building

Abstract

To provide a building capable of making a main room an integrated space rich in variations.SOLUTION: A building 10 has a first floor 11 and a second floor. On the first floor 11, a main room 20 constituted as a space having no columns inside is provided. The main chamber 20 has a first region 21, a second region 22 aligned with the first region 21, and a third region 23 located opposite to the second region 22 across the first region 21 in the direction in which the first region 21 and the second region 22 are aligned. The first region 21 and the second region 22 are partitioned by a partition wall 24. A stairwell connected to the second floor is provided in the third area 23. The first floor 11 is provided with an intermediate chamber 30 connected to at least two of the first region 21, the second region 22, and the third region 23.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to buildings. [Background technology]

[0002] Patent Document 1 discloses a two-story building. A common room is provided as the main room on the first floor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-218439 Summary of the Invention [Problem to be solved by the invention]

[0004] If the main room is constructed as a space without pillars, the main room tends to be a homogeneous space with little variation, which may cause users of the main room to feel lonely. [Means for solving the problem]

[0005] (1) A building that solves the above problem has a first and second floor, and the first floor has a main room configured as a space without pillars inside, the main room has a first area, a second area aligned with the first area, and a third area located on the opposite side of the second area across the first area in the direction in which the first and second areas are aligned, the first area and the second area are separated by a partition wall, the third area has an atrium that connects to the second floor, and the first floor has an intermediate room that connects to at least two of the first area, the second area, and the third area.

[0006] According to this configuration, the main room has first to third areas. The first and second areas are separated by a partition wall. Therefore, the second area is a space that ensures privacy from the first area. Furthermore, the third area has an atrium. Therefore, the third area is a space that feels more open than the first area. In this way, the main room has spatial changes in the direction in which the first to third areas are lined up. Meanwhile, the first floor has an intermediate room that is connected to at least two of the first to third areas. Therefore, two different areas are connected via the intermediate room. Therefore, the main room becomes a unified space that is rich in variety.

[0007] (2) In the building described in (1) above, the first area has a first floor and a first ceiling, the second area has a second floor located lower than the first floor and a second ceiling located lower than the first ceiling, and the third area has a skip floor located higher than the first floor and lower than the floor of the second floor.

[0008] According to this configuration, the second floor surface of the second area is located at a lower position than the first floor surface of the first area. Therefore, the main room has a change in the spatial dimension in the vertical direction. Furthermore, since the line of sight of users in the second area is lower than that of users in the first area, it becomes difficult for the line of sight of users in the second area 22 to meet the line of sight of users in the first area 21. Therefore, the privacy of the second area 22 is improved.

[0009] The second ceiling of the second area is located lower than the first ceiling of the first area. This makes the entire second area a space that is one level lower than the first area. This makes the brightness of the second area darker than the brightness of the first area, which also creates a change in brightness in the main room. Furthermore, users of the second area are more likely to feel enveloped, improving the comfort of the second area.

[0010] The third area has a split-level floor that is higher than the first floor and lower than the second floor, which creates a change in the height of the main room.

[0011] (3) In the building of (2) above, a surrounding wall is provided in the third area to surround the skip floor, and the upper surface of the surrounding wall is located at a position lower than the first ceiling. With this configuration, the surrounding wall improves the privacy of the split-floor system. The upper surface of the surrounding wall is also located lower than the first ceiling of the first area. This ensures a connection between the space inside the surrounding wall and the first area.

[0012] (4) In any one of the buildings (1) to (3) above, the intermediate room connects the main room to the outdoors, the intermediate room is separated from the outdoors by a sliding window, and the ceiling of the intermediate room is a sloped ceiling that decreases in height as it goes from the main room to the outdoors. With this configuration, the intermediate room functions as a veranda space. Also, the intermediate room has a sloped ceiling, which makes the intermediate room a space with an open feel.

[0013] (5) In the building described in (4) above, a roof covering the intermediate room is provided, the roof having eaves and soffit located on the outdoor side of the French window, the roof being a sloped roof that decreases in height from the main room to the outdoor side, the slope of the roof being the same as the slope of the ceiling of the intermediate room, and the soffit being arranged so that the outdoor side end of the soffit is located higher than the outdoor side end of the ceiling of the intermediate room.

