JP2014114658A - Drainage structure of building, and building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage structure of a building that secures waterproof performance and is simple in constitution and good in workability even in a complicated region where a surface of an outer wall is made uneven, and the building.SOLUTION: An accessory 66 which constitutes a part of a cutoff accessory 60 includes standing wall parts 66A, 66B opposed to an inner wall part 34 of an upper floor-side outer wall panel 30A, and horizontal parts 66C, 66D opposed to a lower end face 76A of the upper floor-side outer wall panel 30A. An insert piece 66G droops from a tip part of the horizontal part 66D and a side end part of the horizontal part 66F, and is inserted into a hollow part 38B of a parapet wall 78. Consequently, when water flowing in the hollow part of an upper wall 78 or water entering longitudinal joints 52 and lateral joints 54 reaches the horizontal part 66F of the accessory 66, the water runs horizontally on the horizontal part 66F to be drained into the hollow part 38B. In an embodiment, waterproof performance is thus secured and workability can be improved even in a complicated region, with simple constitution.

Description

  The present invention relates to a building drainage structure and a building.

  Patent Document 1 discloses a horizontal joint waterproof structure between extruded cement plates arranged vertically by vertical stretching. Specifically, a non-rigid first backup material is affixed to the front part (outdoor side) of the hanging plate part provided on the draining board, and the second backup material is applied to the front part of the first backup material. It touches. The front side of the second backup material is filled with a sealing material that closes between the upper and lower cement plates.

  Moreover, the unevenness | corrugation for water flow is formed in the 1st backup member along the longitudinal direction, and a water flow part is formed between the 2nd backup members. For this reason, the water received by the draining board is guided into the hollow part formed in the lower cement board through the water flow part.

JP 2003-343023 A

  However, in this prior art, the members extending along the horizontal direction are attached to each other or brought into contact with each other. It becomes complicated and workability is poor.

  In consideration of the above facts, the present invention secures waterproof performance, and can obtain a drainage structure and a building having good workability with a simple structure even in a complicated part provided with irregularities on the surface of the outer wall. Is the purpose.

  The drainage structure for a building according to the present invention as set forth in claim 1 constitutes a part of the outer wall, and the upper floor side outer wall panel through which the first hollow portion penetrates along the vertical direction, and the lower floor side outer wall panel. A lower floor side outer wall panel that is disposed on the side and forms a part of the outer wall together with the upper floor side outer wall panel, and a second hollow part that communicates with the first hollow part passes along the vertical direction; And at least one of the corners, located on the back side of the outer wall and disposed between the upper floor side outer wall panel and the lower floor side outer wall panel, in accordance with the shape of the upper floor side outer wall panel. It has a drainage member which is arranged directly opposite to the back and lower end surfaces of the floor side outer wall panel or via a water stop member, and whose lower end in the vertical direction is inserted into the second hollow portion.

  In the building drainage structure according to the first aspect of the present invention, the upper floor side outer wall panel and the lower floor side outer wall panel which constitute a part of the outer wall and are arranged vertically are provided with a first hollow along the vertical direction. The first hollow portion and the second hollow portion are in communication with each other.

  Here, in at least one of the contact portion and the corner portion, a drainage member is disposed between the upper floor side outer wall panel and the lower floor side outer wall panel on the back side of the outer wall. That is, the drainage member is provided at a so-called horizontal joint. Further, the drainage member is arranged in accordance with the shape of the upper floor side outer wall panel so as to face the back surface and the lower end surface of the upper floor side outer wall panel directly or through a water stop member, and the lower end side in the vertical direction of the drainage member is It is inserted into the second hollow portion formed in the lower floor side outer wall panel.

  In the contact portion and the corner portion, since the outer wall is provided with the corner portion and the corner portion, a complicated shape is formed, and the housing between the members in the contact portion and the corner portion becomes complicated as compared with the general portion of the outer wall. Therefore, the drainage member disposed at the contact portion or the corner portion so as to face the back surface and the lower end surface of the upper floor side outer wall panel directly or through the water stop member according to the shape of the upper floor side outer wall panel is used. Therefore, even if it is a complicated site | part, the accommodation between members can be simplified.

