Building material support structure for exterior decoration

Abstract

At least one embodiment of the present disclosure provides an exterior building material support structure that ensures waterproofness. **Solution**: An exterior building material support structure that supports exterior building materials partitioning between the indoor and outdoor of a building includes a support concrete laid horizontally and an upright portion installed on the support concrete and supporting the exterior building materials. The upright portion is formed of waterproof mortar. Thereby, it becomes difficult for water such as rain to enter the indoor, and the waterproofness of the exterior building material support structure can be ensured.

Description

Technical Field

[0001] The present disclosure relates to a support structure for exterior building materials.

Background Art

[0002] Conventionally, a support structure for a balcony sash has been known. The support structure includes slab concrete, a standing portion rising from the slab concrete, and a balcony sash installed on the standing portion. The standing portion has a waterproof function of preventing water such as rain from entering the indoor side of the balcony sash. Therefore, if the standing portion is integral with the slab concrete, high waterproof performance is expected.

[0003] However, from the perspective of shortening the construction period of a building, it is preferable that the standing portion is separate from the slab concrete. If the standing portion is integrated with the slab concrete, it is necessary to use a floating formwork for forming the standing portion, and undulations occur on the standing portion after casting. As a result, the construction period is prolonged by the man-hours required for the repair work of the standing portion with undulations.

[0004] For example, when constructing a high-rise condominium, the work of installing the main structures such as columns, beams, floors, and balconies is periodically repeated floor by floor. If the standing portion is integrated with the slab concrete, the man-hours (cycle days) required per floor become longer for the above reasons. The influence of such an increase in man-hours becomes greater as the number of floors of the high-rise condominium increases. Therefore, as in Patent Document 1, it is preferable that the slab concrete and the standing portion are configured separately.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, if the slab concrete and the vertical upper part are configured separately, water such as rainwater easily enters between the two, and there is a concern about water leakage into the room. That is, there is a risk that the waterproof function originally performed by the vertical upper part cannot be ensured.

[0007] An object of the present disclosure is to provide an exterior building material support structure with ensured waterproof performance.

Means for Solving the Problems

[0008] 1) The exterior building material support structure according to at least one embodiment of the present disclosure is an exterior building material support structure that supports an exterior building material that partitions the inside and outside of a building, support concrete, and a vertical upper part that is installed on the support concrete and supports the exterior building material, and the vertical upper part is formed of waterproof mortar.

[0009] According to the configuration of 1) above, since the vertical upper part is formed of waterproof mortar, the waterproof performance of the exterior building material support structure is improved, and water ingress into the room can be suppressed.

[0010] 2) In some embodiments, the exterior building material support structure according to 1) above, the vertical upper part extends along a first direction on the support concrete, and further includes a waterproof sealant that is installed between the support concrete and the vertical upper part and extends along the first direction.

[0011] According to the configuration of 2) above, the waterproof performance of the exterior building material support structure is further improved by the arrangement of the waterproof sealant.

[0012] 3) In some embodiments, the exterior building material support structure according to 2) above, defines a horizontal direction orthogonal to the first direction as a second direction, The waterproof sealing material is disposed closer to the center of the upright portion than both ends of the upright portion in the second direction.

[0013] According to the configuration of 3) above, since it is possible to prevent the waterproof sealing material from being exposed to outside air or water, aging deterioration of the waterproof sealing material can be suppressed. Thereby, the waterproof property of the exterior building material support structure is exhibited over a long period.

[0014] 4) In some embodiments, there is provided an exterior building material support structure according to 3) above, The center of the waterproof sealing material in the second direction is located within the central divided region among three divided regions obtained by dividing the region where the upright portion is disposed into three equal parts along the second direction.

[0015] According to the configuration of 4) above, since the waterproof sealing material is disposed at a position farther from both ends of the upright portion, it is possible to more reliably prevent the waterproof sealing material from being exposed to outside air or water.

