JP7795936B2 - Apartment building structure - Google Patents

Description

The present invention relates to the building structure of an apartment building in which each floor has a common corridor and dwelling units facing the common corridor.

In an apartment building, facility piping for supplying and discharging water, sewage, electricity, gas, etc. is provided to a plurality of dwelling units provided on each floor. Such facility piping is provided by branching off from a main vertical piping provided across the upper and lower floors, with piping connected to each dwelling unit. For example, Patent Document 1 discloses a configuration in which a vertical piping space is provided that penetrates each floor along a plurality of dwelling units lined up on upper and lower floors, and the facility piping of each dwelling unit is connected to the vertical piping provided in the vertical piping space.
In such a configuration, a meter box containing meters indicating the amount of water, sewage, electricity, gas, etc. used is provided in the vertical piping space.
In such a configuration, it is necessary to provide vertical piping space for each dwelling unit, which increases the proportion of vertical piping space to the total floor area of the floor, and therefore there is a limit to how much space can be made available in the dwelling units.

In addition, Patent Document 2 discloses a configuration that includes a main vertical pipe installed in the common area of a building, an in-dwelling lead-in pipe installed in the dwelling area of each floor, and a horizontal lead-in pipe connecting the main vertical pipe to the in-dwelling lead-in pipe. In this configuration, the meter box space is provided large enough to correspond to each dwelling unit, at the boundary between the common area and the dwelling area, so that it connects vertically across the floors.
In the configuration disclosed in Patent Document 2, the space that could be used as a dwelling unit is reduced by the space of the meter boxes that are installed so as to connect vertically across floors.

Patent document 3 also discloses a configuration in which the equipment piping of the dwelling units is brought out below the corridor floor slab of the common corridor, and collective equipment piping to which the equipment piping of each floor is connected is covered by the corridor wall material on the side wall side of the atrium section.
In a configuration such as that disclosed in Patent Document 3, if a meter box is to be installed, the meter box will normally be installed between the dwelling unit and the common corridor, as in Patent Document 2. Therefore, as in Patent Document 2, the space that can be used as a dwelling unit will be narrowed by the area where the meter box is installed.
In apartment buildings, there is a demand to maximize the usable space in each dwelling unit.

Japanese Patent Application Laid-Open No. 2001-254413 Patent No. 6596305 JP 2018-71160 A

The problem that this invention aims to solve is to provide a building structure for an apartment building that can increase the usable space in each dwelling unit.

The inventors came up with the present invention by noticing that in the building structure of an apartment building, by placing a main vertical pipe in the common facility space on each floor, and installing horizontal pipes below the floor slab of the common corridor, and then installing dwelling unit pipes that connect to the horizontal pipes, it is not necessary to install a main vertical pipe for each dwelling unit, and the space required for piping is reduced, so that only a meter box can be installed adjacent to the entrance, and the space above the meter box can be used as a storage room or dwelling unit space.
In order to solve the above problems, the present invention employs the following means.
In other words, the building structure of an apartment building of the present invention is a building structure of an apartment building having a common corridor on each floor and dwelling units facing the common corridor, and the equipment piping of the apartment building comprises a main vertical pipe that runs through the common equipment space on each floor from upper to lower floors, a horizontal pipe that is connected to the main vertical pipe and is installed below the floor slab of the common corridor, and dwelling unit piping that connects the horizontal pipe to the dwelling units, and a meter box is installed adjacent to the entrance of each dwelling unit, and the above of the meter box is either a storage room or dwelling unit space.
With this configuration, the dwelling unit piping is connected to a horizontal pipe installed below the floor slab of the common corridor. The horizontal pipe is connected to a main vertical pipe that runs through the common space between the upper and lower floors. Therefore, there is no need to install a main vertical pipe for each dwelling unit.
In addition, the horizontal pipes to which the dwelling unit piping is connected are installed below the floor slab of the common corridor, so the connection between the dwelling unit piping and the horizontal pipes can be located away from the dwelling units, simplifying and streamlining the piping around the dwelling units.
The above effects work together to reduce the space required for piping on each floor.
However, even in this case, a meter box must be installed for each dwelling unit's piping. In contrast, the above-mentioned configuration reduces the space required for piping, so only the lower part adjacent to the entrance is used as a meter box, and the reduced, open space can be used as a storage room or dwelling space. In this way, the usable space in the dwelling unit can be expanded.

In one aspect of the present invention, the horizontal piping connects the main vertical piping and the dwelling piping on a specific floor, and the facility piping further includes a secondary vertical piping that extends vertically from the horizontal piping to a floor other than the specific floor and is connected to the dwelling piping on the other floor.
With this configuration, horizontal pipes connecting the dwelling unit piping and the main vertical pipes in the living space are installed only on specific floors, rather than on all floors. This reduces the piping space required for installing horizontal pipes on floors other than the specific floors, making the living space larger. In addition, by installing horizontal pipes under the floor slab of the common corridor, it is possible to reduce the drainage noise generated inside the dwelling unit piping for drainage pipes within each floor of the dwelling, ensuring a high-quality living environment.

