JPH1082097A - Building having wall ventilating construction and building unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make spaces in wall panels have vent efficiency without lowering bearing force of joists in side edges of a floor panel in a building unit of wall construction. SOLUTION: A building unit A is so constituted that exterior wall surface members 20 and interior wall surface members 21 are mounted to both sides of inside and outside of a wall framework built up with heads 18, sills 19 and lambs 17a and 17a to erect wall panels 16, 16,... used for bearing walls on three side edges of a floor panel 10 as a floor plane of structure by mounting a floor surface member 14 on the surface of a floor framework assembled with various kinds of hoists 11, 12, 13... In that case, venting notches K2, K3,... are provided to a partition site between the jambs 17a and 17a adjacent to each other in the heads 18 and sills 19 of the wall panels 16. Spacers 15, 15,...are mounted to the side joist 12 faced to the outdoor side and the side of an outward side of the end joist 13 except for right under sites of the venting notches K3, and the exterior wall surface members 20 are mounted through the spacers 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building and a building unit having an in-wall ventilation structure, and more particularly to a building and a building unit having an in-wall ventilation structure formed by applying a wooden frame wall method.

[0002]

2. Description of the Related Art In recent years, unit buildings have been widely used as one method of increasing the industrial production rate of buildings. This unit building is a building in which a building is divided into several units in advance and produced in a factory, and then these units are transported to a construction site, and constructed and assembled on a pre-prepared foundation. . As a method of assembling each unit, for example, as described in Japanese Patent Publication No. 58-30978, a wall-type method of assembling a floor panel and a wall panel into a three-dimensional structure close to a box shape is known. According to this wall-type construction method, the external force is uniformly supported on the entire floor and the entire wall as compared with the case of the frame construction method including columns and beams, and it is possible to obtain high structural strength. .

In the wall method, as shown in FIG.
First, the base 101 is fixed to the foundation. Joist 1 on this
02, 102,... Are assembled to form a floor frame.
A floor panel 103 for structure is adhered to the upper surface to form a floor panel 104. Next, an upper frame 105, a lower frame 106, and vertical frames 107, 107,... Are assembled on the floor panel 104 to form a wall frame assembly, and structural wall materials 108, The wall panel 109 constituted by attaching the 108 is erected. Further, the joists are laid over the upper frame 105 of the wall panel 109, and the unit building is assembled in the order of forming the second floor panel in the same manner as described above. According to the wall type construction method, the upper frame 105, the lower frame 106, the left and right vertical frames 107, 107 and the inner and outer wall materials 1 are provided inside the wall panel 109.
08 and 108, a predetermined space is created. Here, by ventilating the interior space of the wall panel formed as described above, for example, the air in the interior space of the wall panel including the moisture heated by the warm air of the room in the winter, causes the outer wall material 108 to pass through. This prevents the wall material from being damaged due to condensation due to the outside air, and prevents the wall material from being eroded due to the generation of mold on the wall in a hot and humid environment during the rainy season. Then, in order to ventilate the inner space of the wall panel, cutouts are made in the upper frame 105, the lower frame 106, the joists 102, and the like, thereby, for example, securing a flow path of air from under the floor to the back of the shed, By providing vents on the foundation and the back of the hut and communicating with the outside, it takes in outside air and ventilates the space inside the wall panels.

[0004]

However, according to the above-described method of notching a joist or the like, the strength of the joist is reduced, so that a special reinforcing material is required or structural calculations are required. There was a problem that it became complicated.

[0005] The present invention has been made in view of the above circumstances, and has as its object to provide a building and a building unit in which the interior space of the wall panel has a ventilation structure without lowering the supporting capacity of the joists.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 is directed to at least one side edge of a floor panel formed by attaching a floor panel to an upper surface of a floor framework. In a building in which a wall panel configured by attaching wall materials to both the inner and outer surfaces of the wall frame is provided, and the outer wall material of the wall panel extends to the side of the floor panel, In order to make the internal space of the wall panel partitioned by the outer wall material and the outer wall material a ventilable space, a ventilation notch is provided on the side of the wall frame assembly at a contact portion between the outer wall material and the wall frame assembly. In addition, a ventilation spacer is interposed between the outer wall material and the floor frame.