[0016] 5) In some embodiments, there is provided an exterior building material support structure according to any one of 2) to 4) above, Defining the dimension of the waterproof sealing material in a second direction, which is a horizontal direction orthogonal to the first direction, as A [mm], and the dimension of the waterproof sealing material in a height direction orthogonal to each of the first direction and the second direction as h [mm], The waterproof sealing material satisfies the following formulas (1), (2), and (3) 5 ≦ A ≦ 30 ··· Formula (1) 1 ≦ h ≦ 10 ··· Formula (2) 0.05 ≦ h / A ≦ 0.5 ··· Formula (3) and is configured to satisfy the above.

[0017] According to the configuration of 5) above, the waterproof property of the waterproof sealing material can be maintained, and good adhesiveness between the waterproof sealing material and the upright portion can be exhibited.

[0018] 6) In some embodiments, there is provided an exterior building material support structure according to any one of 2) to 5) above, Define the dimension of the waterproof sealant in the second direction, which is a horizontal direction orthogonal to the first direction, as A, and the dimension of the upright portion in the second direction as B. The following formula (4) 1 / 20 ≦ A / B ≦ 1 / 4 ··· Formula (4) It is configured to satisfy this.

[0019] According to the configuration of 6) above, good waterproof performance is exhibited, and good adhesiveness between the waterproof sealant and the upright portion is exhibited.

[0020] 7) In some embodiments, it is an exterior building material support structure according to any one of 2) to 6) above, Define the unit volume mass of the upright portion as ρm (t / m 3 ) and the unit volume mass of the waterproof sealant as ρs (t / m 3 ). The following formulas (5), (6), (7) 1.5 ≦ ρm ≦ 2.5 ··· Formula (5) 0.9 ≦ ρs ≦ 1.3 ··· Formula (6) 1.0 < ρm / ρs ≦ 3.0 ··· Formula (7) It is configured to satisfy this.

[0021] According to the configuration of 7) above, when lateral shaking such as an earthquake occurs, the followability between the upright portion and the waterproof sealant is good, and the waterproof performance is enhanced because a gap is less likely to occur between the two.

[0022] 8) In some embodiments, it is an exterior building material support structure according to any one of 2) to 7) above, The waterproof sealant includes a first portion that extends along the first direction and is installed between the support concrete and the upright portion, and a second portion that rises from the end of the first portion in the first direction and extends along the side surface of an adjacent structure.

[0023] ​According to the configuration of 8) above, the first part waterproofs between the supporting concrete and the standing upper part, and the second part waterproofs between the standing upper part and the structure adjacent to the standing upper part. Therefore, even if water accumulates on the outdoor supporting concrete, the intrusion of water into the indoor area can be effectively prevented.

[0024] 9) In some embodiments, it is an exterior building material support structure according to any one of 1) to 8) above, further comprising a waterproof seal installed between the standing upper part and the exterior building material and arranged facing the outdoors.

[0025] According to the configuration of 9) above, since the waterproof seal prevents water from entering between the exterior building material and the standing upper part, the waterproof performance of the exterior building material support structure is further improved.

[0026] 10) In some embodiments, it is an exterior building material support structure according to any one of 1) to 9) above, the standing upper part has an outdoor side surface rising from the supporting concrete and oriented towards the outdoors, and further comprises a first waterproof film including a first standing attachment part attached to the outdoor side surface.

[0027] According to the configuration of 10) above, since the first waterproof film prevents water from entering between the supporting concrete and the standing upper part, the waterproof performance of the exterior building material support structure is further improved.

[0028] 11) In some embodiments, it is an exterior building material support structure according to any one of 1) to 9) above, further comprising a second waterproof film consisting of a second horizontal attachment part attached to the upper surface of the supporting concrete between the supporting concrete and the standing upper part, and a second standing attachment part rising from the second horizontal attachment part and extending along the vertical direction inside the standing upper part.

