Water drainage component, building, and building construction method

Abstract

To provide a water drainage member, a building, and a method for constructing a building, which can improve workability at the connection portion between an exterior wall connection structure and an exterior wall in a building.SOLUTION: A water drainage member 30 is disposed at the connection portion between the exterior wall of the building and the main body portion of the exterior wall connection structure connected to the exterior wall. The water drainage member 30 has a first surface portion 31 that covers the upper surface of the main body portion, and an exterior wall constituent portion 40 that constitutes part of the exterior wall. The exterior wall constituent portion 40 is configured to protrude upward from an exterior wall side end portion 31a of the first surface portion 31 when the water drainage member 30 is disposed on the main body portion, and has a sealing receiving surface 46 that receives a sealing material used for the exterior wall.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a drainage member, a building, and a construction method for a building. [Background technology]

[0002] There are known buildings that include exterior wall connection structures that are connected to exterior walls. An example of an exterior wall connection structure is a loggia wall or loggia beam. The loggia wall and the loggia beam are connected to the exterior wall of the building. Another example of an exterior wall connection structure is a rising wall of a veranda or balcony. The rising wall is connected to the exterior wall of the building. In such buildings, a water drainage member is disposed at the connection portion between the exterior wall and the exterior wall connection structure. For example, in Patent Document 1, an exterior wall joint part for balcony coping rainproofing is disposed at the connection portion between the balcony coping and the exterior wall. In Patent Document 2, a first waterproofing material is installed at the boundary portion between the balcony wall and the first wall surface of the building. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 4-114902 [Patent Document 2] JP 2004-239022 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a connection portion between an exterior wall of a building and an exterior wall connection structure, construction of the connection portion may be time-consuming due to the fit between the water-repelling member and the exterior wall member of the exterior wall. It is desirable to be able to improve the ease of construction of the connection portion between the exterior wall and the exterior wall connection structure in a building. [Means for solving the problem]

[0005] (1) A water drainage member that solves the above-mentioned problems is a water drainage member that is placed at the connection between the exterior wall of a building and a main body of an exterior wall connection structure that is connected to the exterior wall, and has a first surface portion that covers the upper surface of the main body portion and an exterior wall component portion that forms part of the exterior wall, and the exterior wall component portion is configured to protrude upward from the exterior wall side end portion of the first surface portion when the water drainage member is arranged on the main body portion, and has a sealing receiving surface that receives a sealing material used on the exterior wall.

[0006] According to this configuration, since the exterior wall constituent part is provided on the exterior wall side end part of the first surface part, by placing the water drainage member on the main body part of the exterior wall connection structure, the exterior wall constituent part can constitute part of the exterior wall. Since the exterior wall constituent part constitutes part of the exterior wall, it is possible to improve the workability of the connection part between the exterior wall and the exterior wall connection structure.

[0007] (2) In the water drainage member described in (1) above, the exterior wall constituent part has an exterior wall constituent member made of at least one of a ceramic material, concrete, and metal.

[0008] According to this configuration, at least one of the ceramic material, the concrete, and the metal can suppress a decrease in fire resistance of the exterior wall at the connection portion.

[0009] (3) In the water-draining member described in (2) above, the exterior wall constituent part has a support part that supports the exterior wall constituent member, and the support part has a support main body part connected to the exterior wall side end part of the first surface part, a first support side part connected to one of both end parts of the support main body part in the width direction of the main body part in the arranged state, and a second support side part connected to the other of both end parts of the support main body part in the width direction, and the support main body part, the first support side part, and the second support side part form a storage space in which the exterior wall constituent member is accommodated.

[0010] According to this configuration, since the exterior wall constituent members are accommodated in the accommodation space, the exterior wall constituent members are unlikely to be exposed to the environment such as sunlight, outside air, etc. Therefore, the condition of the exterior wall constituent members can be maintained in a favorable manner.

[0011] (4) In the water drainage member described in any one of (1) to (3) above, the water drainage member further has a sealing blocking portion that blocks the sealing material, and the sealing receiving surface has a first sealing receiving surface extending horizontally on an upper surface of the exterior wall component and a second sealing receiving surface extending vertically on a side surface of the exterior wall component, and the sealing blocking portion is provided on the second sealing receiving surface.

[0012] According to this configuration, the sealing material flowing downward along the second sealing receiving surface can be blocked.

[0013] (5) A building that solves the above problem is a building having an outdoor area, comprising a building main body and an outdoor part that constitutes the outdoor area, the outdoor part having an exterior wall connection structure connected to the exterior wall of the building main body, the exterior wall connection structure comprising a main body, a water drainage member arranged on the main body, and a coping arranged on the water drainage member, the water drainage member having a first surface portion covering an upper surface of the main body and an exterior wall component that constitutes part of the exterior wall, and the exterior wall component is arranged on the main body so as to overlap horizontally with the exterior wall member of the exterior wall, and a sealant is filled between the exterior wall member and the exterior wall component.

[0014] According to this configuration, when the water drainage member is placed on the main body, the exterior wall component overlaps the exterior wall member of the exterior wall in the horizontal direction, making it easy to fill the gap between the exterior wall component and the exterior wall member. Since sealing can be suitably performed at the connection portion between the exterior wall and the exterior wall connection structure, the construction period of the building can be shortened.

[0015] (6) In the building described in (5) above, the exterior wall of the building body is provided with a window having a sash, the exterior wall connection structure is connected under the sash in the exterior wall, and the exterior wall component of the water drainage member is positioned between the main body of the exterior wall connection structure and the sash.

[0016] According to this configuration, the exterior wall constituent part is provided between the main body part of the exterior wall connection structure and the sash, which improves the fire resistance and waterproofing of the exterior wall compared to a case where the exterior wall constituent part is not provided between the main body part of the exterior wall connection structure and the sash.