  Moreover, the lower end side of the vertical direction of this drainage member is inserted into the 2nd hollow part formed in the lower floor side outer wall panel. For this reason, the water flowing through the first hollow portion of the upper floor side outer wall panel due to the intrusion of rainwater or the like is drained to the inside of the second hollow portion of the lower floor side outer wall panel and finally discharged outside the building. That is, the drainage route of the building can be secured through the drainage member.

  A building drainage structure according to a second aspect of the present invention is the building drainage structure according to the first aspect, wherein the drainage member is a standing wall portion disposed to face the back surface of the upper floor side outer wall panel. A horizontal portion that is bent with respect to the standing wall portion and is disposed to face a lower end surface of the upper floor side outer wall panel, and a plug that is suspended from the front end portion of the horizontal portion and is inserted into the second hollow portion. And a piece.

  In the building drainage structure according to the second aspect of the present invention, the drainage member is disposed to face the rear surface of the upper floor side outer wall panel and the lower wall surface of the upper floor side outer wall panel. A horizontal portion that is bent with respect to the standing wall portion. An insertion piece hangs down from the tip of the horizontal portion, and is inserted into the second hollow portion.

  Generally, the horizontal joints and vertical joints of the outer wall are sealed with a sealing material. However, in the vertical joints and the horizontal joints, rainwater or the like infiltrates into the back (indoor side) of the sealing material due to the sealant being cut off. In this case, when the water that has entered the vertical joint and the horizontal joint reaches the horizontal portion of the drainage member, the water is discharged into the second hollow portion through the insertion piece.

  A building drainage structure according to a third aspect of the present invention is the building drainage structure according to the first or second aspect, wherein the water flowing in the first hollow portion is in the balconi or veranda. It is discharged to the floor part that constitutes a part.

  In the building drainage structure according to the third aspect of the present invention, in the balconi or the veranda, the water flowing in the first hollow portion of the upper floor side outer wall panel due to the intrusion of rainwater or the like constitutes a part of the balconi or the veranda. Since it is discharged to the floor portion, the water on the floor portion can be drained to the outdoor side through a drain pipe provided on the floor portion.

  The building drainage structure according to the present invention as set forth in claim 4 is the building drainage structure according to any one of claims 1 to 3, wherein a penthouse is provided on the uppermost floor, and an outer wall of the penthouse is provided on the outer wall of the penthouse. Only a vertical joint is provided, and the drainage member is disposed at the lower part of the penthouse.

  In the building drainage structure according to the fourth aspect of the present invention, since only the vertical joint is provided on the outer wall of the penthouse, the drainage member may be disposed in the lower part of the penthouse.

  The building according to the present invention described in claim 5 is the upper floor side outer wall panel and the lower floor side outer wall panel described in any one of claims 1 to 4, the upper floor side outer wall panel, and the lower floor. The water which is arrange | positioned in the horizontal joint formed between the side outer wall panels and flows in the 1st hollow part with which the said upper floor side outer wall panel is equipped is discharged | emitted to the 2nd hollow part with which the said lower floor side outer wall panel is equipped. It has a drainage member given in any 1 paragraph of Claims 1-4.

  In the building which concerns on this invention of Claim 5, the drainage member is arrange | positioned by the horizontal joint formed between the upper floor side outer wall panel and the lower floor side outer wall panel. Thereby, the drainage path of the building which discharges the water which flows in the 1st hollow part with which an upper floor side outer wall panel is equipped to the 2nd hollow part with which a lower floor side outer wall panel is equipped via the drainage member can be secured. .

  As described above, the building drainage structure according to the first aspect of the present invention secures waterproof performance and is easy to construct even in a complex part having irregularities on the surface of the outer wall. It has the outstanding effect that it can improve.

  The drainage structure for a building according to the second aspect of the present invention has an excellent effect that the waterproof performance can be improved with a simple configuration.

  The drainage structure for a building according to the third aspect of the present invention can discharge the water flowing in the first hollow portion of the upper floor side outer wall panel to the outdoor side through the water pipe provided on the floor portion of the balcony or the veranda. , Has an excellent effect.

  The drainage structure for a building according to the present invention described in claim 4 has an excellent effect that the cost can be reduced as compared with the case where a horizontal joint is provided on the outer wall of the penthouse.