The building structure of an apartment building of the present invention is a building structure of an apartment building having a common corridor on each floor and dwelling units facing the common corridor, and the equipment piping of the apartment building comprises common piping including a main vertical piping that passes through the common equipment space on each floor from upper to lower floors, and dwelling unit piping that passes from the dwelling unit, passing below the floor slab of the common corridor, and is connected to the common piping in the common equipment space, and the meter box of each dwelling unit is installed in the common equipment space.
With this configuration, the meter boxes for all the dwelling units on a floor can be efficiently installed in a centralized shared facility space, which reduces the proportion of the floor area taken up by meter boxes compared to when each dwelling unit has its own separate area for a meter box, thereby increasing the usable space in each dwelling unit.

This invention makes it possible to provide a building structure for an apartment building that can increase the usable space in each dwelling unit.

1 is a plan view showing a schematic configuration of a building structure of an apartment building according to an embodiment of the present invention. FIG. 1 is a schematic vertical cross-sectional view showing an installation mode of facility piping in an apartment building. FIG. 2 is a perspective cross-sectional view of the building structure of the apartment building shown in FIG. 1 . FIG. 10 is a schematic vertical cross-sectional view showing an installation mode of facility piping according to a first modified example of the embodiment of the present invention. FIG. 10 is a schematic vertical cross-sectional view showing an installation mode of facility piping according to a second modified example of the embodiment of the present invention. FIG. 10 is a plan view showing the schematic configuration of a building structure of an apartment building according to a third modified example of an embodiment of the present invention.

In an apartment building, the present invention provides a building structure in which horizontal pipes are installed below the floor slab of a common corridor, and dwelling unit pipes are connected to these horizontal pipes, thereby streamlining the piping near the dwelling units and reducing the space required for the piping. This allows only the lower portion adjacent to the entrance to be used as a meter box, and the reduced, open space can be used as a storage room or dwelling space (embodiment). Furthermore, in this invention, the dwelling unit pipes are extended to the common facility space, and the meter box is placed in the common facility space, allowing for efficient installation of the meter box, reducing the proportion of the meter box's area to the total floor area, thereby increasing the usable space in the dwelling units (third variation of the embodiment).
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, an embodiment for carrying out a building structure for an apartment house according to the present invention will be described based on the drawings.
FIG. 1 shows a plan view illustrating a schematic configuration of a building structure of an apartment house according to an embodiment of the present invention.
As shown in Figure 1, the apartment building 1, in plan view, comprises a core section 2 formed in a part of the apartment building 1, and a column-and-beam structure 3 formed in a part other than the core section 2. In this embodiment, the apartment building 1 is a building having three or more stories and a substantially rectangular cross section.
The core 2 has a rectangular shape in plan view and is generally cylindrical so as to be continuous in the vertical direction. The core 2 can be formed, for example, by a multi-story earthquake-resistant wall 3w. The multi-story earthquake-resistant wall 3w can be formed, for example, by a reinforced concrete structure, a steel braced structure, or the like.
In this embodiment, the core section 2 is located in the center of the apartment building 1 in a plan view. The core section 2 may also be located on the periphery, such as at a corner of the apartment building 1. Multiple core sections 2 may be provided in the apartment building 1. Inside the core section 2, for example, elevators, stairwells, equipment rooms, etc. are located.
The column and beam structure 3 is composed of a plurality of columns and beams (not shown). The column and beam structure 3 is made of steel-framed reinforced concrete, reinforced concrete, steel frame, or the like. The plurality of columns that make up the column and beam structure 3 are provided at appropriate intervals at the corners, periphery, interior, etc. of the apartment building 1. On each floor F, a plurality of beams are installed between adjacent columns and between the columns of the column and beam structure 3 and the core 2. On each floor F of the column and beam structure 3, a floor slab 7 supported by the columns and beams is formed. The floor slab 7 is made of, for example, reinforced concrete.
Here, the specific structures of the core portion 2 and the column-beam frame 3 are not limited in any way.

FIG. 2 is a schematic vertical cross-sectional view showing an installation state of facility piping in an apartment building.
Such an apartment building 1 includes a common facility space 10, a common corridor 20, and a plurality of dwelling units 30.
1 and 2, the common equipment space 10 is set inside the core section 2. In this embodiment, a pipe shaft 11 is provided in the common equipment space 10. The pipe shaft 11 extends continuously in a cylindrical shape so as to penetrate each floor F in the vertical direction.
In this embodiment, the pipe shaft 11 is provided as a single unit, but it may be provided as a plurality of separate units.

The column-and-beam frame 3 is provided with a common corridor 20 and a plurality of dwelling units 30. The common corridor 20 extends, for example, along the periphery of the core part 2 on each floor F. The common corridor 20 may also extend to a part other than the periphery of the core part 2.
The multiple dwelling units 30 are arranged along the common corridor 20. The multiple dwelling units 30 are partitioned by an outer wall 31, an inner wall 32, and a partition wall 33, which are provided on the floor slab 7. The outer wall 31 is formed so as to face the outside of the apartment building 1. The inner wall 32 is formed so as to partition each dwelling unit 30 from the common corridor 20. The partition wall 33 is provided so as to connect the outer wall 31 and the inner wall 32, and partitions adjacent dwelling units 30 along the common corridor 20.
An entrance door 34 is provided on the inner wall 32 for entering and exiting each dwelling unit 30 from the common corridor 20. An alcove 38 is formed in front of the entrance door 34 of each dwelling unit 30, and serves as an area equivalent to an entrance. The alcove 38 refers to the area in front of the entrance door 34 that is recessed toward the inside of the dwelling unit 30. The alcove 38 forms part of the common corridor 20.