[0017] (7) In the building described in (5) or (6) above, the water drainage member further has a sealing blocking portion that blocks the sealing material, and the sealing blocking portion is positioned in a compressed state between a side surface of the exterior wall member and a side surface of the exterior wall component.

[0018] According to this configuration, the sealing blocking portion can be in close contact with the exterior wall member and the exterior wall constituent portion, so that the sealing material flowing downward can be effectively blocked between the exterior wall member and the exterior wall constituent portion.

[0019] (8) A construction method for a building that solves the above-mentioned problems is a construction method for a building that has an outdoor section having an exterior wall connection structure connected to the exterior wall of the building main body, and includes a first step of placing a water drainage member on a main body portion of the exterior wall connection structure, and a second step of placing a coping on top of the water drainage member, wherein the water drainage member has a first surface portion covering an upper surface of the main body portion and an exterior wall component portion that constitutes part of the exterior wall, and in the first step, the water drainage member is placed on the main body portion so that the exterior wall component portion horizontally overlaps with the exterior wall member of the exterior wall, and a sealant is filled between the exterior wall member and the exterior wall component portion.

[0020] According to this configuration, the drainage member is placed on the main body of the exterior wall connection structure, and then a sealant is filled between the exterior wall member and the exterior wall component, thereby forming the portion of the exterior wall that is located above the main body of the exterior wall connection structure. In this way, the efficiency of construction at the connection portion between the exterior wall connection structure and the exterior wall can be improved. Effect of the Invention

[0021] The water-repellent member, building, and building construction method disclosed herein can improve the workability of the connection portion between the exterior wall connection structure and the exterior wall in a building. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a diagram showing a building according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of a drainage member according to an embodiment. [Diagram 3] 1 is a side view of a connection portion where the exterior wall connection structure and the exterior wall are connected. FIG. [Figure 4] 1 is a plan view of a connection portion where an exterior wall connection structure and an exterior wall are connected. FIG. [Diagram 5] 1 is a front view of a connection portion where the exterior wall connection structure and the exterior wall are connected. FIG. [Figure 6] 6 is a diagram showing a part of a process in a construction method for a building at the connection portion of FIG. 5. FIG. [Figure 7] FIG. 11 is a perspective view of a drainage member according to a first modified example. [Figure 8] FIG. 11 is a plan view of a connection portion where an exterior wall connection structure according to a first modified example is connected to an exterior wall. [Figure 9] FIG. 11 is a perspective view of a drainage member according to a second modified example. [Figure 10] FIG. 11 is a plan view of a connection portion where an exterior wall connection structure according to a second modified example is connected to an exterior wall. [Figure 11] FIG. 13 is a perspective view of a drainage member according to a third modified example. [Figure 12] FIG. 13 is a plan view of a connection portion where an exterior wall connection structure according to a third modified example is connected to an exterior wall. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] <Embodiment> The building 10, the drainage member 30, and the construction method for the building 10 according to this embodiment will be described with reference to Figs.

[0024] <Buildings> As shown in Fig. 1, an example of the building 10 is a single-family home. Other examples of the building 10 include a single-family home, an apartment building, a commercial facility, and a public facility. The building 10 has an outdoor area 10A. In this embodiment, the outdoor area 10A is configured as a loggia.

[0025] As shown in Fig. 1, a building 10 includes a building body 11 and an outdoor portion 12. The building body 11 has a room for living or working. The building body 11 has an exterior wall 13 that separates the interior and exterior of the building 10. The outdoor portion 12 constitutes an outdoor area 10A.

[0026] As shown in Fig. 3, the exterior wall 13 has an exterior wall main body 14 and an exterior wall member 15 that covers an outer surface 14a of the exterior wall main body 14. The exterior wall main body 14 is formed, for example, by attaching a base material 17 to a pillar 16. The exterior wall member 15 is, for example, an exterior wall material. The exterior wall member 15 is, for example, a plate-shaped concrete panel. As the exterior wall member 15, a plate material other than concrete, such as a synthetic resin molding or a metal panel, may be used. A gap is provided between the exterior wall main body 14 and the exterior wall member 15 for ventilation.

[0027] 1, the exterior wall 13 of the building body 11 is provided with a window 18. One or more windows 18 are configured in the exterior wall 13. The window 18 has a sash 19.

[0028] As shown in Fig. 1, the outdoor section 12 has an exterior wall connection structure 20. The exterior wall connection structure 20 is connected to the exterior wall 13 of the building body 11. The exterior wall connection structure 20 is configured as a loggia beam hung on a loggia. The loggia is defined by the exterior wall 13 and a loggia wall 13A connected to the exterior wall 13. The exterior wall connection structure 20 is hung between the exterior wall 13 and the loggia wall 13A. The exterior wall connection structure 20 may be configured as a loggia wall.

[0029] 1 and 3, in this embodiment, the exterior wall connection structure 20 is connected below the sash 19 in the exterior wall 13. The exterior wall connection structure 20 is connected below two adjacent sashes 19 in the exterior wall 13.

[0030] As shown in Fig. 3, the exterior wall connection structure 20 includes a main body 21, a water drainage member 30, and a cap board 22. In Fig. 3, the cap board 22 is indicated by a dashed line. In Fig. 3, a wall material 24 and a sealing material 25, which will be described later, are omitted.

[0031] 3 and 5, the main body 21 of the exterior wall connection structure 20 is composed of an exterior wall connection body 23 and a wall material 24. The exterior wall connection body 23 has a beam material arranged along the extension direction (hereinafter, "extension direction D1") of the main body 21. A base material is attached to the beam material.

[0032] The wall material 24 is an exterior wall material of the exterior wall connection structure 20. Preferably, the wall material 24 is made of the same material as the exterior wall member 15. The wall material 24 is attached to the exterior wall connection body 23 using mounting brackets, bolts, nuts, etc. so as to cover the exterior wall connection body 23. The wall material 24 is attached to the base material of the exterior wall connection body 23 via furring strips. A gap for ventilation is provided between the exterior wall connection body 23 and the wall material 24.

