JP2020016146A - Mount method of foundation inspection port and building structure - Google Patents

Abstract

To allow a basic inspection port to be mounted on a foundation easily.SOLUTION: A foundation inspection port 10 is used to be mounted on an opening 2 formed in a foundation 1 and has a frame 11 having a frame body 12 disposed in the opening 2 and a flange 13 formed at one end of the frame body 12 and a lid body 21 capable of being fit with an opening 15 of the frame 11. The flange 13 faces a peripheral rim of the opening 2 of the foundation 1 in a state where the frame body 12 is disposed in the opening 2 of the foundation 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for mounting a foundation inspection port of a building and a building structure.

  2. Description of the Related Art In recent years, as the tendency of houses to save energy has increased, in order to improve the heat insulation performance of bathroom compartments and the like, a heat insulating material is provided on the entire inner surface of a foundation that divides the underfloor portion of the bathroom and the like. However, it is necessary to provide an opening (penetration port or inspection port) for inspecting the underfloor portion on the foundation, and the opening portion cannot be provided with a heat insulating material.

  Therefore, in order to block ventilation through the opening provided in the foundation and to provide heat insulation, a foundation inspection opening capable of attaching and detaching a heat-insulating lid to the opening of the frame fixed to the opening of the foundation has been proposed. (For example, see Patent Document 1).

Japanese Utility Model Registration No. 3078345

  However, the basic inspection opening described in Patent Document 1 is such that the frame of the basic inspection opening is arranged in a mold and the frame is embedded in the foundation. In such a base inspection port, since it is necessary to form the foundation by hitting the foundation concrete after positioning the frame of the foundation inspection port in the mold in advance, the work at the time of foundation formation is very troublesome, A problem arises that the foundation inspection opening cannot be easily attached to the foundation. At present, there is no known retrofit type base inspection port installed after forming the foundation.

  Accordingly, an object of the present invention is to provide a method of mounting a base inspection port and a building structure that can enhance the heat insulation performance under the floor at a retrofit type basic inspection port.

  A method for mounting a foundation inspection port according to the present invention includes: a foundation forming step of forming a foundation by opening a part of a foundation defining a lower space of a bathroom; and a foundation inspection port in the opening formed in the foundation. A frame disposing step of disposing a frame, and a filling step of filling a foam synthetic resin between the opening of the base and the frame.

  According to this, the heat insulation performance under the floor can be enhanced in the retrofit type basic inspection port. Moreover, it becomes possible to attach a foundation inspection port to the opening formed at the time of foundation formation. For this reason, it is not necessary to embed the frame of the basic inspection port in the foundation when forming the foundation, and the basic inspection port can be easily attached to the foundation.

  In the present invention, the frame body has a flange formed so as to protrude from an outer peripheral side surface, and in the frame body arranging step, the flange of the frame body may be opposed to an opening peripheral portion of the foundation. preferable. Accordingly, in the frame disposing step, the flange of the frame is opposed to the peripheral edge of the opening of the foundation, so that the allowable range of the opening dimension of the foundation is widened, and the opening is easily formed on the foundation.

  In the present invention, the frame body has a heat insulator covering the outer peripheral side surface of the frame body over the entire circumference, and a heat insulating material installation step of providing a heat insulating material on the inner side surface of the foundation before the filling step. It is preferable to further provide. Thereby, the heat insulator of the frame and the heat insulator of the base can be continuously connected by the foamed synthetic resin, and the heat insulating performance can be enhanced.

  In the present invention, it is preferable that the method further includes a lid attaching step of attaching the lid having heat insulating properties to the frame so as to close an opening of the frame.

  Further, in the present invention, an uneven surface is formed on the facing surface of the flange facing the foundation, and in the filling step, the foam synthetic resin is filled between the facing surface of the flange and the foundation. Is preferred. Thereby, the frame can be effectively adhered to the base.

  The building structure of the present invention has a foundation having an opening formed therein, a base body attached to the opening, a frame body having an opening inside the opening, and a lid capable of being fitted into the opening. Wherein the space between the opening and the frame is filled with a foamed synthetic resin.

  According to this, the heat insulation performance under the floor can be enhanced in the retrofit type basic inspection port.

  Further, in the present invention, it is preferable that the base further includes a base disposed on the base and the base inspection port, and the foamed synthetic resin is also filled between the base and the frame. Thereby, the heat insulating property is further improved.