According to a second aspect of the present invention, there is provided a building having an in-wall ventilation structure according to the first aspect, wherein the floor panel is
A floor panel is attached to an upper surface of a floor frame in which the joists are assembled in a square shape, the wall panel is erected on the outermost joists of the floor panel, and an outer wall surface of the wall panel The material extends to the side of the outermost joist of the floor panel, and the ventilation spacer is interposed between the outer wall material and the outermost joist.

According to a third aspect of the present invention, there is provided a building having the in-wall ventilation structure according to the first or second aspect, wherein a plurality of the outer wall materials and the floor frame or the outermost joists are provided. And a predetermined gap is provided between adjacent spacers.

According to a fourth aspect of the present invention, there is provided a building having an in-wall ventilation structure according to the first or second aspect, wherein the ventilation spacer has a side contacting with the outer wall material or the floor frame. Alternatively, a cutout for ventilation is provided on the side that contacts the outermost joist.

According to a fifth aspect of the present invention, there is provided a building having an in-wall ventilation structure according to the first or second aspect, wherein the wall frame is formed by assembling an upper frame, a lower frame, and a vertical frame into a square. , The upper frame and / or the lower frame is provided with the ventilation notch.

The invention according to claim 6 relates to a building having an in-wall ventilation structure according to claim 1 or 2, wherein the wall panel is a wall in which an upper frame, a lower frame, and a vertical frame are assembled in a rectangular shape. A wall material is attached to both the inner and outer surfaces of the framework, and the inner space of the wall panel is divided into a plurality of spaces between the vertical frames by the vertical frames, so that each of the spaces between the vertical frames can be a space that can be ventilated. The ventilation notch is provided at a portion of the upper frame and / or the lower frame that partitions the space between the vertical frames.

According to a seventh aspect of the present invention, there is provided a building having an in-wall ventilation structure according to the first or second aspect, wherein the wall panel has an upper frame, a lower frame, and a vertical frame formed in a rectangular shape. A wall material is attached to both the inner and outer surfaces of the framework, and the inner space of the wall panel is divided into a plurality of spaces between the vertical frames by vertical frames. A notch for connection or a through hole for connection is also provided in a vertical frame partitioning the space between the vertical frames.

The invention according to claim 8 relates to a building unit constituting a building according to at least one of claims 1 to 7, wherein the floor panel and the wall panel are previously joined at a factory. It is characterized by being done.

[0014]

According to the structure of the present invention, the internal space of the wall panel is formed by inserting a ventilation notch provided in the wall frame and a ventilation spacer between the floor frame and the outer wall material. Through the gap and the outside of the wall panel, for example, without cutting out the outer surface of the outermost joists (side joists, end joists) that constitute the side edges of the floor frame, the inner space of the wall panel Ventilation can be performed. Therefore, since the supporting force of the outermost joist as a structural member is not sacrificed, a special reinforcing material is not required, and the structure calculation can be prevented from being complicated. Also, for example, since the position of the outermost joist approaches below the center of gravity of the wall panel,
The structural stability is improved.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. The description will be specifically made using an embodiment. FIG. 1 is a partially cutaway perspective view showing a configuration of a building unit constituting a building according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a unit building obtained by assembling a plurality of the same building unit and a roof unit. , FIG. 3 is a vertical sectional view of the building unit, FIG. 4 is a horizontal sectional view along line CC of FIG. 1, FIG. 5 is a horizontal sectional view along line DD of FIG. 6 is a vertical sectional view taken along line EE in FIG. The unit building in this example is, as shown in FIG.
For example, it is a unit building related to a two-story detached building with a ridge roof, and building units A, A,..., Which constitute each living room part such as a living room, a dining room, a bedroom, etc. of the building, and a roof part of the building. And a roof unit B. These units are produced in advance in a factory, transported to a construction site, and constructed and assembled in order to increase the industrial production rate of the building. First, the building unit A for the lower floor,
A,... Are mounted on a foundation G (see FIG. 6) and interconnected to form the lower floor of the building, and then the building units A, A,. This is done by interconnecting to form an upper floor section and then mounting and interconnecting a roof unit B on top of the upper floor section.

