JPH08177124A - Party wall structure of building unit - Google Patents

Abstract

PURPOSE: To install a party wall without using a ceiling small beam, and form an overceiling part with small number of materials even when an overceiling border wall is installed, to simplify the structure, and facilitate the manufacture and the installing work. CONSTITUTION: A building unit 1 is manufactured by assembling a ceiling panel 2, a floor panel 3, and two end panels 4 and 4. While plural ceiling small beams 22 are erected between two parallel longer side ceiling large beams 20 parallel to the ceiling panel 2, an in-ceiling party wall 24 is erected. The in-ceiling party wall 24 is composed of the first and the second border wall members 24A and 24B, and both border wall members 24A and 24B are formed as a face member which consists of a double-folded plaster board plate, as the ground member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building wall structure of a building unit and can be used when building an apartment house in a unit type building.

[0002]

BACKGROUND ART A unit-type building is built by combining a plurality of building units produced in advance in a factory at a construction site. In addition, the building unit is a skeleton including four pillars erected at four corners, and four ceiling girders and floor girders that connect upper ends and lower ends of these pillars. The ceiling surface material, the floor surface material, the inner wall, the outer wall, and the like are attached to this frame. When such a unit-type building is used as an apartment house, a boundary wall is arranged at the boundary between adjacent dwelling units. And, as a building unit in which this boundary wall is arranged, Japanese Patent Publication No. 6-72457 and Japanese Patent Publication No. 6-72
No. 458 is known.

The above is a structure in which the ceiling space of a building unit that constitutes a unit-type building is partitioned by a ceiling back wall, and in the ceiling space of this building unit, there is a space between the ceiling girders facing each other of the frame of the building unit. A ceiling girder is erected on the ceiling girder, and the ceiling back wall is fixed to the ceiling girder between the pillars of the above ceiling space and across the ceiling girder.

The above is the one in which the underfloor space of the building unit constituting the unit type building is partitioned by the underfloor boundary wall,
In the underfloor space of this building unit, floor girders are erected between the floor girders facing the frame, and the underfloor boundary wall is between the pillars of such an underfloor space and intersects with the floor girders. It is fixed to the lever floor beam.

[0005]

By the way, the boundary walls such as the ceiling back wall and the underfloor boundary wall are composed of two sheets of a base material and a fire-resistant surface material attached to one side surface of the base material. It is configured by arranging a pair of boundary wall panels facing each other with the surface material facing outside. However, in the above-mentioned building unit, the ceiling back wall must be provided separately from the ceiling beam and intersecting with the ceiling beam. Since materials are required and end covers for adjusting the length are also required at both ends in the longitudinal direction of the ceiling back wall, many members are required to form the ceiling back when attaching the ceiling back wall. There was a problem.

Further, since the ceiling back wall is provided so as to intersect the ceiling beam and is fixed to the ceiling beam, the ceiling back wall cannot be attached without the ceiling beam. There was also. Furthermore, since the fitting groove that fits the ceiling beam is required to be processed on the ceiling back wall, and this groove processing is required only for the ceiling beam, manufacturing of the ceiling back wall is troublesome. In addition, the structure is complicated, and the fitting groove must be fitted to the ceiling beam, so that the mounting is troublesome.

The above-mentioned building unit also has the same problem as described above. That is, the underfloor boundary wall must be provided separately from the floor girder and intersecting the floor girder,
In addition to the floor girders, a base material for the underfloor wall is required, and end covers for adjusting the length are also required at both longitudinal ends of the underfloor wall. However, there is a problem that many members are required for forming.

Further, since the underfloor boundary wall is provided so as to intersect with the floor girders and is fixed to the floor girders, there is a problem that the underfloor boundary wall cannot be attached without the floor girders. . Furthermore, since the fitting groove that fits the floor girder must be processed in the underfloor boundary wall, and this groove processing is required only for the ceiling girder, it is troublesome to manufacture the underfloor ceiling lining wall. In addition, the structure is complicated, and the fitting groove must be fitted to the ceiling beam, so that the mounting is troublesome.