  The building according to the present invention described in claim 5 has the excellent effect that the maintenance cost of the building can be reduced by securing the drainage path of the building, and the economic burden on the user can be reduced. Have.

It is a disassembled perspective view which shows the state by which the water stop thing which comprises the drainage structure of the building which concerns on this Embodiment was attached to the wall contact part. It is a disassembled perspective view which shows the state by which the water stop thing which comprises the drainage structure of the building which concerns on this Embodiment is attached to a wall contact part. It is an expanded sectional view which shows the state cut | disconnected along the 3-3 line of FIG. It is a perspective view for demonstrating the effect | action on the water stop thing which comprises the drainage structure of the building which concerns on this Embodiment. The left side of the drawing is an explanatory view for explaining the drainage path in the building cut along the line 5L-5L shown in FIG. 6, and the right side of the drawing is cut along the line 5R-5R shown in FIG. FIG. It is a perspective view which shows an example of a building. It is a perspective sectional view showing an outer wall panel in which an extrusion-molded cement board is used.

  The building drainage structure according to the present embodiment will be described below with reference to the drawings.

  As illustrated in FIG. 6, for example, the building 10 includes a first floor portion 12, a second floor portion 14, a third floor portion 16, and a fourth floor portion 18. The second floor portion 14 is provided with a balconi 20 and a bay window 22 (sash 23) having a cantilever structure, and the third floor portion 16 is provided with a roof balcony 24. In addition, a penthouse 26 is provided on the fourth floor portion 18 which is the top floor, and a parapet 28 is erected on the peripheral edge of the fourth floor portion 18. That is, in this building 10, the surface of the outer wall 11 is uneven.

  Extruded cement board (ECP) is used for the outer wall panel 30 of this building 10, and in this building 10, the outer wall panel 30 is divided | segmented for every hierarchy. In general, as shown in FIG. 7, an outer wall panel 30 using an extrusion-molded cement board is arranged on the outdoor side and forms a design surface parallel to the outer wall portion 32. And an arranged inner wall portion 34.

  Between the outer wall portion 32 and the inner wall portion 34, a plurality of connecting portions 36 that vertically connect the outer wall portion 32 and the inner wall portion 34 are provided at a predetermined pitch. That is, the outer wall panel 30 has a plurality of hollow portions 38 extending along the height direction at a predetermined pitch. The hollow portion 38 includes a hollow portion 38A of an outer wall panel on the upper floor side (hereinafter referred to as “upper floor side outer wall panel”) 30A and an outer wall panel on the lower floor side (hereinafter referred to as “lower floor side outer wall panel”) 30B. The hollow portions 38B are arranged so as to communicate with each other continuously in the building height direction.

  Here, as shown in FIG. 2, in the wall contact portion 62 of the parapet 28 as one of the contact portions 92 described later, in the parapet wall 78, the adjacent hollow portion is located on the outer wall portion 32 side of the connecting portion 36. A slit 36 </ b> A (not shown in FIG. 7) that connects 38 </ b> B is formed in parallel with the outer wall portion 32.

  By the way, generally, a cap 29 (see FIG. 3) is provided at the upper end of the parapet 28, the waist wall 24A of the roof balcony 24 shown in FIG. 6, and the waist wall 20A of the balcony 20 (each may be a handrail). The upper end of the parapet 28, the waist wall 20 </ b> A of the balcony 20, and the waist wall 24 </ b> A of the roof balconi 24 is stopped by the cap 29.

  On the other hand, as shown in FIG. 7, a horizontal joint 54 is provided between the upper floor side outer wall panel 30 </ b> A and the lower floor side outer wall panel 30 </ b> B, and the outer wall panel 30 on the same floor is adjacent to the left and right. A vertical joint 52 is provided between the outer wall panel 30 and the outer wall panel 30. The vertical joint 52 and the horizontal joint 54 are each filled with an indeterminate seal 56 to ensure the waterproof performance of the building 10. However, when a so-called seal breakage occurs in the vertical joints 52 and the horizontal joints 54, rainwater may enter the indoor 15 side through the vertical joints 52 and the horizontal joints 54.

  Here, the left side of the drawing in FIG. 5 is an explanatory view for explaining the drainage path in the building 10 cut along the line 5L-5L shown in FIG. 6, and the right side of the drawing in FIG. It is explanatory drawing explaining the drainage path in the building 10 of the state cut | disconnected along the 5R-5R line shown.

