Temporary waterproofing member for the upper surface of a building unit

Abstract

To mainly enable suppression and prevention of entering of rainwater to the inside of a building unit by a screening-plate-shaped waterproof sheet in an end even when a temporary weathering sheet is made small.SOLUTION: An upper surface temporary weathering member 5 of a building unit 3 includes a temporary weathering sheet 12 covering an upper side 11 of a building unit 3. The temporary weathering sheet 12 includes a screening-plate-shaped waterproof sheet 14 suspended to downward and covering the upper part of a side surface 6 of the building unit 3, in an end 13 of the temporary weathering sheet 12. The screening-plate-shaped waterproof sheet 14 may have a lateral width covering the upper part of a side surface 6 of another building unit 3A installed adjacently to the building unit 3. The screening-plate-shaped waterproof sheet 14 may include a string part for fixedly binding. The temporary weathering sheet 12 may include a falling waterproof cover covering a gap between the end and the screening-plate-shaped waterproof sheet 14, in the end 13 attached with the screening-plate-shaped waterproof sheet 14.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a temporary rain shielding member for the upper surface of a building unit.

Background Art

[0002] Some buildings such as residences are constituted by unit buildings. A unit building is a building that can be constructed in a short period of time by transporting prefabricated rectangular parallelepiped building units manufactured in a factory to a construction site and assembling and installing them at the construction site (for example, refer to Patent Document 1).

[0003] In such a building unit, it is necessary to perform temporary rain shielding to prevent rainwater from entering the inside of the building unit during the period from the shipment of the building unit (from the factory or the like to the construction site) to the installation of the unit building at the construction site and the completion of the building.

[0004] For this purpose, in Patent Document 1, for example, during rainfall, the building unit is covered with a waterproof sheet having a size and shape that covers the entire upper surface and side surfaces of the building unit, and the building unit is then shipped.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the above-mentioned Patent Document 1, a waterproof sheet large enough and shaped to cover the entire top and sides of the building unit is placed over the building unit before shipment in case of rainfall. However, since the building unit is a large box-like structure, making the waterproof sheet large enough to cover the entire top and sides of the building unit results in a large waterproof sheet, which increases the time and cost involved in its manufacture. Furthermore, a waterproof sheet of such size and shape is difficult to handle, for example, when attaching or detaching it from the building unit.

[0007] Therefore, there is a desire to make the waterproofing sheet smaller, but if the waterproofing sheet is made smaller, rainwater will be more likely to enter the inside of the building unit.

[0008] Therefore, the main objective of the present invention is to contribute to improving the above-mentioned problems. [Means for solving the problem]

[0009] In response to the above problems, the present invention provides: A waterproof roof panel smaller than the aforementioned top surface is attached to the top surface. Upper part of the building unit An elongated, non-waterproof zone formed along the edge. cover Long and narrow strip Equipped with a temporary rainproofing sheet, The aforementioned temporary waterproofing sheet is, Longitudinal direction end bottom And hanging downwards, the building unit The upper part is perpendicular to the upper part Covering the upper part of the side , the width is greater than the width of the non-waterproof zone. Skirt-type waterproof sheet It is installed It features a temporary waterproofing member for the upper surface of the building unit. [Effects of the Invention]

[0010] According to the present invention, the above configuration allows the temporary rainproofing sheet to , so as to form an elongated strip that covers the elongated non-waterproof zone formed along the upper edge of the building unit. Even when made small, the edges Mounted on the bottom, with a width greater than the width of the non-waterproof zone. A waterproof sheet in the form of a fascia board can suppress or prevent rainwater from entering the interior of the building unit. [Brief explanation of the drawing]

[0011] [Figure 1] This is an overall perspective view of a unit building constituted by building units provided with a top temporary rain shielding member according to the present embodiment. [Figure 2] This is a partial perspective view showing the joint portion between the building unit provided with the top temporary rain shielding member of Fig. 1 and another adjacent building unit. [Figure 3] This is a partially enlarged perspective view of Fig. 2 showing the periphery of the end portion of the temporary rain shielding sheet. [Figure 4] This is a vertical cross-sectional view of the intermediate portion of the temporary rain shielding sheet taken along line A-A in Fig. 2. [Figure 5] This is a partially enlarged perspective view, similar to Fig. 3, of a temporary rain shielding sheet provided with a rising waterproof cover. [Figure 6] This is a partially enlarged perspective view of Fig. 5, viewed from a different direction with a partial enlargement. [Mode for Carrying Out the Invention]

[0012] The present embodiment will be described in detail using Fig. 1 to Fig. 6. [Examples]

[0013] <Configuration> The configuration of this example is as follows.

[0014] For example, a building 1 as shown in Fig. 1 is provided. This building 1 is constituted as a unit building.

[0015] The unit building is a building 1 that can be constructed in a short period of time by transporting prefabricated cuboid-shaped building units 2 and 3, which are manufactured in a factory in advance, to a construction site, and assembling and installing them at the construction site.

[0016] The building units 2 and 3 are unit structures constituting the unit building. The unit building becomes a multi-story building 1 by stacking and installing the building units 3 of the upper floor H on the building units 2 of the lower floor L.

[0017] The arrows in the diagram indicate the X-direction (short side), Y-direction (long side), and Z-direction (up and down) of building units 2 and 3. The X-direction, Y-direction, and Z-direction are three mutually orthogonal directions.

