Construction Methods

Abstract

This will resolve the lack of storage space in homes and improve convenience for residents by automatically storing and retrieving luggage. [Solution] The construction method of the present invention forms an insulated space in the underfloor space of a house by surrounding it with insulating material. The insulated space is configured to maintain airtightness with a first insulating material installed vertically and a second insulating material installed horizontally, and at least a portion of the first insulating material is installed so as to be separated from the rising portion of the foundation of the house. According to the present invention, by forming an insulated space by appropriately arranging insulating material in the underfloor space, the entire underfloor space can be uniformly insulated and airtight. This suppresses the occurrence of heat bridges and improves the insulation performance of the house.

Description

[Technical Field]

[0001] The present invention relates to a construction method. [Background technology]

[0002] Conventionally, construction methods have been known in which insulation or airtight materials are installed in the underfloor space of a house to improve insulation or airtightness, such as filling the spaces between floor members in the underfloor space with insulation material or installing an airtight sheet on the underside of the flooring material.

[0003] Patent Document 1 discloses a method for physically closing gaps that termites living underground use as climbing trails to prevent them from climbing into buildings through gaps in entranceways, curbs, and around pipes and causing damage. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-090597 Summary of the Invention [Problem to be solved by the invention]

[0005] However, these construction methods have the problem that it is difficult to insulate and airtight the entire underfloor space uniformly, making it prone to heat bridges. In addition, even if measures against termite damage are taken, there is still the possibility of termites getting into the underfloor space through gaps in the foundation, etc., which can cause damage. In particular, conditions that tend to trap moisture under the floor can lead to increased termite activity. [Means for solving the problem]

[0006] According to the present invention, A construction method for forming an insulated space by surrounding the underfloor space of a house with insulating material, The heat-insulating space is configured to be airtight by a first heat-insulating material provided vertically and a second heat-insulating material provided horizontally, At least a portion of the first insulating material is provided so as to be spaced apart from the foundation rising portion of the house. Construction methods are obtained.

[0007] Further, according to the present invention, A construction method for providing a mat foundation having a base portion extending in a substantially horizontal direction and a rising portion rising in a substantially vertical direction from the base portion, At least a part of an outer surface of the rising portion is positioned inside an end of the base portion. Construction methods are obtained. [Effects of the Invention]

[0008] According to the present invention, by forming an insulated space by appropriately arranging insulating materials in the underfloor space, the entire underfloor space can be uniformly insulated and airtight, thereby suppressing the occurrence of heat bridges and improving the insulation performance of the house. Furthermore, according to the construction method of the present invention, even if the dimensions of the underfloor space vary, the insulation material can be easily installed, which makes it possible to improve the efficiency of installation and stabilize the quality.

[0009] Furthermore, by properly positioning the insulation material in relation to the rising part of the foundation, the insulation performance of the foundation can also be ensured, which makes it possible to improve the insulation performance of the entire house in a balanced manner.