  Further, in the present invention, it is preferable to further include a foundation packing disposed between the foundation and the base.

  Further, in the present invention, it is preferable that a heat insulating material is further provided so as to cover one side surface of the foundation, and the foamed synthetic resin is preferably filled between the frame and the heat insulating material. . Thereby, the heat insulation performance under the floor at the retrofit type basic inspection opening can be effectively improved.

  Further, in the present invention, the frame has a flange formed so as to protrude from an outer peripheral side surface, and is mounted in the opening so that the flange faces an opening peripheral portion of the foundation. It is preferable that the foam synthetic resin is filled between the flange, the opening, and the outer peripheral side surface.

  Further, in the present invention, it is preferable that a plurality of irregularities are formed on a facing surface of the flange facing the base. This increases the bonding area between the flange and the synthetic foam resin, so that the frame can be effectively bonded to the base after the formation of the base.

  ADVANTAGE OF THE INVENTION According to the mounting method of a basic inspection port of this invention, and a building structure, the underfloor insulation performance can be improved in a retrofit type basic inspection port.

It is a partial perspective view of the building structure to which the basic inspection opening concerning one embodiment of the present invention was attached. (A) is a front view of the building structure shown in FIG. 1, (b) is a plan view of the building structure shown in FIG. FIG. 3 is a sectional view taken along the line III-III in FIG. (A) is a perspective view of the frame shown in FIG. 1, (b) is an exploded perspective view of the frame. It is a front view of the frame body shown in FIG. 6A is a perspective view of the lid shown in FIG. 1, and FIG. 6B is a perspective view of the lid shown in FIG. FIG. 2A is a perspective view of the foundation shown in FIG. 1, and FIG. 2B is a perspective view showing a situation where a foundation inspection port is attached to an opening of the foundation.

  Hereinafter, a building structure 100 to which a basic inspection port 100 according to an embodiment of the present invention is attached will be described below with reference to FIG.

  As shown in FIGS. 1 and 2, the building structure 100 according to the present embodiment includes a foundation 1 (for example, a cloth foundation) that is long in the longitudinal direction A and an opening 2 formed in the foundation 1 (FIG. 7A). ), A foundation 3 disposed on the foundation 1 and the foundation inspection port 10, a plurality of foundation packings 4 disposed between the foundation 3 and the foundation 1, and an opening. 2 and a foamed synthetic resin 5 filled between the base 3 and the frame 11 of the foundation inspection opening 10. The building structure 100 shown in FIG. 1 shows a part of a basic structure that defines a space below a bathroom using a unit bath, and a width direction B of a rising portion 1b of the base 1 (a direction orthogonal to a longitudinal direction A). ), The left side in the figure is the inside and the right side is the outside of the rising portion 1b. Therefore, in the following description, one side in the width direction B may be referred to as the outside, and the other may be referred to as the inside.

  The foundation 1 is composed of a footing 1a and a rising portion 1b erected upward from the footing 1a. The base 3 and the foundation packing 4 are fixed on the rising portion 1b by anchor bolts, square washers, and nuts (both not shown) implanted in the foundation 1. A heat insulating material 6 is provided on the entire inner side surface 1c of the rising portion 1b. The heat insulating material 6 may be provided on the outer surface 1d of the rising portion 1b. As shown in FIG. 7A, the rising portion 1b is formed with an opening 2 in which a part in the longitudinal direction A is not provided, so that the rising portions 1b are separated from each other in the longitudinal direction A. Is divided into

  The basic inspection opening 10 has a frame 11 and a lid 21 as shown in FIGS. As shown in FIGS. 3 and 4, the frame 11 has a frame main body 12 that can be arranged in the opening 2 of the foundation 1, a flange 13, and a heat insulator 14. As shown in FIGS. 2 to 4, the frame body 12 has a rectangular tube shape, and has a width in the longitudinal direction A and a height in the vertical direction C slightly smaller than the opening 2. Further, as shown in FIG. 7B, the frame body 12 has an opening 15 on the inner side in the radial direction than the opening 2 in a state where the frame main body 12 is disposed in the opening 2. The opening direction of the opening 15 is parallel to the width direction B of the rising portion 1 b of the foundation 1.

  The frame body 12 is made of a synthetic resin, and has an inner peripheral surface 16 that forms the opening 15 as shown in FIG. The opening 15 is configured such that the first opening 15a and the second opening 15b communicate with each other. The second opening 15b is arranged on the inner side in the width direction B than the first opening 15a, and has a slightly smaller opening diameter than the first opening 15.