[0014] This configuration allows more light to enter the intermediate room compared to when the ceiling of the intermediate room is extended to the eaves of the roof.

[0015] (6) In the building of any one of (1) to (5) above, a hanging wall hanging from the ceiling is provided at the boundary between the main room and the intermediate room. With this configuration, the amount of light reflected by the floor surface of the intermediate room and entering the main room can be adjusted by the hanging wall.

[0016] (7) In the building of any one of (1) to (6) above, the partition wall is provided with a plurality of through holes that connect the first area and the second area. According to this configuration, it is possible to make it difficult for the line of sight of a user in the first area to meet the line of sight of a user in the second area, while maintaining the connection between the first area and the second area. [Effects of the Invention]

[0017] According to the building of the present invention, the main room can be made into an integrated space with a wide variety of features. [Brief explanation of the drawings]

[0018] [Figure 1] This is the floor plan for the first floor of the building. [Figure 2] 2 is a cross-sectional view of the building taken along line 2-2 in FIG. 1. [Figure 3] 3 is a cross-sectional view of the building taken along line 3-3 in FIG. 1. [Figure 4] 4 is a cross-sectional view of the building taken along line 4-4 in FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0019] A building 10 of this embodiment will be described with reference to Figures 1 to 4. The building 10 of this embodiment is a detached house. The building 10 of this embodiment has a first floor 11 and a second floor 12 .

[0020] As shown in FIG. 1, the first floor 11 is provided with a main room 20, an intermediate room 30, and a terrace 40. The main room 20 is configured as a space without pillars inside. In this embodiment, the main room 20 is rectangular in plan view. The intermediate room 30 connects the main room 20 to the outdoors. The intermediate room 30 is rectangular in plan view. The longitudinal and lateral directions of the intermediate room 30 coincide with the longitudinal and lateral directions of the main room 20, respectively. In this embodiment, the longitudinal dimension of the intermediate room 30 is 10 m or more. The terrace 40 is provided outdoors. The terrace 40 includes a portion provided along the intermediate room 30. The terrace 40 is configured as an extension of the intermediate room 30.

[0021] 3 and 4, the main room 20 is a space that overlaps with the second floor 12. On the other hand, the middle room 30 is a space that does not overlap with the second floor 12. <Main Room> 1 and 2, the main room 20 has a first area 21, a second area 22, and a third area 23. In this embodiment, the first area 21 is a dining kitchen (DK). The second area 22 is a living room. The third area 23 is a second living room.

[0022] The second region 22 is aligned with the first region 21. In this embodiment, the second region 22 is aligned with the first region 21 in the longitudinal direction of the main chamber 20. The third region 23 is provided on the opposite side of the first region 21 from the second region 22 in the direction in which the first region 21 and the second region 22 are aligned. In this embodiment, the third region 23 is located on the opposite side of the first region 21 from the second region 22 in the longitudinal direction of the main chamber 20. In other words, the first region 21 is located between the second region 22 and the third region 23 in the longitudinal direction of the main chamber 20.

[0023] 2, the first area 21 has a first floor surface 21a and a first ceiling 21b. In this embodiment, the first floor surface 21a is made up of a plurality of flooring materials. The second area 22 has a second floor surface 22a and a second ceiling 22b. In this embodiment, the second floor surface 22a is plastered. The second floor surface 22a is located lower than the first floor surface 21a. The second ceiling 22b is located lower than the first ceiling 21b. In other words, the second area 22 is located lower than the first area 21. In this embodiment, the amount of depression of the second ceiling 22b relative to the first ceiling 21b is greater than the amount of depression of the second floor surface 22a relative to the first floor surface 21a. Therefore, the height from the second floor surface 22a to the second ceiling 22b in the second area 22 is lower than the height from the first floor surface 21a to the first ceiling 21b in the first area 21.

[0024] The first area 21 and the second area 22 are separated by a partition wall 24. The partition wall 24 extends along the short direction of the main chamber 20. In this embodiment, the partition wall 24 connects the second floor surface 22a and the second ceiling 22b. In this embodiment, the partition wall 24 is a hollow block. The partition wall 24 has a plurality of through holes 24a. The first area 21 and the second area 22 communicate with each other via the through holes 24a.