[0018] In the diagram, the unit building consists of building units 2 and 3 arranged side by side in the short-side direction X, so the short-side direction X is the direction of adjacency between building units 2 and 3. However, the direction of adjacency between building units 2 and 3 may also be the long-side direction Y. In this embodiment, we will explain assuming that the direction of adjacency is the short-side direction X.

[0019] In such building units 2 and 3, temporary waterproofing is necessary to prevent rainwater from entering the interior of building units 2 and 3 between the time of shipment of building units 2 and 3 and the time of installation of the unit buildings at the construction site and the completion of building 1.

[0020] To this end, at least during rainfall, the building units 2 and 3 are shipped with the upper temporary rainproofing member 5 attached to their upper surface 4 to protect them from rainwater. The upper temporary rainproofing member 5 is attached to the building units 2 and 3 between the time they are manufactured at the factory and when they are shipped to the construction site.

[0021] As described later, the upper temporary rainproofing member 5 is mainly attached to the building unit 3 of the upper floor H. A different upper temporary rainproofing member, not shown, with a different shape is attached to the building unit 2 of the lower floor L. Note that the upper temporary rainproofing member 5 may be pre-installed on building units 2 and 3 as a rainy weather specification, even when it is not raining.

[0022] The rectangular building units 2 and 3 have four sides 6 and 7 around their perimeter. Sides 6 and 7 are the vertical surfaces that make up the outer perimeter of the rectangular building units 2 and 3. Of these, side 6 is the surface in the short-side direction X of the building units 2 and 3, and side 7 is the surface in the long-side direction Y of the building units 2 and 3.

[0023] Exterior walls 9 and the like are attached to the exterior sides 6 and 7 of building units 2 and 3, and the exterior walls 9 provide proper waterproofing. On the interior sides 6 and 7 of building units 2 and 3, temporary waterproofing members for the sides (not shown) are attached instead of the exterior walls 9.

[0024] The exterior-facing sides 6 and 7 are the sides that are not adjacent to building units 2 and 3. In this embodiment, side 6 is primarily the exterior-facing side. The interior-facing sides 6 and 7 are the sides that are hidden by adjacent building units 2 and 3. In this embodiment, side 7 is primarily the interior-facing side.

[0025] In addition to the above configuration, this embodiment may also have the following configuration.

[0026] (1) As shown in Figure 2, the temporary waterproofing member 5 on the upper surface of the building unit 3 is A temporary waterproofing sheet 12 may be provided to cover the upper edges 10, 11 of the building unit 3. Furthermore, as shown in the enlarged view of Figure 3, the temporary waterproofing sheet 12 may have a fascia-shaped waterproof sheet 14 at its end 13 that hangs downward and covers the upper part of the sides 6 and 7 of the building unit 3.

[0027] Here, the temporary waterproofing member 5 on the top surface of the building unit 3 is a member that covers at least a portion of the top surface 4 of the building unit 3, thereby providing partial temporary waterproofing to the top surface 4 of the building unit 3. Temporary waterproofing refers to temporary waterproofing from the time the building unit 3 is shipped until the building 1 is completed at the construction site. The permanent waterproofing after the completion of the building 1 is carried out separately from the temporary waterproofing.

[0028] In this case, the upper floor H (or top floor) building unit 3 may have a waterproof roof panel 15 pre-installed on its upper surface 4 at the factory, thus creating a building unit 3 with a roof. This allows for the creation of a multi-story unit building with a roof covering most of the structure, simply by stacking the upper floor H building unit 3 on top of the lower floor L building unit 2. The remaining portion of the roof is finished at the construction site after all of the upper floor H building unit 3 have been installed. The lower floor L building unit 2 does not have a roof panel 15 installed on its upper surface 4.

[0029] The temporary waterproofing member 5 on the upper surface of the building unit 3 in this embodiment is mainly attached to the building unit 3 installed on the upper floor H of the unit building, and for example, provides temporary waterproofing for the portion of the upper surface 4 of the building unit 3 on the upper floor H that does not have a roof panel 15.

[0030] Furthermore, the upper temporary rainproofing member 5 may be used to temporarily waterproof areas where a waterproof panel (not shown) or the like, separate from the roof panel 15, is attached to the upper surface 4 of the building units 2 and 3 of the upper floor H or lower floor L for some purpose. Also, as described above, a different upper temporary rainproofing member (not shown) with a different shape from this embodiment is installed on the upper surface 4 of the building unit 2 of the lower floor L.

[0031] The details of the above are as follows:

[0032] The roof panel 15 installed on the upper surface 4 of the building unit 3 of the upper floor H is approximately rectangular in shape when viewed from above. The roof panel 15 is formed to be approximately one size smaller than the approximately rectangular upper surface 4 of the building unit 3, and is installed approximately in the center of the upper surface 4, with its orientation aligned with that of the upper surface 4 of the building unit 3.

[0033] As a result, the central portion of the upper surface 4 of the building unit 3 (upper central portion) becomes a waterproof zone 16 due to the waterproof roof panel 15. The peripheral portion of the upper surface 4 of the building unit 3 that does not have the roof panel 15 (upper peripheral portion) becomes a non-waterproof zone 17. The non-waterproof zone 17 is formed along the upper peripheral portion of the building unit 3, for example, in the shape of a rectangular frame.

[0034] Building unit 3 requires space on the four corners (R) of its top surface 4 to attach lifting devices for hooking the crane's hook, in order to lift it using a crane at a construction site or similar location.