Next, the building unit A of this example will be described. As shown in FIG. 1, the building unit A has wall panels 16, 16,... Standing upright along side edges of the floor panel 10. In the figure, a floor panel 10 is formed into a square frame by nailing end joists 13, 13 at right angles to the floor joists 11, 11,... And floor joists 11,11,
.. And the side joists 12, 12, a receiving member is also attached to each other to form a floor frame assembly, and a floor surface material 14, such as a structural plywood or a particle board, is attached to the upper surface of the floor frame assembly. Here, as shown in FIG. 1 and FIG. 4, the outer joist 12 and the end joist 13 facing the outside are made of plywood, leaving a portion located immediately below a ventilation notch of a lower frame to be described later. Are attached,
An outer wall material is attached via the spacers 15, 15,.... That is, the gap S is formed immediately below the ventilation notch of the lower frame. Further, the side joists 12 and the end joists 13 facing the outside are provided with ventilation notches K1, K1,... It is to be noted that, among the ventilation cutouts K1, K1,..., The cutouts are shared in a portion where a cutout for fastening work is provided when the lower floor building unit A is fixed on the foundation G using anchor bolts. I do.

The wall panels 16, 16,... Are erected along the side edges of the floor panel 10. In this example, the U-shaped wall-shaped building unit is formed by the wall panels 16 being erected on the three side edges of the floor panel 10, and the building unit constitutes which part of the building. Accordingly, for example, an L-shaped wall-shaped building unit and a two-shaped wall-shaped building unit are also formed. As shown in FIGS. 1 and 5, each wall panel 16 has columns 17b, 17b at both outer ends of the vertical frames 17a, 17a,... And the wall panel 16 erected on the short side of the floor panel 10. The upper frame 18 and the lower frame 1 are in a state of being abutted against these openings at the upper end and the lower end, respectively.
9 are nailed to form a wall frame, and an outer wall material 20 and an inner wall material 21 such as a wood chip cement board and a gypsum board are attached to both sides of the outer surface and the inner surface. It is used as the in-wall ventilation space F, and is configured by loading a heat insulating material 22 (see FIG. 6) in other areas as necessary. Here, upper frame 1
8 and the lower frame 19 respectively have adjacent vertical frames 17a, 17
a, K3, K2,..., K3, K
3,... Are provided. In this example, the vertical frames 17a, 17a,... However, pillar 17
For the b and 17b, a JAS standard material of a size model 404 is used.

The wall panel 16 is erected on the floor panel 10 by being nailed in a lower frame 19. As shown in FIG. 3, the embedding bolt 23 has a metal disk at the center and male screw portions 24 and 25 provided on the upper and lower sides. The lower male screw portion is inserted into a bolt insertion hole provided on the upper frame 18. 24, the metal disk is abutted and locked on the upper surface of the upper frame 18, and a lower end nut 26 is screwed from the lower surface side of the upper frame 18. At this time, the upper male screw portion 25 of the stud 23 protrudes from the upper surface of the upper frame 18. A plurality of the studs 23 are attached at predetermined intervals along the length direction of the upper frame 18.

The head tie (the base when the building unit is used on the lower floor) 27 is provided on the back side of the floor panel 10 at the position corresponding to the wall panel of the building unit on the lower floor. It is attached to the lower surface of the side joist 12 and along the length direction of these end joists 13 and side joists 12. Here, as shown in FIG. 6, in the head joint 27, ventilation cutouts K <b> 4, K <b> 4,... Are provided at positions directly above the ventilation cutouts K <b> 2, K <b> 2,. Further, the head joint 27 is provided with a plurality of bolt insertion holes 28 at predetermined intervals along the length direction.

The bolt insertion holes 28 project upward from the upper frame 18 of the lower-floor building unit when tightening the lower-floor building unit and the upper-floor building unit placed thereon. Since it is used as an insertion hole for the upper male screw portion 22 of the stud bolt 23, it is preferable that the bolt insertion hole 28 and the stud bolt 23 be positioned and provided so as to correspond to each other through each building unit. .