[0029] According to the configuration of the above (11), since the second waterproof film prevents water that has entered between the supporting concrete and the standing upper part from reaching the indoors, the waterproof performance of the exterior building material support structure is further improved.

[0030] 12) In some embodiments, it is an exterior building material support structure according to any one of the above (1) to (9), The standing upper part has an outdoor side surface that rises from the supporting concrete and is oriented toward the outdoors, a first waterproof film including a first standing attachment part attached to the outdoor side surface; a second waterproof film including a second horizontal attachment part attached to the upper surface of the supporting concrete between the supporting concrete and the standing upper part, and a second standing attachment part that rises from the second horizontal attachment part and extends along the vertical direction inside the standing upper part; and further includes.

[0031] According to the configuration of the above (12), by using the first waterproof film and the second waterproof film in combination, it is possible to more reliably prevent water that has entered between the supporting concrete and the standing upper part from reaching the indoors. Therefore, the waterproof performance of the exterior building material support structure is further improved.

[0032] 13) In some embodiments, it is an exterior building material support structure according to the above (11) or (12), The standing upper part extends along a first direction on the supporting concrete, further includes a waterproof sealing material that is installed between the supporting concrete and the standing upper part and extends along the first direction, The second waterproof film is located on the outdoor side of the waterproof sealing material.

[0033] According to the configuration of the above (13), since the second waterproof film prevents water that has entered between the supporting concrete and the standing upper part from reaching the waterproof sealing material, the aging deterioration of the waterproof sealing material can be suppressed.

[0034] 14) In some embodiments, it is an exterior building material support structure according to the above (12), The first waterproof film is made of a material different from that of the second waterproof film.

[0035] The first waterproof film and the second waterproof film may have different required performances other than waterproofness. Since the first waterproof film is exposed to sunlight and rainfall, high waterproofness and weather resistance may be required. In addition, the second waterproof film may be required to have high adhesiveness and durability with the waterproof mortar at the standing upper part. In this regard, according to the configuration of 14) above, considering the required performances, the materials of the first waterproof film and the second waterproof film are selected respectively, so that the high waterproofness of the exterior building material support structure and the suppression of the aging deterioration of the exterior building material support structure can be effectively achieved simultaneously.

[0036] 15) In some embodiments, it is the exterior building material support structure described in 14) above, the first waterproof film is a urethane-based coating film, the second waterproof film is a polymer cement-based coating film.

[0037] According to the configuration of 15) above, by using a urethane-based coating film for the first waterproof film and a polymer cement-based coating film for the second waterproof film, the effects of 14) above can be more effectively enjoyed.

Effect of the Invention

[0038] According to the present disclosure, an exterior building material support structure with ensured waterproofness can be provided.

Brief Description of the Drawings

[0039]

Figure 1

Figure 2

Figure 3

Figure 4

Best Mode for Carrying Out the Invention

[0040] Hereinafter, some embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present disclosure, but are merely illustrative examples. For example, expressions representing relative or absolute arrangements such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric", or "coaxial" not only strictly represent such arrangements, but also represent states in which there are tolerances or relative displacements with angles and distances that can obtain the same function. For example, expressions representing that things such as "identical", "equal", and "homogeneous" are in an equal state not only strictly represent an equal state, but also represent states in which there are tolerances or differences that can obtain the same function. For example, expressions representing shapes such as a rectangular shape or a cylindrical shape not only represent shapes such as a rectangular shape or a cylindrical shape in a geometrically strict sense, but also represent shapes including concave and convex portions, chamfered portions, etc. within a range where the same effect can be obtained. On the other hand, the expressions "comprising", "including", or "having" for a component are not exclusive expressions that exclude the existence of other components. Note that the same reference numerals may be given to the same configurations, and the description may be omitted.