[0035] To this end, the roof panel 15 is formed smaller than the top surface 4 of the building unit 3 so as not to interfere with the lifting equipment and to prevent damage during lifting. When the roof panel 15 is installed on the top surface 4 of the building unit 3, the four corners R of the top surface 4 of the building unit 3 are exposed to the outside. The part of the top surface 4 of the building unit 3 that is exposed to the outside due to the absence of the roof panel 15 becomes a space for attaching the lifting equipment and becomes a non-waterproof zone 17.

[0036] The upper edges 10 and 11 are the linear edges 4a (Figure 4) and their surrounding areas that form the peripheral edge of the rectangular upper surface 4 of the rectangular building unit 3, and there are four of these on the upper surface 4. Of these, upper edge 10 is the area around the edge 4a in the short side direction X of building units 2 and 3. Also, upper edge 11 is the area around the edge 4a in the long side direction Y of building unit 3.

[0037] As described above, when a smaller roof panel 15 is installed in the center of the top surface of the building unit 3, the four upper edges 10 and 11 will essentially all become non-waterproof zones 17. In this case, the temporary top surface waterproofing member 5 is attached to some or all of the upper edges 10 and 11 that become non-waterproof zones 17.

[0038] In this embodiment, at least the side 4a on the interior side where two building units 3 are adjacent, and the surrounding upper edge 11, are assumed to be non-waterproof zones 17. The upper edge 11 on the opposite exterior side is also assumed to be a non-waterproof zone 17. The upper temporary rainproofing member 5 is attached to at least one of the above-mentioned upper edges 11. In this embodiment, the upper temporary rainproofing member 5 is attached to at least the upper edge 11 where the adjacent building unit 3 is located.

[0039] However, depending on the shape of the roof panel 15 and how it is installed on the upper surface 4 of the building unit 3, it is also possible to directly cover some of the upper edges 10 and 11 with the roof panel 15 to create a waterproof zone 16. For example, by extending the roof panel 15 to reach or exceed the length of any of the edges 4a of the upper surface 4, that edge 4a will be covered by the extended portion of the roof panel 15, creating a waterproof zone 16.

[0040] For example, by extending the roof panel 15 in the long side direction Y, the upper part 10 becomes a waterproof zone 16. As a result, the upper part 10 can be fitted with or without the upper temporary rainproofing member 5. Therefore, in this embodiment, the upper part 10 does not have the upper temporary rainproofing member 5 fitted.

[0041] Furthermore, the sides 6 and 7 (side 7 in this embodiment) of the building unit 3 that are below the upper edge 11 at the positions where the building units 3 are adjacent to each other are on the interior side and are hidden from the outside. Also, the sides 6 and 7 (side 6 in this embodiment) of the building unit 3 that are below the upper edge 10 perpendicular to (or adjacent to) the upper edge 11 are on the exterior side and the exterior wall 9 is attached to them.

[0042] The temporary waterproofing sheet 12 is a waterproof resin sheet. The temporary waterproofing sheet 12 is a waterproof sheet that is attached to the upper edges 10, 11 (upper edge 11 in this embodiment) of the building unit 3, which have become a non-waterproof zone 17, to temporarily waterproof the non-waterproof zone 17. As a result, the temporary waterproofing sheet 12 is a small sheet that is installed on a part of the upper surface 4 of the building unit 3.

[0043] As described above, the temporary waterproofing sheet 12 is installed on at least one upper edge 10,11 of the building unit 3 of the upper floor H. The temporary waterproofing sheet 12 is in the shape of an elongated strip with a width and length equal to or greater than the non-waterproof zone 17 of the upper edge 10,11 on which it is installed, so that it can cover the entire area of ​​the non-waterproof zone 17 of the upper edge 10,11 on which it is installed.

[0044] For the sake of simplicity, the following explanation assumes that a temporary waterproofing sheet 12 is installed on the upper edge 11. If the temporary waterproofing sheet 12 is installed on the upper edge 10, the upper edge 11 will be referred to as the upper edge 10, and any other necessary substitutions should be made as appropriate.

[0045] The width of the non-waterproof zone 17 is the distance from the side 4a of the top surface 4 of the building unit 3 to the same side side 15a (Figure 4) of the roof panel 15, and is approximately constant along the entire length of the non-waterproof zone 17. The length of the non-waterproof zone 17 is the same dimension as the side 4a of the top surface 4 of the building unit 3.

[0046] As shown in Figure 4, the temporary waterproofing sheet 12 has one side portion 12a in the width direction fixed from above to the edge portion 15a of the roof panel 15 with fasteners 18 such as screws, and is spread over the upper edge portion 11, thereby covering the entire non-waterproof zone 17 of the upper edge portion 11. In addition to the main body portion that covers the upper edge portion 11, the temporary waterproofing sheet 12 may also have a screw cover 12b that is folded over on one side portion 12a.

[0047] After fixing one side 12a of the temporary waterproofing sheet 12 to the edge 15a of the roof panel 15 with screws (fasteners 18), the screw cover 12b is folded over. The folded screw cover 12b is then placed over the side 12a, covering at least a portion of the side 12a and the main body of the temporary waterproofing sheet 12. In this way, the screw cover 12b protects and waterproofs the screw fixing portion of the side 12a from above. The screw cover 12b can perform its main function as long as it is wide enough to cover the screw fixing portion of the side 12a at a minimum, but the screw cover 12b may be made considerably wider. After folding, the screw cover 12b may be detachably fastened to an appropriate position on the main body of the temporary waterproofing sheet 12 (for example, the end 13) using fasteners or other means of attachment and detachment to prevent it from flapping.