[0033] The capping 22 constitutes the upper end portion of the exterior wall connection structure 20. The capping 22 is disposed on the main body portion 21 so as to cover the upper end of the main body portion 21 of the exterior wall connection structure 20. Specifically, the capping 22 is disposed on the water drainage member 30.

[0034] <Drainage parts> As shown in Fig. 3, the water drainage member 30 functions as a drain in the exterior wall connection structure 20. The water drainage member 30 is disposed on the main body 21 of the exterior wall connection structure 20. The water drainage member 30 is disposed at the connection portion CP1 between the exterior wall 13 and the main body 21. The water drainage member 30 is configured to suppress water from flowing into the inside of the exterior wall member 15. The water drainage member 30 has a first surface portion 31 and an exterior wall constituent portion 40.

[0035] <First side> 2 and 5, the first surface portion 31 is disposed on the upper surface 21a of the main body portion 21. The first surface portion 31 covers the upper surface 21a of the main body portion 21. The first surface portion 31 is provided with a hole 32 that connects to the gap between the exterior wall connection body 23 and the wall material 24 when the drainage member 30 is disposed on the main body portion 21 (hereinafter referred to as the "disposed state").

[0036] As shown in FIG. 2 and FIG. 3, the water drainage member 30 has a water stopper 33. The water stopper 33 is disposed on the first surface portion 31. The water stopper 33 is disposed so as to extend from one end of the first surface portion 31 to the other end in the width direction D2 of the main body portion 21 in the disposed state. The water stopper 33 is provided at a position spaced a predetermined distance outward from the exterior wall constituent portion 40. The water stopper 33 blocks water flowing along the exterior wall member 15 and the exterior wall constituent portion 40 so as not to flow outside the water stopper 33, thereby guiding the water to the end of the first surface portion 31 in the width direction D2. As a result, the water is discharged downward along the side surface of the exterior wall connection structure 20. The water stopper 33 is, for example, made of a sponge material. In FIG. 5, the water stopper 33 is indicated by a dashed line.

[0037] 2, the drainage member 30 further has a second surface portion 34 and a third surface portion 35. The first surface portion 31, the second surface portion 34, and the third surface portion 35 are formed by bending a single metal plate. In the arranged state, the second surface portion 34 extends downward from one of both ends of the first surface portion 31 in the width direction D2. In the arranged state, the third surface portion 35 extends downward from the other of both ends of the first surface portion 31 in the width direction D2.

[0038] 2 and 5, on the underside of the first surface portion 31, a cushioning member 36 is provided at each of the connection portion between the first surface portion 31 and the second surface portion 34 and the connection portion between the first surface portion 31 and the third surface portion 35. In the arranged state, the cushioning member 36 contacts the upper end of the wall material 24. The cushioning member 36 is made of, for example, a sponge material.

[0039] <Outer wall components> 2 and 3, the outer wall constituent part 40 is configured to protrude upward from the outer wall side end part 31a of the first surface part 31 in the arranged state. The outer wall side end part 31a is an end part that is located toward the outer wall 13 among the ends of the first surface part 31 in the extension direction D1 in the arranged state. The outer wall constituent part 40 extends in the width direction D2 in a plan view. The outer wall constituent part 40 constitutes a part of the outer wall 13.

[0040] As shown in Fig. 4, the water drainage member 30 is disposed on the main body 21 so that the exterior wall constituent part 40 overlaps horizontally with the exterior wall member 15 of the exterior wall 13. The water drainage member 30 of this embodiment is disposed so that the outer surface 40a of the exterior wall constituent part 40 is flush with the outer surface 15a of the exterior wall member 15 in a plan view. Note that the coping 22 is indicated by a dashed line in Fig. 4. A gap is provided between the exterior wall constituent part 40 and the exterior wall main body 14.

[0041] 5, in front view, the exterior wall constituent part 40 is disposed between the main body part 21 of the exterior wall connection structure 20 and the sash 19. A sealant 25 is filled between the sash 19 and the exterior wall constituent part 40. In front view, the exterior wall constituent part 40 is disposed between two exterior wall members 15. A sealant 25 is filled between the exterior wall members 15 and the exterior wall constituent part 40.

[0042] <Exterior wall components> As shown in FIG. 2, the exterior wall constituent part 40 has an exterior wall constituent member 41. The exterior wall constituent member 41 is made of a fire-resistant material. The exterior wall constituent member 41 is made of at least one of a ceramic material, concrete, and metal. An example of a metal constituting the exterior wall constituent member 41 is a fire-resistant metal. The exterior wall constituent member 41 of this embodiment is made of, for example, Moen Siding (registered trademark). The exterior wall constituent member 41 may be made of the same material as the exterior wall member 15.

[0043] The exterior wall constituent member 41 is accommodated in the accommodation space HS. The accommodation space HS is provided in the exterior wall constituent part 40. The exterior wall constituent member 41 is attached to a support part 42 that constitutes the accommodation space HS by means of adhesive, screws, bolts, or the like.

[0044] <Support part> 2, the exterior wall constituent portion 40 further has a support portion 42. The support portion 42 supports the exterior wall constituent member 41. The support portion 42 forms the storage space HS. The support portion 42 has a support main body portion 43, a first support side portion 44, and a second support side portion 45.

[0045] The support main body 43 is connected to the outer wall side end 31a of the first surface portion 31. The support main body 43 is formed of a metal plate that is connected to the metal plate that constitutes the first surface portion 31. The metal plate that constitutes the support main body 43 may be configured to be connected to the outer wall side end 31a of the first surface portion 31 by bending a single metal plate. In the arranged state, the support main body 43 is formed of a first portion that extends upward from the outer wall side end 31a of the first surface portion 31, and a second portion that extends from the first portion in the extension direction D1.