[0010] In addition, the method for forming a heat-insulating space of the present invention can effectively remove moisture from the underfloor space, thereby suppressing termite activity and reducing the risk of damage. By selecting a material for the insulation itself that is less likely to become a direct food source for termites, further effectiveness as a termite control measure can be expected. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a conceptual diagram of a construction method of the present invention. [Figure 2] FIG. 2 is another conceptual diagram of the construction method of the present invention. [Figure 3] FIG. 10 is yet another conceptual diagram of the construction method of the present invention. [Figure 4] 1 is a partially enlarged cross-sectional view showing a construction method according to a first embodiment of the present invention. [Figure 5] FIG. 6 is a partially enlarged cross-sectional view showing a construction method according to a second embodiment of the present invention. [Figure 6] FIG. 10 is a partially enlarged cross-sectional view showing a construction method according to a third embodiment of the present invention. [Figure 7] FIG. 10 is a partially enlarged cross-sectional view showing a construction method according to a fourth embodiment of the present invention. [Figure 8] FIG. 10 is a partially enlarged cross-sectional view showing a construction method according to a fifth embodiment of the present invention. [Figure 9] FIG. 10 is a partially enlarged cross-sectional view showing a construction method according to a sixth embodiment of the present invention. [Figure 10] FIG. 11 is a partially enlarged cross-sectional view showing a construction method according to a seventh embodiment of the present invention. [Figure 11] FIG. 11 is a partially enlarged cross-sectional view showing a construction method according to a seventh embodiment of the present invention. [Figure 12] FIG. 11 is a partially enlarged cross-sectional view showing a construction method according to a seventh embodiment of the present invention. [Figure 13] FIG. 10 is a partially enlarged cross-sectional view showing a comparative example of the present invention. [Figure 14] FIG. 10 is a partially enlarged cross-sectional view showing a comparative example of the present invention. [Figure 15] FIG. 10 is a partially enlarged cross-sectional view showing a comparative example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention will be described below by listing the contents of the embodiments. The present invention has the following configuration. [Item 1] A construction method for forming an insulated space by surrounding the underfloor space of a house with insulating material, The heat-insulating space is configured to be airtight by a first heat-insulating material provided vertically and a second heat-insulating material provided horizontally, At least a portion of the first insulating material is provided so as to be spaced apart from the foundation rising portion of the house. construction method. [Item 2] The construction method according to item 1, The first insulating material and the second insulating material are connected directly or indirectly via a member in the underfloor space. construction method. [Item 3] The construction method according to item 1, the first insulating material includes a portion disposed along at least two adjacent bundles in the underfloor space; The second insulating material is installed so as to include a portion extending along the floor of the house in the upper part of the underfloor space. construction method. [Item 4] The construction method according to item 1, the first insulating material includes a portion disposed along at least two adjacent bundles in the underfloor space; The second insulating material is installed so as to include a portion extending along the floor of the house at the upper part of the underfloor space and a portion extending along the foundation surface of the house at the bottom of the underfloor space. construction method. [Item 5] A construction method for forming an insulated space by surrounding the underfloor space of a house with insulating material, The insulation space is configured so that airtightness is maintained by a first insulation material provided vertically and on an inner surface of the foundation rising portion of the house, A second insulating material is provided on the outer surface of the foundation rising portion, offset vertically from the first insulating material so as to partially sandwich the rising portion, and is provided on the outer surface so that a portion of the outer surface is exposed. construction method. [Item 6] Item 5. The construction method according to item 5, The first insulating material includes a portion extending along a foundation surface of the house at a bottom portion of the underfloor space, providing a covering portion for covering the exposed outer surface; construction method. [Item 7] A construction method for providing a mat foundation having a base portion extending in a substantially horizontal direction and a rising portion rising in a substantially vertical direction from the base portion, At least a part of an outer surface of the rising portion is positioned inside an end of the base portion. construction method. [Item 8] Item 7. The construction method according to item 7, At least a lower end of the outer surface of the rising portion is positioned more inward than an end of the base portion, thereby forming an exposed portion that is at least a part of the upper surface of the base portion and is exposed outside the rising portion. construction method. [Item 9] The construction method according to item 8, an overhang portion extending horizontally from the rising portion; providing a bundle extending substantially perpendicularly from the overhang portion toward the exposed portion; construction method. [Item 10] The construction method according to item 8, an overhang portion extending horizontally from the rising portion; a bundle extending obliquely downward from an end of the overhang portion toward the rising portion; construction method. [Item 11] A building constructed by the construction method described in items 1 to 10. [Item 12] A construction inspection method for inspecting whether a building has been constructed using the construction methods described in items 1 to 10.

[0013] <Details of implementation form> Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0014] First Embodiment <Summary> Figure 1 is a cross-sectional view showing a schematic diagram of the underfloor space of a building. As shown in the figure, the underfloor space is formed below the main body of the building. The underfloor space is composed of a main space that supports the floor of the upper floor and a narrowly defined underfloor space located below the main space.