It is an object of the present invention to make it possible to form the back ceiling part with a small amount of material even when the back ceiling wall is attached, and to attach the front wall without the ceiling beam, and it is simple. The purpose is to provide a building wall structure that is structural and easy to manufacture and install.

Another object of the present invention is that the lower floor can be formed of a small amount of material even when the underfloor boundary wall is attached, and the boundary wall can be attached even without the floor beam, and is simple. It is to provide a building wall structure that has a simple structure and is easy to manufacture and install.

[0011]

A building wall structure of a building unit according to the present invention comprises four pillars erected at four corners, and a ceiling girder connecting upper ends and lower ends of these pillars, In a boundary wall structure of a building unit that includes a frame composed of a floor girder and a ceiling back wall in the ceiling space between columns, the ceiling back wall is an outer fire-resistant surface material and an inner wall. The base material is formed to include the base material, and the base material is installed between the ceiling girders.

In the boundary wall structure of this building unit, the base material may be attached in parallel with the ceiling beam across the ceiling girders, and the room boundary wall is provided below the ceiling back wall. The ceiling back wall and the living room border wall may be divided by a ceiling surface material.

Further, the building wall structure of the building unit according to the present invention comprises four pillars which are erected at four corners, and a ceiling girder and a floor girder which connect upper ends and lower ends of these pillars. In the boundary wall structure of a building unit, which has a framework configured to include an underfloor wall in the underfloor space between columns, the underfloor wall is formed by including an outer fire resistant surface material and an inner base material. In addition, this base material is characterized in that it is mounted on a refractory floor surface material which is mounted across the floor girders.

In the boundary wall structure of this building unit, the base material may be attached in parallel with the floor beam which is erected between the floor girders, and the living room boundary wall is provided above the underfloor wall. The underfloor boundary wall and the room boundary wall may be separated by a floor material.

[0015]

In the present invention as described above, since the base material of the ceiling back wall is installed between the ceiling girders of the building unit, it is not necessary to provide the ceiling beam in the portion where the base material is attached. Since no ceiling beam for the ceiling is required, the ceiling back part can be formed with a small amount of material even when the ceiling back wall is attached.

In the boundary wall structure of this building unit, if the base material is parallel to the ceiling beam that is installed between the ceiling girders, the boundary wall can be attached without the ceiling beam. Further, since the base material does not need to be grooved, the structure is simple and the mounting is easy.

Further, in the boundary wall structure of the building unit according to the present invention, since the base material of the underfloor boundary wall is laid between the floor girders, it is not necessary to provide the floor girder in the portion where the base material is attached. Therefore, since the floor beam is not required, the lower part of the floor can be formed with a small amount of material even when attaching the underfloor boundary wall.

In the boundary wall structure of this building unit, if the base material is parallel to the floor girders installed between the floor girders, the boundary wall can be attached without the floor girders. Further, since the base material does not need to be grooved, the structure is simple and the mounting is easy.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a first embodiment of a building wall structure of a building unit according to the present invention. As shown in Figure 1,
A building unit 1 that constitutes a unit-type building includes a ceiling panel 2, a floor panel 3 arranged to face the ceiling panel 2, and two end panels 4 and 4 arranged at both ends of these panels 2 and 3. And each of these panels 2-4
It can be assembled in the total assembly process.
Then, although not shown, an inner wall, an outer wall and the like are attached to the frame 5 of the building unit assembled in this way, whereby the building unit 1 is formed. In addition, this building unit 1 shall show the upper-floor building unit in FIG.