[0041] FIG. 1 is a schematic view of an exterior building material support structure 1 according to the first embodiment. The exterior building material support structure 1 supports an exterior building material 2 that partitions the indoor and outdoor areas of a building 9, which may be, for example, a high-rise condominium. The exterior building material 2 in this embodiment is a balcony sash. In FIG. 1, the left side of the exterior building material 2 is the outdoor side of the building 9, and the right side is the indoor side. Hereinafter, the exterior building material support structure 1 may be abbreviated as "support structure 1".

[0042] The support structure 1 includes a support concrete 3 and a standing part 4 rising from the support concrete 3. The support concrete 3 may be slab concrete or beam concrete. The standing part 4 installed on the support concrete 3 extends in a first direction (the front-back direction of the paper in FIG. 1) along the horizontal direction and supports the exterior building material 2. The standing part 4 includes an outdoor side surface 41a which is a side surface oriented toward the outdoors, and the outdoor side surface 41a rises from the support concrete 3. Note that the standing part 4 includes an indoor side surface 41b which is a side surface oriented toward the indoors, and the indoor side surface 41b rises from the support concrete 3. The indoor side surface 41b of the standing part 4 illustrated in FIG. 1 is oriented so as to be continuous with the indoor side surface 2b of the exterior building material 2.

[0043] In this embodiment, the standing part 4 is formed of mortar containing a waterproof agent (i.e., waterproof mortar). This waterproof agent is a cement-modified type admixed waterproof agent that imparts water repellency to the mortar. The ratio of the waterproof agent to the mortar is, for example, 1% or more and 10% or less by weight, preferably 2% or more and 6% or less. According to the inventor's findings, when the ratio is less than 1%, the waterproof property of the mortar deteriorates, and when it exceeds 10%, the strength of the mortar decreases.

[0044] The waterproof mortar is configured to have a water permeability ratio of 70% or less with respect to the water permeability test of non-incorporated mortar. This enhances the waterproof property of the waterproof mortar. The water permeability test is conducted in accordance with the "Test Method for Cement Waterproof Agents for Building" defined in JIS-A-1404 (2015). The water pressure of the water permeability test is 3.0×10 5 Pa, and the time for applying the water pressure is 1 hour.

[0045] Note that the above-mentioned waterproof agents include inorganic-based and organic-based types. The inorganic-based types include calcium chloride-based, sodium silicate-based, silica-based, etc., and the organic-based types include higher fatty acids such as higher fatty acid-based and higher fatty acid salts.

[0046] The support structure 1 illustrated in FIG. 1 further includes a waterproof sealing material 5 installed between the support concrete 3 and the standing upper part 4. The waterproof sealing material 5 includes an elastic body, a plastic body, or a viscous body having waterproof performance. The waterproof sealing material 5 in this example is a butyl seal extending in the first direction. Here, a horizontal direction orthogonal to the first direction is defined as the second direction. The second direction corresponds to the left - right direction in FIG. 1 and also corresponds to the width direction of the waterproof sealing material 5.

[0047] As shown in FIG. 2, the waterproof sealing material 5 is disposed closer to the center side of the standing upper part 4 than both ends 45 of the standing upper part 4 in the second direction. Also, among the three divided regions R1, R2, R3 obtained by dividing the region in the second direction where the standing upper part 4 is disposed into three equal parts, the center 5M of the waterproof sealing material 5 in the second direction is disposed in the central divided region R2. In the example of FIG. 2, all parts of the waterproof sealing material 5 are disposed in the divided region R2, but instead, a part of the waterproof sealing material 5 may be disposed in the divided regions R1, R3.