FIG. 3 is a perspective cross-sectional view of the building structure of the apartment building shown in FIG.
As shown in Figure 3, at least a portion of the floor within each dwelling unit 30 has a double floor structure comprising a dwelling unit floor slab 35 that forms part of the floor slab 7 and a dwelling unit floor material 36 that is supported above the dwelling unit floor slab 35 at a distance.
The floor of the common corridor 20 comprises a first floor portion 21A and a second floor portion 21B. The first floor portion 21A is formed on the dwelling unit 30 side of the common corridor 20. The second floor portion 21B is formed on the opposite side of the common corridor 20 from the dwelling unit 30. In this embodiment, the first floor portion 21A forms the floor of the alcove 38 of each dwelling unit 30. The first floor portion 21A constitutes part of the floor of the common corridor 20.
The area between the alcoves 38 of two adjacent dwelling units 30 forms a protruding portion 30c that protrudes toward the common corridor 20 relative to the front door 34.
The common corridor 20 is provided with a corridor floor slab 22 that constitutes part of the floor slab 7. The corridor floor slab 22 is connected to the dwelling unit floor slabs 35 on each floor.
The corridor floor slab 22 includes a low floor portion 23, a high floor portion 24, and a wall portion 25.

The low floor section 23 is constructed on the first floor section 21A on the dwelling unit 30 side of the corridor floor slab 22. In this embodiment, the height (top surface height) of the upper surface 23t of the low floor section 23 and the height (top surface height) of the upper surface 35t of the dwelling unit floor slab 35 in each dwelling unit 30 are substantially the same. A floor material 28 supported by support members (not shown) is provided above the low floor section 23. A double floor 26 consisting of the low floor section 23 and the floor material 28 above it is formed on the first floor section 21A on the dwelling unit 30 side of the common corridor 20. Here, "the upper surface heights of the dwelling unit floor slab 35 and the low floor section 23 being substantially the same" means that differences in the upper surface height of the slabs are allowed to the extent that equipment piping can be installed at a constant gradient on the upper surface of each slab from the dwelling unit floor slab 35 to the low floor section 23 via height adjustment materials. Specifically, the dwelling unit floor slab 35 and the low floor section 23 are considered to be approximately the same if the height of their respective top surfaces is within 5 cm.
The high floor section 24 constitutes the second floor section 21B on the opposite side of the common corridor 20 from the dwelling unit 30. The high floor section 24 is constructed at a higher position than the low floor section 23. The upper surface 24t of the high floor section 24 is formed a predetermined distance above the upper surface 23t of the low floor section 23. Furthermore, the lower surface 24b of the high floor section 24 is formed a predetermined distance above the upper surface 23t of the low floor section 23. The second floor section 21B includes a high floor section flooring material 27 provided on the high floor section 24. The high floor section flooring material 27 is formed integrally with the flooring material 28 of the first floor section 21A. The floor surface of the common corridor 20 is formed by the flooring material 28 of the first floor section 21A and the high floor section flooring material 27 of the second floor section 21B.
The wall portion 25 extends in the vertical direction and connects the low floor portion 23 and the high floor portion 24 at the boundary between the first floor portion 21A and the second floor portion 21B. The wall portion 25 is formed continuously on the lower side of the inner wall 32 in areas other than the alcove 38. The height of the wall portion 25, i.e., the length from the upper surface 23t of the low floor portion 23 to the lower surface 24b of the high floor portion 24, is formed to be larger than the diameter of the dwelling unit piping 130, which will be described later.
In this way, the high floor section 24 is connected to the low floor section 23 by a wall section 25 that extends above the low floor section 23 .

The apartment building 1 is equipped with facility piping 100. The facility piping 100 includes, for each dwelling unit 30, water pipes that supply clean water, gas pipes that supply gas, electrical wiring that supply electricity, communication lines such as optical fiber and telephone lines, and drainage pipes that discharge sewage from each dwelling unit 30.
The facility piping 100 includes a common piping 105 and a dwelling unit piping 130 .
The common piping 105 includes a main vertical piping 110 and a horizontal piping 120 .
The main vertical pipe 110 is housed in a pipe shaft 11 in the common equipment space 10. The main vertical pipe 110 is provided to penetrate between the upper and lower floors.
The horizontal pipes 120 are provided on each floor F. The horizontal pipes 120 are connected to the main vertical pipes 110 on each floor F. The horizontal pipes 120 extend in the direction in which the common corridors 20 continue. In other words, the horizontal pipes 120 extend in the direction in which the multiple dwelling units 30 arranged along the common corridor 20 are lined up. The horizontal pipes 120 are arranged below the raised floor section 24 of the common corridor 20, that is, in the ceiling space above the common corridor 20 on the lower floor.

