JPH0821024A - Floor structure of building unit - Google Patents

Abstract

PURPOSE:To relatively increase the height of a ceiling by forming a floor backing material by plural plate materials such as a fire-proofing material, a particle board and so on, and installing the floor backing material to the floor joists below the upper surface of a lower beam. CONSTITUTION:Plural floor joists 4, 4 are laid on two lower beams 2... disposed opposite to each other, and floor backing materials 5, 5 and floor covering materials 6, 6 are disposed thereon. The floor backing material 5 is formed by plural upper and lower plate materials, preferably some of them are fire- proofing materials 7, 7 such as a plaster board or the like, and the others are particle boards 8.8. The floor backing material 5 is installed on the floor joists 4 below the upper surface of the lower beam 2. Further, face materials 9... are disposed stretching over the lower beams 2 adjacent to each other of the adjacent building units 1,1, a fire-proofing material 7 is disposed on the face material 9, and the upper surface of the particle board 8 is made be substantially flush with the upper surface of the face material 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a building unit in which a floor base material and a floor finish material are arranged on a plurality of joists.

[0002]

[Background Art] In order to shorten the construction period at a construction site, in a factory, a plurality of building units are manufactured by attaching outer wall materials, interior materials, etc. to a frame formed of upper beams, lower beams and columns, and building these units. After transporting the unit to the construction site,
A unit-type building that is a combination of front, rear, left and right, and upper and lower is constructed. In this building unit, a plurality of joists are installed on two lower beams facing each other, a floor base material is placed on these joists, and a floor finishing material is placed on this floor base material. The floor is composed.

Conventionally, the upper surface of the joist has the same height as or higher than the upper surface of the lower beam, and the upper surface directly supports the floor base material. Therefore, the upper surface of the floor finishing material is formed to be equal to or more than the thickness (height) of the floor finishing material and the floor base material from the upper surface of the lower beam. Conventionally, the floor base material is composed of one particle board. In order to make the unit type building quasi-fireproof, it is conceivable to overlay a fireproof material such as gypsum board on this particle board, which is shown in FIG. In FIG. 3, joists 52 are installed on the lower beams 51 of the two building units 50 facing each other. A particle board 53 is arranged above the joists 52, a gypsum board 54 is arranged on the particle board 53 as a refractory material, and a floor finishing material 55 is arranged on the gypsum board 54. A particle board 56 for connection, a gypsum board 57, and a floor finishing material 58 are arranged in the joint portion of the adjacent building units 50, straddling two lower beams 51 adjacent to each other.

[0004]

In the above-mentioned conventional example, since the upper surface of the joist is at the same height as or higher than the upper surface of the lower beam, as shown in FIG. As particle board 5
In addition to No. 3, when a gypsum board 54 is newly arranged on the joist 52, the upper surface position of the floor finishing material 55 becomes higher by the thickness of the gypsum board 54, and the ceiling height becomes relatively lower accordingly. There is a problem. When the ceiling height becomes relatively low, not only the living space becomes narrower, but also conventionally used members such as partitions may be unusable unless the height dimension is changed.

An object of the present invention is to provide a floor structure of a building unit which can increase the ceiling height.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention is intended to achieve the above object by lowering the height position of the upper surface of the joist installed between two lower beams facing each other.
Specifically, the floor structure of the building unit of the present invention is a building in which a plurality of joists are installed on two lower beams that are arranged to face each other, and a floor base material and a floor finishing material are placed on these joists. The floor structure of the unit is characterized in that the floor base material is attached to the joists below the upper surface of the lower beam, and the floor finish material is arranged on the floor base material.

Here, the floor base material is composed of a plurality of upper and lower plate materials, and some of the plate materials may be fireproof materials such as gypsum board. The remaining part of the plate material may be particle board. Further, a face material is arranged straddling two lower beams adjacent to each other in adjacent building units, a refractory material is arranged on the face material, and the remaining part of the plate material (for example, The upper surface of the particle board) is the same as or substantially the same as the upper surface of the face material, and the refractory material may be arranged on the remaining part of the plate material (particle board).

[0008]

In the factory, two lower beams are arranged to face each other, a plurality of joists are erected on these lower beams to manufacture a floor panel, and columns and upper beams are combined with this floor panel to form a skeleton. The building unit is manufactured by attaching outer wall materials and necessary interior materials to this frame. At this time, the floor base material is placed on the joists erected on the lower beam. The floor base material is attached to the joists below the upper surface of the lower beam, and the floor finishing material is placed on the floor base material. To place. After transporting the building unit manufactured in this way to the construction site, the unit type building is constructed by combining the building unit in the front, back, left, right, and top on the foundation. There is a gap between adjacent building units,
This gap is closed with a floor base material for connection and a floor finish material.