[0015] The main space is the living space for the residents and plays an important role in supporting the floor structure of the building. On the other hand, the underfloor space in the narrow sense is located below the main space and is not usually used as living space.

[0016] A horizontal boundary exists between the main space and the underfloor space. This boundary corresponds to the floor of the building and separates the main space from the underfloor space. In this invention, the main space and the underfloor space, which are located above and below the floor, are integrated into an insulated structure, thereby improving the thermal insulation performance of the entire building.

[0017] Conventionally, underfloor space has generally been utilized as a space for ventilation, piping, wiring, etc. However, the inventors have come to the realization that the thermal insulation performance of a building can be significantly improved by effectively utilizing the underfloor space as a thermal insulation space. The configuration of the present invention will be described in more detail below.

[0018] As shown in Fig. 2, the first embodiment relates to a construction method for forming an insulated space surrounded by insulating materials in the underfloor space of a house. The insulating materials are formed in a substantially L-shape by insulating materials (first insulating materials) arranged vertically and insulating materials (second insulating materials) arranged horizontally. This allows the insulated space to be configured to maintain airtightness. At least a portion of the first insulating material is arranged so as to be separated from the rising portion of the foundation.

[0019] As shown in FIG. 3, the first and second insulating materials may be connected directly or indirectly via a member in the underfloor space. construction method.

[0020] <Specific configuration> A construction method according to a first embodiment of the present invention will be described below with reference to Figure 4. As shown in the figure, multiple beams are erected in the underfloor space of a building. The underfloor space is made up of floor members supported by these beams and the space below them.

[0021] In the underfloor space, a first insulating material is placed along two adjacent bundles. Specifically, the first insulating material is installed vertically so as to contact the inside side of the bundles. This forms an insulated wall that divides the underfloor space horizontally.

[0022] Next, a second insulating material is placed above the underfloor space along the underside of the floor structure. The second insulating material is installed so as to extend horizontally and is indirectly connected to the upper end of the first insulating material via the floor structure. This forms an insulated ceiling that covers the upper part of the underfloor space.

[0023] In this way, by surrounding the underfloor space with insulation both vertically and horizontally, the entire underfloor space can be made into an insulated structure. By connecting the first insulation material and the second insulation material, the underfloor space is sealed, achieving high insulation performance and airtightness.

[0024] The construction method according to this embodiment is basically configured to provide an insulated structure for the underfloor space, but it is also possible to omit the placement of insulating material as appropriate depending on the construction conditions, etc.

[0025] In particular, if part of the underfloor space is used as storage space, the floor structure directly above the insulated space does not need to be insulated. Because the storage space is used as part of the living space, omitting floor insulation will only have a limited effect on the insulation performance.

[0026] Furthermore, the construction method of the present invention can optimize cost performance depending on the climatic conditions of the construction site. For example, in warm regions, by appropriately controlling the insulation level of the underfloor space, the amount of insulation material used can be reduced, thereby reducing construction costs. On the other hand, in cold regions, where high insulation of the underfloor space is required, the effects of the insulation structure of the present invention can be fully demonstrated.

[0027] Furthermore, by placing insulation material on the bottom of the underfloor space, further improvements in insulation performance can be expected. However, in order to ensure the effective height under the floor, the foundation height must be further increased, and the balance with construction costs must be considered. The use of underfloor insulation should be decided after comprehensively considering various factors, such as the size and use of the building and the climate of the construction site.

[0028] Additionally, termite damage can be a problem in the underfloor space. The construction method of the present invention can also function effectively as a termite prevention measure, because dividing the underfloor space with insulating material can block the termites' invasion route. However, in areas where the risk of termite damage is particularly high, it is desirable to use a dedicated anti-termite construction method in addition to the present invention.

