Two story multiple dwelling house by wood frame construction method

Abstract

To provide a two storied multiple dwelling house of a new floor plan by a wood frame construction method suitable for a family layer to live on a first floor and a single person to live on a second floor while suppressing a construction cost.SOLUTION: A two story multiple dwelling house by a wood frame construction method includes first to fifth dwelling units having first to fifth entrances positioned on one side in the depth direction of the multiple dwelling house, respectively. The first dwelling unit, the second dwelling unit, and the first to fifth entrances are located on the first floor. The third to fifth dwelling units are located on the second floor except for the third to fifth entrances and the stairs from the third to fifth entrances to the second floor. The first dwelling unit and the second dwelling unit are arranged in a width direction orthogonal to the depth direction. The third to fifth dwelling units are arranged in the width direction. A third dwelling unit and a half of a fourth dwelling unit are positioned on the first dwelling unit. A half of the fourth dwelling unit and the fifth dwelling unit are positioned on the second dwelling unit. The bearing wall line of the first floor and the bearing wall line of the second floor partially overlap with each other at a place other than the outline of the multiple dwelling house in a plan view.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a two-story apartment building constructed using a wood-frame construction method. [Background technology]

[0002] Wooden buildings constructed using wood-frame construction (e.g., 2x4 construction) have been widely known (see, for example, Patent Document 1 below). Examples of two-story apartment buildings constructed using such wood-frame construction include rental apartment buildings in which the entrances for the first-floor and second-floor units are located on the first floor. This type of apartment building typically has two dwelling units on each of the first and second floors (four dwelling units in total). In this case, two dwelling units (all the same size) on the first floor are basically located above two dwelling units (all the same size) on the second floor. However, since the first floor needs to have enough space for the entrances of all four dwelling units, the second floor has more living space than the first floor. Therefore, families typically live on the second floor, and single people often live on the first floor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 6-2358 Summary of the Invention [Problem to be solved by the invention]

[0004] For families with small children, living on the second floor means they need to be concerned about the impact of everyday noise on the first floor. For this reason, there is a demand for families to live on the first floor. For this reason, it is expected that two-story apartment buildings with new floor plans using frame construction methods, suitable for families to live on the first floor and single people to live on the second floor, will be provided while keeping construction costs down. [Means for solving the problem]

[0005] The present invention has been made to solve at least part of the above-mentioned problems, and can be realized, for example, in the following forms.

[0006] According to a first aspect of the present invention, there is provided a two-story apartment building constructed using wood-frame construction. The apartment building includes first to fifth dwelling units, each having a first to fifth entrance located on one side of the apartment building in the depth direction. The first dwelling unit, the second dwelling unit, and the first to fifth entrances are located on the first floor. The third to fifth dwelling units are located on the second floor, excluding the third to fifth entrances and the stairs leading from the third to fifth entrances to the second floor. The first dwelling unit and the second dwelling unit are lined up in the width direction, which is perpendicular to the depth direction. The third to fifth dwelling units are lined up in the width direction. The third dwelling unit and half of the fourth dwelling unit are located above the first dwelling unit. Half of the fourth dwelling unit and the fifth dwelling unit are located above the second dwelling unit. The bearing wall line of the first floor and the bearing wall line of the second floor partially overlap in a plan view, except for the outer perimeter of the apartment building.

[0007] This apartment complex can accommodate two family-friendly dwelling units on the first floor and three single-person dwelling units on the second floor. By increasing the depth of the apartment complex compared to conventional apartment complexes, the two first-floor dwelling units can be made spacious enough for a family. Furthermore, compared to conventional apartment complexes with two first-floor and two second-floor dwelling units, the placement of bearing walls using frame construction is more complex, resulting in increased costs. However, with the first type of apartment complex, the bearing wall lines on the first floor and the second floor partially overlap in plan view outside the exterior of the apartment complex, simplifying the placement of bearing walls and reducing construction costs. The exterior of the apartment complex may be designed so that the bearing wall lines on the first floor and the second floor coincide as closely as possible. Furthermore, although the overall construction costs will increase by making the depth of the apartment complex larger than before, three dwelling units can be secured on the second floor, so the overall profitability of rental properties will not decrease significantly.

[0008] According to the second aspect of the present invention, in the first aspect, the first to fifth entrances are concentrated in the central part of the apartment building in the width direction, so that the first entrance, the third to fifth entrances, and the second entrance are lined up adjacent to each other in this order. This aspect increases the area where the bearing wall lines of the first floor and the second floor overlap, further reducing construction costs.