If the floor base material is composed of a plurality of upper and lower plate materials, and some of the plate materials are fireproof materials, this fireproof material has fire resistance. Heat is less likely to be transferred under the refractory material, and joists and lower beams are not overheated. Also, a face material such as plywood is arranged straddling two lower beams adjacent to each other in adjacent building units, and a refractory material for connection is arranged on the face material,
If the upper surface of the remaining part of the plate material (particle board) is the same as or substantially the same as the upper surface of the face material, and the refractory material is arranged on the particle board,
Refractory materials and floor finishes can use the same thickness of material inside the building units and at the seams between the building units. Moreover, since the face material supports a refractory material such as a gypsum board which is arranged so as to straddle two adjacent lower beams, cracks or the like of the refractory material can be eliminated.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a floor structure of a building unit according to a first embodiment of the present invention. In FIG. 1, two building units 1 are arranged side by side. Each of these building units 1 constitutes a living room or the like, and has a structure in which an unillustrated outer wall material or interior material is attached to a substantially box-shaped frame formed of a lower beam 2, columns 3 and an upper beam (not shown). is there. These building units 1 are combined in a front-rear direction, a left-right direction, and a vertical direction on a foundation (not shown) to form a unit-type building.

The lower beams 2 of one building unit 1 facing each other are formed in a U-shaped cross-section with their openings facing inward. A plurality of wooden joists 4 (only one is shown in FIG. 1) are installed on these lower beams 2. The lower end of the joist 4 is supported by the lower end of the lower beam 2,
Moreover, the upper end surface thereof is formed below the upper surface of the lower beam 2. A floor base material 5 is arranged on the joists 4, and a floor finishing material 6 made of a flooring material is arranged on the floor base material 5. The floor base material 5 is composed of a plurality of upper and lower plate materials, some of which are refractory materials 7 composed of gypsum board or the like, and the rest of which are particle boards 8. This particle board 8 is a lower beam 2
Is attached to the joist 4 below the upper surface of the above, and the refractory material 7 is disposed on the particle board 8.

At a joint between adjacent building units 1, a face member 9 made of plywood or the like is arranged across two lower beams 2 which are close to each other. The thickness of this face material 9 is determined so that the upper surface thereof is the same as or substantially the same as the upper surface of the particle board 8 attached to the joist 4. Face material 9
A refractory material 10 for connection is arranged on the above. The refractory material 10 for connection is made of gypsum board or the like.
A floor finishing material 11 for connection is arranged on the refractory material 10. The connection refractory material 10 and the refractory material 7 cover the lower beam 2 and have the same thickness in order to make the unit type building a semi-fire resistant specification. The floor finishing material 11 for connection is made of flooring material, and is used as the floor finishing material 6
It has the same thickness as. Therefore, there is substantially no step between the floor finishing material 6 and the connection floor finishing material 11.

A method of constructing the floor structure of this building unit will be described. The building unit 1 is manufactured in the factory. Therefore, two lower beams 2 are arranged to face each other, and a plurality of joists 4 are erected on these lower beams 2 to manufacture a floor panel, and columns 3 and upper beams are combined with this floor panel to form a skeleton. , Attach external wall materials and necessary interior materials to this frame. Further, the particle board 8 is attached to the joist 4 on the joist 4 so that the upper surface thereof is lower than the upper surface of the lower joist 2. The refractory material 7 is placed on the particle board 8, and the floor finishing material 6 is placed on the refractory material 7.

After the building unit 1 manufactured in this manner is transported to the construction site, the unit type building is constructed by combining the building unit 1 in the front-rear, left-right and up-down directions on the foundation. There is a gap between the adjacent building units 1, but in order to close this gap, the face material 9 is placed on the two lower beams 2 that are close to each other, and the fire resistance for connection is placed on the face material 9. The material 10 and the floor finishing material 11 are arranged.

As described above, according to the first embodiment, since the particle board 8 as the floor base material is attached to the joist 4 below the upper surface of the lower beam 2, the ceiling height becomes relatively high.
Therefore, even if the floor base material is composed of the two refractory materials 7 and the particle board 8, the living space does not become small.
Further, since the floor base material 5 is composed of a plurality of upper and lower plate materials, and a part of the plate materials is the refractory material 7, it is possible to make the unit type building a semi-fire resistant specification.