As shown in FIG. 2, the roof unit B in this example has a ridge roof divided into two in the girder direction and four in the wife direction, and the ridge side ridge roof units B ₁ , B ₁ ,. And an eaves side wing roof unit B ₂ , B ₂ ,... Each ridge side hipped roof unit B ₁ represents consists of two sheets of the roof plate support frame. The roof shingle forms a roof surface that flows to the wife side and the girder side, respectively.On the back surface, a plurality of rafters are arranged in a state where the extending direction is the flow direction and the parallel direction is the wife direction or the girder direction. Has been established. Also, on the back of the wife's roof,
The rafter receiving girder and the head tie (wife side eaves beam) 29 (see FIG. 6) are fixed orthogonally to the flow direction, and on the back surface of the sloped edge which becomes the joining edge with the roof plate on the girder side, Corner beams are fixed. This corner beam is also fixed to the back surface of the inclined edge of the roof plate on the eaves side. Here, as for each roof plate, a waterproof sheet such as asphalt roofing is laid on an upper surface of a base plate (roof base material) such as a structural plywood or a particle board, and a vinyl chloride steel plate (polyvinyl chloride) is further provided on an upper surface of the waterproof sheet. It is constituted by sticking a non-combustible coating material such as a metal laminate. In addition, the support frame is composed of a head joint (wife side eaves beam) 29, a corner beam, a truss beam, a connecting beam, and a span beam. A reinforcing beam is erected between the truss beam, the connecting beam, and the intermediate beam on the support frame. The head joint (wife side eaves beam) 29 and the corner beam are integrally connected to the joint beam and the span beam integrally with the roof plate.

Further, the roof unit B _{2 at} each eaves side is also
Similar to the ridge-side hipped roof unit B _1, consisting of two roof plate and the support frame. The roof shingle forms a roof surface that flows to the wife side and the girder side, respectively.On the back surface, a plurality of rafters are arranged in a state where the extending direction is the flow direction and the parallel direction is the wife direction or the girder direction. Has been established. In addition, on the back side of the roof plate on the wife side, a head tie (wife side eaves beam) is fixed perpendicular to the flow direction, and on the back surface of the sloped edge that becomes the joining edge with the roof plate on the girder side, Corner beams are fixed. A head tie (girder side eaves beam) is fixed to the back surface of the roof plate on the eave side in a direction perpendicular to the flow direction, and a corner beam is fixed to the back surface of the beveled edge.
In addition, the support frame is composed of a head tie (wife side eaves beam, girder side eaves beam), corner beams, truss beams, and connecting beams. Here, the head tie (wife side eaves beam) 29 of the above-mentioned ridge side roof unit B ₁ ,
And the head of the joint edge of the eaves side hipped roof unit B ₂ (gable eaves beams, digit side eaves beams) ventilation notch K2, K2 of the upper frame 18, ...
Are located just above the notches K5, K5,.
Is provided.

In the ceiling installation work on the lower floor, as shown in FIG. 6, first, both ends of the ridge support 30 are joined to the head panel provided opposite to the back side edge of the floor panel 10 on the upper floor. 2
It is nailed over the upper surface of 7, 27 and fixed. Next, on the lower surface of the erected bridge 30 (the floor joists 11, 11,...).
Plywood material 3 at predetermined intervals.
, And short edges 33, 3 through 1
Attach 3, ... Finally, the ceiling surface material 34 made of a gypsum board or the like is connected to the edges 32, 32,.
Attach to 3, ... to complete the ceiling installation work on the lower floor. Note that the ceiling installation work on the upper floor is also performed according to the same procedure as described above, and the description thereof will be omitted.

In the figure, the building units A, A of this example are vertically joined, and the roof unit B of this example (ridge side roof unit B ₁ ) is placed and joined thereon, and the ceiling is also attached. 1 shows an example of an attached unit building. As shown in the figure, the lower-floor building unit A is placed on a foundation G provided with underfloor ventilation holes Hg, Hg,... It is inserted into the bolt insertion hole 28 of the base 27 and is fixed by being tightened by a washer and a nut. When the lower and upper building units A, A are joined to each other, first, the upper male screw portion 25 of the stud 23 protruding from the upper frame 18 of the lower floor building unit A is bolted to the upper floor building unit A. The upper-floor building unit A is positioned so as to be inserted into the insertion hole 26 and placed on the lower-floor building unit A. The placed upper-floor building unit A is joined to the lower-floor building unit A by screwing a washer and a nut to the upper male screw part 25 of the stud 23. The upper-floor building unit A thus mounted and joined is brought into contact with the upper surface of the wall panel 16 of the lower-floor building unit A by a head joint 27 to be tied.