[0025] The third area 23 has a third floor surface 23a. The third floor surface 23a is provided at the same height as the first floor surface 21a. The floor surface 12a of the second floor 12 is not provided in the portion of the second floor 12 that overlaps with the third area 23. In other words, the third area 23 has an atrium 25 that connects to the second floor 12. Therefore, the third area 23 does not have a ceiling.

[0026] In this embodiment, a skip floor 26 is provided in the third area 23. The skip floor 26 is provided at a position higher than the first floor surface 21a and lower than the floor surface 12a of the second floor 12. A carpet (not shown) is laid on the floor surface of the skip floor 26 in this embodiment.

[0027] 1, the third area 23 is provided with a staircase 27 connecting the skip floor 26 and the first floor surface 21a of the first area 21. In addition, the third area 23 is provided with a surrounding wall 28 surrounding the skip floor 26.

[0028] As shown in FIGS. 2 and 3, the upper surface 28a of the surrounding wall 28 is located at a position lower than the first ceiling 21b. <Intermediate Room> As shown in Figures 3 and 4, the intermediate room 30 of this embodiment is connected to each of the first area 21 and the second area 22. The intermediate room 30 is connected so as to be continuous with the first area 21. No partition is provided between the intermediate room 30 and the first area 21. The first area 21 and the second area 22 are connected via the intermediate room 30. The intermediate room 30 is separated from the outdoors by a sliding window 31.

[0029] As shown in Figure 3, the intermediate room 30 has a floor 30a and a ceiling 30b. The floor 30a is provided at the same height as the first floor 21a. The floor 30a of the intermediate room 30 in this embodiment is plastered. The floor 30a of the intermediate room 30 in this embodiment is white.

[0030] 4, the second floor surface 22a of the second area 22 is located at a lower position than the floor surface 30a of the intermediate room 30. The second area 22 is provided with a staircase 29 connecting the second floor surface 22a and the floor surface 30a of the intermediate room 30.

[0031] As shown in FIGS. 3 and 4, the ceiling 30b of the intermediate room 30 in this embodiment is a sloped ceiling that slopes in the width direction of the intermediate room 30 so that the height decreases from the main room 20 toward the outdoors.

[0032] The building 10 has a roof 32 covering the intermediate room 30. The roof 32 is a sloped roof that slopes in the short direction of the intermediate room 30 so that its height decreases from the main room 20 toward the outdoors. In this embodiment, the slope of the roof 32 is the same as the slope of the ceiling 30b of the intermediate room 30. That is, the roof 32 extends parallel to the ceiling 30b of the intermediate room 30. The roof 32 includes eaves 32a and eaves soffit 32b that are located on the outdoors side of the French window 31. The eaves soffit 32b extends parallel to the ceiling 30b of the intermediate room 30. The eaves soffit 32b is arranged so that the outdoors-side end 32c of the eaves soffit 32b is located higher than the outdoors-side end 30c of the ceiling 30b of the intermediate room 30.

[0033] <Terrace> The floor surface 40a of the terrace 40 is provided at the same height as the floor surface 30a of the intermediate room 30. The floor surface 40a of the terrace 40 is plastered, similar to the floor surface 30a of the intermediate room 30. The floor surface 40a of the terrace 40 is white.

[0034] <Main structure> As shown in FIG. 1 , the building 10 has first tubular columns 13 and first beams 14 as the skeleton of the main room 20. The first tubular columns 13 are arranged at intervals along an edge portion along the longitudinal direction of the main room 20, the edge portion being located on the side of the intermediate room 30. The first tubular columns 13 include a first column 13a arranged at the boundary between the first region 21 and the second region 22, and a second column 13b arranged at the boundary between the first region 21 and the third region 23. The first beams 14 extend along the longitudinal direction of the main room 20. The first beams 14 are connected to the first tubular columns 13.

[0035] The building 10 has a second tubular column 15, a second beam 16, and a slope beam 17 as the skeleton of the intermediate room 30. The second tubular column 15 includes a first inner column 15a and a second inner column 15b. The first inner column 15a and the second inner column 15b are arranged at a distance from each other along an edge portion of the intermediate chamber 30 that runs along the longitudinal direction of the intermediate chamber 30 and that faces the main chamber 20. The first inner column 15a is aligned with the first column 13a in the short direction of the intermediate chamber 30. The second inner column 15b is aligned with the second column 13b in the short direction of the intermediate chamber 30. The second tubular column 15 further includes two other outer columns 15c. The two outer columns 15c are arranged at a distance from each other along an edge portion of the intermediate chamber 30 that runs along the longitudinal direction of the intermediate chamber 30 and that faces the outdoors.