[0046] The first support side portion 44 is connected to one of both ends of the support body portion 43 in the width direction D2 of the body portion 21 of the exterior wall connection structure 20. The second support side portion 45 is connected to the other of both ends of the support body portion 43 in the width direction D2. The first support side portion 44 and the second support side portion 45 of this embodiment are formed of metal plates connected to the metal plate constituting the support body portion 43. The metal plates constituting the first support side portion 44 and the second support side portion 45 may be configured to be connected to the metal plate constituting the support body portion 43 by welding. The first support side portion 44 and the second support side portion 45 are configured to extend below the first surface portion 31.

[0047] The support body 43, the first support side 44, and the second support side 45 form the storage space HS. In this embodiment, the support body 43, the first support side 44, and the second support side 45 form a storage box configured to surround at least a portion of the storage space HS. In this embodiment, the storage box may open toward the outer wall body 14 in the extension direction D1. Also, the storage box may open downward.

[0048] <Sealing surface> As shown in Fig. 6, the exterior wall constituent part 40 has a sealing receiving surface 46. The sealing receiving surface 46 receives the sealing material 25 used in the exterior wall 13. Note that Fig. 6 shows the exterior wall connection structure 20 before the coping 22 is arranged. Also, the water stop part 33 of the water flashing member 30 is indicated by a dashed line.

[0049] 2 and 6, the sealing receiving surface 46 has a first sealing receiving surface 47 and a second sealing receiving surface 48. The first sealing receiving surface 47 extends horizontally on the upper surface of the exterior wall configuring portion 40. The upper surface of the exterior wall configuring portion 40 corresponds to the second portion of the support main body portion 43. The first sealing receiving surface 47 is configured on the upper surface of the support portion 42. The first sealing receiving surface 47 faces the sash 19 before the sealant 25 is filled.

[0050] The second sealing receiving surface 48 extends in the vertical direction on the side surface 40b of the exterior wall constituent part 40. The side surface 40b of the exterior wall constituent part 40 corresponds to the first support side part 44 and the second support side part 45. The second sealing receiving surface 48 is formed on the side surface of the support part 42. The second sealing receiving surface 48 faces the exterior wall member 15 before the sealant 25 is filled.

[0051] <Sealing blockage> 6, the water drainage member 30 further includes a sealing blocking portion 49. The sealing blocking portion 49 blocks the sealant 25. The sealing blocking portion 49 is disposed between the side surface 15b of the outer wall member 15 and the side surface 40b of the outer wall constituent portion 40 in a compressed state.

[0052] 2, the sealing stop portion 49 is provided on the second sealing receiving surface 48. The sealing stop portion 49 is made of, for example, a sponge material. The sealing stop portion 49 is located below the first surface portion 31.

[0053] <Building construction method> 4 to 6, a construction method for the building 10 having the outdoor portion 12 will be described. The construction method for the building 10 includes a first step and a second step.

[0054] Prior to the first step, the body portion 21 of the exterior wall connection structure 20 is constructed so as to be connected to the exterior wall body portion 14 of the exterior wall 13 of the building body 11. In this embodiment, the exterior wall connection structure 20 is connected below the sash 19 in the exterior wall 13. The exterior wall member 15 of the exterior wall 13 is placed on the exterior wall body portion 14 before the water flashing member 30 is placed on the body portion 21 of the exterior wall connection structure 20. A part of the exterior wall member 15 of the exterior wall 13 may be placed on the exterior wall body portion 14 after the water flashing member 30 is placed on the body portion 21 of the exterior wall connection structure 20.

[0055] 6, in the first step, the water drainage member 30 is placed on the main body 21 of the exterior wall connection structure 20. At this time, the water drainage member 30 is placed so that the sealing stopper portion 49 is compressed between the side surface 15b of the exterior wall member 15 and the side surface 40b of the exterior wall constituent portion 40.

[0056] 4, in the first step, the drainage member 30 is placed on the main body 21 so that the exterior wall constituent part 40 overlaps horizontally with the exterior wall member 15 of the exterior wall 13. The drainage member 30 of this embodiment is placed on the main body 21 so that the outer surface 40a of the exterior wall constituent part 40 is flush with the outer surface 15a of the exterior wall member 15 of the exterior wall 13 in a plan view.

[0057] In the first step, the sealant 25 is filled between the exterior wall member 15 and the exterior wall constituent part 40. The sealant 25 is filled so as to fill the gap between the exterior wall member 15, the sash 19, and the exterior wall constituent part 40 of the flashing member 30.

[0058] As shown in FIG. 5, in the second step, the coping board 22 is placed on the water drainage member 30.

[0059] <Operation of the embodiment> A first effect of this embodiment will be described. The water drainage member 30 is disposed at a connection portion CP1 between the exterior wall 13 and the main body 21 of the exterior wall connection structure 20. By disposing the water drainage member 30 on the main body 21 of the exterior wall connection structure 20, the exterior wall constituent portion 40 of the water drainage member 30 constitutes a part of the exterior wall 13 at the connection portion CP1. By filling the gap between the exterior wall member 15 and the exterior wall constituent portion 40 with a sealant 25, the exterior wall 13 at the connection portion CP1 can be formed.

[0060] A second effect of this embodiment will be described. A water trimming that has conventionally been used in the connection portion between the exterior wall 13 and the exterior wall connection structure 20 has a surface portion that covers the upper surface 21a of the main body portion 21 of the exterior wall connection structure 20, and a rising portion that extends upward from the surface portion along the exterior wall main body portion 14. In a conventional water trimming, the rising portion is attached to the exterior wall main body portion 14 with waterproof tape. When using a conventional water trimming, an exterior wall member 15 is placed on the exterior wall 13 so as to cover the rising portion.