[0048] Define the dimension (maximum dimension) of the waterproof sealing material 5 in the second direction as A [mm], and the dimension (maximum dimension) of the waterproof sealing material 5 in the height direction orthogonal to each of the first direction and the second direction as h [mm]. In this case, the waterproof sealing material 5 is configured to satisfy all of the following formulas (1), (2), and (3). 5≦A≦30 ··· Formula (1) 1≦h≦10 ··· Formula (2) 0.05≦h / A≦0.5 ··· Formula (3)

[0049] Formula (1) means that A is 5 mm or more and 30 mm or less, but preferably A is 10 mm or more and 20 mm or less. Formula (2) means that h is 1 mm or more and 10 mm or less, but preferably h is 2 mm or more and 7 mm or less. Formula (3) means that h / A is 0.05 or more and 0.5 or less, but preferably h / A is 0.1 or more and 0.3 or less. According to the above configuration, the waterproof property of the waterproof sealing material 5 can be maintained, and good adhesion between the waterproof sealing material 5 and the standing upper part 4 can be exhibited.

[0050] Further, defining the dimension (maximum dimension) of the vertical upper portion 4 in the second direction as B, the exterior building material support structure 1 is configured such that the following formula (4) holds. 1 / 20 ≦ A / B ≦ 1 / 4 ··· Formula (4)

[0051] Formula (4) means that A / B is 1 / 20 or more and 1 / 4 or less, but preferably A / B is 1 / 15 or more and 1 / 5 or less. According to the above configuration, good waterproof performance is exhibited, and good adhesiveness between the waterproof sealant 5 and the vertical upper portion 4 is exhibited.

[0052] Furthermore, defining the unit volume mass of the vertical upper portion 4 (i.e., waterproof mortar) as ρm (t / m 3 ) and the unit volume mass of the waterproof sealant 5 as ρs (t / m 3 ), the exterior building material support structure 1 is configured such that the following formulas (5), (6), and (7) all hold. 1.5 ≦ ρm ≦ 2.5 ··· Formula (5) 0.9 ≦ ρs ≦ 1.3 ··· Formula (6) 1.0 < ρm / ρs ≦ 3.0 ··· Formula (7)

[0053] Formula (7) means that ρm / ρs is greater than 1.0 and 3.0 or less, but preferably ρm / ρs is greater than 1.1 and 2.8 or less. According to the configuration in which formulas (5), (6), and (7) hold, the followability of the vertical upper portion 4 and the waterproof sealant 5 is good when lateral sway such as an earthquake occurs, and the waterproof performance is enhanced because a gap is less likely to occur between the two.

[0054] FIG. 3 is a schematic cross-sectional view of the exterior building material support structure 1 viewed from the second direction. In FIG. 3, a cross-section of the support structure 1 cut at the position of the waterproof sealant 5 is shown. In FIG. 3, the first direction corresponds to the left-right direction, the second direction corresponds to the front-back direction of the paper, and the height direction corresponds to the up-down direction. As shown in FIG. 3, the support structure 1 is adjacent to the structure 200 in the second direction. Note that the structure 200 is not particularly limited and may be, for example, the outer wall or column of the building 9.

[0055] As shown in FIG. 3, the waterproof sealing material 5 includes a first portion 51 extending along a first direction and a second portion 53 rising from an end portion 52 of the first portion 51 in a second direction. The second portion 53 extends along a height direction.

[0056] The first portion 51 is installed between the support concrete 3 and the standing portion 4. The end portion 52 of the first portion 51 is provided so as to contact a side surface 202 of a structure 200 adjacent to the exterior building material support structure 1.

[0057] The second portion 53 extends along the side surface 202 of the structure 200 adjacent to the exterior building material support structure 1. In the embodiment shown in FIG. 2, the second portion 53 rises from both end portions 52 of the first portion 51. In other embodiments, the second portion 53 rises from one end portion 52 of the first portion 51.

[0058] When the height of the standing portion 4 is H, it is preferable that the height h' of the second portion 53 satisfies the condition of 0.25 ≦ h' / H ≦ 1. By the height h' of the second portion 53 satisfying the above conditions, even if water accumulates outdoors in the building 9, the intrusion of water into the indoor can be effectively prevented.