[0048] Preferably, the other side 12c of the temporary waterproofing sheet 12 in the width direction is formed to reach the position of the edge 4a that forms the upper edge 11 on the upper surface 4 of the building unit 3, or to extend beyond the edge 4a. The portion of the other side 12c of the temporary waterproofing sheet 12 that extends beyond the edge 4a on the upper surface 4 of the building unit 3 may be hung over the upper part of the lower side surfaces 6,7 (in this embodiment, this will be side surface 7; hereafter referred to as side surface 7) of the lower side surface 11 of the building unit 3 when the building unit 3 is being transported, for example, to cover the upper part of side surface 7 of the building unit 3.

[0049] As shown in Figure 3, the ends 13 of the temporary waterproofing sheet 12 are the portions located at both ends in the longitudinal direction (the long side direction Y in this embodiment) of the temporary waterproofing sheet 12. The ends 13 reach above the corners R of the upper surface 4 of the building unit 3, or extend beyond the corners R and cover the corners R. The temporary waterproofing sheet 12 may be provided with a string member 13a or the like at the ends 13 for securing the ends 13 of the temporary waterproofing sheet 12 to external scaffolding or the like.

[0050] When it sags downwards, the fascia-shaped waterproof sheet 14 is attached to the end 13 of the temporary waterproofing sheet 12, and the fascia-shaped waterproof sheet 14 sags downwards due to its own weight, so that its surface is oriented vertically.

[0051] Sides 6 and 7 of the building unit 3 (in this embodiment, side 6; hereafter referred to as side 6) are the lower surfaces of another upper edge 10 that is perpendicular (or adjacent) to the upper edge 11 on which the temporary waterproofing sheet 12 is installed. Note that if a fascia-type waterproofing sheet 14 is installed on side 7, side 6 becomes side 7, and other necessary substitutions should be made as appropriate.

[0052] The upper part of side 6 is the non-waterproof zone 17 and its surrounding area, directly below the end 13 of the temporary waterproofing sheet 12 on the lower side of side 6 of the upper edge 10. Since the outer wall 9 is attached to side 6, the upper part of side 6 is the corner portion of the upper edge of the outer wall 9.

[0053] The fascia-shaped waterproof sheet 14 is a fascia-shaped waterproof sheet that extends horizontally along the upper part of the side 6 of the building unit 3, and is installed on the outside of the upper part of the side 6. The fascia-shaped waterproof sheet 14 partially covers the upper part of the side 6 horizontally along the upper edge of the side 6. As a result, the fascia-shaped waterproof sheet 14 is installed on the outside of the exterior wall 9 and covers the corner portion of the upper edge of the exterior wall 9. The fascia-shaped waterproof sheet 14 may be made of the same material as the temporary waterproofing sheet 12.

[0054] The fascia-shaped waterproof sheet 14 is attached to one or both longitudinal ends 13 of the temporary waterproofing sheet 12. The fascia-shaped waterproof sheet 14 may have, for example, leg portions 14a that connect to the ends 13 of the temporary waterproofing sheet 12 and arm portions 14b that extend laterally to cover the upper part of the side surface 6 of the building unit 3.

[0055] The fascia-shaped waterproof sheet 14 may be integrally formed with the end 13 of the temporary waterproofing sheet 12, or it may be formed as a separate component and attached to the end 13 of the temporary waterproofing sheet 12. If the fascia-shaped waterproof sheet 14 is a separate component, the legs 14a of the fascia-shaped waterproof sheet 14 may be attached to the lower surface of the end 13 of the temporary waterproofing sheet 12.

[0056] The leg portion 14a may be fixed to the lower surface of the end portion 13 of the temporary rainproofing sheet 12 by means of integration such as sewing, adhesive or adhesive tape, or it may be attached detachably using means of attachment such as hook-and-loop fasteners or snaps.

[0057] (2) The fascia-shaped waterproof sheet 14 may have a width 21 that covers the upper part of the sides 6, 7 (in this case, side 6) of another building unit 3A installed adjacent to the building unit 3.

[0058] Here, another building unit 3A is a subsequent building unit 3 (successor unit or second building unit) that is installed next to the previously installed building unit 3 (preceding unit or first building unit) on the upper floor H of building 1. Note that when three or more building units 3 are installed side by side, the preceding unit and the successor unit are relative to each other.

[0059] Another building unit 3A (successor unit) has a basic structure almost identical to building unit 3 (preceding unit), and is a rectangular parallelepiped of almost the same size and shape. In the following description, if it is confusing, the successor unit may be indicated with the letter A to distinguish it from the preceding unit.

[0060] The building unit 3 that was installed earlier and another building unit 3A are positioned adjacent to each other with a small gap 22 between their opposing sides 7. The opposing sides 7 face the interior and are hidden inside building 1.

[0061] Between building unit 3 and another adjacent building unit 3A, a gap 22 is formed between their adjacent upper edges 11, 11A. The gap 22 extends in a horizontal direction (in this embodiment, the long side direction Y) perpendicular to the direction of adjacency between building unit 3 and the other building unit 3A (in this embodiment, the short side direction X). It is preferable that the legs 14a of the fascia-shaped waterproof sheet 14 be placed at or around the location of the gap 22 so as to sufficiently cover the portion of the gap 22.

[0062] Then, a temporary waterproofing sheet 12 is installed on at least the upper edge 11 of building unit 3 that is adjacent to another building unit 3A, so as to cover the upper edge 11 from above.