The ridge side roofing unit B ₁ is positioned and placed on the upper part of the building unit A on the upper floor, and a washer and a nut are screwed to the upper male screw portion 25 of the stud 23. To the building unit A. The ridge side roof unit B ₁ mounted and joined in this manner is brought into contact with the upper surface of the wall panel 16 of the building unit A by the head joint 29 and is tied. Each of the building units A, A on the upper floor and the lower floor has another building unit A, A,... In the horizontal direction, and the roof unit B has another building side roof unit B _1. and to eave side hipped roof unit B ₂ are joined the unit building is completed.

In the unit building thus assembled, as shown by a dotted line I in the figure, for example, outdoors → underfloor ventilation holes Hg, Hg,... → underfloor space → venting notch K1,
K1,... → gap S, S between spacers 15, 15 → notch for ventilation K3, K3,... → wall panel internal space F, F,.
→ Notches for ventilation K2, K2,... → Notches for ventilation 4 → Gaps S, S, between spacers 15, 15 → Notches for ventilation K3, K
3, ... → Wall panel interior space F, F, ... → Vent notch K
2, K2, ... → Notch K5, K for ventilation of roof unit B
5,... → A flow path of air having an outdoor flow or a flow opposite thereto is formed, and the internal space F, F,.

According to the above configuration, the wall panel internal space F,
F,... Are the space above through the ventilation notch K2 of the upper frame 18 and the gap S, between the ventilation notch K3 of the lower frame 19 and the outer surface of the lateral joist 12 and the end joist 13 and the outer wall material 20. S,
... and communicate with the lower space, and the gaps S,
S are a plurality of spacers 15, 15,.
And the outer wall material 20 is attached to these spacers 15, 15,..., So that, for example, the outer surface of the side joist 12 and the end joist 13 is attached. It is not necessary to cut out the wall panel internal space F without lowering the supporting force of the joist as a structural member. In addition, since the position of the joist approaches immediately below the center of gravity of the wall panel 16, the building unit and the unit building of the present invention have improved stability.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like that do not depart from the gist of the present invention. Is also included in the present invention. For example, in the above-described embodiment, the opening is not provided in the wall panel 16 of the building unit A, but as shown in FIG. 7, the opening M1 and M2 for windows are provided in the wall panels 16a and 16a. ,
For example, ventilation cutouts K6, K6,... Above the window lintel (upper frame of the opening M1) 40 on the side where the outer wall material of the vertical frames 17a, 17c, 17c,.
In addition, the end joists 13 may be provided with spacers 15 and 15a except for a portion where the cutout K1 for ventilation is left, to allow ventilation in the inner space of the wall panel. In the above-described embodiment, the ventilation notches K2, K2,..., K3 are provided at a single ratio between the vertical frames 17a, 17a (posts 17b) adjacent to the upper frame 18 and the lower frame 19 of the wall panel 16. , K3
..., but at least one ventilation notch is provided in each of the upper frame and the lower frame for one wall panel, and
At least one vent notch or through hole may be provided in each vertical frame. Further, in the above-described embodiment, the spacers 15 are attached to the outer surfaces of the side joists 12 and the end joists 13 immediately below each vertical frame 17b at a ratio of one, but for example, from a single long flat plate. A spacer having a notch or a through-hole in the vertical direction is provided at a portion of the lower frame 19 which is to be located immediately below each ventilation notch K3.
2 and the end joists 13 may be attached to the outer surface. In the embodiment described above, the roof unit B
Is a ridge roof unit with a large ridge roof, but it may be a ridge roof unit with a rectangular ridge roof where the exit ridges are concentrated at one point. Furthermore, a gable roof may be used.