  As shown in FIGS. 4 and 5, the inner peripheral surface 16 includes a first inner peripheral surface 16a that forms the first opening 15a, a second inner peripheral surface 16b that forms the second opening 15b, and a first inner peripheral surface 16b. It has a step surface 16c connecting the inner peripheral surface 16a and the second inner peripheral surface 16b. The step surface 16c is a surface that stands upright so as to face the width direction B, and is formed in an inverted U-shape as shown in FIG. The lower surface of the first inner peripheral surface 16a and the second inner peripheral surface 16b are continuously connected along the width direction B.

  As shown in FIG. 5, a packing 19 made of an elastic material such as rubber is attached to the inner peripheral surface 16. The packing 19 includes a first packing 19a and a second packing 19b. The first packing 19a is continuously attached to an upper portion extending along the longitudinal direction A of the step surface 16c and two left and right portions extending along the vertical direction C, and has an inverted U-shape. The second packing 19b is attached to the lower surface 16a1, and extends along the longitudinal direction A. Further, both ends of the second packing 19b in the longitudinal direction A are disposed near both ends of the first packing 19a. By providing such a packing 19, when the opening 15 is closed by the lid 21, the gap between the lid 21 and the frame 11 is almost entirely filled in the circumferential direction. . Thereby, the airtightness between the frame 11 and the lid 21 is further improved. When the lid 21 closes the opening 15 of the frame 11, the first packing 19a is provided on the surface facing the step surface 16c of the lid 21, and the second packing 19b is provided on the lower surface 21a of the lid 21. May be provided. Further, the packing 19 may be provided on both the frame 11 and the lid 21. Also in these, the airtightness between the frame 11 and the lid 21 is further improved.

  As shown in FIG. 4, the frame main body 12 has two concave portions (first engagement portions) 17 formed on the lower surface 16a1 of the first inner peripheral surface 16a, and as shown in FIG. And a convex portion (second engagement portion) 18 formed on the upper surface 16a2 of the peripheral surface 16a. The two concave portions 17 are arranged near both ends of the lower surface 16a1 in the longitudinal direction A, and open upward. That is, the two concave portions 17 are arranged apart from each other along the longitudinal direction A (the extending direction of the foundation 1). The protrusion 18 is formed so as to protrude downward from the upper surface 16a2 and extend along the longitudinal direction A, as shown in FIGS. The projection 18 is arranged at the center of the upper surface 16a2 in the longitudinal direction A. That is, the protrusion 18 is disposed at the center of the opening 15 in the longitudinal direction A.

  As shown in FIG. 4B, a plurality of ribs 12b are formed on the outer peripheral side surface 12a of the frame body 12. Thereby, the strength of the frame main body 12 is improved.

  The flange 13 is made of synthetic resin, and as shown in FIG. 4, protrudes from the outer peripheral side surface 12 a of the frame main body 12 in the opening direction of the frame main body 12, that is, at one end (outer end) in the width direction B. Is formed. The flange 13 in the present embodiment has an inverted U-shape, and is integrally formed on the upper side and the left and right sides of the frame body 12. In addition, the flange 13 may be formed, for example, in an annular shape, a U-shape, on the left and right sides of the frame main body 12 according to the shape of the opening 2, or they may be formed continuously or discontinuously. Can be changed as appropriate. Further, the flange 13 may be formed in the middle of the frame body 12 in the width direction B.

  In addition, as shown in FIGS. 1 to 3, the flange 13 is a rising portion 1 b of the foundation 1 in a state where the frame main body 12 is arranged in the opening 2 and can face the peripheral edge of the opening 2. Is formed. As shown in FIG. 4B, the flange 13 has a plurality of ribs 13b formed on a facing surface 13a facing the rising portion 1b. Thereby, the strength of the flange 13 is improved. Further, a convex portion 13c extending in an inverted U-shape is formed on the facing surface 13a. The protruding portion 13c is formed by recessing the surface of the flange 13 on the side opposite to the opposing surface 13a so as to partially protrude from the opposing surface 13a. The width of the tip surface 13d of the projection 13c is larger than the width of the tip surface of the rib 13b. In addition, the distal end surface 13d of the convex portion 13c and the distal end surface of the rib 13b are arranged substantially in the same plane. Therefore, when the frame 11 is attached to the opening 2, the tip surface 13 d of the projection 13 c and the tip surface of the rib 13 b can be brought into contact with the rising portion 1 b, and the frame 11 is stably disposed in the opening 2. Can be done. At this time, when the adhesive for temporary fixing is applied to the portion of the rising portion 1b facing the flange 13, the front end surface 13d is formed wider than the rib 13b. It can be effectively bonded. Furthermore, since the plurality of ribs 13b are formed on the facing surface 13a, the area of adhesion with the temporary fixing adhesive increases. Therefore, the frame 11 can be more effectively adhered to the base 11.

