JP2007120052A - Building joint drainage member and building equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint drainage member which secures a space for drainage while enhancing the construction workability of a joint material and which enables water intruding into a joint to be surely discharged outdoors, and a building equipped with the joint drainage member. <P>SOLUTION: This joint drainage member comprises a drainage body 10 and an assembly 20. In the drainage body 10, a vertical wall 15, in which a third abutting surface 14 abutting on a back end surface of a primary cut-off material 31 for a vertical joint is formed at the back end of an approximately inverted U-shaped cross-section body with a first abutting surface 11 abutting on the lower end surface of the cut-off material 31 of the exterior wall of the building, is erected on an upper end surface; and a longitudinal drainage passage 12 is provided inside. In this assembly 20 which is continuously provided from a back end of the drainage body 10, a rear wall 26 is erected from a back end of a bottom wall 24; a second abutting surface 23, which abuts on a lower end surface of a secondary cut-off material 32 for the vertical joint, intruding between the vertical wall 15 and the rear wall 26, is provided on the upper end surface of the bottom wall 24; and an anti-backflow wall 21 for inhibiting the backflow of water W is provided from the back end of the bottom wall 24. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention ensures that the water inserted between the vertical joint primary water-stopping material and the vertical joint secondary water-stopping material is drained to the outside without causing the water to flow backward to the indoor side. It is related with the drainage member which can be performed, and a building provided with the same.

A description will be given with reference to FIG. A joint 51 of a building whose outer wall is composed of a siding (panel) 50 is filled with joint material 52 such as a gasket (dry joint material) or a sealing (wet joint material). At this time, the lower end portion of the vertical joint material 52a A drainage space 53 is formed. The drainage space 53 is desirably formed when the vertical joint material 52a is a gasket and the horizontal joint material 52b is a gasket or sealing, and when both are sealing.
JP-A-9-78710

  However, since this drainage space 53 needs to be set to an appropriate size by adjusting the filling of the vertical joint material 52a and the horizontal joint material 52b, there is a problem that the workability of the joint material 52 is deteriorated. is there. In particular, when both the vertical joint material 52a and the horizontal joint material 52b are sealed, there is a tendency that the drainage space 53 is blocked due to variations in construction when the joint material 52 is filled.

  The present invention has been devised in view of these problems, ensuring the drainage space while improving the workability of joint materials, and ensuring that the water that has entered the joints does not flow back into the indoors, but is outdoors. It is an object of the present invention to provide a drainage member that can be drained and a building including the drainage member.

  This will be described with reference to FIGS. The building joint drainage member 1 according to claim 1 is provided directly below the vertical joint primary water-stopping material 31 and the vertical joint secondary water-proofing material 32 inserted into the joint 30 of the building, and the vertical joint primary water-stopping material. 31 is a drainage member that discharges water W that has entered between the vertical joint secondary waterproof material 32 to the outside, and a first contact where the lower end surface of the vertical joint primary waterproof material 31 contacts the upper end surface. A vertical wall 15 is formed on the rear end portion of the inverted U-shaped body having a substantially inverted U-shaped cross section having the contact surface 11 to form the third contact surface 14 with which the rear end surface of the vertical joint primary water blocking material 31 contacts. The drainage body 10 having the drainage passage 12 in the front-rear direction and the drainage body 10 are continuously provided from the rear end of the drainage body 10, and the rear wall 26 is erected from the rear end portion of the bottom wall 24. A second abutting surface with which the lower end surface of the vertical joint secondary water blocking material 32 intruded between the vertical wall 15 and the rear wall 26 abuts on the upper end surface of the wall 24. 3 has, from the rear end of the bottom wall 24, and the water W assembly 20 hanging down set the backflow preventing wall 21 for preventing the backflow of and is characterized in that it consists of.

