JPH0813675A - Piping structure under floor - Google Patents

Abstract

PURPOSE:To facilitate fitting works of floor joists regardless of kinds and sizes of pipes and the fitting positions. CONSTITUTION:In a piping structure under a floor in which floor members 10 are arranged on a plurality of parallelly installed joists 8A, 8B, the joists 8A, 8B are parallelly installed at every equal distance P and a pipe 15 is laid at a part 9 lacking in joists. Reinforcing floor members 11 which have the same level with the floor members 10 or almost the same level with it at the upper face and the thicker members than the floor members 10, are laid on the lacking part 9 in joists.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor piping structure in which piping is arranged under a floor member.

[0002]

BACKGROUND ART Buildings are constructed by various construction methods such as conventional construction methods, panel construction methods and unit construction methods. Among them, the unit construction method, in order to shorten the construction period at the construction site, in the factory, manufacturing a plurality of building units in which outer wall materials, interior materials, etc. are attached to the frame formed from upper beams, lower beams and columns, After transporting these building units to the construction site, they are combined in front, back, left and right, and up and down to construct a unit type building. This unit-type building also has a underfloor piping structure in which a floor member is arranged on a plurality of joists arranged in parallel and piping is arranged under the floor member, as in the case of a building by another construction method.

In this underfloor piping structure, the joists are conventionally arranged so as to avoid the installation position of the piping so that the joists do not interfere with the installation of the piping. Since the size and the mounting position of the pipe differ depending on the type, conventionally, the mounting position of the joist is changed according to the type of the pipe. For example, in the unit construction method, in the factory,
A plurality of joists are bridged between two lower beams that are arranged to face each other, but the installation positions of these joists differ depending on the presence or absence of piping, the size of the piping, and the installation position.

[0004]

In the above-mentioned conventional example, since the installation position of the joist is changed according to the type and size of the pipe, there is a problem that the installation work of the joist becomes complicated. Therefore, particularly in the case of a building by the unit construction method, standardization of the building unit cannot be achieved, and there is a disadvantage that the manufacturing efficiency of the building unit cannot be improved.

It is an object of the present invention to provide an underfloor piping structure which facilitates the work of attaching joists regardless of the type, size or attachment position of the pipe.

[0006]

Therefore, according to the present invention, the joist attachment position is standardized regardless of the size and attachment position of the pipe, and the arrangement position of the pipe is a joist defect portion in which the joist is lost and the joist defect is generated. It is intended to achieve the above-mentioned object by providing a reinforcing floor member to the portion. Specifically, the underfloor piping structure of the present invention is an underfloor piping structure in which a floor member is arranged on a plurality of joists arranged side by side and piping is arranged under this floor member, and the joists are arranged in parallel. The intervals are equal intervals, the position where the pipe is arranged is a joist defect part in which joists are missing, and the top surface of the joist defect part is the same as or substantially the same as the top surface of the floor member, and the thickness is also the same. Is provided with a reinforcing floor member thicker than the floor member.

Here, the reinforcing floor member may have a structure in which both sides thereof are supported by joists on both sides of the joist defect portion. Furthermore, the joists on both sides of the joist defect portion may be made of metal. Further, the reinforcing floor member may be formed of a single plate material, or a first plate material having lower surfaces on both sides supported by joists on both sides of the joist defect portion, and the first plate material. It may be formed of a plurality of plate materials including the second plate material joined to the lower surface. Furthermore, the underfloor piping structure of the present invention may be applied under the floor of a building unit that constitutes a unit-type building.

[0008]

[Function] A plurality of joists are arranged in parallel at equal intervals, and the floor member is arranged on these joists. At this time, the joist is not arranged above the portion where the pipe is arranged, and the joist is cut to form a jog defect portion, and the pipe is attached to a predetermined position from the jog defect portion. Then, the joist defect portion is closed with a reinforcing floor member. In this state, since the upper surface of the reinforcing floor member is the same as or substantially the same as the upper surface of the floor member, there is no step between the reinforcing floor member and the floor member adjacent to the reinforcing floor member.

Here, when both sides of the reinforcing floor member are supported by the joists on both sides of the joist defect portion, both sides of the reinforcing floor member are fixed to the joists with nails or the like. Furthermore, when the underfloor piping structure is applied to a building unit that constitutes a unit-type building, the above-mentioned work is performed when the building unit is manufactured. That is, in a factory, a plurality of joists are arranged side by side at equal intervals between two long side lower joists that are facing each other and a joist defect portion is formed. Attach two gable panels consisting of two short-side beams and two columns, attach a ceiling panel to the upper end of these gable panels to form a frame, and attach external wall materials and interior materials to this frame. . Further, a floor member is arranged on the joist, a pipe is arranged at the joist defect portion, and then the joist defect portion is closed by the reinforcing floor member. After the building unit manufactured in this way is transported to the construction site, it is placed on a foundation to construct a unit-type building.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a framework of a building unit to which a pipe underfloor structure according to a first embodiment of the present invention is applied. In FIG. 1, a building unit 1 has a long box upper beam 2, a short side upper beam 3, a column 4, a long side lower beam 5 and a short side lower beam 6 and a substantially box-shaped frame 7 is formed on the frame 7. It is a structure with external wall materials and interior materials attached. A plurality of building units 1 having this structure are combined in a front-rear direction, a left-right direction, and an upper-lower direction on a foundation (not shown) to form a unit-type building. Two long-side lower beams 5 are arranged so as to face each other, and a plurality of joists 8A and 8B are arranged in parallel so as to span the long-side lower beams 5. These joists 8A and 8B are arranged at equal intervals of the dimension P, and joist defect portions 9 are formed in a part thereof. The joist defect portion 9 is formed by missing one joist and has a width dimension of 2P. The joists 8A on both sides of the joist defect portion 9 are made of metal, and the other joists 8B are made of wood.