As shown in FIG. 2, the ceiling panel 2 which is the ceiling back portion is provided with two parallel long-side ceiling girders 20 made of, for example, grooved steel, and these ceiling girders 20 have a plurality of plate shapes. Brackets 21 are attached at substantially equal intervals. A plurality of ceiling girders 22 made of wood or the like are installed between the ceiling girders 20 via brackets 21. As shown in FIG. 7, for example, a plaster board plate is provided on the lower surfaces of the ceiling girder 20 and the ceiling girder 22.
A plurality of ceiling surface materials 23 are attached, and a space from the ceiling surface material 23 to the upper surface of the ceiling girder 20 is a space behind the ceiling A.
Has become.

A ceiling back wall 24 is provided at a substantially intermediate position in the longitudinal direction between the ceiling girders 20, 20. The ceiling back wall 24 partitions the ceiling back space A. As shown in FIG. 7, the ceiling back wall 20 is composed of elongated first and second boundary wall members 24A and 24B, and each of the boundary wall members 24A and 24B is formed of, for example, wood into a plate shape. The base material 25 and a face material 26 made of, for example, two fireproof gypsum board plates attached to the outer surface of the base material 25 are formed. Then, the boundary wall members 24A and 24B are arranged so as to face each other so that the face member 26 is on the outside.

Then, these boundary wall members 24A, 24B
Also, it is adapted to be attached to the bracket 21 attached to the ceiling girder 20 by nailing or the like. At this time, the upper end surfaces of the field wall members 24A and 24B are flush with the upper surface of the ceiling girder 20 as shown in FIG. The height of the ceiling beam 22 is smaller than the height of the base material 25 of the boundary wall members 24A and 24B. A heat insulating material 49 such as glass wool or rock wool is provided inside the ceiling back wall 24. Then, such a ceiling panel 2 is manufactured in a factory.

As shown in FIG. 3, the floor panel 3 is provided with two parallel long-side floor girders 30 made of, for example, channel steel, and an ALC (high temperature and high pressure steam curing) is provided between the floor girders 30. A fireproof floor material 31 made of lightweight cellular concrete is attached, and a plurality of floor joists 32, which are joists, are attached on the fireproof floor material 31 at substantially equal intervals. That is, a bracket 33 having an L-shaped cross section as shown in FIG. 4 is fixed to the floor girder 30, and the refractory floor material 31 is placed on the bracket 33 and fixed with bolts and nuts 34. ing. The refractory floor material 31 has a thickness of 100 mm, for example, and has sufficient strength. As shown in FIGS. 4 and 7, the floor beam 32 includes a bracket 35 having an L-shaped cross section, and the refractory floor material 3 is formed.
It is fixed at 1.

An underfloor bounding wall 36 is attached on the refractory floor material 31 at a substantially middle position in the longitudinal direction of the floor girders 30, 30. The underfloor bounding wall 36 is, as shown in FIG. It extends to the vicinity. This underfloor wall 36
As shown in FIGS. 3 and 7, the elongated first and second boundary wall members 36
A, 36B, and each of the boundary wall members 36A, 36B,
For example, a base material 37 formed of wood or the like and the base material 37
And a face material 38 made of, for example, two stacked gypsum board plates attached to the outer surface of the. The boundary wall members 36A and 36B are attached so as to face each other so that the face member 38 is on the outside. At this time, the refractory floor material 31 is arranged below the boundary wall members 36A and 36B in a continuous portion as shown in FIGS.

These boundary wall members 36A and 36B are also designed to be attached to the bracket 35 attached to the refractory floor material 31 by nailing or the like. At this time, the boundary wall members 36A and 36B are The upper end surface is flush with the upper surface of the floor girder 30. The height of the floor beam 32 is substantially equal to the height of the base material 37 of the boundary wall members 36A and 36B. Further, a heat insulating material 49 such as glass wool or rock wool is provided inside the underfloor boundary wall 36.

As shown in FIG. 7, a floor surface member 39 made of, for example, a particle board is attached to the upper surfaces of the floor girder 30, the floor girder 32, and the floor lower wall 36. The space between the floor material 39 and the refractory floor material 31 is an underfloor space C. Therefore, the underfloor space C is partitioned by the underfloor boundary wall 36. Then, such a floor panel 3 is manufactured in a factory.