[0061] When the sash 19 is located above the connection between the exterior wall 13 and the exterior wall connection structure 20, as in the connection portion CP1, a method of fitting a small piece of the same material as the exterior wall member 15 between the main body 21 of the exterior wall connection structure 20 and the sash 19 is considered. In this method, for example, by filling the gap between the small piece and the exterior wall member 15 with a sealant 25, the waterproofing of the exterior wall 13 at the connection portion CP1 is ensured, so that a rising portion is not required as in the conventional water drain. However, it is time-consuming to process the small piece to fit the shape between the main body 21 and the sash 19, and to seal between the small piece and the exterior wall member 15. In addition, there is a risk that the waterproofing of the exterior wall 13 will decrease if the small piece cracks.

[0062] In the building 10, the flashing member 30 has the exterior wall component 40, so even without the rising portion of a conventional flashing, it is possible to prevent water from seeping into the inside of the exterior wall member 15. In addition, because the support portion 42 of the exterior wall component 40 is made of a metal plate, cracks are less likely to occur compared to when small pieces are used. By constructing the exterior wall 13 at the connection portion CP1 using the exterior wall component 40, it is possible to improve the workability of the connection portion CP1 while ensuring the waterproofing of the exterior wall 13 at the connection portion CP1.

[0063] <Effects of the embodiment> The effects of this embodiment will be described. (1) The water drainage member 30 is arranged at the connection portion CP1 between the exterior wall 13 and the main body portion 21. The water drainage member 30 has a first surface portion 31 and an exterior wall constituent portion 40. The exterior wall constituent portion 40 constitutes a part of the exterior wall 13. The exterior wall constituent portion 40 is configured to protrude upward from the exterior wall side end portion 31a of the first surface portion 31 in the arranged state. The exterior wall constituent portion 40 has a sealing receiving surface 46. The sealing receiving surface 46 receives the sealing material 25 used for the exterior wall 13.

[0064] According to this configuration, the exterior wall constituent part 40 is provided on the exterior wall side end part 31a of the first surface part 31, so that by arranging the water drainage member 30 on the main body part 21 of the exterior wall connection structure 20, the exterior wall constituent part 40 can constitute part of the exterior wall 13. Since the exterior wall constituent part 40 of the water drainage member 30 constitutes part of the exterior wall 13, the workability of the connection part CP1 between the exterior wall 13 and the exterior wall connection structure 20 can be improved.

[0065] In addition, since the sealing receiving surface 46 is sealed, water flowing along the first surface portion 31 can be effectively prevented from flowing into the inside of the outer wall 13.

[0066] (2) The exterior wall constituent portion 40 has an exterior wall constituent member 41. The exterior wall constituent member 41 is made of at least one of a ceramic material, concrete, and a metal.

[0067] According to this configuration, at least one of the ceramic material, the concrete, and the metal can suppress a decrease in the fire resistance of the exterior wall 13 at the connection portion CP1.

[0068] (3) The exterior wall constituent part 40 has a support part 42. The support part 42 supports the exterior wall constituent member 41. The support part 42 has a support main body part 43, a first support side part 44, and a second support side part 45. The support main body part 43, the first support side part 44, and the second support side part 45 form an accommodation space in which the exterior wall constituent member 41 is accommodated.

[0069] According to this configuration, since the exterior wall constituent member 41 is accommodated in the accommodation space HS, the exterior wall constituent member 41 is unlikely to be exposed to the environment such as sunlight, outside air, etc. Therefore, the condition of the exterior wall constituent member 41 can be maintained in a favorable manner.

[0070] (4) The sealing receiving surface 46 has a first sealing receiving surface 47 and a second sealing receiving surface 48. The water draining member 30 further has a sealing blocking portion 49. The sealing blocking portion 49 blocks the sealing material 25. The sealing blocking portion 49 is provided on the second sealing receiving surface 48.

[0071] According to this configuration, the sealing material 25 flowing downward along the second sealing receiving surface 48 can be blocked.

[0072] (5) The building 10 has an outdoor area 10A. The building 10 comprises a building main body 11 and an outdoor section 12. The outdoor section 12 constitutes the outdoor area 10A. The outdoor section 12 has an exterior wall connection structure 20. The exterior wall connection structure 20 comprises a main body 21, a water drainage member 30, and a cap board 22. The water drainage member 30 is disposed on the main body 21. The cap board 22 is disposed on the water drainage member 30. The water drainage member 30 is disposed on the main body 21 such that the exterior wall constituent part 40 overlaps horizontally with the exterior wall member 15 of the exterior wall 13. A sealant 25 is filled between the exterior wall member 15 and the exterior wall constituent part 40.

[0073] According to this configuration, in the arranged state, the exterior wall constituent part 40 overlaps horizontally with the exterior wall member 15 of the exterior wall 13, so that it is easy to fill the gap between the exterior wall constituent part 40 and the exterior wall member 15 with the sealant 25. Since sealing can be suitably performed at the connection part CP1 between the exterior wall 13 and the exterior wall connection structure 20, the construction period of the building 10 can be shortened.

[0074] (6) The exterior wall 13 of the building body 11 is provided with a window 18. The window 18 has a sash 19. The exterior wall connection structure 20 is connected to the underside of the sash 19 in the exterior wall 13. The exterior wall constituent part 40 is disposed between the main body part 21 and the sash 19.

[0075] According to this configuration, the exterior wall constituent part 40 is provided between the main body 21 of the exterior wall connection structure 20 and the sash 19. Therefore, the fire resistance and waterproofing of the exterior wall 13 can be improved compared to a case where the exterior wall constituent part 40 is not provided between the main body 21 of the exterior wall connection structure 20 and the sash 19.