[0029] As described above, the construction method of the present invention is based on an underfloor insulation structure, but can be flexibly adapted to suit construction conditions, etc. This makes it possible to achieve both high levels of thermal insulation performance and cost performance for a building.

[0030] <Second embodiment> The construction method according to the second embodiment of the present invention has a common concept with the construction method according to the first embodiment described above.

[0031] As shown in Figure 5, the first insulating material is placed along the outside of two adjacent bundles (not shown) in the underfloor space, which divides the underfloor space vertically and prevents heat from entering or leaving from the sides.

[0032] Next, the second insulating material is arranged in a roughly U-shape at both the top and bottom of the underfloor space. Specifically, part of the second insulating material extends horizontally along the underside of the floor structure members, covering the top of the underfloor space. This reduces the transfer of heat from the living room to the underfloor space. Furthermore, another part of the second insulating material extends horizontally along the top surface of the foundation concrete, covering the bottom of the underfloor space. This prevents heat from escaping from the underfloor space to the ground.

[0033] In this way, in this embodiment, by covering the sides, top, and bottom of the underfloor space with insulating material, an insulating structure that envelops the underfloor space is realized. By effectively combining the first insulating material and the second insulating material, air flow in the underfloor space is suppressed, further improving the insulating performance and airtightness.

[0034] In this embodiment as well, when part of the underfloor space is utilized as storage space, it is not necessary to provide insulation material for the floor structure members directly above the insulation space.

[0035] The construction method according to this embodiment is considered to be particularly effective in areas where the inhabitation density of Formosan subterranean termites is high and high thermal insulation performance is required. In such an environment, the construction method of the present invention, which can simultaneously achieve termite control and improved thermal insulation, may be one of the best options.

[0036] <Third embodiment> The construction method according to the third embodiment of the present invention differs from the construction methods of the first and second embodiments described above in that no second insulating material is provided extending horizontally.

[0037] More specifically, as shown in FIG. 6, the insulation material in the underfloor space is arranged separately on the inside and outside of the rising part of the foundation.

[0038] First, the first insulation material is installed vertically along the inner surface of the foundation riser. Specifically, the first insulation material is arranged to fill the space between the foundation riser and the ridge substrate. This allows the underfloor space, including the foundation riser, to be partitioned airtightly.

[0039] Next, the second insulation is installed vertically along the outer surface of the foundation rise. The important thing here is that the second insulation is positioned offset vertically from the first insulation. In other words, the top of the second insulation is set lower than the top of the first insulation, and the bottom of the second insulation is aligned at approximately the same height as the bottom of the foundation rise. This means that the second insulation is installed in a way that partially covers the foundation rise.

[0040] The second insulating material arranged in this way works in cooperation with the first insulating material to dramatically improve the insulating performance around the rising part of the foundation. Moreover, by stopping the upper end of the second insulating material at a position lower than the first insulating material, it is possible to expose the base part located at the top of the rising part of the foundation.

[0041] The construction method of the present invention aims to achieve both termite control and improved insulation. That is, in this embodiment, a second insulating material is partially placed on the outer surface of the rising part of the foundation, intentionally exposing part of the foundation concrete. This is a device to make it easier to find termite trails that could serve as entry routes for termites. By setting the upper end of the second insulating material lower than the first insulating material, a certain gap (slit) is formed on the surface of the foundation near the base. By visually inspecting this slit, it becomes possible to detect termite activity early.

[0042] Here, the slits can also function as an accent in the exterior design of the building. Depending on the design, it may be possible to add functionality for termite control while taking advantage of the design features. In this way, by devising the placement of the second insulation material, this embodiment also has the secondary effect of improving both termite control and design. In addition, it is also possible to configure the base of the foundation riser without providing insulation material on the inside (underfloor space side), and this can be selected appropriately in order to streamline construction and optimize building costs.

[0043] Generally, heat loss from the bottom of the foundation is relatively small when viewed from the perspective of the entire underfloor space. Therefore, even if insulation in this area is omitted, the impact on the insulation performance of the entire building is limited. In fact, by increasing the volume of the underfloor space even a little, it is possible to improve workability and economy.