As shown in FIG. 5, each of the two end panels 4 has two columns 40. The upper ends of these columns 40 are connected by short side ceiling girders 41, and the lower ends are short. The floor beams 42 are connected to each other. Then, each gable panel 4 is arranged and assembled at both ends of the ceiling panel 2 and the floor panel 3 in the total assembling process as described above, so that the building unit 1 as shown in FIG. 1 is configured. It has become.

A space between the floor surface material 39 and the ceiling surface material 23 of the building unit 1 is a living room space B, and the living room space B is partitioned by a living room boundary wall 44. That is, the living room boundary wall 44 is the first and second boundary wall panels 44A,
44B, each of the boundary wall panels 44A and 44B is a panel frame 45 in which a base material made of wood or the like is used as a frame.
And a face material 46 made of, for example, two stacked gypsum board plates attached to the outer surface of the panel frame 45. As shown in FIG. 7, two square-shaped receiving members 47 are fixed to the lower surface of the ceiling surface member 23 at a portion to which each of the boundary wall panels 44A and 44B is attached. On the upper surface of the member 39, one square-shaped contact member 48 is fixed below the central position between the receiving members 47.

The boundary wall panels 44A and 44B are
As shown in FIG. 1, after pressing the respective lower end portions against the side surfaces of the abutting member 48, raising the upper portion and pressing the upper end portion against the receiving member 47, the lower end portion is on the floor surface member 39, and the upper end portion is on. Each of them is attached to the receiving member 47 by a nail or the like. Each boundary wall panel 44A, 44B
Are attached so as to face each other so that the face material 46 is on the outside, and inside the panel frame 45, as shown in FIG. 7, a heat insulating material 49 such as glass wool or rock wool is attached. . In addition, such a living room boundary wall 44 is also attached in advance in a factory.

A lower floor building unit 10 is shown in FIG. The structure of the lower-floor building unit 10 is almost the same as that of the upper-floor building unit 1 described above except for the floor panel 13, and therefore, the same structure and the same members are denoted by the same reference numerals and the description thereof will be omitted. For simplicity, only the floor panel 13 will be described. The floor panel 13 of the lower-floor building unit 10 is not attached with the refractory floor material 31, but only with the floor beam 14. The height dimension of this floor girder 14 is formed higher than the height of the floor girder 32 of the floor panel 3 of the upper floor building unit 1, and the floor girder 32 and the fireproof floor material 31 of the upper floor building unit 1 are formed. It is almost equal to the total height. Therefore, the underfloor space C ′ of the floor panel 13 is wider in the vertical direction than the underfloor space C of the upper floor building unit 1.

FIG. 7 shows a state in which the lower floor building unit 10 and the upper floor building unit 1 are combined on site. When the upper-floor building unit 1 is placed on the lower-floor building unit 10, the ceiling back wall 24, the living room boundary wall 44, the underfloor boundary wall 36 of the upper-floor building unit 1, and the ceiling of the lower-floor building unit 10 are placed. The back boundary wall 24 and the room boundary wall 44 are arranged on the same extension line in the vertical direction.

Further, the ceiling back wall 24 and the living room boundary wall 44 of the upper and lower building units 1, 10 are vertically divided by the ceiling panel 23, respectively, and the lower floor boundary wall 36 and the living room wall of the upper building unit 1 are separated. The floor surface material 39 separates from the upper and lower parts 44.
A refractory floor material 31 is disposed between the upper and lower building units 1 and 10, and a soft refractory material 16, for example, is packed in a gap formed between the upper and lower floor building units 1 and 10, although not shown. ing.

On the upper part of the ceiling back wall 24 of the upper-floor building unit 1, a wall wall space 51 having a U-shaped cross section is arranged. This boundary wall shade 51 is formed of two layers of gypsum board, and the edge portions 51A hanging at both ends cover the surface members 26, 26 on the outside of the ceiling back boundary wall 24.