Dwelling unit piping 130 is provided for each dwelling unit 30. The dwelling unit piping 130 connects the horizontal piping 120 to each dwelling unit 30. The dwelling unit piping 130 is arranged from above the dwelling unit floor slab 35, through the double floor 26 of the low floor section 23, through the wall section 25, and below the high floor section 24. More specifically, within each dwelling unit 30, the dwelling unit piping 130 is arranged between the dwelling unit floor slab 35 and the dwelling unit floor material 36 above the dwelling unit floor slab 35. The dwelling unit piping 130 drawn out from each dwelling unit 30 is arranged between the low floor section 23 of the double floor 26 and the floor material 28 in the first floor section 21A on the dwelling unit 30 side of the common corridor 20. Here, since the height of the upper surface 35t of the dwelling unit floor slab 35 and the height of the upper surface 23t of the low floor section 23 are approximately the same, if the dwelling unit piping 130 is a drainage pipe, an appropriate water gradient can be easily ensured from each dwelling unit 30 side toward the common corridor 20 side.
The dwelling unit piping 130 extends from above the low floor section 23 within the double floor 26, through the wall section 25, and below the high floor section 24. The dwelling unit piping 130 is connected to the horizontal piping 120 on the underside of the high floor section 24. Here, in the first floor section 21A, the dwelling unit piping 130 is arranged above the upper surface 23t of the low floor section 23. In the second floor section 21B, the dwelling unit piping 130 is arranged below the lower surface 24b of the high floor section 24. No grooves, recesses, etc. for accommodating a radial portion of the dwelling unit piping 130 are formed in the upper surface 23t of the low floor section 23 or the lower surface 24b of the high floor section 24, and a decrease in rigidity that would be caused by forming grooves, recesses, etc. in the low floor section 23 and the high floor section 24 is avoided.

As described above, the dwelling piping 130 is provided to penetrate the wall portion 25. A hole corresponding to the diameter of the dwelling piping 130 may be provided in the wall portion 25, and the dwelling piping 130 may be installed to penetrate this hole. However, for example, a hole having a diameter sufficiently larger than the diameter of the dwelling piping 130, for example, about three or four times the diameter of the dwelling piping 130, may be provided in the wall portion 25, and the dwelling piping 130 may be inserted through this hole.
In this way, by increasing the diameter of the hole in the wall section 25 through which the dwelling unit piping 130 is inserted and passes, the flexibility in changing the route is improved when it is necessary to change the route of the dwelling unit piping 130, for example, when renovating a dwelling unit.
In this way, when the hole in the wall portion 25 is made sufficiently large, it is desirable to fill the space between the wall surface of the hole in the wall portion 25 and the dwelling unit piping 130 with sound-absorbing material such as glass wool to seal the space between the dwelling unit piping 130 and the hole in the wall portion 25, thereby making it difficult for noise caused by the horizontal piping 120 to be transmitted to the dwelling unit 30.

In each figure, only one piece of equipment piping 100 is shown to be pulled into each dwelling unit 30; however, in reality, multiple sets of equipment piping 100 are arranged for each purpose, such as water pipes, gas pipes, electrical wiring, communication lines, and drainage pipes. That is, the equipment piping 100 includes main vertical pipes 110, horizontal pipes 120, and dwelling piping 130 for water pipes, gas pipes, electrical wiring, communication lines, and drainage pipes, respectively. In addition, when the equipment piping 100 is electrical wiring or communication lines, the electrical wiring or communication lines may be inserted inside a cylindrical pipe, or the wire material that forms the electrical wiring or communication line may itself be referred to as the equipment piping 100.

In the protruding portion 30c of each dwelling unit 30, a meter box 200 and an upper space 250 are provided adjacent to an area corresponding to the entrance of the dwelling unit 30, such as an alcove 38, where the entrance door 34 is provided. The meter box 200 and the upper space 250 are provided one above the other.
The meter box 200 is provided below the upper space portion 250. The meter box 200 houses a meter 201 connected to the dwelling piping 130. The meter 201 is used to measure the amount of water used in the dwelling piping 130, such as water pipes, gas pipes, and electrical wiring. For this reason, multiple meters 201 may be provided within the meter box 200 depending on the type of dwelling piping 130.
Meter connection part 205, which consists of piping or wiring connecting meter 201 and dwelling unit piping 130, is arranged in alcove 38 (second floor part 21B) within double floor 26, between low floor part 23 and floor material 28. As described above, dwelling unit piping 130 is housed in double floor 26 formed on the dwelling unit 30 side of common corridor 20. Therefore, meter connection part 205 can also be arranged within double floor 26, and installation of meter connection part 205 and meter 201 can also be easily performed.
The meter box 200 also has an openable/closable door (not shown). The door (not shown) is opened and closed when an attendant checks the measurement value of the meter 201 (so-called meter reading). The door (not shown) may be provided on the side facing the alcove 38 (first floor portion 21A) or on the side facing the second floor portion 21B.

The upper space 250 is provided above the meter box 200. The upper space 250 may be, for example, a trunk room 250T. The trunk room 250T stores the belongings of the residents of each dwelling unit 30. The trunk room 250T has an openable door (not shown) in the portion facing the common corridor 20. The door (not shown) is opened and closed when the resident takes their belongings in and out. The door (not shown) may be provided on the side facing the alcove 38 (first floor portion 21A) or on the side facing the second floor portion 21B.
Furthermore, the upper space portion 250 may be, for example, a dwelling space 250R. The dwelling space 250R is provided so as to be accessible from the inside of each dwelling unit 30. For this reason, the dwelling space 250R is provided so as to be in communication with the inside of the dwelling unit 30. The use of the dwelling space 250R is not particularly limited, and it may be used as, for example, a storage space, or may be used as a bay window space by providing a window in the part facing the common corridor 20.