[0063] Furthermore, another building unit 3A has at least one temporary waterproofing sheet 12A (or a second temporary waterproofing sheet) installed on its upper edge 11A adjacent to building unit 3, covering the upper edge 11A from above. The aforementioned upper edge 11A of the other building unit 3A has a shape, structure, and positional relationship that is the opposite of the upper edge 11 of building unit 3. Therefore, the other temporary waterproofing sheet 12A can be used with the same shape and structure as the temporary waterproofing sheet 12, but with the orientation reversed. The other temporary waterproofing sheet 12A is in the shape of a long, narrow strip and extends almost along the upper edge 11A (towards the long side direction Y).

[0064] Furthermore, the other temporary rainproofing sheet 12A may have a slightly different shape and structure from the temporary rainproofing sheet 12. For example, in this embodiment, the temporary rainproofing sheet 12 and the other temporary rainproofing sheet 12A are configured to be connectable and separable at their other sides 12c using a connector 23 such as a fastener. The fastener is attached to the other side 12c of the temporary rainproofing sheet 12 and the other temporary rainproofing sheet 12A so as to extend over almost the entire length of the other side 12c. The fastener may also be attached to a string 23a (Figure 2) so that it can be operated manually remotely from the opposite end 13.

[0065] In this way, by connecting the temporary waterproofing sheet 12 and another temporary waterproofing sheet 12A with a connector 23 and integrating them, the gap 22 between the building unit 3 and another building unit 3A can be effectively waterproofed.

[0066] In this case, the temporary waterproofing sheet 12 and the other temporary waterproofing sheet 12A only need to have enough width to effectively cover the space between building unit 3 and the other building unit 3A when connected. For this purpose, the temporary waterproofing sheet 12 and the other temporary waterproofing sheet 12A are slightly different in shape and structure from each other.

[0067] In other words, by installing fasteners and other connectors 23 at a high position, rainwater is less likely to accumulate around the fasteners, thus making it easier to prevent rainwater from leaking through them. For this reason, the fasteners are installed, for example, in a position close to the roof panel 15 of another building unit 3A.

[0068] Therefore, the temporary waterproofing sheet 12 has a wide width so that its other side 12c reaches a position close to the roof panel 15 of another building unit 3A. Conversely, the other temporary waterproofing sheet 12A has a narrow width so that its other side 12c reaches a position close to the roof panel 15 of another building unit 3A. Furthermore, the screw cover 12b of the other temporary waterproofing sheet 12A is wide enough to extend beyond the position of the zipper, so that it can cover the zipper from above and protect the zipper from rainwater.

[0069] In addition, in the non-waterproof zone 17, an auxiliary waterproof sheet 24 is installed below the temporary waterproof sheet 12 and another temporary waterproof sheet 12A. This auxiliary waterproof sheet 24 is intended to provide temporary waterproofing on its own.

[0070] The auxiliary waterproof sheet 24 has one side fastened together with one side 12a of the temporary waterproofing sheet 12 to the edge 15a of the roof panel 15 using fasteners 18 such as screws, while the other side hangs down over the upper part of the interior side surface 7 that forms the joint gap 22. The other side of the auxiliary waterproof sheet 24 protects the upper part of the interior side surface 7 from rainwater. The auxiliary waterproof sheet 24 can be left in place after the temporary waterproofing is completed and used for the permanent waterproofing. The portion of the auxiliary waterproof sheet 24 that extends beyond the upper edge 11 may be folded back towards the upper edge 10 and sandwiched between the upper edge 10 and the fascia-type waterproof sheet 14.

[0071] The side surface 6A of the other building unit 3A is aligned with the side surface 6 of building unit 3, which is covered by the fascia-like waterproof sheet 14, in the adjacent direction (short side direction X in this embodiment), and is a surface that is almost flush with the side surface 6 of building unit 3. The side surface 6A of the other building unit 3A is installed so as to be aligned with the side surface 6 of building unit 3 with respect to the long side direction Y. The gap 22 between the side surface 6 of building unit 3 and the side surface 6A of the other building unit 3A is sealed by filling the joint portion formed between the opposing side edges of the exterior wall 9 with a gasket or a filler for on-site construction.

[0072] The upper part of side 6A is the non-waterproof zone 17 and its surrounding area, adjacent to side 6 of building unit 3, above side 6A of another building unit 3A. Since the exterior wall 9 is attached to side 6A, the corner portion of the upper edge of the exterior wall 9 becomes the upper part of side 6A. The fascia-type waterproof sheet 14 is installed on the outside of the exterior wall 9 and covers the corner portion of the upper edge of the exterior wall 9 horizontally.

[0073] The width 21 is the lateral (adjacent) dimension of the arm portion 14b of the fascia-shaped waterproof sheet 14. The width 21 of the fascia-shaped waterproof sheet 14 extends at least beyond the non-waterproof zones 17 on both sides. The width 21 of the fascia-shaped waterproof sheet 14 may be such that it approaches or nearly reaches the bracket 25 closest to the joint gap 22 among the multiple brackets 25 provided on the upper part of building unit 3 and another building unit 3A, respectively. The brackets 25 may be such as those that hold downpipes (gutter holding members). Numerous brackets 25 that hold downpipes are installed along the upper part of building unit 3 and another building unit 3A at the required intervals.