  The building joint drainage member 1 according to claim 2 is provided directly below the vertical joint primary waterstop 31 and the vertical joint secondary waterstop 32 inserted in the joint 30 of the building, and the vertical joint primary waterstop 31 is a drainage member that discharges water W that has entered between the vertical joint secondary waterproof material 32 to the outside, and a first contact where the lower end surface of the vertical joint primary waterproof material 31 contacts the upper end surface. A vertical wall 15 forming a third contact surface 14 with which the rear end surface of the vertical joint primary water blocking material 31 abuts is erected at the rear end portion of the cylindrical body having the contact surface 11, and the front and rear direction is provided inside. The drainage body 10 having the drainage passage 12 and the rear end of the drainage body 10 and the rear wall 26 are erected from the rear end of the bottom wall 24. A second abutment surface 23 against which a lower end surface of the longitudinal joint secondary water stop material 32 intruded between the longitudinal wall 15 and the rear wall 26 abuts, 24, a backflow prevention wall 21 for blocking the backflow of the water W is suspended from the rear end portion, and a lower end for connecting the lower end rear end portion of the drainage body 10 and the lower end portion of the backflow prevention wall 21 in series. And an assembly 20 provided with a wall 27.

  The building joint drainage member 1 according to claim 3 is the invention according to claim 1 or 2, wherein the drainage passage 12 of the drainage body 10 is formed so that the front end opening 13 faces downward or forwards. It is characterized by.

  The building joint drainage member 1 according to claim 4 is characterized in that, in the invention according to claims 1 to 3, the rear wall 26 and / or the vertical wall 15 are inclined in directions facing each other. Is.

  The building joint drainage member 1 according to claim 5 is a drainage member that is inserted into the joint 30 of the building and is provided below the vertical joint primary waterstop 31 and the vertical joint secondary waterstop 32 in the vertical direction, Provided vertically below the first contact surface 11, the second contact surface 23, and the first and second contact surfaces 11, 23 where the lower end portions of the primary water stop material 31 and the secondary water stop material 32 abut. A standing wall 26 provided on the indoor side of the drainage passage 12 and the second contact surface 23 and abutting the indoor side surface of the secondary water blocking material 32 and extending vertically downward to form the indoor end of the drainage passage 12. 21 and 20 are provided.

  A building according to claim 6 is a building comprising the building joint drainage member according to claims 1 to 5.

  Since the building joint drainage member 1 according to claim 1 is provided immediately below the vertical joint primary waterstop 31 and the vertical joint secondary waterstop 32, the vertical joint primary waterstop 31 and the vertical joint secondary waterstop. The water W that has entered between the materials 32 can be reliably discharged outside through the drainage passage 12 of the drainage body 10 that is a space for drainage. Therefore, the problem that the drainage space is blocked by the joint material as in the prior art can be solved.

  In addition, since the building joint drainage member 1 is provided with the backflow prevention wall 21, it is possible to prevent a situation in which the water W flows back to the back side (indoor side) of the joint 30 and enters the room as it is. be able to.

  Further, the lower end surface of the vertical joint primary water blocking material 31 is brought into contact with the first contact surface 11 provided on the drainage body 10 to perform vertical positioning, and the rear end surface thereof is connected to the third contact surface 14. The vertical joint primary water blocking material 31 can be accurately positioned since the longitudinal joint is positioned in the front-rear direction. Moreover, since the lower end surface of the vertical joint secondary waterproof material 32 is brought into contact with the second contact surface 23 provided on the assembly 20, the vertical joint secondary waterproof material 32 is accurately positioned in the vertical direction. Can be done. As a result, as in the prior art, it is possible to solve the problem that the workability of the joint material is deteriorated in order to secure the drainage space.

  In addition, when forming the vertical joint primary water-stopping material 31 by sealing (wet joint), since they are filled after the joint drainage member 1 is attached, the space for drainage (drainage passage 12) is reduced by the construction variation of the sealing. The problem of plugging does not occur.

  Moreover, when forming the vertical joint secondary waterstop 32 with a gasket (dry joint), the lower end of the vertical joint is sandwiched between the vertical wall 15 and the rear wall 26 of the joint drainage member 1, and the vertical joint secondary The water blocking material 32 can be applied simultaneously with the joint drainage member 1. Therefore, the construction work is facilitated, and the vertical joint secondary water-stopping material 32 and the joint drainage member 1 are not dropped off after construction.

  Since the building joint drainage member 1 according to claim 2 is provided directly below the vertical joint primary waterstop 31 and the vertical joint secondary waterstop 32, the vertical joint primary waterstop 31 and the vertical joint secondary waterstop. The water W that has entered between the material 32 can be reliably discharged to the outside through the drainage passage 12 of the drainage body 10. Thereby, the problem that the drainage space is blocked by the joint material can be solved.