The building structure of the apartment building 1 as described above is a building structure of the apartment building 1 having a common corridor 20 and dwelling units 30 facing the common corridor 20 on each floor, and the equipment piping 100 of the apartment building 1 comprises a main vertical piping 110 that penetrates the common equipment space 10 on each floor from upper to lower floors, a horizontal piping 120 that is connected to the main vertical piping 110 and is provided below the floor slab (corridor floor slab) 22 of the common corridor 20, and dwelling unit piping 130 that connects the horizontal piping 120 to the dwelling units 30, and a meter box 200 is provided adjacent to the entrance (alcove) 38 of each dwelling unit 30, and the above of the meter box 200 is either a storage room 250T or a dwelling unit space 250R.
According to this configuration, the dwelling unit piping 130 connected to each dwelling unit 30 is connected to horizontal piping 120 provided below the corridor floor slab 22 of the common corridor 20. The horizontal piping 120 is connected to the main vertical piping 110 that passes through the common equipment space 10 between the upper and lower floors. Therefore, there is no need to provide a main vertical piping 110 for each dwelling unit 30.
Furthermore, since the horizontal piping 120 to which the dwelling unit piping 130 is connected is provided below the corridor floor slab 22 of the common corridor 20, the portion where the dwelling unit piping 130 and the horizontal piping 120 are connected can be provided away from the dwelling units 30. This simplifies and organizes the piping around the dwelling units 30.
The above effects work together to reduce the space required for piping on each floor F.
However, even in this case, a meter box 200 must still be provided for each dwelling unit piping 130. In contrast, in the above-described configuration, the space required for piping is reduced, so only the lower part adjacent to the entrance is provided with a meter box 200, and the reduced, open space is utilized as a trunk room 250T or dwelling space 250R. In this way, the usable space in the dwelling unit 30 can be increased.

In particular, in this embodiment, the meter box 200 is provided on the lower side of a position adjacent to the entrance (alcove) 38 of each dwelling unit 30 .
With this configuration, the meter connection section 205 that connects the dwelling unit piping 130 to the meter box 200 can be shortened, allowing the piping to be organized more appropriately.

In addition, the floor slab (corridor floor slab) 22 of the common corridor 20 comprises a low floor section 23 constructed on the side of the dwelling unit 30, and a high floor section 24 which is provided on the opposite side of the low floor section 23 from the dwelling unit 30 and is connected to the low floor section 23 by a wall section 25 which extends above the low floor section 23, and floor material 28 is provided on the low floor section 23 to form a double floor 26, and horizontal piping 120 is provided below the high floor section 24 so as to run along the common corridor 20, and dwelling unit piping 130 is arranged from above the dwelling unit floor slab 35, through the double floor 26 of the low floor section 23, and through the wall section 25 to below the high floor section 24.
With this configuration, the high floor section 24 is located on the opposite side of the low floor section 23 from the dwelling unit 30, and is therefore located at a distance from the dwelling unit 30. In other words, the horizontal piping 120 located below the high floor section 24 is also located at a distance from the dwelling unit 30, and the dwelling unit piping 130 is extended to and connected to the horizontal piping 120 located at a distance from the dwelling unit 30 in this manner. Therefore, the portion where the dwelling unit piping 130 and the horizontal piping 120 are connected can be efficiently located away from the dwelling unit 30, and the piping in the vicinity of the dwelling unit 30 is further simplified and organized.
Therefore, the usable space in the dwelling unit 30 can be efficiently expanded.

Furthermore, a double floor 26 consisting of a low-floor section 23 and flooring 28 provided on the low-floor section 23 is formed on the dwelling unit 30 side of the common corridor 20. By forming the double floor 26 in the common corridor 20 section, the equipment piping 100 is placed not only on the dwelling unit floor slab 35 within the dwelling unit 30, but also on the low-floor section 23 in the double floor 26 section on the dwelling unit 30 side of the common corridor 20. This facilitates the installation of the meter connection section 205 connected to the dwelling unit piping 130 and the meter 201 in the meter box 200. Furthermore, when rerouting the equipment piping 100 within the dwelling unit 30, the route of the equipment piping 100 can be adjusted not only within the dwelling unit 30 but also in the double floor 26 section of the common corridor 20. This improves flexibility in rerouting the equipment piping 100 when renovating the dwelling unit 30, making it easier to accommodate such rerouting.

(First Modification of the Embodiment)
Next, a first modified example of the building structure of the apartment house shown as the above embodiment will be described with reference to Fig. 4. Fig. 4 is a schematic vertical cross-sectional view showing the installation mode of the facility piping in the building structure of the apartment house in this first modified example. In the apartment house 1 in this first modified example, the piping form of the facility piping 300 is different from that of the facility piping 100 in the above embodiment.