[0044] It is believed that this embodiment will be particularly effective in areas with relatively warm climates.

[0045] <Fourth embodiment> The construction method according to the fourth embodiment of the present invention is obtained by adding some components to the construction method according to the third embodiment described above.

[0046] As shown in FIG. 7, it is a cross-sectional view showing a heat insulating structure according to the construction method of the present invention. In this embodiment, by appropriately arranging the first and second insulating materials in the underfloor space, high thermal insulation performance and termite control measures are both achieved.

[0047] First, the first insulation is installed vertically along the inner surface of the foundation riser. Specifically, the first insulation is arranged to surround the periphery of the underfloor space and includes a section (horizontal insulation section) that extends horizontally along the bottom surface of the foundation. This increases the airtightness of the underfloor space and suppresses the flow of air inside.

[0048] Next, the second insulation is installed vertically along the outer surface of the foundation riser. What is important here is that the second insulation is offset vertically from the first insulation.

[0049] In other words, the upper end of the second insulating material is set lower than the upper end of the first insulating material and is positioned so as to partially sandwich the foundation rising part, resulting in the upper part of the foundation rising part being exposed.

[0050] By exposing part of the foundation in this way, it becomes easier to find termite trails that could be used as entry points for termites. Early detection makes it possible to prevent termite damage before it occurs.

[0051] Furthermore, in this embodiment, a cover is provided to cover the exposed outer surface of the foundation riser. This cover can be made of, for example, a metal plate or a resin plate. By providing the cover, the foundation concrete surface is protected and the insulation material is prevented from being damaged. In addition, by appropriately designing the covering part, it is possible to expect the effect of enhancing the aesthetic appearance of the building's exterior.

[0052] As described above, this embodiment rationally constructs a heat insulating structure for the underfloor space while also taking full consideration of measures against termites. It is noteworthy that by effectively combining the first and second insulation materials, it achieves a high level of both energy-saving performance and termite resistance. In addition, by partially exposing the rising part of the foundation and installing a covering part, maintenance and design have also been improved. This embodiment can be said to be an excellent construction method that includes various added values.

[0053] This embodiment can be one of the best options when termite control is important and high-level energy-saving performance is also required. In particular, it is expected to be extremely effective not only for application in cold regions and highly airtight and highly insulated houses, but also for construction of high-performance energy-saving houses in areas with a high risk of termite damage. As described above, the high-spec specifications of the slit foundation external insulation of the present invention inherit the advantages of the third embodiment while adding a new insulation structure, achieving performance that surpasses even conventional foundation insulation methods. It is possible to achieve both termite control and energy-saving design.

[0054] <Fifth embodiment> The fifth embodiment of the present invention is a construction method specialized in termite control, unlike the construction methods according to the first to fourth embodiments described above.

[0055] <Background technology> A conventional building foundation structure involves the construction of a mat foundation, which consists of a base extending horizontally and a rising portion rising vertically from the base. While this method is effective in ensuring the strength of the foundation, it is difficult to completely block the contact point between the building and the soil, which is a termite intrusion route. Furthermore, there is room for improvement in terms of drainage and moisture prevention around the foundation.

[0056] <Problem to be solved by the invention> The present invention has been made in consideration of the problems of the above-mentioned conventional technology, and aims to provide a construction method that can strengthen termite control measures while improving the foundation structure and improving drainage and moisture resistance.

[0057] <Effects of the invention> According to the present invention, by positioning the outer surface of the rising portion more inward than the end of the base portion, it is possible to effectively block the entry route of termites.

[0058] Furthermore, by exposing part of the base, the condition of the foundation can be easily checked, improving maintainability. Furthermore, the provision of overhangs and beams ensures structural stability.

[0059] Furthermore, the exposed base improves drainage around the foundation, helping to prevent moisture from entering the building.