[0036] The second beam 16 extends along the longitudinal direction of the intermediate room 30. The second beam 16 includes an inner beam 16a and an outer beam 16b. The inner beam 16a is connected to the second tubular column 15 arranged along the edge of the intermediate room 30 along the longitudinal direction, on the side of the main room 20. The inner beam 16a connects the first inner column 15a and the second inner column 15b. The outer beam 16b is connected to the second tubular column 15 arranged along the edge of the intermediate room 30 along the longitudinal direction, on the side of the outdoor area. The outer beam 16b connects the two outer columns 15c. The gradient beam 17 extends along the lateral direction of the intermediate room 30. The gradient beam 17 is supported by the inner beam 16a and the outer beam 16b.

[0037] The building 10 is provided with a partition wall 18 that separates the third area 23 of the main room 20 from the intermediate room 30. The partition wall 18 is configured to include a second pillar 13b and a second inner pillar 15b. The partition wall 18 includes a first wall surface 18a that covers the second pillar 13b from the main room 20 side, and a second wall surface 18b that covers the second inner pillar 15b from the intermediate room 30 side.

[0038] The building 10 has a hanging wall 19 hanging from the ceiling at the boundary between the main room 20 and the intermediate room 30. The hanging wall 19 includes a third wall surface 19a that covers the first beam 14 from the main room 20 side, and a fourth wall surface 19b that covers the inner beam 16a from the intermediate room 30 side.

[0039] [Operation of this embodiment] The operation of this embodiment will be described. The main chamber 20 has a first region 21, a second region 22 aligned with the first region 21, and a third region 23 located on the opposite side of the second region 22 across the first region 21 in the direction in which the first region 21 and the second region 22 are aligned.

[0040] The first area 21 and the second area 22 are separated by a partition wall 24. Therefore, the second area 22 is a space that ensures privacy compared to the first area 21. The third area 23 has an atrium 25 that connects to the second floor 12. Therefore, the third area 23 is a space that feels more open than the first area 21. In this way, the space in the main room 20 changes in the direction in which the first to third areas 21 to 23 are lined up.

[0041] On the other hand, an intermediate room 30 is provided on the first floor 11, which is connected to the first area 21 and the second area 22. Therefore, the first area 21 and the second area 22 are connected via the intermediate room 30. Therefore, the main room 20 becomes an integrated space with a rich variety.

[0042] [Effects of this embodiment] The effects of this embodiment will be described. (1) The main room 20 has first to third areas 21 to 23. The first area 21 and the second area 22 are separated by a partition wall 24. Furthermore, the third area 23 has an atrium 25. As a result, the space in the main room 20 changes in the direction in which the first to third areas 21 to 23 are arranged. Meanwhile, an intermediate room 30 that connects the first area 21 and the second area 22 is provided on the first floor 11. As a result, the first area 21 and the second area 22 are connected via the intermediate room 30. Therefore, the main room 20 becomes an integrated space with a rich variety.

[0043] (2) The second floor surface 22a of the second area 22 is located at a lower position than the first floor surface 21a of the first area 21. Therefore, the main room 20 has a change in space in the vertical direction. Furthermore, since the line of sight of users in the second area 22 is lower than the line of sight of users in the first area 21, it becomes difficult for the line of sight of users in the second area 22 to meet the line of sight of users in the first area 21. Therefore, the privacy of the second area 22 is improved.

[0044] The second ceiling 22b of the second area 22 is located at a lower position than the first ceiling 21b of the first area 21. Therefore, the entire second area 22 becomes a space that is located one step lower than the first area 21. As a result, the brightness of the second area 22 becomes darker than the brightness of the first area 21, which also causes a change in brightness in the main room 20. Furthermore, users of the second area 22 are more likely to feel as if they are being enveloped, which improves the comfort of the second area 22.

[0045] The third area 23 is provided with a skip floor 26 that is located higher than the first floor surface 21a and lower than the floor surface 12a of the second floor 12. Therefore, the main room 20 has a spatial change in the height direction.

