[0049] Furthermore, the pillar 20, which also serves as a downspout, has an opening 28 for connection to a drainage pipe that forms a drainage channel from the balcony 40, and the opening 28 reduces the strength of the pillar 20 as an independent pillar. On the other hand, a connecting pipe 36 made of a steel pipe is inserted into the pillar 20, which compensates for (reinforces) the strength of the pillar 20 that is reduced by the formation of the opening 28.

[0050] <<Other embodiments>> Although one embodiment of the building of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit of the present invention. In addition, the present invention naturally includes its equivalents.

[0051] The present invention may be embodied in other ways than those described above. For example, in the above embodiment, the eaves gutter 16 is made of steel such as shaped steel and supports the roof 10 as an eaves beam, but the present invention is not limited to this. The eaves gutter 16 may be a resin molded product like a general eaves gutter. In this case, as shown in FIG. 5, the eaves gutter 16 may be supported at a position adjacent to the eaves end of the rafter 12 of the roof 10 using an L-shaped fixing metal fitting 50. Specifically, one side of the L-shaped fixing metal 50 is fixed to the end of the rafter 12 on the eaves side by a bolt or the like. In this case, the rafter 12 is preferably made of a material having sufficient strength, such as CLT (Cross Laminated Timber). In addition, the eaves gutter 16 is placed on the other side of the fixing metal 50 as shown in FIG. 5, and a communication hole 50a is provided in the part overlapping with the drainage hole 16a provided in the eaves gutter 16. Furthermore, a cylindrical connecting sleeve 52 is attached by welding to the part of the lower surface of the other side of the fixing metal 50 where the communication hole 50a is provided. This connecting sleeve 52 has the same function as the connecting sleeve 26 of the above-mentioned embodiment.

[0052] In addition, in the above embodiment, the pillar material 20 that functions as a downspout and the connecting pipe 36 inserted into the pillar material 20 are each circular pipes, but this is not limited to this, and each of the pillar material 20 and the connecting pipe 36 may be a square pipe (square pipe).

[0053] Furthermore, in the above embodiment, the balcony 40 is provided on the second floor of a building (more specifically, house H), but this is not limited to this, and for example, in a three-story building, a balcony may be provided on the third floor or higher. [Explanation of symbols]

[0054] 10. Roof 12 Rafters 14 Field board 16. Eaves gutter (gutter) 16a Drain hole 18 Fixing hardware 20 Pillar material 22 1st pillar piece 22a Bolt hole 24 2nd pillar piece 24a Bolt hole 26 Connecting sleeve 28 Opening 28a First notch 28b Second cutout 30 Connection hardware 32 Metal fitting drain pipe (drain pipe) 34 Base 36 Connecting pipe 38a, 38b bolt holes 40 Balcony 42 Balcony drain pipe 44 Steel material for barrel difference (steel material) 44a Web 44b Through hole 50 Fixtures 50a communication hole 52 Connecting sleeve B Bolt H Residential (building) K. Earthen floor N Nut P Drainage pit

Claims

1. A multi-story building having a roof and balconies on the second or higher floors, A gutter disposed adjacent to the eaves of the roof; A cylindrical pillar member supporting the roof and the balcony and having an internal space communicating with the inner space of the gutter; A drain pipe forming a drainage channel for draining water on the balcony floor; a connecting pipe connected to the drain pipe and having an internal space communicating with the drainage channel; A building, wherein a portion of the drainage pipe adjacent to the connecting pipe enters an opening formed in the outer wall of the pillar material, and the connecting pipe is inserted into the pillar material.

2. The drain pipe and the connecting pipe are integrated as a connecting metal fitting, The building according to claim 1 , wherein the connecting hardware is fixed at a base portion thereof to a steel material constituting a lower end portion of the balcony.

3. In the connecting hardware, the drain pipe passes through the base portion, The building according to claim 2 , wherein a portion of the drainage pipe adjacent to the base portion on the opposite side to the connecting pipe is inserted into a through hole formed in the steel web.

4. The pillar material is composed of a plurality of cylindrical pillar material pieces divided into upper and lower parts, A lower portion of the connection pipe is inserted into a first pillar piece included in the plurality of pillar pieces, The building described in claim 1, wherein an upper portion of the connecting pipe is inserted inside a second pillar piece among the multiple pillar pieces, the second pillar piece being located directly above the first pillar piece.

5. The lower portion of the connection pipe is inserted into the first pillar piece and fixed to the first pillar piece by a fixing screw, The building according to claim 4 , wherein the upper portion of the connecting pipe is inserted inside the second pillar piece and fixed to the second pillar piece by a fixing screw.

6. The drain pipe is a circular pipe, The building described in claim 4 or 5, wherein the opening is formed by a semicircular cutout portion provided at the upper end of the first pillar piece and a semicircular cutout portion provided at the lower end of the second pillar piece, arranged vertically.

7. 2. The building according to claim 1, wherein the upper end of the pillar is fixed to the eaves side end of the base material of the roof via a fixing metal fitting.

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