[0009] According to the third aspect of the present invention, the bathroom, washroom, and toilet of each of the third and fifth dwelling units in the second aspect are located within the second floor area corresponding to the first floor area where the first through fifth entrances, the entrance porches corresponding to the first through fifth entrances, and the stairwell where the staircase is located are located. This aspect allows the first through fifth entrances to be centrally located, and the wet areas (i.e., the bathroom, washroom, and toilet) of the third and fifth dwelling units to be located in the area above. While the conventional design, in which the wet areas are perfectly aligned between the first and second floors, cannot be achieved because the first floor has two dwelling units and the second floor has three, the wet areas below the third and fifth dwelling units are not habitable rooms for the first and second dwelling units (in other words, the first through fifth entrances and entrance porches (non-habitable rooms) are included), preventing the noise of the wet areas from affecting the floors below. Furthermore, by locating the bathroom in the fourth dwelling unit in approximately the same location as the bathroom in the first or second dwelling unit, it is possible to prevent noise from the bathroom in the fourth dwelling unit from affecting those living downstairs, just as in the past.

[0010] According to a fourth aspect of the present invention, in any one of the first to third aspects, the parting walls between the first and second dwelling units are partially located on the bearing wall line of the first floor in plan view, and the parting walls between the third to fifth dwelling units are partially located on the bearing wall line of the second floor in plan view. This aspect can further reduce construction costs. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic first floor plan view of an apartment building according to a first embodiment of the present invention. [Figure 2]FIG. 2 is a schematic plan view of the second floor of the apartment building according to the first embodiment. [Figure 3] FIG. 1 is a schematic cross-sectional view of an apartment building. [Figure 4] This is a diagram showing the load-bearing wall line sections and load-bearing walls on the first and second floors. [Figure 5] This diagram highlights the overlapping areas of the shear wall lines on the first and second floors. [Figure 6] This diagram highlights the overlapping areas of the load-bearing walls on the first and second floors. [Figure 7] This is a diagram showing the first floor load-bearing wall line and the partition wall. [Figure 8] This is a diagram showing the overlapping of the second floor load-bearing wall line and the partition wall. [Figure 9] FIG. 10 is a schematic first floor plan view of an apartment building according to a second embodiment. [Figure 10] FIG. 10 is a schematic plan view of the second floor of an apartment building according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] A first exemplary embodiment of the present invention will now be described. FIGS. 1 and 2 show schematic plan views of an apartment building 10 according to this first embodiment. The apartment building 10 is a two-story apartment building constructed using wood-frame construction and is intended for rental use. As shown in FIGS. 1 and 2, the apartment building 10 includes first to fifth dwelling units 20a to 20e, each having a first to fifth entrance 21a to 21e. The first dwelling unit 20a, the second dwelling unit 20b, and the first to fifth entrances 21a to 21e are located on the first floor. The third to fifth dwelling units 20c to 20e are located on the second floor, excluding the third to fifth entrances 21c to 21e and the stairs leading from the third to fifth entrances to the second floor.

[0013] The first dwelling unit 20a and the second dwelling unit 20b have a 2LDK layout for families. The third to fifth dwelling units 20c-20e have a 1LDK layout for single people. The first dwelling unit 20a and the second dwelling unit 20b are lined up in the width direction (short side) perpendicular to the depth direction (longitudinal direction) of the apartment building 10, and are arranged line-symmetrically. The third to fifth dwelling units 20c-20e are lined up in that order in the width direction.

[0014] The third dwelling unit 20c and half (half in the width direction) of the fourth dwelling unit 20d are located above the first dwelling unit 20a, and half (the remaining half in the width direction) of the fourth dwelling unit 20d and the fifth dwelling unit 20e are located above the second dwelling unit 20b. The third dwelling unit 20c and the fifth dwelling unit 20e are arranged symmetrically with the fourth dwelling unit 20d between them.

[0015] As shown in FIG. 1, on the first floor, the first through fifth entrances 21a-21e are located on one side in the depth direction. More specifically, the first through fifth entrances 21a-21e are concentrated in the central portion of the apartment building 10 in the width direction, with the first entrance 21a, the third through fifth entrances 21c-21e, and the second entrance 21b lined up adjacent to each other in that order. An entrance porch 22 is located in front of the first through fifth entrances 21a-21e. When viewed from the entrance porch 22 side, stairwells 23c-23e, where stairs leading up to the second floor are located, are located beyond the third through fifth entrances 21c-21e, respectively.