  The heat insulator 14 is made of a foamed synthetic resin (for example, styrene foam), and is formed in a square tube shape as shown in FIG. The heat insulator 14 is attached to the outer peripheral side surface 12a of the frame main body 12, and covers the entire upper surface of the outer peripheral side surface 12a and the other end (inner end) in the width direction B of the outer peripheral side surface 12a over the entire circumference. Covering. Thereby, it becomes possible to improve the heat insulation of the basic inspection port 10. For this reason, the insulation performance under the floor at the retrofit type basic inspection port 10 can be enhanced. Furthermore, since the heat insulator 14 is attached to the outer peripheral side surface 12a of the frame main body 12 so that the ribs 12b of the left and right outer peripheral side surfaces 12a of the frame main body 12 are exposed, the frame body 11 is attached to the opening 2 of the foundation 1 The adhesion between the foamed synthetic resin 5 filled in the gap between the opening 11 and the opening 2 can be improved.

  The lid 21 is made of a foamed synthetic resin (for example, styrofoam) and has heat insulation. As shown in FIGS. 1 to 3, the lid 21 is formed in a substantially square plate shape that can be fitted into the opening 15. As shown in FIG. 6A, the lid body 21 has two convex portions (first engaged portions) 22 protruding downward from the lower surface 21a. These two convex portions 22 are formed in a shape and position to be fitted and engaged with the two concave portions 17 when the lid 21 is disposed in the opening 15. That is, the two convex portions 22 are also arranged apart from each other along the longitudinal direction A.

  As shown in FIGS. 1 to 3, the lid 21 has a grip portion 23 protruding from an outer surface 21 c exposed to the outside when the lid 21 is attached to the frame 11. As shown in FIG. 6A, the grip 23 is disposed slightly below the upper end of the lid 21 at the center in the longitudinal direction A, and extends along the longitudinal direction A.

  When the two convex portions 22 of the lid 21 are fitted into the two concave portions 17 at the upper end of the lid 21 and the upper end of the lid 21 is pushed inward along the width direction B, a frame is formed. A lock member 25 is provided to lock the lid 21 by engaging with the projection 18 of the body 11. The lock member 25 is made of a synthetic resin, and is arranged at the center of the lid 21 in the longitudinal direction A. The lock member 25 includes an attachment portion 26 attached to an upper end portion of the lid 21, an elastic support portion 27 that is bent and extends from the attachment portion 26, and a convex portion formed at a tip of a corner of the elastic support portion 27. (Second engaged portion) 28.

  As shown in FIG. 6A, the elastic support portion 27 extends outward from the attachment portion 26 along the width direction B above the grip portion 23, then bends downward once, and then extends in the width direction B. It is formed to extend along the outside. The protruding portion 28 is formed to extend along the longitudinal direction A at the upper end of the corner of the portion bent downwardly of the elastic support portion 27.

  When closing the opening 15 with such a lid 21, the two projections 22 of the lid 21 are fitted into the two recesses 17, and the upper end of the lid 21 is moved inward along the width direction B. , The elastic support portion 27 is once bent downward so that the convex portion 28 gets over the convex portion 18 and then returns. That is, the elastic support portion 27 is elastically deformable so that the protrusion 28 is engaged with the protrusion 18. Thereby, the convex part 28 and the convex part 18 are engaged, and the lid 21 is locked to the frame 11. At this time, since the frame 11 has two concave portions 17 and one convex portion 18, and the lid 21 has two convex portions 22 and one convex portion 28, the lid 21 is connected to the opening of the frame 11. 15 can be engaged and attached at three places. For this reason, the lid 21 can be fixed to the frame 11 without looseness, and the airtightness between the frame 11 and the lid 21 is improved. On the other hand, when the distal end 27a of the elastic support portion 27 is pressed downward so as to approach the grip portion 23 in a state where the lid 21 is locked to the frame 11, the engagement between the convex portion 28 and the convex portion 18 is released. As a result, the elastic support portion 27 bends downward, and the convex portion 28 moves downward. Then, in a state where the projection 28 and the projection 18 are disengaged from each other, the grip 21 is gripped and the upper end of the lid 21 is pulled outward in the width direction B so that the lid 21 is framed. It can be removed from the body 21.