The facility piping 300 includes common piping 305, dwelling unit piping 330, and other floor dwelling unit piping 350.
The common piping 305 includes a main vertical piping 310 , a horizontal piping 320 , and a sub-vertical piping 340 .
The main vertical piping 310 is installed to penetrate the pipe shaft 11 of the common equipment space 10 across the upper and lower floors.
Unlike the above embodiment, the horizontal piping 320 is provided only on the specific floor FS. In this modified example, one of the two floors F is designated as the specific floor FS, and the floor FD below the specific floor FS is a different floor F from the specific floor FS. On the specific floor FS, the horizontal piping 320 is connected to the main vertical piping 310 and is arranged below the raised floor 24 of the common corridor 20.
On the specific floor FS, dwelling unit piping 330 is connected to the horizontal piping 320 for each dwelling unit 30. The dwelling unit piping 330 is arranged from above the dwelling unit floor slab 35, through the double floor 26 of the low floor section 23, through the wall section 25, and below the high floor section 24.
A sub-vertical pipe 340 is connected to the horizontal pipe 320, and extends vertically from the horizontal pipe 320 to a floor F different from the specific floor FS, in this modified example, to the floor FD below the specific floor FS. The sub-vertical pipe 340 is arranged so that it is led from the horizontal pipe 320 on the specific floor FS, penetrates the wall portion 25, and is led out above the dwelling unit floor slab 35, extends vertically, and then reaches the double floor 26 of the floor FD below.
The lower end of the auxiliary vertical piping 340 is connected to another floor dwelling unit piping 350, which is connected to the dwelling unit 30 on the lower floor FD. The other floor dwelling unit piping 350 is arranged from above the dwelling unit floor slab 35 of the dwelling unit 30 on the lower floor FD into the double floor 26 of the low floor section 23. The other floor dwelling unit piping 350 is connected to the auxiliary vertical piping 340 within the double floor 26.

The sub-vertical piping 340 is installed vertically penetrating the meter box 200 and the upper space 250, which are installed adjacent to the entrance of each dwelling unit 30. Here, the sub-vertical piping 340 installed in the upper space 250 is preferably at least one of a water supply pipe and a gas pipe. The sub-vertical piping 340 is preferably the facility piping 300 excluding the drainage pipe, and may be, for example, electrical wiring, communication wiring, etc.
In this case, the upper space 250 may be either the trunk room 250T or the dwelling space 250R. However, it is not preferable for the secondary vertical pipe 340 to pass through the dwelling space 250R, and from this perspective, it is more preferable to use the upper space 250 as the trunk room 250T.

In the building structure of the apartment building 1 as described above, the horizontal piping 320 connects the main vertical piping 310 and the dwelling unit piping 330 on a certain specific floor FS, and the equipment piping 300 further includes a secondary vertical piping 340 that extends vertically from the horizontal piping 320 to a floor FD different from the specific floor FS and is connected to the dwelling unit piping (other floor dwelling unit piping) 350 on the different floor FD.
According to this configuration, the horizontal pipes 320 connecting the dwelling unit pipes 330 and the main vertical pipes 310 in the living space are not installed on all floors F, but only on specific floors FS. As a result, the piping space required for installing the horizontal pipes 320 can be reduced on floors other than the specific floors FS, making the living space larger. Furthermore, by installing the horizontal pipes 320 under the corridor floor slab 22 of the common corridor 20, it is possible to reduce the drainage noise generated inside the dwelling unit pipes 330 for drainage within the dwelling units 30 on each floor F, ensuring a quality living environment.

In addition, a meter box 200 is provided on the lower side adjacent to the entrance (alcove) 38 of each dwelling unit 30, and above the meter box 200 is either a trunk room 250T or a dwelling unit space 250R.
With this configuration, as in the above embodiment, the usable space in the dwelling unit 30 can be increased.

In addition, when an upper space 250, which is either a trunk room 250T or a dwelling space 250R, is provided above the meter box 200, a secondary vertical piping 340 is provided in the upper space 250, and the secondary vertical piping 340 is at least one of a water supply pipe and a gas pipe.
With this configuration, only a secondary vertical piping 340 extending to one of the dwelling units 30 on another adjacent floor F (different floor FD) is provided in the upper space 250, so even if piping is provided in the upper space 250, the amount of piping is reduced.
Furthermore, the auxiliary vertical piping 340 is at least one of a water supply pipe and a gas pipe, and has a smaller diameter than a miscellaneous drainage pipe. Therefore, even if the auxiliary vertical piping 340 is provided in the upper space 250, the space required for the piping can be reduced.
Furthermore, since the sub-vertical piping 340 can be installed so as to penetrate through the upper space 250 and the meter box 200, there is no need to provide a special partitioned space for installing the sub-vertical piping 340. Therefore, the usable space in the dwelling unit 30 can be efficiently expanded.

Furthermore, because the main vertical piping 310 is installed in the common facility space 10, horizontal piping 320 is required to connect it to the dwelling unit piping 330 installed in each dwelling unit 30. Here, a sub-vertical piping 340 is provided that extends vertically from the horizontal piping 320 to a floor FD different from the specific floor FS and is connected to other floor dwelling unit piping 350 on the different floor FD. Therefore, even if the horizontal piping 320 is installed only on the specific floor FS, other floor dwelling unit piping 350 of dwelling units 30 other than the specific floor FS can also be connected to the horizontal piping 320 via the sub-vertical piping 340. In this way, by providing the sub-vertical piping 340 that connects to the upper and lower floors near each dwelling unit 30, the amount of horizontal piping 320 installed is reduced, thereby reducing material costs and construction costs.
Furthermore, since the main vertical piping 310 is installed in the common facility space 10 and away from the dwelling units 30, the impact of noise generated by the main vertical piping 310 can be reduced.
Furthermore, with regard to the dwelling units 30 on floors FD where no horizontal pipes 320 are installed, they are connected to the nearest horizontal pipe 320 via a sub-vertical pipe 340 extending vertically, but because the horizontal pipes 320 are installed on each specific floor FS, there is no need to install the sub-vertical pipes 340 so that they span many floors F vertically, and therefore the impact of noise caused by the sub-vertical pipes 340 is limited. For the above reasons, it is possible to reduce the amount of horizontal pipes 320 installed while reducing the impact of equipment noise caused by the pipes on the dwelling units 30 on the floors above and below.