[0016] As shown in Fig. 1, on the first floor, bathroom 24a and washroom 25a of first dwelling unit 20a and bathroom 24b and washroom 25b of second dwelling unit 20b are located approximately in the center in the depth and width directions of apartment building 10. As shown in Fig. 2, on the second floor, bathroom 24c, washroom 25c, and toilet 26c of third dwelling unit 20c and bathroom 24e, washroom 25e, and toilet 26e of fifth dwelling unit 20e are located on one side in the depth direction (the entrance side) of apartment building 10 and approximately in the center in the width direction.

[0017] FIG. 3 is a schematic cross-sectional view of the apartment building 10. FIG. 3 shows a cross-section along the depth direction, passing through the bathroom 24c and washroom 25c of the third dwelling unit 20c. As can be seen by comparing FIGS. 1 and 2, or as can be seen from FIG. 3, the bathrooms 24c, 24e, washrooms 25c, 25e, and toilets 26c, 26e of the third dwelling unit 20c and the fifth dwelling unit 20e are located in the second-floor area corresponding to the first-floor area where the first through fifth entrances 21a-21e, the entrance porch 22, and the stairwells 23c-23e are located. As can be seen by comparing FIGS. 1 and 2, the bathroom 24d, washroom 25d, and toilet 26d of the fourth dwelling unit 20d are located in a planar position that generally corresponds to the bathroom 24b and washroom 25b of the second dwelling unit 20b. This allows the planar position of the bathroom in the fourth dwelling unit 20d to be approximately the same as that of the bathroom in the second dwelling unit 20b, thereby preventing noise from the bathroom in the fourth dwelling unit 20d from affecting those living downstairs.

[0018] Figure 4 shows the shear wall line sections and shear walls on the first and second floors. The dotted "x" marks in the figure indicate shear wall line sections (the same applies to Figures 5 to 8 described below). The solid rectangles in the figure indicate shear walls. Figure 5 highlights with bold lines the common parts of the shear wall lines (the perimeter lines of the shear wall line sections) corresponding to the shear wall line sections shown in Figure 4 that are shared between the first and second floors. As shown in Figure 5, the shear wall lines of the first and second floors overlap in a plan view over most of the exterior of the apartment building 10. They also overlap in areas other than the exterior of the apartment building 10 at overlapping parts 41 to 47. Figure 6 highlights with hatching the common parts of the shear walls set according to the shear wall line sections shown in Figure 4 that are shared between the first and second floors. The scale of Figures 4 to 6 is half that of Figures 1 and 2.

[0019] Figures 7 and 8 are diagrams in which the bearing wall lines for the first and second floors shown in Figure 5 are superimposed on the parting walls (partitions between dwelling units, shown by hatching) for the first and second floors shown in Figures 1 and 2, for corresponding floors. As shown in the figures, the bearing wall lines and the parting walls overlap at overlapping portions 51 to 58. This configuration can further reduce construction costs.

[0020] The above-described apartment building 10 can provide two family-oriented dwelling units (first dwelling unit 20a and second dwelling unit 20b) on the first floor and three single-person dwelling units (third through fifth dwelling units 20c-20e) on the second floor. For the two first-floor dwelling units, the apartment building's depth (approximately 12,300 mm in this embodiment) is increased from conventional dimensions (e.g., 9,100 mm), ensuring ample space for families. Furthermore, as described above, the bearing wall lines on the first and second floors overlap at overlapping portions 41-47, even outside the exterior of the apartment building 10. This avoids the complex layout of bearing walls in a frame construction method and reduces costs. In this embodiment, as described above, the bearing wall lines and parting walls also overlap at overlapping portions 51-58, further reducing construction costs.

[0021] Furthermore, according to the apartment building 10, the first through fifth entrances 21a are concentrated in the central portion of the apartment building 10 in the width direction, so that the overlapping portion between the load-bearing wall lines of the first floor and the second floor can be increased (for example, overlapping portion 44 in FIG. 5), further reducing construction costs. Furthermore, in this embodiment, with the aim of providing above-floor piping for the second floor plumbing and making it barrier-free, the floor joists of the bathrooms 24c, 24e, washrooms 25c, 25e, and toilets 26c, 26e are reduced in size and supported by parting walls concentrated on the first floor, thereby reducing the structural burden in these areas and further reducing construction costs.