  Next, a method of attaching the foundation inspection opening 10 to the foundation 1 will be described below with reference to FIG.

  As shown in FIG. 7A, first, a foundation 1 having a rising portion 1b having an opening 2 formed at an intermediate position in the longitudinal direction A is formed. Thereafter, as shown in FIG. 7B, a heat insulating material 6 is provided on the entire inner side surface 1c of the rising portion 1b. In addition, the heat insulating material 6 may be provided by spraying urethane foam with a spray, or may be provided by attaching a styrene foam plate. Further, the heat insulating material 6 may be provided after the basic inspection port 10 is attached to the opening 2.

  Next, the frame 11 of the foundation inspection port 10 is set in the opening 2 formed in the rising portion 1b of the base 1 (frame setting step). At this time, the frame main body 12 is disposed in the opening 2 while the distal end surface 13d of the flange 13 and the distal end surfaces of the plurality of ribs 13b are in contact with the outer side surface 1d of the rising portion 1b. That is, the flange 13 of the frame 11 is opposed to the peripheral edge of the opening 2 of the rising portion 1b. At this time, the frame 11 may be installed in the opening 2 after applying a temporary fixing adhesive to the outer surface 1 d of the rising portion 1 b and the peripheral edge of the opening 2. In this case, the flange 13 of the frame 11 is effectively bonded to the rising portion 1b via the temporary fixing adhesive, and the displacement of the frame 11 can be suppressed. Thereafter, the lid 21 is attached to the frame 11 so that the opening 15 of the frame 11 is closed by the lid 21. The frame 11 may be installed in the opening 2 with the lid 21 attached to the frame 11 so that the opening 15 of the frame 11 is closed by the lid 21.

  Next, the synthetic resin 5 (for example, urethane foam) is filled between the opening 2 of the base 1 and the frame 11 and the upper surface of the frame 11 (the portion facing the base 3) by spraying (filling urethane). Process). Thereby, the heat insulating material 6 provided on the rising portion 1 b of the foundation 1, the heat insulating body 14 and the lid 21 of the frame 11 can be continuously connected by the foamed synthetic resin 5. That is, since the entire circumference of the underfloor section can be covered with the heat insulating material, the heat insulation performance under the floor at the retrofit type basic inspection port 10 can be enhanced. The space between the flange 13 and the outer surface 1d of the rising portion 1b may be filled with the foamed synthetic resin 5. In this case, since the plurality of ribs 13 b are formed on the flange 13, the bonding area with the foamed synthetic resin 5 increases, so that the frame 11 can be more effectively bonded to the foundation 1. Thus, the attachment of the foundation inspection port 10 to the opening 2 of the foundation 1 is completed. Thereafter, by fixing the base packing 4 and the base 3 on the rising portion 1b, the building structure 100 shown in FIG. 1 is completed.

  As described above, according to the basic inspection port 10 and the method of attaching the same, the basic inspection port 10 can be retrofitted to the opening 2 formed at the time of forming the foundation. For this reason, it is not necessary to embed the frame 11 of the basic inspection port 10 in the rising portion 1b of the foundation 1 at the time of forming the foundation, and the basic inspection port 10 can be easily attached to the foundation 1.

  Further, since the frame 11 has the flange 13, even when the opening 2 formed in the foundation 1 is slightly larger than the frame main body 12, the flange 2 is not provided when the base inspection port 10 is attached to the opening 2 of the foundation 1. 13 can be opposed to the peripheral edge of the opening 2 of the foundation 1. That is, the allowable range of the dimension of the opening formed in the foundation 1 is widened, and the opening 2 is easily formed in the foundation 1.

  Further, since the frame 11 has the concave portion 17 and the convex portion 18 and the lid 21 has the convex portions 22 and 28, the convex portions 22 and 28 are engaged with the concave portion 17 and the convex portion 18. The opening 15 can be closed by the lid 21. In addition, since the lock member 25 can release the engagement of the projection 28 with the projection 18 by displacing the elastic support portion 27, the lid 21 that closes the opening 15 can be easily removed. Becomes possible. For this reason, the lid can be easily opened and closed in a narrow space under the floor at the time of inspection.