[0046] (3) In the third area 23, a surrounding wall 28 is provided surrounding the skip-floor 26. This improves the privacy of the skip-floor 26. In addition, the upper surface 28a of the surrounding wall 28 is located lower than the first ceiling 21b of the first area 21. This ensures a connection between the space inside the surrounding wall 28 and the first area 21.

[0047] (4) The intermediate room 30 connects the main room 20 to the outdoors. The intermediate room 30 is separated from the outdoors by a French window 31. The ceiling 30b of the intermediate room 30 is a sloped ceiling that decreases in height from the main room 20 toward the outdoors. With this configuration, the intermediate room 30 functions as a veranda space. Furthermore, because the ceiling 30b of the intermediate room 30 is a sloped ceiling, the intermediate room 30 can be made into an open space.

[0048] (5) The building 10 has a roof 32 that covers the intermediate room 30. The roof 32 has eaves 32a and eaves soffit 32b that are located on the outdoor side of the French window 31. The roof 32 is a sloped roof that decreases in height from the main room 20 toward the outdoor side. The slope of the roof 32 is the same as the slope of the ceiling 30b of the intermediate room 30. The eaves soffit 32b is arranged so that the outdoor side end 32c of the eaves soffit 32b is located higher than the outdoor side end 30c of the ceiling 30b of the intermediate room 30.

[0049] According to this configuration, the amount of light entering the intermediate room 30 can be increased compared to when the ceiling 30b of the intermediate room 30 is extended up to the eaves of the roof 32. (6) A hanging wall 19 hanging from the ceiling is provided at the boundary between the main room 20 and the intermediate room 30. With this configuration, the amount of light reflected by the floor surface 30a of the intermediate room 30 that enters the main room 20 can be adjusted by the hanging wall 19. In particular, since the floor surface 30a of the intermediate room 30 in this embodiment is white, it is easy to reflect light.

[0050] (7) The partition wall 24 is provided with a plurality of through holes 24a that connect the first area 21 and the second area 22. With this configuration, the connection between the first area 21 and the second area 22 is maintained, while the line of sight of a user in the first area 21 and the line of sight of a user in the second area 22 are less likely to meet.

[0051] (8) The first floor surface 21a of the first area 21 is made of flooring material. The second floor surface 22a of the second area 22 is plastered. Carpet is laid on the floor surface of the skip floor 26. As such, the main room 20 is varied in appearance due to the different floor surface materials in each area.

[0052] (9) The third area 23 is provided with an atrium 25 that connects to the second floor 12. Therefore, the brightness of the third area 23 can be adjusted by adjusting the number and arrangement of windows on the second floor 12. (10) When creating a veranda space with a sloped ceiling, it is possible to create eaves by attaching arms to the first tubular column 13. In this case, the length of the arms is limited from the standpoint of strength, making it difficult to create a large space. In contrast, in this embodiment, the second tubular column 15 is provided as the frame of the intermediate room 30. This allows the intermediate room 30 to be a large space with a sloped ceiling.

[0053] (11) The partition wall 18 can collectively hide the first tubular column 13, which is the frame of the main chamber 20, and the second tubular column 15, which is the frame of the intermediate chamber 30. In addition, the partition wall 18 can separate the third area 23 from the intermediate chamber 30.

[0054] (12) The floor surface 30a of the intermediate room 30 and the floor surface 40a of the terrace 40 are at the same height. In addition, the floor surface 30a of the intermediate room 30 and the floor surface 40a of the terrace 40 have the same finish. This creates continuity between the floor surface 30a of the intermediate room 30 and the floor surface 40a of the terrace 40. This makes it easier for users of the intermediate room 30 to get the impression that they are outdoors while indoors.

[0055] <Example of change> The above-described embodiment is an example of a form that the building 10 can take, and is not intended to limit the form. The building 10 can take a form different from the form exemplified in the above-described embodiment. Examples of such a form include a form in which part of the configuration of the embodiment is replaced, modified, or omitted, or a form in which a new configuration is added to the embodiment. Modified examples of the embodiment are shown below.

[0056] · The building 10 is not limited to a detached house. The first area 21 may be used for purposes other than a dining kitchen. The second area 22 may be used for purposes other than a living room.