[0022] Furthermore, in the apartment building 10, the first through fifth entrances 21a are located together, with the wet areas of the third dwelling unit 20c and the fifth dwelling unit 20e located in the area above them. Therefore, because the number of dwelling units differs between the first and second floors, it is not possible to carry out a conventional design in which the locations of the wet areas are perfectly aligned between the first and second floors. However, because the areas below the wet areas of the third dwelling unit 20c and the fifth dwelling unit 20e do not become habitable rooms for the first dwelling unit 20a and the second dwelling unit 20b (in other words, the first through fifth entrances 21a-21e and the entrance porch 22 (non-habitable room)), it is possible to prevent the noise from the wet areas from affecting the floors below.

[0023] The above-described apartment building 10 is not limited to the five dwelling units, the first to fifth dwelling units 20a, shown in Figures 1 and 2, but can be modified to include multiple units, each consisting of five dwelling units. In this case, the multiple units are lined up and connected in the width direction.

[0024] The second embodiment will be described below. Figures 9 and 10 show schematic plan views of an apartment building 100 according to the second embodiment. The apartment building 100 includes a first unit U1 and a second unit U2. The first unit U1 and the second unit U2 are arranged side by side in the width direction. The first unit U1 has the same structure as the five dwelling units shown in Figures 1 and 2. The second unit U2 is shorter in width than the first unit U1 and has one dwelling unit on each of the first and second floors. The second unit U2 has the same floor plan on the first and second floors, except for the entrance area. Therefore, the bearing wall lines on the first and second floors can be the same (i.e., this is a conventional construction method). The apartment building 100 allows for flexible design based on site conditions so as not to waste land available for construction. The apartment building 100 may be modified into an apartment building in which multiple first units U1 are connected in the width direction and a single second unit U2 is connected to one end of the multiple first units U1 in the width direction.

[0025] Although the embodiments of the present invention have been described above, the above-described embodiments of the invention are intended to facilitate understanding of the present invention and are not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention includes equivalents thereof. Furthermore, any combination or omission of each component or step described in the claims and specification is possible within the scope of solving at least part of the above-described problems or achieving at least part of the effects.

[0026] For example, the partitions and shear wall line sections of the above-mentioned apartment building 10 and apartment building 100 are merely examples, and can be modified into any form as long as the shear wall line of the first floor and the shear wall line of the second floor partially overlap in a place other than the outer periphery of the apartment building 10 (or first unit U1) when viewed in plan. [Explanation of symbols]

[0027] 10,100...Apartment housing 20a...First dwelling unit 20b...Second dwelling unit 20c...Third dwelling unit 20d...Fourth dwelling unit 20e...5th dwelling unit 21a...First entrance 21b...Second entrance 21c...Third Entrance 21d...Fourth Entrance 21e...5th Entrance 22...Entrance porch 23c,23d,23e...Staircase 24a,24b,24c,24d,24e...Bathroom 25a,25b,25c,25d,25e...washroom 26c, 26d, 26e...toilets 41~47...Overlapped sections of the shear wall lines on the first and second floors 51~58...Overlapped area with shear wall boundary wall U1...First unit U2...Second Unit

Claims

1. It is a two-story apartment building constructed using frame wall construction, The housing complex comprises first to fifth dwelling units each having a first to fifth entrance located on one side in a depth direction of the housing complex; The first dwelling unit, the second dwelling unit, and the first to fifth entrances are located on the first floor; The third to fifth dwelling units are located on the second floor, except for the third to fifth entrances and the stairs leading from the third to fifth entrances to the second floor, The first dwelling unit and the second dwelling unit are aligned in a width direction perpendicular to the depth direction, The third to fifth dwelling units are aligned in the width direction, The third dwelling unit and half of the fourth dwelling unit are located above the first dwelling unit; Half of the fourth dwelling unit and the fifth dwelling unit are located above the second dwelling unit; The bearing wall line of the first floor and the bearing wall line of the second floor partially overlap in a plan view outside the outer perimeter of the apartment building. apartment complex.

2. The apartment building according to claim 1, The first to fifth entrances are arranged in a central portion of the apartment building in the width direction so that the first entrance, the third to fifth entrances, and the second entrance are arranged adjacent to each other in this order. apartment complex.

3. The apartment building according to claim 2, The bathroom, washroom, and toilet of each of the third and fifth dwelling units are located within a second floor area corresponding to the first floor area where the first to fifth entrances, the entrance porches corresponding to the first to fifth entrances, and the stairwell where the staircase is located are located. apartment complex.

4. The apartment building according to any one of claims 1 to 3, The parting wall between the first dwelling unit and the second dwelling unit is partially located on the bearing wall line of the first floor in a plan view; The parting walls of the third to fifth dwelling units are partially located on the bearing wall line of the second floor in plan view. apartment complex.

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