[0074] As a result, the fascia-like waterproof sheet 14 has a leg portion 14a and an arm portion 14b with a width of 21 that spans between one building unit 3A and another building unit 3A, forming an almost inverted T shape.

[0075] If the fascia-shaped waterproof sheet 14 does not cover the upper part of the side surface 6A of another building unit 3A, the fascia-shaped waterproof sheet 14 may be L-shaped or I-shaped.

[0076] The fascia-shaped waterproof sheet 14 can be installed on either end 13 of the temporary waterproofing sheet 12 or another temporary waterproofing sheet 12A. In this embodiment, the fascia-shaped waterproof sheet 14 is attached to the end 13 on the side of the wider temporary waterproofing sheet 12.

[0077] Furthermore, the fascia-shaped waterproof sheet 14 can also be attached to another temporary waterproofing sheet 12A. In this case, the fascia-shaped waterproof sheet 14 may be integrally formed and extended to the end 13 of the other temporary waterproofing sheet 12A, or it may be formed as a separate component and attached to the end 13 of the other temporary waterproofing sheet 12A. If it is a separate component, the legs 14a of the fascia-shaped waterproof sheet 14 may be attached to the lower surface of the end 13 of the other temporary waterproofing sheet 12A.

[0078] The leg portion 14a may be fixed to the lower surface of the end portion 13 of another temporary waterproofing sheet 12A by means of integration such as sewing, adhesive or adhesive tape, or it may be attached detachably using means of attachment such as hook-and-loop fasteners or snaps.

[0079] (3) The fascia-shaped waterproof sheet 14 may be equipped with a tie-down cord portion 31.

[0080] Here, the string portion 31 is a long, slender, flexible, cord-like member. The fascia-shaped waterproof sheet 14 has string-through holes 32 at least at both ends (for example, at the upper position) in the width direction of the arm portion 14b. The string portion 31 is tied to the fascia-shaped waterproof sheet 14 by passing it through the string-through holes 32 or a ring-shaped member 33 attached to the string-through holes 32. Protective grommets or the like may be attached to the edges of the string-through holes 32.

[0081] The string portion 31 may have a length sufficient to tie at least both ends of the arm portion 14b of the fascia-shaped waterproof sheet 14 to, for example, the bracket 25.

[0082] The string portion 31 may be tied to other parts of building unit 3 and another building unit 3A, or to external scaffolding, in addition to the bracket 25 that holds the rain gutter.

[0083] Furthermore, the string member 13a at the end 13 of the temporary waterproofing sheet 12 may have the same configuration as the string threading holes 32 and ring-shaped member 33 of the string portion 31.

[0084] (4) As shown in Figure 5, the temporary waterproofing sheet 12 may have a down waterproof cover 42 at the end 13 to which the fascia-shaped waterproof sheet 14 is attached, to cover the gap 41 between the end 13 and the fascia-shaped waterproof sheet 14.

[0085] Here, as shown in Figure 4, the gap 41 is mainly formed in the upper part 11 by the difference in height 43 between the roof panel 15 in the center of the upper surface of the building unit 3 and the upper surface 4 of the building unit 3.

[0086] In other words, since the roof panel 15 has thickness, attaching the roof panel 15 to the center of the upper surface of the building unit 3 creates a height difference 43 equal to the thickness of the roof panel 15 between the center of the upper surface of the building unit 3 and the upper edge 11, which remains at the same height as the upper surface 4. Then, by fixing one side 12a in the width direction of the temporary waterproofing sheet 12 to the raised edge 15a of the roof panel 15, the above height difference 43 also affects the temporary waterproofing sheet 12 that covers the upper edge 11.

[0087] Here, we will briefly explain the roof panel 15. The roof panel 15 has a structure in which a pair of parallel left and right roof frames 44 are connected by a roof underlayment 45, and a waterproof roof finishing material 46 is installed over it. Solar panels 47 or the like may be installed on top of the roof underlayment 45.

[0088] The roof frame 44 is a metal member with an inward-facing C-shape. The inward-facing C-shaped roof frame 44 has a vertical web portion, a horizontal upper flange portion integrally formed at the upper end of the web portion, and a horizontal lower flange portion integrally formed at the lower end of the web portion.

[0089] The edge 15a of the roof panel 15, which forms the boundary between the waterproof zone 16 and the non-waterproof zone 17, is the web of the roof frame 44. The edge 15a of the roof panel 15 to which one side 12a of the temporary waterproofing sheet 12 is attached is the nearly horizontal upper flange of the roof frame 44.

[0090] The roof sheathing material 45 is attached to the roof frame 44 via guide batten members 48. Roof sheathing support beams 49, used to finish the rest of the roof, are attached to the outer surface of the roof frame 44 (the web portion).

[0091] Then, the main body of the temporary rainproofing sheet 12 installed in the non-waterproof zone 17 has one side 12a attached to the roof panel 15, making it the highest point in the width direction, while the other parts are lower, thus covering the non-waterproof zone 17.

[0092] Specifically, the main body of the temporary waterproofing sheet 12 has a nearly horizontal uppermost part 51 where it rests on the upper flange of the roof frame 44 and the roof deck support beam 49 on one side 12a. The main body of the temporary waterproofing sheet 12 has a steeply sloping section 52 that goes downward from the uppermost part 51 and a bottom section 53 that covers the upper edge 11 of the upper surface 4 of the building unit 3, which are formed sequentially toward the other side 12c, creating a stepped shape.