[0057] The third area 23 may be used for purposes other than a second living room. The terrace 40 does not have to be provided outdoors. In the above embodiment, the intermediate chamber 30 is connected to the first region 21 and the second region 22, but this is not limited thereto. The intermediate chamber 30 may be connected to at least two of the first to third regions 21 to 23. "At least two of the first to third regions 21 to 23" refers to "the two regions of the first region 21 and the second region 22," "the two regions of the second region 22 and the third region 23," "the two regions of the third region 23 and the first region 21," or "the three regions of the first to third regions 21 to 23."

[0058] The second floor surface 22a of the second area 22 may be provided at the same height as the first floor surface 21a of the first area 21, or at a higher position than the first floor surface 21a. The second ceiling 22b of the second area 22 may be provided at the same height as the first ceiling 21b of the first area 21, or at a higher position than the first ceiling 21b.

[0059] The third area 23 does not necessarily need to have a skip floor 26. The third region 23 does not necessarily have to be provided with the surrounding wall 28. The upper surface 28a of the surrounding wall 28 may be provided at the same height as the first ceiling 21b or at a position higher than the first ceiling 21b.

[0060] The ceiling 30b of the intermediate room 30 does not have to be a sloped ceiling, but may be a ceiling that extends horizontally. The roof 32 may not be a sloped roof, but may be a roof that extends horizontally.

[0061] The roof 32 does not have to have the eaves 32a and the soffit 32b. The slope of the roof 32 does not have to be the same as the slope of the ceiling 30b of the intermediate room 30. The eaves soffit 32b does not have to be arranged so that the outdoor end 32c of the eaves soffit 32b is positioned higher than the outdoor end 30c of the ceiling 30b of the intermediate room 30. The hanging wall 19 does not have to be provided at the boundary between the main chamber 20 and the intermediate chamber 30.

[0062] The partition wall 24 does not necessarily have to have a plurality of through holes 24a. The partition wall 24 is not limited to a hollow block. The partition wall 24 may be a lattice wall or a louvered wall.

[0063] The partition wall 24 does not have to connect the second floor surface 22a and the second ceiling 22b. For example, a gap may be provided between the partition wall 24 and the second ceiling 22b. The first floor surface 21a does not have to be made up of multiple flooring materials.

[0064] The second floor surface 22a does not have to be plastered. The floor surface of the skip floor 26 does not need to be carpeted. When the difference in height between the second floor surface 22a of the second area 22 and the floor surface 30a of the intermediate room 30 is small, the stairs 29 of the second area 22 may be omitted.

[0065] In the second area 22, a slope may be provided instead of the stairs 29 as a means for connecting the second floor surface 22a and the floor surface 30a of the intermediate room 30. The floor surface 30a of the intermediate room 30 does not have to be plastered.

[0066] The color of the floor 30a of the intermediate chamber 30 may be changed. The floor surface 40a of the terrace 40 does not have to be plastered. The finish of the floor surface 40a of the terrace 40 may be different from the finish of the floor surface 30a of the intermediate room 30.

[0067] The color of the floor surface 40a of the terrace 40 may be changed. The color of the floor surface 40a of the terrace 40 may be different from the color of the floor surface 30a of the intermediate room 30. The floor surface 40a of the terrace 40 does not have to be at the same height as the floor surface 30a of the intermediate room 30.

[0068] This specification discloses the following techniques: [Appendix 1] A building having a first and second floor, the first floor having a main room configured as a space without pillars inside, the main room having a first area, a second area aligned with the first area, and a third area located on the opposite side of the second area across the first area in the direction in which the first and second areas are aligned, the first area and the second area being separated by a partition wall, the third area having an atrium connected to the second floor, and the first floor having an intermediate room connected to at least two of the first area, the second area, and the third area.

[0069] [Appendix 2] In the building described in Appendix 1, the first area has a first floor and a first ceiling, the second area has a second floor located lower than the first floor and a second ceiling located lower than the first ceiling, and the third area has a skip floor located higher than the first floor and lower than the floor of the second floor.

[0070] [Appendix 3] In the building described in Supplementary Note 2, a surrounding wall is provided in the third area to surround the skip-floor, and the upper surface of the surrounding wall is located at a lower position than the first ceiling.