The space between the ceiling space A and the roof panel 60 constituting the roof 6 is an attic space D, and an attic space wall 61 is arranged in the attic space D. The hut back wall 61 is a frame member 62 formed of, for example, a square pipe.
And a face member 63 made up of two gypsum boards attached to both sides of the frame member 62. The side wall shape of such a hut backside wall 61 is formed, for example, in a triangular shape corresponding to the shape of the roof 6, and nails are formed on the upper part of the above-mentioned boundary wall shade 51 and the lower surface of the roof panel 60, for example. It is designed to be attached by hammering. A roof finishing material 64 is attached to the upper surface of the roof panel 60.

As described above, the unit type building constructed by combining the building units 10 and 1 with other building units arranged at the adjacent positions of these building units 10 and 1 is the building unit 10,1. The central part is each boundary wall 2
Since it is partitioned by 4, 44, 36, etc., it is an apartment house.

According to this embodiment as described above, the following effects can be obtained. That is, 1) Since the base material 25 of the ceiling back wall 24 of each of the building units 1 and 10 is installed between the respective ceiling girders 20, the small ceiling material to be installed at the position of the base material 25. The beams 22 are unnecessary, and the amount of the material is reduced. Therefore, even when the ceiling back wall 24 is arranged, the ceiling panel 2 can be manufactured with a small amount of material. 2) Since the base material 25 of the ceiling back wall 24 is laid in parallel with the ceiling beam 22, it is not necessary to form a groove in the base material 25 as in the prior art, which simplifies the structure. , Easy to install. 3) Since the base material 25 of the ceiling back wall 24 is installed between the ceiling girders 20, the ceiling back wall 24 can be attached without the ceiling beam 22.

4) Underfloor boundary wall 36 of building units 1 and 10
Since the base material 37 of is erected between the floor girders 30,
The floor beam 32, which is planned to be installed at the position of the base material 37, becomes unnecessary, and the amount of material is reduced accordingly.
Even when the underfloor boundary wall 36 is arranged, the floor panel 2 can be manufactured with a small amount of material. 5) Since the base material 37 of the underfloor wall 36 is laid in parallel with the floor beam 32, it is not necessary to form a groove in the base material 37 as in the conventional case, which simplifies the structure and Installation is also easy. 6) Since the base material 37 of the underfloor wall 36 is installed between the floor girders 30, the underfloor wall 36 can be attached without the floor girder 32.

7) The upper and lower floor building units 1 and 10 are provided with the boundary walls 24 and 44, respectively, and the refractory floor material 31 is placed between the upper and lower floor building units 1 and 10. At the time of a fire from one of the horizontally adjacent dwelling units on the upper and lower floors, the fire will become
Since it is stopped by 4, 44 and the like and the refractory floor material 31, it is possible to prevent the spread of fire to the other one of the dwelling units and also to prevent the spread of fire between the upper and lower building units 1 and 10. 8) The fireproof flooring material 31 attached to the floor panel 3 of the upper floor building unit 1 has sufficient strength because it has a thickness dimension of about 100 mm. Can withstand such loads.

9) Since the fire-resistant floor material 31 attached to the floor panel 3 of the upper floor building unit 1 is continuous at the parts of the lower floor boundary wall 36 and the ceiling back boundary wall 24, the ceiling of the lower floor building unit 10 Even if the backside wall 24 and the underfloor boundary wall 36 of the upper floor building unit 1 are misaligned and a gap is formed between them,
Alternatively, the ceiling back wall 24, the refractory floor material 31, and the underfloor wall 3
Even if there is a gap between 6 and the refractory floor material 31,
Since the fire that has entered through these gaps at the time of a fire is stopped by the refractory floor material 31, there is no risk that the fire in the lower-floor building unit 10 will move to the upper-floor building unit 1.