[0060] As described above, the present invention significantly improves the quality and durability of buildings, and provides an excellent solution, particularly in terms of termite control.

[0061] As shown in Figure 8, the sixth and seventh embodiments described below share the following concept: That is, the construction method according to this embodiment is a construction method for providing a mat foundation having a base portion extending substantially horizontally and a rising portion rising substantially vertically from the base portion, and is characterized in that at least a part of the outer surface of the rising portion is positioned inside the end of the base portion.

[0062] With this structure, the outer surface of the rising section is positioned inside the edge of the base section, reducing the contact area between the soil and the building compared to conventional slab foundation structures. This effectively blocks termite entry routes, reducing the risk of termite infestation into the building and enabling early visual detection of termite trails.

[0063] In particular, this embodiment is characterized by the construction being performed so as to create an exposed portion (curb) that is exposed on at least a portion of the upper surface of the base, outside the rising portion. According to this configuration, the exposed portion formed on the upper surface of the base acts as a physical barrier when termites attempt to invade the building from the soil, making it difficult to invade, and also makes it possible to detect termite trails on the upper surface of the exposed portion at an early stage. Furthermore, rainwater and surface water are effectively drained through the exposed portion, further improving drainage around the foundation. Furthermore, the exposed portion allows for more detailed observation of the condition of the foundation, which facilitates early detection of changes and damage over time, contributing to the long-term maintenance and management of the building.

[0064] Sixth Embodiment The sixth embodiment of the present invention is a modification of the fifth embodiment, and is characterized in that, in addition to the configuration of the fifth embodiment described above, it is provided with an overhang portion and a bundle, as shown in Fig. 9.

[0065] As shown in the figure, the solid foundation part of this embodiment has a base part extending in a substantially horizontal direction and a rising part rising in a substantially vertical direction from the base part. The outer surface of the rising part is located inside the end of the base part, thereby forming an exposed part on the upper surface of the base part.

[0066] In this embodiment, an overhanging portion is provided that projects horizontally from the upper end of the rising portion. The overhanging portion has the function of supporting the upper portion of the outer wall of the building and forming the eaves.

[0067] Furthermore, a plurality of bundles are provided extending substantially perpendicularly from the overhang portion toward the exposed portion. Each bundle stands on the exposed portion from an end of the overhang portion and functions to support the overhang portion.

[0068] The lower ends of the bundles are fixed onto the exposed portions by, for example, anchor bolts or by embedding the lower ends of the bundles into the exposed portions.

[0069] In addition to the above-mentioned advantages, this embodiment can utilize the space below the overhanging section as a place to install equipment or as a small storage space. Furthermore, because the beams are installed upright on the exposed section, inspection and repair of the foundation is easy. Furthermore, the condition of the beams themselves can be easily confirmed.

[0070] In this embodiment, the beams are arranged substantially vertically, but this is not limiting. For example, a modification in which the beams are arranged diagonally to form a truss structure is also conceivable. The material, shape, and spacing of the beams can be appropriately determined taking into account the size and use of the building, the local climatic conditions, etc.

[0071] Seventh Embodiment The seventh embodiment of the present invention is a modification of the fifth embodiment, and is characterized in that it includes an overhang portion and a bundle in addition to the configuration of the fifth embodiment described above, as shown in Figures 10 to 12.

[0072] As shown in the figure, in addition to the configuration of the embodiment described above, it is characterized in that it has an overhang portion and bundles arranged at an angle.

[0073] As shown in the figure, the solid foundation part of this embodiment has a base part extending in a substantially horizontal direction and a rising part rising in a substantially vertical direction from the base part. The outer surface of the rising part is located inside the end of the base part, thereby forming an exposed part (a berm) on the upper surface of the base part. In this embodiment, an overhanging portion is provided that extends horizontally from the upper end of the rising portion. The overhanging portion has the function of supporting the floor structure of the building and forming the perimeter of the building.