[0076] (7) The drainage member 30 further has a sealing blocking portion 49. The sealing blocking portion 49 blocks the sealant 25. The sealing blocking portion 49 is disposed between the side surface 15b of the exterior wall member 15 and the side surface 40b of the exterior wall constituent portion 40 in a compressed state.

[0077] According to this configuration, the sealing blocking portion 49 can be tightly attached to the exterior wall member 15 and the exterior wall constituent portion 40, so that the sealing material 25 flowing downward between the exterior wall member 15 and the exterior wall constituent portion 40 can be effectively blocked.

[0078] (8) The construction method of the building 10 includes a first step and a second step. In the first step, the drainage member 30 is placed on the main body portion 21. In the first step, the drainage member 30 is placed on the main body portion 21 so that the exterior wall constituent portion 40 overlaps horizontally with the exterior wall member 15 of the exterior wall 13. In the first step, a sealant 25 is filled between the exterior wall member 15 and the exterior wall constituent portion 40. In the second step, a coping 22 is placed on the drainage member 30.

[0079] According to this configuration, after the water drainage member 30 is placed on the main body 21 of the exterior wall connection structure 20, the sealant 25 is filled between the exterior wall member 15 and the exterior wall constituent part 40, thereby forming the part of the exterior wall 13 located on the main body 21 of the exterior wall connection structure 20. In this way, the efficiency of construction at the connection part CP1 between the exterior wall connection structure 20 and the exterior wall 13 can be improved.

[0080] <Modification> The above-mentioned embodiment is an example of the possible forms of the building 10, the drainage member 30, and the construction method of the building 10, and is not intended to limit the forms. The building 10, the drainage member 30, and the construction method of the building 10 may take forms different from those exemplified in the above-mentioned embodiment. Examples of such forms include forms in which part of the configuration of the embodiment is replaced, changed, or omitted, or forms in which a new configuration is added to the embodiment. Modified examples of the embodiment are shown below.

[0081] <First Modification> As shown in FIG. 7 and FIG. 8, the water drainage member 30 may have an exterior wall component 40 and a rising surface portion 50. The rising surface portion 50 is configured to extend upward from the exterior wall side end portion 31b of the first surface extension portion 51 extending from the first surface portion 31. The rising surface portion 50 corresponds to the rising portion of a conventional water drainage scavenger. The exterior wall component 40 and the first surface extension portion 51 are arranged side by side in the width direction D2 at the exterior wall side end portion 31a of the first surface portion 31. The water drainage member 30 of this modification is used in an exterior wall connection structure 20 that is located half below the sash 19 in the width direction D2, as in the connection portion CP2 of FIG. 1. In this modification, an additional water stopper portion 52 may be provided on the first surface portion 31.

[0082] 1 and 8, the rising surface portion 50 is disposed so as to fit along the outer surface 14a of the exterior wall main body portion 14. The rising surface portion 50 is attached to the outer surface 14a of the exterior wall main body portion 14 with waterproof tape.

[0083] According to the configuration of this modified example, in the connection part CP2, a part of the exterior wall 13 can be configured by the exterior wall forming part 40 of the water drainage member 30 in the part that is arranged between the main body 21 of the exterior wall connection structure 20 and the sash 19. In addition, in the connection part CP2, in the part that is not arranged between the main body 21 of the exterior wall connection structure 20 and the sash 19, the rising surface part 50 can discharge water that has entered between the exterior wall main body part 14 and the exterior wall member 15 to the outside.

[0084] <Second Modification> As shown in Fig. 9 and Fig. 10, the water drainage member 30 may have an outer wall constituent part 40 and a rising surface part 50. The rising surface part 50 is connected to an additional surface part 61 extending from the first surface part 31. The additional surface part 61 extends from the outer wall side end part 31a of the first surface part 31 to the outer surface 14a of the outer wall main body part 14. The additional surface part 61 is inclined in the vertical direction in the extension direction D1 so that it is positioned higher as it approaches the outer surface 14a of the outer wall main body part 14. In this modification, the rising surface part 50 is configured to extend upward from the additional outer wall side end part 61a of the additional surface part 61.

[0085] In this modified example, the first guide portion 62 and the second guide portion 63 are disposed on the upper surface of the additional surface portion 61 so as to guide water flowing on the rising surface portion 50 to the first surface portion 31. The water drainage member 30 of this modified example may have a configuration corresponding to the water stop portion 33 of the embodiment.

[0086] As shown in Fig. 10, a sealant 25 may be filled between the second support side portion 45 of the exterior wall constituent part 40 and the second guide part 63. Note that Figs. 9 and 10 illustrate an exterior wall connection structure 20 in which the right side facing the exterior wall 13 is located below the sash 19. In this modification, the sash 19 is located above the exterior wall constituent part 40 in the vertical direction, and the exterior wall member 15 is located above the additional surface part 61.

[0087] In this modification, the support main body portion 43 of the exterior wall constituent portion 40 is configured to contact the outer surface 14a of the exterior wall main body portion 14. The support main body portion 43 of the exterior wall constituent portion 40 has an extension end portion 64. The extension end portion 64 is an end portion of a second portion of the support main body portion 43 located on the exterior wall main body portion 14 side in the extension direction D1. The extension end portion 64 contacts the base material 17.

[0088] According to the configuration of this modified example, since the additional surface portion 61 is inclined, water flowing down the rising surface portion 50 can be appropriately directed to the first surface portion 31. Furthermore, since the support main body portion 43 of the exterior wall constituent portion 40 contacts the outer surface 14a of the exterior wall main body portion 14, even if water flows from the rising surface portion 50 toward the exterior wall constituent portion 40, the water is unlikely to flow between the exterior wall main body portion 14 and the exterior wall member 15.

[0089] <Third Modification> 11 and 12, the drainage member 30 may have an outer wall constituent portion 40 and a rising surface portion 50. In this modification, the rising surface portion 50 is provided on the outer wall constituent portion 40.