10) Since the boundary walls 24, 44, etc. arranged in the building units 1, 10 on the upper and lower floors are two layers of gypsum board with a thickness of about 15 mm, ensure sufficient fireproofing and sound insulation. it can. 11) To install the living room boundary wall 44 of the upper and lower floor building units 1 and 10, press the lower parts of the first and second boundary wall panels 44A and 44B against the contact member 48 and raise the upper part to receive the receiving member 47.
After pressing it against, it can be mounted with nails or the like, which facilitates the mounting work. 12) Each wall 2 placed in the upper and lower building units 1 and 10
Since a heat insulating material 49 such as glass wool and rock wool is provided inside 4, 44 and the like, the wall is excellent in fireproofness, heat insulation and sound insulation.

A second embodiment of the present invention is shown in FIGS. In this embodiment, the floor panel 3 of the upper floor building unit 1 in the first embodiment, to which the refractory floor material 31 is attached, is replaced by the upper floor building unit 1 including the floor panel 3'without the refractory floor material 31. ' That is, the floor girders 32 'are installed between the floor girders 30 of the floor panel 3'of the upper floor building unit 1'and the floor girders 3'
An underfloor boundary wall 36 'is installed in parallel with 2'and at an intermediate position in the longitudinal direction of the upper floor building unit 1'. The underfloor boundary wall 36 'has substantially the same structure as the underfloor boundary wall 36, and has first and second boundary wall members 36A', 36B '.
These boundary wall members 36A 'and 36B' are formed of a base material 37 'and a face material 38' made of two stacked gypsum boards attached to the outside of the base material 37 '. .

These boundary wall members 36A 'and 36B' are
As shown in FIG. 9, brackets 53 are installed between the floor girders 30 of the floor panel 3 ′, and the height dimension thereof is the boundary wall member 3 of the underfloor boundary wall 36 of the first embodiment.
It is almost equal to the total height dimension of 6A, 36B and refractory floor material 31. In addition, the height dimension of the floor beam 32 'of the floor panel 3'of the upper floor building unit 1'is the boundary wall member 36.
The height is slightly lower than the height of A ', 36B'. In other words, the upper floor building unit 1'of this embodiment is the same building unit as the lower floor building wall of the floor building 13 of the lower floor building unit 10 of the first embodiment. In this embodiment, the same structures and members as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted or simplified. Even in such an embodiment, the same effects as 1) to 6) and 10) to 12) of the first embodiment can be obtained.

The present invention is not limited to the above-mentioned embodiments, but includes the following modifications as long as the object of the present invention can be achieved. For example, in each of the above-mentioned embodiments, the ceiling back wall 24 and the living room boundary wall 44 are divided by the ceiling surface material 23, and the underfloor boundary wall 36 and the living room boundary wall 44 are divided by the floor surface material 39. Not limited to this, each wall 2
You may continue 4,36,44.

In each of the above-mentioned embodiments, the boundary walls 24, 36,
The face materials 26, 38, 46 of 44 are formed by stacking two gypsum boards having a thickness of about 15 mm, but the thickness of the gypsum boards is not limited, and may be 15 mm or more or less. Alternatively, the face materials 26, 38, and 46 are formed by stacking two gypsum boards, but may be formed by one gypsum board having a thickness dimension similar to that of two stacks.

Furthermore, in each of the above-mentioned embodiments, the fireproof flooring material 31 is formed of an ALC panel having a thickness dimension of about 100 mm, but the thickness dimension of the fireproof flooring material 31 is not limited to this.
It may be greater than or equal to 00 mm or less. Alternatively, the refractory floor material 31 need not be an ALC panel as long as it is a similar material having the same strength, fire resistance, weight, etc. as the ALC panel.

Further, in each of the above embodiments, each of the boundary walls 24, 3
Although 6,36 'and 44 are arranged at substantially intermediate positions in the longitudinal direction of the building units 1 and 10 and 1'and 10, the arrangement position is not limited to this, and the arrangement position is to any one of the columns 40 in the longitudinal direction. You may arrange in the near position. In short, according to the present invention, the base materials 25, 37, 45 forming the boundary walls 24, 36, 36 ', 44 may be installed on the ceiling girders 20, 41.