[0029]

As described above, according to the structure of the present invention, the inner space of the wall panel is formed by the ventilation notch provided in the wall frame and the ventilation spacer provided between the floor frame and the outer wall material. Through the gap formed by interposing
Because it communicates with the outside of the wall panel, for example, ventilating the inner space of the wall panel without notching the outer surface of the outermost joists (side joists, end joists) constituting the side edges of the floor framework. Can be. Therefore, since the supporting force of the outermost joist as a structural member is not sacrificed, a special reinforcing material is not required, and the structure calculation can be prevented from being complicated. Further, for example, the position of the outermost joist approaches below the center of gravity of the wall panel, so that structural stability is improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a configuration of a building unit constituting a building according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a unit building obtained by assembling a plurality of the same building units and a roof unit.

FIG. 3 is a vertical sectional view of the building unit.

FIG. 4 is a horizontal sectional view taken along line CC of FIG. 1;

FIG. 5 is a horizontal sectional view taken along line DD of FIG. 1;

FIG. 6 is a vertical sectional view taken along line EE of FIG. 2;

FIG. 7 is a partially cutaway perspective view showing a configuration of a building unit which is a modification of the embodiment of the present invention.

FIG. 8 is a perspective view for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Floor panel 11 Floor joist (joist) 12 Side joist (joist) 13 End joist (joist) 14 Floor surface material 15 Spacer (spacer for ventilation) 16, 16a Wall panel 17a, 17c Vertical frame 17b Column (vertical frame) 18 Top Frame 19 Lower frame 20 Outer wall material (wall material) 21 Inner wall material (wall material) C Internal space of wall panel K2, K3 Notch for ventilation

Claims (8)

[Claims] At least one side edge of a floor panel formed by attaching a floor panel to an upper surface of a floor framework is provided with a wall panel configured by attaching wall panels to both inside and outside surfaces of the wall framework. A building in which a wall material outside the wall panel extends to the side of the floor panel, wherein a wall panel inner space partitioned by the wall framework and the inner and outer wall materials can be ventilated. In order to form a space, a ventilation notch is provided on the wall frame side of a contact portion between the outer wall material and the wall frame, and a ventilation spacer is provided between the outer wall material and the floor frame. Building with ventilation structure in the wall characterized by being interposed. 2. The floor panel is configured by attaching a floor panel to an upper surface of a floor frame in which joists are assembled in a square shape, and the wall panel is erected on an outermost joist of the floor panel. ,
And, the outer wall material of the wall panel extends to the side of the outermost joist of the floor panel, and the ventilation spacer is provided between the outer wall material and the outermost joist. 2. The building according to claim 1, wherein the building has an in-wall ventilation structure interposed therebetween. 3. A plurality of ventilation spacers are interposed between the outer wall material and the floor frame or the outermost joist, and a predetermined gap is provided between adjacent spacers. A building having an in-wall ventilation structure according to claim 1 or 2. 4. The ventilation spacer is provided with a ventilation notch on the side that contacts the outer wall material or the side that contacts the floor frame or the outermost joist. A building having the in-wall ventilation structure according to 1 or 2. 5. The wall frame set is configured by assembling an upper frame, a lower frame, and a vertical frame into a square, and the upper frame and / or the lower frame are provided with the ventilation notches. A building having an in-wall ventilation structure according to claim 1. 6. The wall panel is constructed by attaching wall materials to both inside and outside surfaces of a wall frame in which an upper frame, a lower frame, and a vertical frame are assembled in a rectangular shape, and the inner space of the wall panel is formed by a plurality of vertical frames. In order to make each space between the vertical frames air-permeable, the upper frame and / or the lower frame and the portion for partitioning each space between the vertical frames are used for the ventilation. The building having an in-wall ventilation structure according to claim 1 or 2, wherein a notch is provided. 7. The wall panel is configured by attaching wall materials to both inner and outer surfaces of a wall frame in which an upper frame, a lower frame, and a vertical frame are assembled in a rectangular shape, and the inner space of the wall panel is formed by a plurality of vertical frames. In order to connect a plurality of spaces between vertical frames, a notch for connection or a through hole for connection is provided also in a vertical frame separating the spaces between the plurality of vertical frames. A building having an in-wall ventilation structure according to claim 1 or 2, wherein: 8. A building unit constituting the building according to at least one of claims 1 to 7, wherein:
A building unit, wherein the floor panel and the wall panel are joined in advance at a factory.