  In the building 10 shown in FIG. 5, since the area A is provided only with the vertical joint 52 (see FIG. 7), when rainwater enters from the vertical joint 52, the rainwater moves downward along the extending direction of the vertical joint 52. Flowing. However, in the region B, a horizontal joint 54 (see FIG. 7) is provided between the upper end of the region B and the outer wall panel 30 on the upper floor side. For this reason, rainwater that has entered from the vertical joint 52 in the region A flows (runs sideways) along the horizontal joint 54 at the upper end portion in the region B.

  In general, in the general part of the outer wall panel 30 (portion where no protruding corner or entering corner is provided), the horizontal joint 54 is provided with a water stop function (not shown). The rainwater infiltrated from the vertical joint 52 by the object is received, and the rainwater is guided to the hollow portion 38 (see FIG. 7) formed in the outer wall panel 30 on the lower floor side. For this reason, in the region B, rainwater that has entered from the vertical joint 52 flows in the hollow portion 38 of the outer wall panel 30 and flows along the vertical joint 52.

(Composition of water-stopper)
Here, the structure applied to the water stop member 60 as the drainage member according to the present embodiment will be described as an example applied to the wall contact portion 62 of the parapet 28 shown in FIGS. 1 and 2. 2 is shown as an exploded perspective view of the wall contact portion 62 in FIG. 6 in an enlarged state, and FIG. 1 shows a state where the water stop member 60 is attached to the wall contact portion 62. ing.

  As shown in FIG. 1 and FIG. 2, in the wall contact portion 62 of the parapet 28, an upper wall 76 corresponding to the upper floor side outer wall panel is formed in a protruding corner state. According to the shape of the wall 76, the cross-sectional shape cut | disconnected along the horizontal direction is formed so that it may become crank shape.

  The water-stopping accessory 60 is formed of, for example, a resin, and an accessory 66 in which a corner 65 corresponding to the corner 64 of the upper wall 76 is formed, and an accessory disposed on both sides of the accessory 66. 68 and 70. The accessory 66 and the accessory 68 are joined by a joint tape 72, and the accessory 66 and the accessory 70 are joined by a joint tape 74.

  Here, the objects 66 and 68 have a substantially L-shaped cross-section cut along the horizontal direction (however, the object 66 and the object 68 have L-shaped orientations reversed). The accessory 70 has a substantially rectangular cross-sectional shape cut along the horizontal direction.

  The accessory 66 is provided so as to be opposed to the inner wall portion 34 as the back surface of the upper wall 76, and includes standing wall portions 66 </ b> A and 66 </ b> B that form an L-shape and form corner portions 65 in plan view. From the lower end portions of the standing wall portions 66A and 66B, horizontal portions 66C and 66D that can face the lower end surface 76A of the upper wall 76 extend in substantially horizontal directions, respectively. The horizontal portions 66C and 66D are preferably inclined surfaces that slightly incline downward as they are separated from the standing wall portions 66A and 66B. The same applies to the other horizontal portions formed on the accessories 66, 68, and 70, respectively. is there.

  In addition, a rear wall portion 66E that is bent downward and corresponds to the position of the horizontal joint 54 is provided at the tip of the horizontal portion 66C. From the lower end portion of the rear wall portion 66E, a horizontal portion 66F facing the upper end surface 78A of the parapet wall 78 corresponding to the lower floor side outer wall panel extends along a substantially horizontal direction. Furthermore, an insertion piece 66G that is bent downward and is inserted into the hollow portion 38 of the parapet wall 78 and the slit 36A is provided at the front end portion of the horizontal portion 66D and the side end portion of the horizontal portion 66F.

  On the other hand, the accessory 68 includes a standing wall portion 68A that can face the inner wall portion 34 as a back surface of the upper wall 76 and a standing wall portion 68B that can face the side end surface 30A1 of the outer wall panel 30. From the lower end portion of the standing wall portion 68A, a horizontal portion 68C that can face the lower end surface 76A of the upper wall 76 extends along a substantially horizontal direction. Further, an insertion piece 68D that is bent downward and is inserted into the hollow portion 38B of the parapet wall 78 and the slit 36A is provided at the tip of the horizontal portion 68C.