[0059] Returning to FIG. 1, the support structure 1 further includes a waterproof seal 19 installed between the standing portion 4 and the exterior building material 2 and arranged facing the outdoors. The waterproof seal 19 extends in the first direction. The waterproof seal 19 includes an elastic body, a plastic body, or a viscous body having waterproof performance. The waterproof seal 19 is a urethane seal or a silicon seal.

[0060] The upper end of the outdoor side surface 41a of the standing portion 4 is located at a lower position than the lower surface 2c of the exterior building material 2. The standing portion 4 further has a surface 41e located on the indoor side of the outdoor side surface 41a and a surface 41f connecting the upper end of the outdoor side surface 41a and the lower end of the surface 41e.

[0061] The waterproof seal 19 has a side surface 19a oriented outdoors, a side surface 19b located on the indoor side of the side surface 19a, and a surface 19c connecting the lower end of the side surface 19a and the lower end of the side surface 19b. The side surface 19a of the waterproof seal 19 is oriented so as to be continuous with the outdoor side surface 41a of the upright upper part 4. Also, the side surface 19a of the waterproof seal 19 is oriented so as to be continuous with the outdoor side surface 2a of the exterior building material 2. The side surface 19b of the waterproof seal 19 faces the surface 41e of the upright upper part 4. The surface 19c of the waterproof seal 19 faces the surface 41f of the upright upper part 4.

[0062] In some embodiments, as shown in FIG. 1, the lower end of the side surface 19a of the waterproof seal 19 is located below the lower end of the side surface 19b. That is, the surface 19c of the waterproof seal 19 is inclined downward as it goes from the side surface 19b to the side surface 19a.

[0063] As shown in FIG. 1, the support structure 1 further includes a first waterproof membrane 10 attached to the support concrete 3 and the upright upper part 4. The first waterproof membrane 10 is a polyurethane-based seal extending in a first direction. The first waterproof membrane 10 is composed of a first horizontal attachment part 11 and a first upright attachment part 12.

[0064] The first horizontal attachment part 11 is attached to the upper surface 31 of the support concrete 3. The first upright attachment part 12 rises from the first horizontal attachment part 11 and is attached to the outdoor side surface 41a of the upright upper part 4. However, the first waterproof membrane 10 may not include the first horizontal attachment part 11. Also, instead of being an attached type seal, the first waterproof membrane 10 may be formed by solidifying a liquid waterproof agent.

[0065] In some embodiments, as shown in FIG. 1, the upper end of the first upright attachment part 12 is attached at the height position of the lower surface 2c of the exterior building material 2. In other embodiments, the upper end of the first upright attachment part 12 may be attached to the outdoor side surface 2a of the exterior building material 2 above the height position of the lower surface 2c of the exterior building material 2.

[0066] In some embodiments, as shown in FIG. 1, the first rising attachment portion 12 is attached to the outdoor side surface 41a of the rising portion 4 and the side surface 19a of the waterproof seal 19.

[0067] FIG. 4 is a schematic view of the exterior building material support structure 1 according to the second embodiment. In FIG. 4, the same reference numerals are given to the same components as in FIG. 1. The support structure 1 further includes a second waterproof film 20 disposed on the outdoor side of the waterproof sealant 5. The second waterproof film 20 includes a second horizontal attachment portion 21 and a second rising attachment portion 22. The second horizontal attachment portion 21 is attached to the upper surface 31 of the support concrete 3 between the support concrete 3 and the rising portion 4. Also, a part of the second horizontal attachment portion 21 is disposed on the outdoor side of the rising portion 4 and is interposed between the first horizontal attachment portion 11 and the support concrete 3. That is, the first horizontal attachment portion 11 according to the second embodiment is attached to the upper surface 31 of the support concrete 3 via the second horizontal attachment portion 21. The second rising attachment portion 22 rises from the second horizontal attachment portion 21 and extends along the vertical direction inside the rising portion 4. The second waterproof film 20 may be formed by solidifying a liquid waterproof agent instead of being a pasted type seal.