In particular, in this modified example, one of the two floors F is designated as a specific floor FS, and the floor FD below the specific floor FS is a floor F different from the specific floor FS, and the secondary vertical piping 340 extends vertically to the floor FD below the specific floor FS.
In this configuration, for example, if the piping is a water pipe that supplies clean water, only the water used by the residents of the dwelling unit 30 on the lower floor FD, where no horizontal piping 320 is provided, flows through the secondary vertical piping 340 to which the dwelling unit piping 350 on other floors of this dwelling unit 30 is connected.Therefore, even if noise is generated from the secondary vertical piping 340 when the resident of this dwelling unit 30 uses water, only the resident of this dwelling unit 30 who is actually using the water will be affected, and the use of water by other dwelling units 30 is unlikely to be a source of noise.
This makes it possible to reduce the impact of noise caused by water supplied through the pipes on the dwelling units 30 on the upper and lower floors.
It goes without saying that the first modified example has other effects similar to those of the embodiment already described.

(Second Modification of the Embodiment)
Next, a second modified example of the building structure of the apartment house shown as the above embodiment will be described using Fig. 5. Fig. 5 is a schematic vertical cross-sectional view showing the installation mode of the facility piping in the building structure of the apartment house in this second modified example. The building structure of the apartment house in this second modified example is a further modified example of the above first modified example, and the piping form of the facility piping 400 is different from the facility piping 100, 300 in the above embodiment and the first modified example.
As shown in FIG. 5 , the facility piping 400 includes common piping 405 , dwelling unit piping 430 , and other floor dwelling unit piping 450 .
The common piping 405 includes a main vertical piping 410 , a horizontal piping 420 , and a sub-vertical piping 440 .
The main vertical piping 410 is installed to penetrate the pipe shaft 11 of the common equipment space 10 across the upper and lower floors.
The horizontal piping 420 is provided only on the specific floor FS. In this modified example, one of the three floors F is designated as the specific floor FS, and the floors FD below and FU above the specific floor FS are floors F different from the specific floor FS. On the specific floor FS, the horizontal piping 420 is connected to the main vertical piping 410 and is arranged below the raised floor section 24 of the common corridor 20.
On the specific floor FS, dwelling unit piping 430 is connected to horizontal piping 420 that is laid horizontally up to the vicinity of dwelling unit 30. Dwelling unit piping 430 is arranged from above dwelling unit floor slab 35, through double floor 26 of low floor section 23, through wall section 25, and below high floor section 24.
A sub-vertical pipe 440 is connected to the horizontal pipe 420, and extends vertically from the horizontal pipe 420 to a floor F different from the specific floor FS, in this modified example, to the floor FU above the specific floor FS and the floor FD below. The sub-vertical pipe 440 is led out from the horizontal pipe 420 on the specific floor FS, penetrates the wall 25, and is led out above the dwelling unit floor slab 35, extends vertically, and then reaches the double floor 26 of the lower floor FD and the upper floor FU.
On the lower floor FD, the lower end of the auxiliary vertical pipe 440 is connected to the other floor dwelling unit piping 450 connected to the dwelling unit 30 on the lower floor FD. On the upper floor FU, the upper end of the auxiliary vertical pipe 440 is connected to the other floor dwelling unit piping 450 connected to the dwelling unit 30 on the upper floor FU.

The sub-vertical piping 440 is installed vertically penetrating the meter box 200 and the upper space 250, which are installed adjacent to the entrance of each dwelling unit 30. Here, the sub-vertical piping 440 installed in the upper space 250 is preferably at least one of a water supply pipe and a gas pipe. The sub-vertical piping 440 is preferably the facility piping 400 excluding the drainage pipe, and may be, for example, electrical wiring, communication wiring, etc.
In this case, as in the first modified example, the upper space portion 250 may be either a trunk room 250T or a dwelling space 250R, but it is more preferable to use it as the trunk room 250T.

It goes without saying that the second modified example has the same effects as the embodiment and the first modified example already described.
In this modification, the amount of horizontal piping installed is further reduced, which reduces material costs and construction costs, and further reduces the impact of piping during renewal, thereby further improving renewability.

(Third Modification of the Embodiment)
Next, a third modified example of the building structure of the apartment house shown as the above embodiment will be described using Fig. 6. Fig. 6 is a schematic vertical cross-sectional view showing the installation mode of the facility piping in the building structure of the apartment house in this third modified example. In the building structure of the apartment house in this third modified example, the piping form of the facility piping 500 is different from the facility piping 100, 300, 400 in the above embodiment and the first and second modified examples.

FIG. 6 is a schematic vertical cross-sectional view showing an installation mode of facility piping in an apartment building.
Such an apartment building 1B includes a common facility space 10, a common corridor 20, and a plurality of dwelling units 30.
The common equipment space 10 is set inside the core section 2. In this embodiment, a pipe shaft 11 is provided in the common equipment space 10.