  Further, the accessory 70 includes an upright wall portion 70A that can be opposed to the inner wall portion 34 as a back surface of the upper wall 80 that is disposed adjacent to the upper wall 76. From the lower end portion of the upright wall portion 70A, A horizontal portion 70B that can face the lower end surface 80A of 80 extends along a substantially horizontal direction.

  Further, at the front end portion of the horizontal portion 70B, a back wall portion 70C that is bent downward and corresponds to the position of the horizontal joint 54 is provided. From the lower end of the inner wall 70C, the upper end surface 82A of the parapet frame 82 and the lower outer wall panel (lower wall 84) are arranged on the indoor side of the parapet wall 78 and arranged in parallel with the parapet wall 78. A horizontal portion 70D that can be opposed to the upper end surface 84A extends substantially in the horizontal direction.

  In the horizontal portion 70D, a notch 70D1 is formed (notched) in accordance with the positions of the wall surface 82B of the parapet frame 82 and the wall surface 84B of the lower wall 84. Further, next to the accessory 70, there is provided a water stopping accessory (not shown) used for the general portion 108 (see FIG. 6) where the corner portion 64 is not provided in the outer wall 11.

  Here, the attachment method of the water stop accessory 60 is demonstrated.

  As shown in FIGS. 1 and 2, the insertion piece 68 </ b> D of the accessory 68 is inserted into the hollow portion 38 of the parapet wall 78 and the slit 36 </ b> A, and the standing wall portion 68 </ b> B is attached to the side end face 30 </ b> A <b> 1 of the outer wall panel 30. An adhesive is applied in advance to the standing wall portion 68B (or a double-sided tape is stuck), and the standing wall portion 68B is attached to the outer wall panel 30 by peeling off the tape 69 stuck to the surface of the adhesive. Affixed to the side end face 30A1.

  Further, the horizontal portion 70D of the accessory 70 is opposed to the upper end surface 82A of the parapet frame 82 and the upper end surface 84A of the lower wall 84. Next, in a state where the notch 70D1 is aligned with the wall surface 82B of the parapet frame 82 and the wall surface 84B of the lower wall 84, the horizontal portion 70D is attached to the upper end surface 82A of the parapet frame 82. Like the standing wall portion 68B of the accessory 68, the horizontal portion 70D is preliminarily coated with an adhesive, and the horizontal portion 70D is removed from the upper end surface of the parapet frame 82 by removing the tape 71 attached to the surface of the adhesive. Affixed to 82A.

  Next, the accessory 66 is arranged between the accessory 68 and the accessory 70. Specifically, the accessory 66 is disposed on the parapet wall 78 in a state where the insertion piece 66G of the accessory 66 is inserted into the hollow portion 38 of the parapet wall 78 and the slit 36A. At this time, a gap is provided between the accessory 66 and the accessory 68 and between the accessory 66 and the accessory 70 so as not to overlap each other. Then, in a state where the objects 66, 68, 70 are arranged at predetermined positions, the object 66 and the object 68 are joined with the joint tape 72, and the object 66 and the object 70 are joined together. Join with tape 74.

  Next, as shown in FIG. 1, a long secondary water stop sheet 86 as a water stop member is attached to the standing wall portion 66 </ b> A of the accessory 66 and the standing wall portion 70 </ b> A of the accessory 70. Further, in the water-stopping member 60, a primary water-stopping horizontal joint backer 88 whose cross-sectional shape cut along the horizontal direction forms an L shape is fitted in a portion corresponding to the horizontal joint 54.

  The side of the primary water stop horizontal joint backer 88 is formed in a sawtooth shape along the longitudinal direction, and rainwater can flow along the height direction of the primary water stop horizontal joint backer 88. ing. In addition, as shown in FIG. 3, an indeterminate seal 56 is filled on the outdoor side of the primary waterstop horizontal joint backer 88. The vertical joint 52 is the same as the horizontal joint 54.

(Operation and effect of water stop function)
Next, the action / effect of the water stop member 60 as the drainage member according to the present embodiment will be described.