  Further, since the joint drainage member 1 is provided with the backflow prevention wall 21, it is possible to prevent a situation in which the water W flows backward to the back side (inside the room) of the joint 30 and enters the room as it is. Can do.

  Further, the lower end surface of the vertical joint primary water blocking material 31 is brought into contact with the first contact surface 11 provided on the drainage body 10 to perform vertical positioning, and the rear end surface thereof is connected to the third contact surface 14. The vertical joint primary water blocking material 31 can be accurately positioned since the longitudinal joint is positioned in the front-rear direction. Moreover, since the lower end surface of the vertical joint secondary waterproof material 32 is brought into contact with the second contact surface 23 provided on the bottom wall 24 of the assembly 20, the vertical direction of the vertical joint secondary waterproof material 32 Can be accurately positioned. As a result, it is possible to solve the problem that the workability of the joint material is deteriorated in order to secure the drainage space as in the prior art.

  In addition, since the front end surface of the lower end part of the vertical joint secondary waterproof material 32 contacts the vertical wall 15 and the rear end surface contacts the rear wall 26, positioning in the front-rear direction is performed accurately.

  Moreover, when forming the vertical joint secondary waterstop 32 with a gasket (dry joint), the lower end of the vertical joint is sandwiched between the vertical wall 15 and the rear wall 26 of the joint drainage member 1, and the vertical joint secondary The water blocking material 32 can be applied simultaneously with the joint drainage member 1. Therefore, the construction work is facilitated, and the vertical joint secondary water-stopping material 32 and the joint drainage member 1 are not dropped off after construction.

  In addition, when the lower end wall 27 is provided, the structural strength of the assembly 20 can be increased, and the lower end portion of the vertical joint secondary waterstop 32 can be strongly held in a more stable posture, and can be dropped. Can be further prevented in advance.

  In the building joint drainage member 1 according to claim 3, the water W that has entered between the vertical joint primary water-stopping material 31 and the vertical joint secondary water-stopping material 32 is obtained in the same manner as in the inventions according to claims 1 and 2. In addition to being able to discharge reliably without causing a back flow, positioning of the joint material is performed, so that workability can be improved.

  Further, since the drainage passage 12 of the drainage body 10 is formed so that the front end opening 13 faces downward or forward, the water W can be discharged well outdoors. Further, when the front end opening 13 is formed downward, the front end opening 13 is difficult to be seen, so that the appearance is excellent and the water W can be guided toward the ground.

  In the building joint drainage member 1 according to claim 4, the rear wall 26 and / or the vertical wall 15 or both of them are inclined in directions facing each other, and therefore, the distance between the rear wall 26 and the vertical wall 15. Can be made smaller at the upper portion thereof, whereby the vertical joint secondary waterstop material 32 can be more strongly held. As a result, it is possible to prevent the dropout between them.

  Since the invention according to claim 5 is provided immediately below the vertical joint primary waterstop 31 and the vertical joint secondary waterstop 32, the vertical joint primary waterstop 31 and the vertical joint secondary waterstop 32 are provided. Water W that has entered between the two can be reliably discharged to the outside through the drainage passage 12 of the drainage body 10.

  Further, the lower end surface of the vertical joint primary water blocking material 31 is brought into contact with the first contact surface 11 provided on the drainage body 10 to perform vertical positioning, and the rear end surface thereof is used as the second contact surface 23. Positioning in the front-rear direction in contact with each other makes it possible to accurately position the vertical joint primary water blocking material 31. Furthermore, since the lower end surface of the vertical joint secondary waterproof material 32 is brought into contact with the second contact surface 23 provided on the bottom wall 24 of the assembly 20, the vertical joint secondary waterproof material 32 in the vertical direction. Can be accurately positioned. Thereby, the construction work of the water stop material can be performed accurately and easily while ensuring the space for drainage (drainage passage 12).

  In addition, since the front end surface of the lower end part of the vertical joint secondary waterproof material 32 contacts the vertical wall 15 and the rear end surface contacts the rear wall 26, positioning in the front-rear direction is performed accurately.

  Moreover, since the lower end wall 27 is provided in the assembly 20, the structural strength of the assembly 20 is increased, and the lower end portion of the vertical joint secondary water-stopping material 32 is more firmly held, and the joint drainage is performed. The member 1 and the vertical joint secondary waterproofing material 32 are reliably prevented from separating from each other.