The apartment building 1B includes facility piping 500. The facility piping 500 includes common piping 505 and dwelling unit piping 530.
The common piping 505 includes a main vertical piping 510. The main vertical piping 510 is housed in a pipe shaft 11 in the common equipment space 10. The main vertical piping 510 is provided so as to penetrate between the upper and lower floors.
Dwelling unit piping 530 is provided for each dwelling unit 30. The dwelling unit piping 530 is provided to run from the dwelling unit 30 through the double floor 26 of the low floor section 23, penetrate the wall section 25, and run below the corridor floor slab 22 of the common corridor 20. The dwelling unit piping 530 is led to the common equipment space 10, and is individually connected to the common equipment space 10 with the common piping 505 (main vertical piping 510).
The meter box 700 for each dwelling unit 30 is installed in the common facility space 10. The meter box 700 may be provided in the pipe shaft 11. The meter box 700 houses a meter (not shown) connected to each dwelling unit piping 530. Multiple meters (not shown) may be provided in the meter box 700 depending on the type of dwelling unit piping 530.

The building structure of the apartment building 1B as described above is a building structure of the apartment building 1B having a common corridor 20 and dwelling units 30 facing the common corridor 20 on each floor F, and the equipment piping 500 of the apartment building 1B includes common piping 505 including a main vertical piping 510 that penetrates through to the common equipment space 10 on each floor from upper to lower floors, and dwelling unit piping 530 that runs from the dwelling unit 30, passing under the floor slab (corridor floor slab) 22 of the common corridor 20, and is connected to the common piping 505 in the common equipment space 10, and the meter box 700 of each dwelling unit 30 is installed in the common equipment space 10.
With this configuration, the meter boxes 700 for all of the dwelling units 30 on floor F can be efficiently installed together in the common facility space 10, which reduces the proportion of the area occupied by the meter boxes 700 to the total area of floor F compared to when an area for a meter box 700 is individually reserved for each dwelling unit 30. This allows for more space to be used in the dwelling units 30.

(Other Modifications)
The apartment building of the present invention is not limited to the above-described embodiments and modifications explained with reference to the drawings, and various other modifications are possible within the technical scope.
For example, in the above embodiment and each modified example, the common equipment space 10 is provided in the core section 2, but it may also be provided, for example, outside the core section 2, adjacent to the core section 2.
In addition to this, it is possible to select and discard the configurations given in the above embodiment and each modified example, or to change them to other configurations as appropriate, without departing from the spirit of the present invention.
For example, in the above embodiment, the facility piping includes water pipes, gas pipes, electrical wiring, communication lines, and drainage pipes, but each of these may have a different piping configuration. For example, the drainage pipes may have the configuration of the above embodiment described with reference to Fig. 2, the water pipes and gas pipes may have the configuration of the first modified example described with reference to Fig. 4, and the electrical wiring and communication lines may have the configuration of the second modified example described with reference to Fig. 5.

1, 1B Apartment building 105, 305, 405, 505 Common piping 10 Common equipment space 110, 310, 410, 510 Main vertical piping 20 Common corridor 120, 320, 420 Horizontal piping 22 Corridor floor slab (floor slab) 130, 330, 430, 530 Dwelling unit piping 30 Dwelling unit 340, 440 Sub-vertical piping 34 Entrance door 350 Dwelling unit piping on other floors (dwelling unit piping on different floors)
38 Alcove (entrance) F Floors 200 and 700 Meter box FS Special floor 250R Dwelling space FD Floor below the special floor (a different floor from the special floor)
250T Trunk Room FU Above specific floor (different floor from specific floor)
100, 300, 400, 500 Equipment piping

Claims (2)

A building structure of an apartment building with a common corridor and a dwelling unit facing the common corridor on each floor,
The facility piping of the apartment building is
A main vertical pipe is provided in the common facility space on each floor, penetrating the upper and lower floors;
A horizontal pipe connected to the main vertical pipe and provided below the floor slab of the common corridor;
A dwelling unit piping that connects the horizontal piping and the dwelling unit;
Equipped with
A meter box is provided adjacent to the entrance of each dwelling unit, and the upper side of the meter box is the dwelling unit space, which is connected to the interior of the dwelling unit and is accessible from the interior of the dwelling unit .
An alcove is formed on the common corridor side of the entrance of the dwelling unit so as to recess toward the inside of the dwelling unit,
The area between the alcoves of the adjacent dwelling units is a protrusion that protrudes toward the common corridor,
A building structure of an apartment building , characterized in that the meter box and the dwelling space are located at the position adjacent to the entrance on the dwelling unit side of the protrusion . The floor slab of the common corridor comprises a low floor section constructed on the side of the dwelling unit, and a high floor section provided on the opposite side of the dwelling unit across the low floor section and connected to the low floor section by a wall section extending above the low floor section;
A floor material is provided above the low floor portion to form a double floor,
The dwelling unit has a dwelling unit floor slab connected to the low floor portion,
The horizontal piping is provided under the raised floor portion and along the common corridor,
The building structure of an apartment building as described in claim 1, characterized in that the dwelling unit piping is arranged from above the dwelling unit floor slab, through the inside of the double floor of the low floor section, through the wall section, and below the high floor section.