  As shown in FIG. 7, the upper floor side outer wall panel 30 </ b> A and the lower floor side outer wall panel 30 </ b> B that constitute a part of the outer wall 11 and are arranged vertically are provided with a hollow portion 38 </ b> A and a hollow portion 38 </ b> B along the vertical direction. , And the hollow portion 38A and the hollow portion 38B communicate with each other.

  Here, as shown in FIGS. 1 and 2, in the wall contact portion 62 of the parapet wall 78, there is a back side of the horizontal joint 54 provided between the upper floor side outer wall panel 30 </ b> A and the lower floor side outer wall panel 30 </ b> B. A water stop 60 is provided.

  In the wall contact portion 62, the corner portion 64 is provided on the outer wall 11, so that the accommodation between the members becomes complicated as compared with the general portion 108 in which the corner portion 64 is not provided in the outer wall 11. Therefore, as shown in FIGS. 1 and 2, in the wall contact portion 62, the outer wall 11 is formed by using a water-stopping member 60 formed in accordance with the shape of the upper wall 76 on the back side of the upper wall 76. Even if it is a complicated shape, the accommodation between members can be simplified.

  Further, as shown in FIGS. 1 and 2, the water-stopper 60 has an inner wall portion 34 as a back surface of the upper wall 76 in accordance with the shape of the upper wall 76 corresponding to the upper floor side outer wall panel 30A. The hollow portions 38B and slits formed so that the insertion pieces 68D and 66G located at the lower end portion in the vertical direction of the water-stopping member 60 are formed so as to face the lower end surface 76A and correspond to the lower floor side outer wall panel 30B. It is designed to be inserted into 36A.

  For this reason, when the water flowing in the hollow portion 38 of the upper floor side outer wall panel 30A reaches the water-stopping accessory 60 due to the intrusion of rainwater or the like, the water is drained to the inside of the hollow portion 38B of the lower floor side outer wall panel 30B. Will be discharged outside the building 10. That is, a drainage path (indicated by an arrow in FIG. 5) in the building 10 can be secured.

  The water stop member 60 will be described in more detail. The member 66 constituting a part of the water stop member 60 includes standing wall portions 66A and 66B facing the inner wall portion 34 of the upper floor side outer wall panel 30A, The horizontal part 66C, 66D facing the lower end surface 76A of the upper floor side outer wall panel 30A is provided. The horizontal portions 66C and 66D are formed to be bent with respect to the standing wall portions 66A and 66B, respectively, and the insertion piece 66G hangs down from the front end portion of the horizontal portion 66D and the side end portion of the horizontal portion 66F. The parapet wall 78 is inserted into the hollow portion 38B.

  For this reason, when the water flowing through the hollow portion 38A of the upper wall 76 or the water that has entered the vertical joint 52 and the horizontal joint 54 reaches the horizontal portion 66F of the accessory 66, as shown in FIG. Run horizontally on the horizontal part 66F. Thereby, this water is discharged into the hollow portion 38B through the insertion piece 66G (arrow A) or discharged to the wall surface 82B side of the parapet frame 82 (arrow B). Moreover, the water which reached | attained the horizontal part 66D of the accessory 66 is discharged | emitted in the hollow part 38B through the insertion piece 66G (arrow C).

  Here, the standing wall portions 66A and 66B are bent with respect to the horizontal portions 66C and 66D, respectively, and are formed so as to face the inner wall portion 34 of the upper floor side outer wall panel 30A. This prevents water that has entered the vertical joints 52 and the horizontal joints 54 from getting over the end portions of the standing wall portions 66A and 66B. With such a configuration, according to the water-stopping member 60 in the present embodiment, the waterproof performance can be improved with a simple configuration. Thereby, the maintenance cost of the building 10 can be reduced, and the user's economic burden can be reduced.

  Incidentally, as shown in FIG. 5, in the balcony 20, the water flowing through the hollow portion 38 </ b> A of the upper wall 76 due to the intrusion of rainwater or the like is discharged to the floor portion 20 </ b> B in the balcony 20, and thus provided in the floor portion 20 </ b> B. The water on the floor 20B can be drained to the outdoor 17 side through the drainage pipe (not shown).