[0071] [Appendix 4] In the building described in Appendix 1, the intermediate room connects the main room to the outdoors, and is separated from the outdoors by a bay window. The ceiling of the intermediate room is a sloped ceiling that decreases in height from the main room to the outdoors.

[0072] [Appendix 5] The building described in Appendix 4 is provided with a roof covering the intermediate room, the roof having eaves and soffit located on the outdoor side of the French window, the roof being a sloped roof that decreases in height from the main room to the outdoor side, the slope of the roof being the same as the slope of the ceiling of the intermediate room, and the soffit being arranged so that the outdoor side end of the eaves soffit is located higher than the outdoor side end of the ceiling of the intermediate room.

[0073] [Appendix 6] In the building described in Supplementary Note 1, a hanging wall hanging from the ceiling is provided at the boundary between the main room and the intermediate room.

[0074] [Appendix 7] In the building described in Supplementary Note 1, the partition wall is provided with a plurality of through holes that connect the first area and the second area. [Explanation of symbols]

[0075] 10...building, 11...first floor, 12...second floor, 12a...floor, 19...drop wall, 20...main room, 21...first area, 21a...first floor, 21b...first ceiling, 22...second area, 22a...second floor, 22b...second ceiling, 23...third area, 24...partition wall, 24a...through hole, 25...atrium, 26...skip floor, 28...enclosure wall, 28a...top, 30...intermediate room, 30b...ceiling, 30c...edge, 31...floor window, 32...roof, 32a...eaves, 32b...eaves top, 32c...edge.

Claims

1. A building having a first floor and a second floor, and a main room configured as a space without pillars inside the first floor, the main chamber has a first region, a second region aligned with the first region, and a third region located on the opposite side of the second region across the first region in a direction in which the first region and the second region are aligned, The first area and the second area are separated by a partition wall, The third area has a void space connected to the second floor, An intermediate room connected to at least two of the first area, the second area, and the third area is provided on the first floor, the main chamber has a main chamber edge portion that is an edge portion extending in a direction in which the first region and the second region are arranged and that is an edge portion close to the intermediate chamber, the intermediate room is located between the main room and the outdoors and connects the main room and the outdoors; The intermediate room and the outdoors are separated by a sliding window, The intermediate room has a sloped ceiling that decreases in height from the main room toward the outdoors, a first intermediate room edge that is an edge extending in the direction in which the first area and the second area are aligned and is an edge close to the main room, and a second intermediate room edge that is an edge extending in the direction in which the first area and the second area are aligned and is an edge close to the outdoors, A first pillar, a second pillar, and a first beam are provided as a skeleton of the main room, The first pillar and the second pillar are spaced apart along the main chamber edge, the first beam is connected to the first pillar and the second pillar, The intermediate chamber has a structure including a first inner column, a second inner column, two outer columns, an inner beam, an outer beam, and a gradient beam. the first inner pillar and the second inner pillar are spaced apart along the first intermediate chamber edge; the two outer posts are spaced apart along the second intermediate chamber edge; the inner beam is connected to the first inner column and the second inner column; the outer beam is connected to the two outer columns; A building in which the gradient beam is supported by the inner beam and the outer beam.

2. the first area has a first floor and a first ceiling; the second area has a second floor surface provided at a position lower than the first floor surface and a second ceiling provided at a position lower than the first ceiling, The building according to claim 1, wherein the third area includes a skip-floor located at a position higher than the first floor surface and lower than the floor surface of the second floor.

3. The third area is provided with a surrounding wall surrounding the skip floor, The building according to claim 2 , wherein the upper surface of the surrounding wall is located lower than the first ceiling.

4. a roof covering the intermediate chamber; The roof has an eaves and a soffit located on the outdoor side of the bay window, The roof is a sloped roof whose height decreases from the main room toward the outside, The slope of the roof is the same as the slope of the sloped ceiling of the intermediate room, The building according to claim 1, wherein the eaves soffit is arranged so that the outdoor end of the eaves soffit is positioned above the outdoor end of the sloped ceiling of the intermediate room.

5. 2. The building according to claim 1, wherein a hanging wall hanging from the ceiling is provided at the boundary between the main room and the intermediate room.

6. The building according to claim 1 , wherein the partition wall has a plurality of through holes that connect the first area and the second area.

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