[0074] Furthermore, this embodiment is characterized by the provision of multiple bundles extending diagonally downward from the end of the overhang portion toward the rising portion. Each bundle is arranged diagonally from the end of the overhang portion toward the bottom of the rising portion, and serves to support the overhang portion and increase rigidity against lateral forces.

[0075] The lower end of the bundle is fixed to the lower part of the rising part, for example, by using anchor bolts or by embedding the lower end of the bundle in the rising part.

[0076] As shown in FIG. 12, the width of the exposed portion may be small.

[0077] By extending the support pillars diagonally downward, it is possible to ensure the structural stability of the overhang while improving the exterior design. In addition, by adjusting the installation position and angle of the support pillars, it is possible to make effective use of storage space.

[0078] <Comparative Example> Comparative examples are shown in Figures 13 to 15. The construction methods shown in all of the comparative examples have a structure in which thermally insulated materials and non-thermal materials are combined. However, compared to the construction methods according to the first to seventh embodiments described above, the heat insulating performance and termite prevention measures are inferior.

[0079] <Buildings> The present invention also includes buildings constructed using the above-described construction method.

[0080] <Construction inspection method> The present invention also includes a method for inspecting whether or not the above-mentioned construction method is being properly implemented (whether or not it has been implemented).

[0081] The above-described embodiment is merely an example for facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof.

Claims

1. A construction method for forming an insulated space by surrounding the underfloor space of a house with insulating material, The heat-insulating space is configured to be airtight by a first heat-insulating material provided vertically and a second heat-insulating material provided horizontally, At least a portion of the first insulating material is provided so as to be spaced apart from the foundation rising portion of the house. construction method.

2. 2. The construction method of claim 1, The first insulating material and the second insulating material are connected directly or indirectly via a member in the underfloor space. construction method.

3. 2. The construction method of claim 1, the first insulation material includes a portion disposed along at least two adjacent bundles in the underfloor space; The second insulating material is installed so as to include a portion extending along the floor of the house in an upper portion of the underfloor space. construction method.

4. 2. The construction method of claim 1, the first insulation material includes a portion disposed along at least two adjacent bundles in the underfloor space; The second insulating material is installed so as to include a portion extending along the floor of the house at an upper portion of the underfloor space and a portion extending along the foundation surface of the house at a bottom portion of the underfloor space. construction method.

5. A construction method for forming an insulated space by surrounding the underfloor space of a house with insulating material, The insulation space is configured so that airtightness is maintained by a first insulation material provided vertically and on an inner surface of the foundation rising portion of the house, A second insulating material is provided on the outer surface of the foundation rising portion, offset vertically from the first insulating material so as to partially sandwich the rising portion, and is provided on the outer surface so that a portion of the outer surface is exposed. construction method.

6. 6. The construction method according to claim 5, The first insulating material includes a portion extending along a foundation surface of the house at a bottom portion of the underfloor space, providing a covering portion for covering the exposed outer surface; construction method.

7. A construction method for providing a mat foundation having a base portion extending in a substantially horizontal direction and a rising portion rising in a substantially vertical direction from the base portion, At least a part of an outer surface of the rising portion is positioned inside an end of the base portion. construction method.

8. 8. The construction method of claim 7, At least a lower end of the outer surface of the rising portion is positioned more inward than an end of the base portion, thereby forming an exposed portion that is at least a part of the upper surface of the base portion and is exposed outside the rising portion. construction method.

9. The construction method according to claim 8, an overhang portion extending horizontally from the rising portion; providing a bundle extending substantially perpendicularly from the overhang portion toward the exposed portion; construction method.

10. The construction method according to claim 8, an overhang portion extending horizontally from the rising portion; a bundle extending obliquely downward from an end of the overhang portion toward the rising portion; construction method.

11. A building constructed by the construction method according to any one of claims 1 to 10.

12. A construction inspection method for inspecting whether a building has been constructed by the construction method according to any one of claims 1 to 10.

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