[0068] In some embodiments, as shown in FIG. 4, the rising portion 4 includes a main body portion 42 having an indoor side surface 42b (41b) oriented toward the indoor side, and an additional portion 43 having an outdoor side surface 43a (41a) oriented toward the outdoor side. The main body portion 42 further has a side surface 42a located on the outdoor side of the indoor side surface 42b (41b). The additional portion 43 further has a side surface 43b located on the indoor side of the outdoor side surface 43a (41a), and a surface 43f (41f) connecting the upper end of the outdoor side surface 43a (41a) and the upper end of the side surface 43b. The surface 43f of the additional portion 43 is located below the lower surface 2c of the exterior building material 2. In the embodiment shown in FIG. 4, the second rising attachment portion 22 is located between the side surface 42a of the main body portion 42 and the side surface 43b of the additional portion 43. In the embodiment illustrated in FIG. 4, the second rising attachment portion 22 is positioned between the side surface 42a of the main body portion 42, the side surface 43b of the additional portion 43, and the side surface 19b of the waterproof seal 19.

[0069] In some embodiments, the first waterproof film 10 and the second waterproof film 20 are made of different materials. The first waterproof film 10 and the second waterproof film 20 are each made of materials with different performances other than waterproofness. Since the first waterproof film 10 is exposed to sunlight and rainfall, high waterproofness and weather resistance are required. Therefore, the first waterproof film 10 is preferably, for example, a urethane-based coating film. The second waterproof film 20 is required to have high adhesiveness and durability with the waterproof mortar of the rising portion 4. Therefore, the second waterproof film 20 is preferably, for example, a polymer cement-based coating film.

[0070] The installation procedure of the support structure 1 according to the second embodiment will be outlined. After laying the support concrete 3, the waterproof seal material 5 is installed. Then, the main body portion 42 of the rising portion 4 is formed by molding. After that, the second waterproof film 20 is installed. At this time, the second rising attachment portion 22 of the second waterproof film 20 is attached to the outdoor side surface 42a of the main body portion 42. Further thereafter, the additional portion 43 of the rising portion 4 is molded. The additional portion 43 is integrated with the main body portion 42, and at least a part of the second rising attachment portion 22 is disposed inside the rising portion 4. Thereafter, the first rising attachment portion 12 of the first waterproof film 10 is attached to the outdoor side surface 43a of the additional portion 43 (that is, the outdoor side surface 41a of the rising portion 4). The additional portion 43 is lower than the main body portion 42, and a waterproof seal 19 is disposed between the additional portion 43 and the exterior building material 2.

[0071] As described above, the rising portion 4 of the exterior building material support structure 1 is formed of waterproof mortar. Thereby, the waterproofness of the exterior building material support structure 1 is improved, and the entry of water into the room can be suppressed. Further, by providing the waterproof seal material 5, the waterproofness of the exterior building material support structure 1 is further improved.

[0072] In addition, according to the configuration in which the waterproof sealing material 5 is disposed closer to the center side of the standing upper portion 4 than both ends 45 of the standing upper portion 4 in the second direction, it is possible to prevent the waterproof sealing material 5 from being exposed to outside air or water, so that the aging deterioration of the waterproof sealing material 5 can be suppressed. Thereby, the waterproof property of the exterior building material support structure 1 is exhibited over a long period. Further, since the center 5M of the waterproof sealing material 5 is located in the central partition region R2, the waterproof sealing material 5 is disposed at a position farther from both ends 45 of the standing upper portion 4, and it is possible to more reliably prevent the waterproof sealing material 5 from being exposed to outside air or water.

[0073] In addition, according to the configuration in which the first waterproof film 10 is provided, since the first waterproof film 10 prevents water from entering between the support concrete 3 and the standing upper portion 4, the waterproof property of the exterior building material support structure 1 is further improved.