[0047]

As described above, in the boundary wall structure of the building unit according to the present invention, the base material of the ceiling back boundary wall is installed between the ceiling girders of the building unit, so the base material is attached. Since it is not necessary to provide the ceiling beam in the portion and the ceiling beam is not necessary for that portion, the ceiling back portion can be formed with a small amount of material even when the ceiling back wall is attached.

Further, in the boundary wall structure of the building unit according to the present invention, since the base material of the underfloor boundary wall is laid between the floor girders, it is not necessary to provide the floor girder at the portion where the base material is attached. Therefore, since the floor beam is not required, the lower part of the floor can be formed with a small amount of material even when attaching the underfloor boundary wall.

[Brief description of drawings]

FIG. 1 is a perspective view showing a building unit according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a ceiling panel of this embodiment.

FIG. 3 is an exploded perspective view showing a floor panel of this embodiment.

FIG. 4 is a cross-sectional view showing the main parts of the floor panel of this embodiment.

FIG. 5 is an exploded perspective view showing an upper floor building unit of the present embodiment.

FIG. 6 is a cross-sectional view showing a lower floor building unit of the present embodiment.

FIG. 7 is a cross-sectional view showing each wall that extends over the upper and lower floor building units of this embodiment.

FIG. 8 is a cross-sectional view showing the second embodiment of the present invention and showing the respective boundary walls over the upper and lower floor building units.

FIG. 9 is a cross-sectional view showing the main parts of the second embodiment.

[Explanation of symbols]

 1 Building unit (upper floor) 2 Ceiling panel 3 Floor panel 4 Gable panel 5 Frame 10 Building unit (lower floor) 13 Floor panel of lower floor building unit 20,41 Ceiling girder 22 Ceiling beam 23 Ceiling surface material 24 Ceiling lining Walls 30, 42 Floor girders 31 Fire-resistant flooring materials 32 Floor girders 36 Floor lower boundary walls 40 Pillars 44 Living room boundary walls 61 Hut behind the walls A Ceiling space B Living room space C Floor space D Hut space

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location E04B 2/56 632 B CH H 645 F BC

Claims (6)

[Claims] 1. A building unit includes a framework including four pillars standing upright at four corners, and a ceiling girder and a floor girder connecting upper ends and lower ends of these pillars. Together with the boundary wall structure of the building unit in which the ceiling back wall is provided in the ceiling back space between the pillars, the ceiling back boundary wall is formed to include an outer fire resistant surface material and an inner base material, A boundary wall structure for a building unit, wherein a base material is installed between the ceiling girders. 2. The building wall structure of a building unit according to claim 1, wherein the base material is parallel to a ceiling girder installed between the ceiling girders. Boundary wall structure. 3. The boundary wall structure for a building unit according to claim 1, wherein a room boundary wall is provided below the ceiling back wall, and the ceiling back wall and the room boundary wall are ceilings. A boundary wall structure of a building unit characterized by being divided by face materials. 4. A building unit includes a framework including four pillars standing upright at four corners, and a ceiling girder and a floor girder connecting upper ends and lower ends of these pillars. In addition, in the boundary wall structure of the building unit in which an underfloor boundary wall is provided in the underfloor space between the columns, the underfloor boundary wall is formed to include an outer fire resistant surface material and an inner base material, and A wall structure of a building unit, wherein a material is erected between the floor girders. 5. The building unit wall structure according to claim 4, wherein the base material is in parallel with a floor beam which is erected between the floor girders. Boundary wall structure. 6. The boundary wall structure for a building unit according to claim 4, wherein a room boundary wall is provided above the underfloor boundary wall, and the underfloor boundary wall and the room boundary wall are floor coverings. Boundary wall structure of a building unit characterized by being divided by.