  The invention according to claim 6 includes the water that has entered between the vertical joint primary water stop member 31 and the vertical joint secondary water stop member 32 by providing the building joint drainage member according to any one of claims 1 to 5. It is a building that drains W outdoors and does not flow backwards indoors.

  A first embodiment of a joint drainage member 1 according to the present invention is shown in FIGS. This is provided directly below the vertical joint primary water-proofing material 31 and the vertical joint secondary water-proofing material 32, which are dry joint materials inserted into the joints 30 of the building whose outer walls are siding, and the vertical joint primary water-proofing material. Water W that has entered between 31 and the vertical joint secondary waterproofing material 32 is discharged to the outside, and includes a drainage body 10 and an assembly 20. The joint drainage member 1 is formed of a hard resin.

  The drainage body 10 has the vertical joint at the rear end portion of the inverted U-shaped body having a substantially inverted U-shaped cross section having the first contact surface 11 with which the lower end surface of the vertical joint primary water blocking material 31 contacts the upper end surface. The vertical wall 15 which forms the 3rd contact surface 14 with which the rear-end surface of the primary water stop material 31 contact | abuts is erected, and has the drainage channel 12 of the front-back direction inside.

  The assembly 20 is provided continuously from the rear end of the drainage body 10, and a rear wall 26 is erected from the rear end of the bottom wall 24 provided at the same height as the first contact surface 11. Is provided with a second abutment surface 23 against which the lower end surface of the vertical joint secondary water blocking material 32 intruded between the vertical wall 15 and the rear wall 26 abuts. Further, a backflow prevention wall 21 for preventing the backflow of the water W is suspended from the rear end portion of the bottom wall 24.

  In the joint drainage member 1 according to the present embodiment, the water W that has entered between the vertical joint primary waterproofing material 31 and the vertical joint secondary waterproofing material 32 drops to the lower part of the bottom wall 24, and from there the drainage passage 12. Is discharged from the front end opening 13 to the outside. Thereby, the space (drainage passage 12) for discharging the invading water W can be secured, and the water W can be reliably discharged.

  Further, the backflow prevention wall 21 prevents the water W from flowing back and entering the back side (inside the room) of the joint 30, so that the water W can be reliably prevented from entering the room.

  Moreover, since the lower end surface of the vertical joint primary waterstop 31 is brought into contact with the first contact surface 11 provided in the drainage body 10 and the rear end surface thereof is brought into contact with the third contact surface 14, the vertical joint primary seal The water blocking material 31 can be positioned accurately. Moreover, since the lower end surface of the vertical joint secondary waterstop material 32 is made to contact | abut to the 2nd contact surface 23 provided in the assembly | attachment body 20, the positioning of the said vertical joint secondary waterstop material 32 is performed correctly. Can do. Accordingly, it is possible to easily perform the construction work of the water-stopping material while ensuring the space for drainage (drainage passage 12) accurately.

  The joint drainage member 1 in the first embodiment is provided for the first floor of the first siding 33 and the first frame 34 provided for the first floor of the building and for the second floor as shown in FIGS. 2 to 5. It is provided between the second siding 35 and the lower end surface of the second frame 36.

  The joint drainage member 1 is provided in a recess 42 formed in the substrate 41 of the cross joint material 40 provided on the upper end surfaces of the first siding 33 and the first frame 34. If the recess 42 is not formed in the cross joint material 40, it can be provided on the substrate 41. At the rear end portion of the cross joint material 40, a column 43 serving as a vertical joint tertiary water stop material is erected. Moreover, the cross joint material 40 and the cross joint secondary water stop material 39 set a cross joint secondary water stop structure.

  A horizontal joint primary waterproof material 38 is provided on the left and right sides of the drainage body 10, and a horizontal joint secondary waterproof material 39 is provided on the left and right sides of the cross joint material 40. A rubber sheet 44 is laid under the cross joint material 40. A waterproof sheet 37 is provided between the siding and the frame.

  In addition, when comprising the vertical joint primary water stop material 31 by sealing (wet joint), since it fills after attaching the joint drainage member 1, the drainage passage 12 is not obstruct | occluded by the said sealing.

  Further, the drainage passage 12 is formed so that the front end opening 13 faces downward, thereby making the front end opening 13 difficult to be seen and improving the appearance, and draining the water W right below. I can do it.