[0090] In this modified example, the support main body portion 43 of the exterior wall constituent portion 40 is configured to contact the outer surface 14a of the exterior wall main body portion 14. The support main body portion 43 of the exterior wall constituent portion 40 has an extended end portion 64. The extended end portion 64 is an end portion of a second portion of the support main body portion 43 located on the exterior wall main body portion 14 side in the extension direction D1. The extended end portion 64 contacts the base material 17. The raised surface portion 50 of this modified example is configured to extend upward from the extended end portion 64 of the support main body portion 43.

[0091] In this modification, the first guide portion 62 and the second guide portion 63 are disposed on the upper surface of the exterior wall constituent portion 40 so as to guide water flowing on the rising surface portion 50 to the first surface portion 31. The water drainage member 30 shown in Figs. 11 and 12 may have a configuration corresponding to the water stop portion 33 of the embodiment. Note that Figs. 11 and 12 exemplify an exterior wall connection structure 20 in which the right side facing the exterior wall 13 is located below the sash 19. In this modification, in the vertical direction, the exterior wall member 15 is located above the portion from the first guide portion 62 to the second guide portion 63 in the width direction D2.

[0092] According to the configuration of this modification, the size of the exterior wall component 40 can be suitably maintained in the water flashing member 30 used in the exterior wall connection structure 20, half of which is located below the sash 19 in the width direction D2. This makes it possible to suitably suppress a decrease in the fire resistance of the exterior wall 13.

[0093] <Other Modifications> The outdoor area 10A may be configured as a veranda or a balcony. In this modification, the exterior wall connection structure 20 may be configured as a rising wall surrounding a part of the veranda or the balcony.

[0094] The water flashing member 30 may be used in an exterior wall connection structure 20 that is not connected below the sash 19 in the exterior wall 13. In this modified example, the sash 19 is not located above the exterior wall constituent part 40. Even in this configuration, part of the exterior wall 13 can be formed by the exterior wall constituent part 40 of the water flashing member 30, thereby improving the ease of installation between the exterior wall connection structure 20 and the exterior wall 13.

[0095] In front view, the exterior wall constituent part 40 may be disposed between the main body part 21 of the exterior wall connection structure 20 and the exterior wall equipment. The exterior wall equipment in this modified example is equipment provided on the exterior wall 13. An example of the exterior wall equipment is the sash 19 in the embodiment. Other examples of exterior wall equipment are openings, bay windows, and shutter pockets that do not use the sash 19 provided on the exterior wall 13.

[0096] The drainage member 30 may be arranged such that the outer surface 40a of the exterior wall constituent part 40 is not flush with the outer surface 15a of the exterior wall member 15 in a plan view. In the present modified example, the drainage member 30 is arranged such that the outer surface 40a of the exterior wall constituent part 40 is misaligned with the outer surface 15a of the exterior wall member 15 in a plan view. Even if the outer surface 40a of the exterior wall constituent part 40 is misaligned with the outer surface 15a of the exterior wall member 15 as in this modified example, the exterior wall constituent part 40 overlaps with the exterior wall member 15 in the horizontal direction, allowing for suitable sealing work.

[0097] The exterior wall component 41 may be formed by combining two or more types of materials among ceramic materials, concrete, and metal. In this modification, the storage space HS may accommodate an exterior wall component 41 composed of two or more types of materials.

[0098] The shape of the support portion 42 is not limited as long as it can form the storage space HS. For example, the first support side portion 44 and the second support side portion 45 may be omitted from the support portion 42. The support portion 42 may be configured to cover the opening of the storage space HS.

[0099] The support portion 42 may be omitted from the exterior wall constituent portion 40. In this modification, the exterior wall constituent member 41 may be attached directly to the first surface portion 31.

[0100] The water-stopping portion 33 may be omitted from the drainage member 30.

[0101] The sealing stopper portion 49 may be omitted from the drainage member 30. Alternatively, one of the two sealing stopper portions 49 may be omitted. For example, when the distance between the side surface 15b of the exterior wall member 15 and the side surface 40b of the exterior wall constituent portion 40 is sufficiently small, the sealing stopper portion 49 located between the side surface 15b of the exterior wall member 15 and the side surface 40b of the exterior wall constituent portion 40 is omitted.

[0102] The water blocking portion 33 and the sealing blocking portion 49 may be made of materials other than sponge members, such as metal, wood, and plastic.

[0103] The buffer member 36 may be omitted from the drainage member 30. In this modification, the lower surface of the first surface portion 31 may be in direct contact with the upper end of the wall material 24.

[0104] The present specification discloses the following techniques: [Appendix 1] A water-draining member that is placed at the connection portion between the exterior wall of a building and a main body of an exterior wall connection structure that is connected to the exterior wall, the water-draining member having a first surface portion covering the upper surface of the main body portion and an exterior wall component portion that forms part of the exterior wall, the exterior wall component portion being configured to protrude upward from the exterior wall side end portion of the first surface portion when the water-draining member is arranged on the main body portion, and having a sealing receiving surface that receives a sealing material used on the exterior wall.

[0105] [Appendix 2] The water-repellent member described in Appendix 1, wherein the exterior wall component has an exterior wall component made of at least one of a ceramic material, concrete, and metal.

[0106] [Appendix 3] The exterior wall constituent part has a support part that supports the exterior wall constituent member, the support part having a support main body part connected to the exterior wall side end part of the first surface part, a first support side part connected to one of both end parts of the support main body part in the width direction of the main body part in the arranged state, and a second support side part connected to the other of both end parts of the support main body part in the width direction, and the support main body part, the first support side part, and the second support side part form a storage space in which the exterior wall constituent member is accommodated, a water-draining member as described in Appendix 2.