[0093] Furthermore, before being connected with fasteners or other connectors 23, the other side portion 12c hangs over the upper part of the sides 6 and 7 of the building unit 3. Therefore, the temporary waterproofing sheet 12 is formed with a width that takes into account deformation due to the height difference 43. Note that another temporary waterproofing sheet 12A is narrower than the temporary waterproofing sheet 12 and extends to a portion of the steep slope 52.

[0094] Then, by connecting the temporary waterproofing sheet 12 with another temporary waterproofing sheet 12A, which has almost the opposite shape, using a connector 23, a groove-shaped drainage channel is formed. At this time, the other side 12c of the temporary waterproofing sheet 12 is raised from the bottom surface 53 and connected to the other temporary waterproofing sheet 12A so that it becomes the lower part of the steep slope 52 on the opposite side. Rainwater flows down the bottom surface 53 of this groove-shaped drainage channel and is drained from the end 13. The rainwater drained from the end 13 flows down the surface of the outdoor side 6.

[0095] As shown in Figure 6, the downspout waterproof cover 42 is an auxiliary member that seals the gap 41 in the vertical direction Z caused by the height difference 43. The downspout waterproof cover 42 may be integrally formed and extended to the end 13 of the temporary waterproofing sheet 12 or another temporary waterproofing sheet 12A, or it may be formed as a separate member and attached to the end 13 of the temporary waterproofing sheet 12 or another temporary waterproofing sheet 12A.

[0096] When the downspout waterproof cover 42 is formed integrally, the downspout waterproof cover 42 may extend from, for example, the screw cover 12b. The downspout waterproof cover 42 may extend from, for example, the uppermost part 51 or all or part of the steep slope 52 of the main body of the temporary waterproofing sheet 12.

[0097] If the downspout waterproof cover 42 is a separate component, it may be attached to the underside of the end 13 of the temporary rainproofing sheet 12 or another temporary rainproofing sheet 12A. In this case, the mounting position of the downspout waterproof cover 42 may be the screw cover 12b, or all or part of the uppermost part 51 or steep slope 52 of the main body. The downspout waterproof cover 42 may be integrally fixed to the underside of the end 13 of the temporary rainproofing sheet 12 or another temporary rainproofing sheet 12A by, for example, sewing, adhesive or adhesive tape, or it may be attached detachably using hook-and-loop fasteners or snaps.

[0098] Furthermore, the downspout waterproof cover 42 may be formed to a width that can cover the required portion between the side of the leg portion 14a of the fascia-shaped waterproof sheet 14 and the end portion (tip) in the width direction of the arm portion 14b. In this embodiment, the downspout waterproof cover 42 has a width that covers an area from the side of the leg portion 14a to approximately the position of the edge portion 15a of the roof panel 15 (the position of one side portion 12a of the end portion 13 of the temporary waterproof sheet 12 or another temporary waterproof sheet 12A).

[0099] The downspout waterproof cover 42 extends to a length that almost reaches the lower edge of the arm portion 14b of the fascia-shaped waterproof sheet 14, or to a length greater than that, and overlaps the outer surface of the arm portion 14b. The downspout waterproof cover 42 is detachably attached to the lower edge of the arm portion 14b of the fascia-shaped waterproof sheet 14 using fasteners 56 such as hooks, so that it does not get blown up by the wind.

[0100] <Effect> The effect of this embodiment is as follows:

[0101] The upper floor H building unit 3 is manufactured in the factory. During this process, a waterproof roof panel 15 is attached to the center of the upper surface of the upper floor H building unit 3. Then, a temporary waterproofing sheet 12 is attached to the necessary parts of the upper edges 10 and 11 of the building unit 3 (for example, at least the upper edge 11). As a result, the upper surface 4 of the building unit 3 is waterproofed in the center by the roof panel 15, and the upper edges 10 and 11 without the roof panel 15 are temporarily waterproofed by the temporary waterproofing sheet 12.

[0102] Then, at the construction site, the upper floor building unit 3 is installed on top of the lower floor building unit 2 L. The upper floor building unit 3 has a roof panel 15 on its upper surface 4, so the installation of the building unit 3 directly forms most of the roof of the unit building.

[0103] Next, another building unit 3A of the upper floor H is installed next to the building unit 3 of the upper floor H. The other building unit 3A has a roof panel 15 attached to the center of its upper surface, and a temporary waterproofing sheet 12 is attached to at least the upper edge 11A.

[0104] Then, after the installation of another building unit 3A on the upper floor H, the temporary waterproofing sheet 12 of building unit 3 and the other temporary waterproofing sheet 12A of the other building unit 3A are connected and integrated with a zipper. As a result, the gap 22 between the adjacent upper edges 11, 11A of building unit 3 and the other building unit 3A is waterproofed by the connected temporary waterproofing sheet 12 and the other temporary waterproofing sheet 12A.

[0105] Then, a fascia-shaped waterproof sheet 14, which is attached to the end 13 of the temporary waterproofing sheet 12 so as to hang downwards, covers the upper parts of the sides 6, 6A of building unit 3 and another building unit 3A from the outside. In this way, the fascia-shaped waterproof sheet 14 prevents rainwater from entering the interior of building unit 3 and another building unit 3A from the upper parts of the sides 6, 6A of building unit 3 and another building unit 3A.

[0106] The fascia-shaped waterproof sheet 14 is held in a horizontally spread position by being stretched using the securing cord portion 31. The securing cord portion 31 is used to secure the nearest bracket 25, for example, which is installed along the top of building unit 3 and another building unit 3A to hold down the rain gutter.