  Furthermore, in this embodiment, the rear wall 26 is inclined toward the vertical wall 15 side. Thereby, the space | interval between the said rear wall 26 and the vertical wall 15 is made small in the upper part, the vertical joint secondary water stop material 32 is hold | maintained more strongly, and it prevents that both fall out mutually. is doing. Instead of the rear wall 26, the vertical wall 15 can be inclined toward the rear wall 26, and both the rear wall 26 and the vertical wall 15 can be inclined in opposite directions. .

11 and 12 show a second embodiment of the joint drainage member 1 according to the present invention.
This is provided directly below the vertical joint primary waterproof material 31 and the vertical joint secondary waterproof material 32 inserted into the joint 30 of the building, and the vertical joint primary waterproof material 31 and the vertical joint secondary waterproof material 32, The water W that has entered during the period is discharged to the outdoors, and is constituted by the drainage body 10 and the assembly body 20.

  The drainage body 10 has a first abutting surface 11 with which a lower end surface of the vertical joint primary water blocking material 31 abuts on an upper end surface of a cylindrical body having a square cylinder shape in cross section, and a vertical end of the drainage body 10 on the vertical end. The vertical wall 15 which forms the 1st contact surface 14 with which the rear-end surface of the joint primary water stop material 31 contact | abuts is erected. Moreover, it has the drainage channel | path 12 in the inside, and the said drainage channel | path 12 is formed so that the front-end opening part 13 may become facing forward.

  In addition, the drainage body 10 is not limited to a cross-sectional square cylinder shape, For example, it can also be set as a cross-sectional cylinder shape (not shown).

  The assembled body 20 is provided continuously from the rear end of the drainage body 10, and the rear wall 26 having the same height as the vertical wall 15 is raised from the bottom wall 24 provided at the same height as the first contact surface 11. Has been established. Further, the upper end surface of the bottom wall 24 has a second abutting surface 23 with which the lower end surface of the vertical joint secondary water stop material 32 that enters between the vertical wall 15 and the rear wall 26 abuts. A lower end wall 27 that connects the backflow prevention wall 21 and the lower end rear end of the drainage body 10 is provided below the bottom wall 24.

  Since the joint drainage member 1 in the present embodiment is provided directly below the vertical joint primary waterproof material 31 and the vertical joint secondary waterproof material 32, the vertical joint primary waterproof material 31 and the vertical joint secondary waterproof material 32 are provided. The water W that has entered the space 32 can be reliably discharged to the outside through the drainage passage 12 of the drainage body 10.

  Further, the lower end surface of the vertical joint primary waterstop 31 is brought into contact with the first contact surface 11 provided on the drainage body 10 to perform vertical positioning, and the rear end surface thereof is used as the third contact surface 23. Positioning in the front-rear direction in contact with each other makes it possible to accurately position the vertical joint primary water blocking material 31. Furthermore, since the lower end surface of the vertical joint secondary waterproof material 32 is brought into contact with the second contact surface 23 provided on the bottom wall 24 of the assembly 20, the vertical joint secondary waterproof material 32 in the vertical direction. Can be accurately positioned. Thereby, the construction work of the water stop material can be performed accurately and easily while ensuring the space for drainage (drainage passage 12).

  In addition, since the front end surface of the lower end part of the vertical joint secondary waterproof material 32 contacts the vertical wall 15 and the rear end surface contacts the rear wall 26, positioning in the front-rear direction is performed accurately.

  Further, when the lower end wall 27 is provided on the assembly 20, the structural strength of the assembly 20 is increased, and the lower end portion of the vertical joint secondary water-stopping material 32 is more firmly held, so that the joint drainage member 1 and the vertical joint secondary waterproofing material 32 are reliably prevented from separating from each other.