  As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and various changes can be made within the scope of the claims. The plurality of ribs 13b may not be formed on the flange 13 of the frame 11 in the above-described embodiment. Further, the frame main body 12 of the frame body 11 may be formed in a shape other than a square tube, for example, a cylindrical shape. Further, the frame body 12 may not have a lower portion extending in the longitudinal direction A. That is, the frame main body 12 is not particularly limited to a cylindrical shape. Further, the frame 11 may not have the heat insulator 14. The frame 11 may be made of a metal material. Further, the lid 21 may be made of a metal material or a synthetic resin material.

  Further, a convex portion as a first engaging portion may be formed in the frame body 11, and a concave portion in which the convex portion fits may be formed in the lid 21 as a first engaged portion. Further, a concave portion as a second engaging portion may be formed in the frame body 11, and the convex portion 28 may be fitted into the concave portion. Further, a concave portion as a second engaged portion into which the convex portion 18 fits may be formed in the lid 21. Further, the first engaging portion and the second engaging portion may not be provided on the frame body 11, and the first engaged portion and the second engaged portion may not be provided on the lid 21. Further, the lock member 25 may not be provided.

  Further, the first engagement portion and the first engaged portion may be provided one by one on the frame 11 and the lid 21. Further, the packing 19 need not be provided. In this case, when the lid 21 is attached to the frame 11 and the opening 15 is closed, it is preferable that the outer peripheral surface of the lid 21 and the inner peripheral surface of the frame 11 that are opposed to each other abut. .

Reference Signs List 1 foundation 2 opening 10 foundation inspection port 11 frame 12 frame main body 12a outer peripheral side surface 13 flange 13a opposing surface 13b flange 14 heat insulator 16 inner peripheral surface 16a1 lower surface 16a2 upper surface 17 concave portion (first engaging portion)
18 convex part (second engaging part)
19 Packing 21 Lid 21a Lower surface 22 Convex portion (first engaged portion)
25 lock member 27 elastic support portion 28 convex portion (second engaged portion)

Claims (11)

A foundation forming step of opening a part of the foundation defining the lower space of the bathroom to form the foundation,
A frame body arrangement step of arranging a frame of a foundation inspection port in the opening formed in the foundation,
A filling step of filling a foam synthetic resin between the opening of the foundation and the frame body, the method for mounting a foundation inspection port. The frame has a flange formed to protrude from the outer peripheral side surface,
2. The method of claim 1, wherein in the step of arranging the frame, a flange of the frame is opposed to a peripheral edge of the opening of the foundation. 3. The frame has a heat insulator covering the entire outer peripheral side surface of the frame body,
3. The method of claim 1, further comprising, before the filling step, a heat insulating material installation step of providing a heat insulating material on an inner surface of the foundation. 4.   The lid according to any one of claims 1 to 3, further comprising a lid attaching step of attaching a lid having heat insulation to the frame so as to close an opening of the frame. How to install the basic inspection opening. On the facing surface of the flange facing the foundation, irregularities are formed,
The method according to any one of claims 1 to 4, wherein in the filling step, the foam synthetic resin is filled between the facing surface of the flange and the base. A building structure comprising: a base having an opening formed therein; and a base inspection opening having a frame attached to the opening, having an opening inside the opening, and a lid fittable into the opening. And
A building structure, wherein a foam synthetic resin is filled between the opening and the frame. Further comprising a foundation arranged on the foundation and the foundation inspection port,
The building structure according to claim 6, wherein the foamed synthetic resin is also filled between the base and the frame.   The building structure according to claim 7, further comprising a foundation packing disposed between the foundation and the base. Further comprising a heat insulating material provided to cover one side surface of the foundation,
The building structure according to claim 6, wherein the foamed synthetic resin is filled between the frame and the heat insulating material. The frame has a flange formed so as to protrude from an outer peripheral side surface, and is mounted in the opening so that the flange faces an opening peripheral edge of the foundation.
The building structure according to any one of claims 6 to 9, wherein the synthetic foam resin is filled between the flange, the opening, and the outer peripheral side surface.   The building structure according to claim 10, wherein a plurality of irregularities are formed on a surface of the flange facing the foundation.

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