Further, a face material 9 is arranged straddling two lower beams 2 adjacent to each other in adjacent building units 1, and a refractory material 10 for connection is arranged on the face material 9. Since the upper surface of the face material 9 is the same as or substantially the same as the upper surface of the particle board 8 on the joist 4, and the refractory material 7 is arranged on this particle board 8, the connection refractory material 10 is damaged by a plaster board or the like. The refractory material 10 is supported by the face material 9 so that it will not be damaged even if it is a member that is easy to perform. Since the finishing materials 5 and 11 can be arranged, the members can be made common.

Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in the structure of the floor base material, and the other structures are the same as those in the first embodiment. Here, in FIG. 2, the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In FIG. 2, the floor base material of the second embodiment is made up of only the particle board 8 without the refractory material. That is, the particle board 8 is attached to the joists 4 below the upper surface of the lower beam 2, and the floor finishing material 6 is disposed on the particle board 8. Adjacent building unit 1
The face material 9 is arranged straddling two lower beams 2 adjacent to each other, and the floor covering material 11 for connection is arranged on the face material 9.

The construction method of the floor structure of the building unit of the second embodiment thus constructed is the same as the construction method of the floor structure of the building unit of the first embodiment. As described above, according to the second embodiment, similarly to the first embodiment, the particle board 8 is attached to the joist 4 below the upper surface of the lower beam 2, so that the ceiling height becomes relatively high. Can play.

The present invention is not limited to the configuration of the above embodiment, but includes the following modified examples as long as the object of the present invention can be achieved. For example, in the first embodiment, the floor base material 5 is composed of a plurality of upper and lower plate materials, of which a part of the plate material is the refractory material 7 and the remaining part of the plate material is the particle board 8. In the invention, these plate materials may be other plate materials, for example, plywood. Even if the floor base material 5 is composed of the refractory material 7 and the particle board 8, the upper and lower positions thereof are opposite to those in the first embodiment, that is, the refractory material 7 is arranged on the joist 4, The particle board 8 may be arranged on the refractory material 7.

Further, in the first and second embodiments, the face material 9 is arranged so as to straddle the two lower beams 2 adjacent to each other in the adjacent building units 1, but the face material 9 is not necessarily arranged. It doesn't need to be done. Further, the building unit to which the floor structure is applied is the building unit 1 in which the substantially box-shaped frame is formed from the lower beam 2, the pillar 3 and the upper beam (not shown) in the first and second embodiments. The invention can be applied to a building unit in which a frame is formed from a floor panel, a gable panel, and a ceiling panel formed by combining the lower beams 2.

[0021]

As described above, according to the present invention, since the floor base material is attached to the joists below the upper surface of the lower beam, the ceiling height becomes relatively high. Therefore, even if the floor base material is composed of a plurality of upper and lower plate materials, the living room space does not become narrow. Further, if the floor base material is composed of a plurality of upper and lower plate materials, and a part of the plate materials is made of a fire resistant material, the unit type building can be made into a semi-fire resistant specification. Furthermore, a face material is placed across two lower beams that are adjacent to each other in adjacent building units, and a refractory material for connection is placed on this face material. If the refractory material is placed on the top surface of the remaining part of the plate that is placed on the same or substantially the same surface and the refractory material is placed on the remaining part of the plate, the connecting refractory material is supported by the face material In addition, since the refractory material and the floor finishing material having the same thickness can be respectively disposed on the face material and the remaining part of the plate material, the members can be shared.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a floor structure of a building unit according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a floor structure of a building unit according to a second embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing a state in which a refractory material is overlaid on a particle board constituting a floor base material of a building unit, for explaining the background to which the present invention is proposed.

[Explanation of symbols]

 1 Building Unit 2 Lower Beam 4 Joist 5 Floor Substrate 6 Floor Finishing Material 7 Fireproof Material 8 Particleboard 9 Face Material 10 Fireproof Material for Connection 11 Floor Finishing Material for Connection

Claims (3)

[Claims] 1. A floor structure of a building unit in which a plurality of joists are installed on two lower beams which are arranged to face each other, and a floor base material and a floor finishing material are placed on these joists. A floor structure of a building unit, wherein the floor base material is attached to the joists below an upper surface of a beam, and the floor finish material is arranged on the floor base material. 2. The floor structure of a building unit according to claim 1, wherein the floor base material is composed of a plurality of upper and lower plate materials, and a part of the plate materials is a fireproof material. Floor structure. 3. A floor structure of a building unit according to claim 2, wherein a face material is arranged so as to straddle two lower beams adjacent to each other in adjacent building units, and the connecting member is connected on the face material. Arranging a refractory material, the upper surface of the remaining part of the plate material is the same or substantially the same as the upper surface of the face material, and the refractory material is arranged on the remaining part of the plate material. The floor structure of the building unit characterized by the above.