It is a front view which shows the space for drainage of the building outer wall which concerns on a prior art example. It is a disassembled perspective view which shows the state before the assembly | attachment of the joint drainage member of the building outer wall which concerns on 1st embodiment of this invention. It is a front view which shows the state after the assembly | attachment of the joint drainage member of the building outer wall which concerns on 1st embodiment of this invention. It is a top view which shows the state after the assembly | attachment of the joint drainage member of the building outer wall which concerns on 1st embodiment of this invention. It is a side view which shows the state after the assembly | attachment of the joint drainage member of the building outer wall which concerns on 1st embodiment of this invention. It is a perspective view which shows the joint drainage member which concerns on 1st embodiment of this invention. It is a front view of the joint drainage member shown in FIG. It is a top view of the joint drainage member shown in FIG. It is a side view of the joint drainage member shown in FIG. It is the XX sectional view taken on the line of FIG. It is a perspective view which shows the joint drainage member which concerns on 2nd embodiment of this invention. It is the YY sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joint drainage member 10 Drainage body 11 First contact surface 12 Drainage passage 13 Front end opening 14 Third contact surface 15 Vertical wall 20 Assembly 21 Backflow prevention wall 23 Second contact surface 24 Bottom wall 26 Rear wall 27 Lower end wall 30 Joint 30a Vertical joint 30b Horizontal joint 31 Vertical joint primary waterproofing material 32 Vertical joint secondary waterproofing material 33 First siding 34 First frame 35 Second siding 36 Second frame 37 Waterproof sheet 38 Horizontal joint primary waterproofing Material 39 Horizontal joint secondary waterproofing material 40 Cross joint material 41 Substrate 42 Recess 43 Vertical joint tertiary waterproofing pillar 44 Rubber sheet 50 Siding 51 Joint 52 Joint material 52a Vertical joint material 52b Horizontal joint material 53 Drainage space W Water

Claims (6)

  The vertical joint primary waterproof material and the vertical joint secondary water stop, which are provided directly below the vertical joint primary waterproof material (31) and the vertical joint secondary waterproof material (32) inserted in the joint (30) of the building. A drainage member that discharges water (W) that has entered between materials to the outside, and has a first abutment surface (11) with which the lower end surface of the vertical joint primary waterstop material abuts on the upper end surface A vertical wall (15) that forms a third contact surface (14) with which the rear end surface of the vertical joint primary waterstop material abuts is erected at the rear end portion of the inverted U-shaped body having a substantially inverted U shape, In addition, a drainage body (10) having a drainage passage (12) in the front-rear direction, and a rear wall (26) standing from the rear end of the bottom wall (24) are connected from the rear end of the drainage body. And a second abutting surface (23) with which the lower end surface of the vertical joint secondary waterstop material intruded between the vertical wall and the rear wall abuts on the upper end surface of the bottom wall, Rear end of bottom wall Et al., Building joint drainage member assembly body hanging down set the backflow prevention wall (21) to prevent backflow of the water (20), characterized in that it consists to.   The vertical joint primary waterproof material and the vertical joint secondary water stop, which are provided directly below the vertical joint primary waterproof material (31) and the vertical joint secondary waterproof material (32) inserted in the joint (30) of the building. A drainage member that discharges water (W) that has entered between the material and the outside, and has a first contact surface (11) with which the lower end surface of the vertical joint primary water blocking material contacts the upper end surface A vertical wall (15) is erected on the rear end of the rod-like body to form a third abutting surface (14) with which the rear end surface of the vertical joint primary water-stopping material abuts. A drainage body (10) having a passage (12) and a rear wall (26) standing from the rear end of the bottom wall (24) are provided continuously from the rear end of the drainage body. The upper end surface has a second contact surface (23) with which the lower end surface of the vertical joint secondary waterstop material intruded between the vertical wall and the rear wall contacts, and the rear end portion of the bottom wall From the reverse of the water And a backflow prevention wall (21) that prevents the backflow, and a lower end wall (27) that connects the lower end rear end of the drainage body and the lower end of the backflow prevention wall (21). A building joint drainage member comprising the body (20).   The building joint drainage member according to claim 1 or 2, wherein the drainage passage (12) of the drainage body (10) is formed such that a front end opening (13) thereof faces downward or forwards.   The building joint drainage member according to any one of claims 1 to 3, wherein the rear wall (26) and / or the vertical wall (15) are inclined in directions opposite to each other.   A drainage member inserted into the joint (30) of the building and provided vertically below the vertical joint primary waterstop (31) and the vertical joint secondary waterstop (32), the primary waterstop (31) And the first contact surface (11), the second contact surface (23), and the first and second contact surfaces (11, 23), which are in contact with the lower end of the secondary water blocking material (32), vertically below A drainage passage (12) provided on the inner side of the second abutment surface (23) and a side surface on the indoor side of the secondary water blocking material (32), and extended downward in the vertical direction. The building joint drainage member is provided with a standing wall (26, 21, 20) that forms the indoor side end of). A building comprising the joint joint drainage member according to claim 1.

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