[0107] Furthermore, the vertical gap 41 formed between the end 13 of the temporary waterproofing sheet 12 and the fascia-shaped waterproof sheet 14 is covered by the vertical waterproofing cover 42. This prevents rainwater from entering through the gap 41.

[0108] <Effects> The effects of this embodiment are as follows:

[0109] (Effect 1) The temporary waterproofing sheet 12 covers the upper edge 11 of the building unit 3, preventing rainwater from entering from the upper edge 11. By making the temporary waterproofing sheet 12 large enough to cover the upper edge 11 of the building unit 3, the temporary waterproofing sheet 12 can be made smaller, and the upper edge 11, which is a non-waterproof zone 17 on the upper surface 4 of the building unit 3, can be protected from rainwater intensively.

[0110] In this case, if the temporary waterproofing sheet 12 is made smaller, there is a risk that some areas will not be adequately covered by the temporary waterproofing sheet 12 alone. Therefore, the temporary waterproofing sheet 12 is equipped with a fascia-shaped waterproof sheet 14 at its end 13. As a result, even if the temporary waterproofing sheet 12 is made smaller, the fascia-shaped waterproof sheet 14 hanging downwards at its end 13 allows the fascia-shaped waterproof sheet 14 to cover areas that the temporary waterproofing sheet 12 alone cannot adequately cover. Furthermore, the fascia-shaped waterproof sheet 14 prevents rainwater from entering the upper part of the side surface 6 of the building unit 3 from the side.

[0111] (Effect 2) The fascia-type waterproof sheet 14 may have a width 21 that covers the upper part of the side 6A of another building unit 3A installed adjacent to the building unit 3. This allows the fascia-type waterproof sheet 14 to cover the upper part of the side 6 of the building unit 3 and the upper part of the side 6A of the adjacent building unit 3A simultaneously with a single sheet. Therefore, the fascia-type waterproof sheet 14 effectively prevents rainwater from entering the upper part of the side 6 of the building unit 3, the upper part of the side 6A of the other building unit 3A, and the space between them.

[0112] (Effect 3) The fascia-shaped waterproof sheet 14 may be equipped with a tie-down cord portion 31. The fascia-shaped waterproof sheet 14 can be easily and securely held in a properly spread-out state by tying the cord portion 31 to, for example, a bracket 25 installed on the upper part of the building unit 3. As a result, the fascia-shaped waterproof sheet 14 can more reliably prevent rainwater from entering the upper part of the sides 6 and 7 of the building unit 3. In addition, by tying the fascia-shaped waterproof sheet 14 with the cord portion 31, the fascia-shaped waterproof sheet 14 can be prevented from being blown up or flapping in the wind during temporary installation (flap prevention).

[0113] (Effect 4) The temporary waterproofing sheet 12 may have a down-type waterproofing cover 42 at the end 13 to which the fascia-type waterproofing sheet 14 is attached. The down-type waterproofing cover 42 covers the gap 41 in the vertical direction Z between the end 13 of the temporary waterproofing sheet 12 and the fascia-type waterproofing sheet 14, thereby preventing rainwater from entering through the gap 41. The down-type waterproofing cover 42 is preferably provided at the end 13 of the temporary waterproofing sheet 12, for example, when there is a part where the shape of the temporary waterproofing sheet 12 changes in the width direction (for example, a stepped part). In this way, the down-type waterproofing cover 42 effectively covers the gap 41 that is created in the part where the shape of the temporary waterproofing sheet 12 changes in the width direction (for example, a stepped part), thereby preventing rainwater from entering through the gap 41. [Explanation of Symbols]

[0114] 3 Building Units 3A Another building unit 5. Temporary waterproofing member for the upper surface 6 Sides 6A side 7 Side view 11 Upper part 11A Upper part 12 Temporary rainproofing sheet 12A Another temporary waterproof sheet 13 End 14. Waterproof sheet in the shape of a decorative panel 21 width 31 Cord part 41 gap 42 Downward Waterproof Cover

Claims

1. A narrow, strip-shaped temporary rainproofing sheet is provided to cover an elongated non-waterproof zone formed along the upper edge of the building unit by attaching a waterproof roof panel smaller than the upper surface to the upper surface, The temporary waterproofing sheet is characterized in that a fascia-shaped waterproofing sheet, which hangs downward and covers the upper part of the side perpendicular to the upper edge of the building unit, is attached to the lower surface of the longitudinal end, and has a width greater than the width of the non-waterproof zone.

2. A temporary rainproofing sheet is provided to cover the upper part of the building unit, The temporary waterproofing sheet has a fascia-shaped waterproof sheet at its end that hangs downward and covers the upper part of the side of the building unit. The temporary waterproofing sheet is a temporary waterproofing member for the upper surface of a building unit, characterized in that it has a down-type waterproof cover at the end to which the fascia-type waterproof sheet is attached, covering the gap between the end and the fascia-type waterproof sheet.

3. A temporary rainproofing member for the upper surface of a building unit according to claim 1 or claim 2, The aforementioned fascia-shaped waterproof sheet is characterized by having a width that covers the upper part of the side of another building unit installed adjacent to the building unit, thus serving as a temporary rainproofing member for the upper surface of a building unit.

4. A temporary rainproofing member for the upper surface of a building unit according to claim 1 or claim 2, The aforementioned fascia-shaped waterproof sheet is a temporary rainproofing member for the upper surface of a building unit, characterized in that it is provided with a tie-down section.

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