  In this building 10, the penthouse 26 is provided on the top floor, but only the vertical joint 52 is provided on the outer wall 11 of the penthouse 26. For this reason, since the water-stopper 60 shown in FIG. 1 should just be arrange | positioned in the lower part of the penthouse 26, although not shown in figure, compared with the case where the horizontal wall is provided in the outer wall 11 of the penthouse 26, cost reduction is carried out. Can be planned.

(Other embodiments)

  In the present embodiment, as shown in FIG. 6, the wall contact portion 62 of the parapet 28 has been described as the contact portion 92, but not only the wall contact portion 62 but also the waist wall contact portion 94, It is also applicable to the corners and corners 100 (protruding corners 96, entering corners 98, etc.).

  Moreover, in this embodiment, although the water stop function 60 shown in FIG. 1 is formed with resin, it may be formed with a metal or rubber | gum, and what combined these materials may be sufficient. In addition, in the vertical joint 52 and the horizontal joint 54, the outside seal 17 is filled on the outdoor 17 side of the outer wall panel 30, but a regular seal may be used.

  As mentioned above, although one embodiment of the present invention was described, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate, and the gist of the present invention will be described. Of course, various embodiments can be implemented without departing from the scope.

DESCRIPTION OF SYMBOLS 10 Building 11 Outer wall 20 Balconi 20A Waist wall 20B Floor part 22 Exit window 23 Sash 24 Roof Balconi 24A Waist wall 26 Penthouse 28 Parapet 30B Lower floor side outer wall panel 30 Outer wall panel 30A Upper floor side outer wall panel 34 Inner wall part (rear surface)
38 hollow part 38A hollow part (first hollow part)
38B Hollow part (second hollow part)
60 Water-stopping material (drainage member)
62 Wall per unit (per unit)
66 Property (drainage material)
66A Standing wall (drainage member)
66B Standing wall (drainage member)
66C Horizontal part (drainage member)
66D Horizontal part (drainage member)
66G insertion piece (drainage member)
68 Property (drainage member)
68A Standing wall (drainage member)
68C Horizontal part (drainage member)
68D Insertion piece (drainage member)
70 Property (drainage material)
70A Standing wall (drainage member)
70B Horizontal part (drainage member)
76 Upper wall (upper floor outer wall panel)
76A Lower end surface 78 Parapet wall (outer wall panel on the lower floor)
86 Secondary water stop sheet (water stop member)
92 per part 94 per waist wall (per part)
96 Out corner (corner)
98 Corner (corner)
100 corners

Claims (5)

A part of the outer wall, the upper floor side outer wall panel through which the first hollow portion passes along the vertical direction;
A lower part disposed below the upper floor side outer wall panel, constituting a part of the outer wall together with the upper floor side outer wall panel, and penetrating along a vertical direction with a second hollow part communicating with the first hollow part. Floor side outer wall panel,
In at least one of the contact part and the corner part, it is located between the upper floor side outer wall panel and the lower floor side outer wall panel and is located on the back side of the outer wall, and matches the shape of the upper floor side outer wall panel. A drainage member that is disposed directly or opposite to the back surface and lower end surface of the upper floor side outer wall panel via a water blocking member, and the lower end side in the vertical direction is inserted into the second hollow portion,
Building drainage structure. The drainage member is
A standing wall portion disposed opposite to the back surface of the upper floor side outer wall panel;
A horizontal portion that is bent with respect to the standing wall portion and is disposed to face a lower end surface of the upper floor side outer wall panel;
An insertion piece hanging from the tip of the horizontal part and inserted into the second hollow part;
The building drainage structure according to claim 1, comprising:   The building drainage structure according to claim 1 or 2, wherein in the balconi or the veranda, water flowing in the first hollow portion is discharged to a floor portion constituting a part of the balconi or the veranda.   The penthouse is provided on the top floor, only the vertical joint is provided on the outer wall of the penthouse, and the drainage member is disposed at the lower part of the penthouse. The drainage structure of the building. The upper floor side outer wall panel and the lower floor side outer wall panel according to any one of claims 1 to 4,
The lower floor side outer wall panel is arranged in a horizontal joint formed between the upper floor side outer wall panel and the lower floor side outer wall panel, and the lower floor side outer wall panel allows water flowing in the first hollow portion provided in the upper floor side outer wall panel. The drainage member according to any one of claims 1 to 4, wherein the drainage member is discharged into a second hollow portion comprising:
Having a building.

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