[0107] [Appendix 4] A water-draining member as described in any one of Appendices 1 to 3, further comprising a sealing blocking portion that blocks the sealing material, the sealing receiving surface having a first sealing receiving surface extending horizontally on an upper surface of the exterior wall component and a second sealing receiving surface extending vertically on a side surface of the exterior wall component, the sealing blocking portion being provided on the second sealing receiving surface.

[0108] [Appendix 5] A building having an outdoor area, comprising a building main body and an outdoor part constituting the outdoor area, the outdoor part having an exterior wall connection structure connected to an exterior wall of the building main body, the exterior wall connection structure comprising a main body, a water drainage member arranged on the main body, and a coping arranged on the water drainage member, the water drainage member having a first surface portion covering an upper surface of the main body, and an exterior wall component part constituting part of the exterior wall, the exterior wall component part being arranged on the main body part so as to overlap horizontally with an exterior wall member of the exterior wall, and a sealant being filled between the exterior wall member and the exterior wall component part.

[0109] [Appendix 6] The building described in Appendix 5, wherein the exterior wall of the building body is provided with a window having a sash, the exterior wall connection structure is connected below the sash in the exterior wall, and the exterior wall component of the water drainage member is positioned between the main body of the exterior wall connection structure and the sash.

[0110] [Appendix 7] The building described in Appendix 5 or 6, wherein the water drainage member further has a sealing blocking portion that blocks the sealing material, and the sealing blocking portion is positioned in a compressed state between a side surface of the exterior wall member and a side surface of the exterior wall component.

[0111] [Appendix 8] A construction method for a building having an outdoor portion having an exterior wall connection structure connected to the exterior wall of the building main body, comprising a first step of placing a water drainage member on top of a main body portion of the exterior wall connection structure, and a second step of placing a coping on top of the water drainage member, wherein the water drainage member has a first surface portion covering an upper surface of the main body portion and an exterior wall component portion that constitutes part of the exterior wall, and in the first step, the water drainage member is placed on top of the main body portion so that the exterior wall component portion horizontally overlaps with an exterior wall member of the exterior wall, and a sealant is filled between the exterior wall member and the exterior wall component portion. [Explanation of symbols]

[0112] CP1, CP2...connection parts, D2...width direction, HS...storage space, 10...building, 10A...outdoor area, 11...building main body, 12...outdoor part, 13...exterior wall, 15...exterior wall component, 18...window, 19...sash, 20...exterior wall connection structure, 21...main body, 22...cap board, 25...sealing material, 30...water drainage member, 31...first surface portion, 31a...exterior wall side end portion, 40...exterior wall component part, 41...exterior wall component part, 42...support part, 43...support main body part, 44...first support side part, 45...second support side part, 46...sealing receiving surface, 47...first sealing receiving surface, 48...second sealing receiving surface, 49...sealing blocking part.

Claims

1. A water drainage member to be placed at a connection portion between an exterior wall of a building and a main body of an exterior wall connection structure connected to the exterior wall, A first surface portion covering an upper surface of the main body portion; An outer wall component that constitutes a part of the outer wall, The outer wall component is configured to protrude upward from the outer wall side end of the first surface portion when the water drainage member is arranged on the main body portion, and has a sealing receiving surface that receives a sealing material used for the outer wall. Water drainage parts.

2. The exterior wall component has an exterior wall component member made of at least one of a ceramic material, concrete, and metal. The drainage member according to claim 1 .

3. The exterior wall constituent portion has a support portion that supports the exterior wall constituent member, The support portion is A support body portion connected to an outer wall side end portion of the first surface portion; a first support side portion connected to one of both end portions of the support main body portion in a width direction of the main body portion in the arranged state; a second support side portion connected to the other of the two end portions of the support body portion in the width direction, The support body portion, the first support side portion, and the second support side portion form an accommodation space in which the exterior wall component is accommodated. The drainage member according to claim 2.

4. The sealing member further includes a sealing blocking portion that blocks the sealing material, The sealing surface has a first sealing surface extending horizontally on an upper surface of the exterior wall constituent part and a second sealing surface extending vertically on a side surface of the exterior wall constituent part, The sealing blocking portion is provided on the second sealing receiving surface, A drainage member according to any one of claims 1 to 3.

5. A building having an outdoor area, The building body, an outdoor section that constitutes the outdoor area; The outdoor portion has an exterior wall connection structure connected to an exterior wall of the building body, The exterior wall connection structure includes a main body, a water drainage member disposed on the main body, and a coping board disposed on the water drainage member, The drainage member has a first surface portion covering an upper surface of the main body portion and an outer wall component portion constituting a part of the outer wall, and is arranged on the main body portion so that the outer wall component portion overlaps with the outer wall member of the outer wall in a horizontal direction; A sealant is filled between the outer wall member and the outer wall constituent part. architecture.

6. The exterior wall of the building body includes a window having a sash, The exterior wall connection structure is connected to the bottom of the sash at the exterior wall, The exterior wall constituent portion of the water drainage member is disposed between the main body portion of the exterior wall connection structure and the sash. The building according to claim 5.

7. The drainage member further includes a sealing blocking portion that blocks the sealing material, The sealing stopper is disposed in a compressed state between a side surface of the outer wall member and a side surface of the outer wall constituent part.

7. A building according to claim 5 or 6.

8. A construction method for a building having an outdoor portion having an exterior wall connection structure connected to an exterior wall of a building body, comprising: A first step of placing a water drainage member on a main body of the exterior wall connection structure; A second step of placing a coping on the water drainage member, The drainage member has a first surface portion covering an upper surface of the main body portion and an outer wall component portion constituting a part of the outer wall, In the first step, the drainage member is disposed on the main body so that the exterior wall constituent part overlaps with the exterior wall member of the exterior wall in a horizontal direction, and a sealant is filled between the exterior wall member and the exterior wall constituent part. Construction methods for buildings.

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