[0074] In addition, according to the configuration in which the second waterproof film 20 is provided, since the second waterproof film 20 prevents water that has entered between the support concrete 3 and the standing upper portion 4 from reaching the interior, the waterproof property of the exterior building material support structure 1 is further improved.

[0075] In addition, since the second waterproof film 20 is located on the outdoor side of the waterproof sealing material 5, the second waterproof film 20 prevents water that has entered between the support concrete 3 and the standing upper portion 4 from reaching the waterproof sealing material 5, so that the aging deterioration of the waterproof sealing material 5 can be suppressed.

[0076] Note that the embodiments shown in FIGS. 1 to 4 are merely examples of the present disclosure. From the viewpoint of value engineering (VE), it is preferable that the configuration of the support structure 1 is as simple as possible within the range in which the required waterproof property of the support structure 1 can be exhibited. For example, the first waterproof film 10 and the second waterproof film 20 are not essential components of the exterior building material support structure 1, and these components may be omitted as appropriate.

Description of Reference Numerals

[0077] 1: Support structure (exterior building material support structure) 2: Exterior building material 3: Support concrete 4: Upright upper part 5: Waterproof sealant 5M: Center 9: Building 10: First waterproof film 11: First horizontal attachment part 12: First upright attachment part 19: Waterproof seal 20: Second waterproof film 21: Second horizontal attachment part 22: Second upright attachment part 31: Upper surface 41a: Outdoor side surface 42: Main body part 42a: Side surface 43: Additional part 45: Both ends 51: First part 52: End part 53: Second part R1: Division area R2: Division area R3: Division area

Claims

1. An exterior building material support structure for supporting an exterior building material that separates the indoor and outdoor areas of a building, Support concrete; A rising portion that is placed on the supporting concrete and supports the exterior building material; Equipped with The rising portion is formed of waterproof mortar, The rising portion extends along a first direction on the supporting concrete, The concrete support structure further includes a waterproof sealant disposed between the concrete support structure and the rising portion and extending along the first direction. The waterproof sealant is A first portion extending along the first direction and installed between the supporting concrete and the rising portion; a second portion rising from an end of the first portion in the first direction and extending along a side surface of an adjacent structure; Includes Exterior building material support structure.

2. An exterior building material support structure for supporting an exterior building material that separates the interior and exterior of a building, Support concrete; A rising portion that is placed on the supporting concrete and supports the exterior building material; Equipped with The rising portion is formed of waterproof mortar, The second waterproofing membrane further includes a second horizontal attachment portion attached to the upper surface of the supporting concrete between the supporting concrete and the rising portion, and a second rising attachment portion rising from the second horizontal attachment portion and extending along the vertical direction inside the rising portion. Exterior building material support structure.

3. An exterior building material support structure for supporting an exterior building material that separates the interior and exterior of a building, Support concrete; A rising portion that is placed on the supporting concrete and supports the exterior building material; Equipped with The rising portion is formed of waterproof mortar, The rising portion rises from the supporting concrete and has an exterior side surface oriented toward the exterior, A first waterproofing film including a first rising attachment portion attached to the outdoor side surface; A second waterproofing membrane including a second horizontal attachment portion attached to the upper surface of the supporting concrete between the supporting concrete and the rising portion, and a second rising attachment portion rising from the second horizontal attachment portion and extending along the vertical direction inside the rising portion; Further equipped Exterior building material support structure.

4. The rising portion extends along a first direction on the supporting concrete, A waterproof sealant is further provided between the supporting concrete and the rising portion and extends along the first direction. The second waterproofing film is located on the outdoor side of the waterproof sealant.

3. The exterior building material support structure of claim 2.

5. The first waterproofing film is made of a material different from that of the second waterproofing film.

4. The exterior building material support structure of claim 3.

6. The first waterproofing film is a urethane coating film, The second waterproofing film is a polymer cement-based coating film.

6. The exterior building material support structure of claim 5.

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