FIG. 2 shows the underfloor piping structure of the first embodiment. In FIG. 2, floor members 10 are arranged on the joists 8A and 8B on both sides of the joist defect portion 9, respectively. The floor member 10 is composed of a particle board having a thickness D ₁ , and is fixed to the joists 8A and 8B with nails. A reinforcement floor member 11 is provided on the joist defect portion 9. The reinforcing floor member 11 has a first plate member 12 whose lower surfaces are supported by the joists 8A on both sides of the joist defect portion 9 and a second plate member 13 which is joined to the lower surface of the first plate member 12.
It is formed from a single plate. The first and second plate members 12 and 13 are each made of particle board, and a floor finishing material (for example, flooring material) (not shown) is arranged on the first plate member 12 and the floor member 10. .

The thickness of the first plate member 12 is the same as that of the floor member 10.
D ₁ and the thickness of the second plate member 13 is D ₂ . Therefore,
The upper surface of the reinforcing floor member 11 is the same as the upper surface of the floor member 10, and the total thickness thereof is (D ₁ + D ₂ ), which is thicker than the floor member 10. The upper surface of the reinforcing floor member 11 does not necessarily have to be completely the same as the upper surface of the floor member 10, and may be substantially the same. The term “substantially the same” means a range in which there is substantially no step between the reinforcing floor member 11 and the floor member 10.
Further, in FIG. 2, the first plate member 12 and the second plate member 13 are each composed of one plate member, but these plate members 1
Either or both of 2 and 13 may be composed of a plurality of plate materials.

Joists 8A arranged on both sides of the joist defect portion 9
Are each formed in a U-shape in cross section, and metal brackets 14 made of a long angle member are fixed to the side portions facing each other. These brackets 14 are structured to support both lower surface sides of the second plate member 13, respectively. The reinforcing floor member 11 is fixed to the joist 8A and the bracket 14 with a nail. Under the reinforcing floor member 11, a plurality of pipes 15 for hot water supply, drainage, etc. are arranged. A part of these pipes 15 is guided to the inside of the building unit 1 through a hole 11A (see FIG. 1) formed in the reinforcing floor member 11, and the remaining part is part of another building unit (not shown). It is being guided inside.

In order to construct the above-mentioned underfloor piping structure, first, the building unit 1 is manufactured in a factory. Therefore, a plurality of joists 8A, 8B are arranged in parallel between two long side lower beams 5 facing each other at equal intervals (size P), and the two joists 8A are separated from each other by a size 2P and the joist defect portion is formed. 9 is formed. Here, the bracket 14 is fixed to the joist 8A in advance. Furthermore, a gable panel is formed from the short side lower beam 6, the short side upper beam 3 and the pillar 4, and a ceiling panel is formed from the long side upper beam 2 and a ceiling beam or the like (not shown). A gable panel is attached to the ends of the two long-side lower beams 5, a ceiling panel is attached to the upper ends of the gable panels to form a frame 7, and an external wall material and an interior material (not shown) are attached to the frame 7. Further, the pipe 15 is attached from the joist defect portion 9, the floor member 10 is arranged on the joists 8A and 8B, and the floor member 10 is fixed with nails to the joists 8A and 8B.
Fixed to. Block the joist defect part 9 with the reinforcing floor member 11,
The reinforcing floor member 11 is fixed to the joist 8A and the bracket 14 with a nail. Further, the reinforcing floor member 11 and the floor member 1
Place floor finish on top of 0. After the building unit 1 manufactured in this manner is transported to a construction site, it is placed on a foundation to construct a unit-type building.

As described above, according to the first embodiment, the joists 8A, 8
The intervals between the parallel arrangement of B are equal intervals (dimension P), and the arrangement position of the pipe 15 is the joist defect portion 9 in which the joists 8A and 8B are omitted,
Since the reinforcing floor member 11 whose upper surface is the same as or substantially the same as the upper surface of the floor member 10 and whose thickness is thicker than the floor member 10 is provided in the joist defect portion 9, the positions where the joists 8A and 8B are attached are Standardization facilitates the work of attaching the joists 8A and 8B regardless of the type, size, or attachment position of the pipe 15. In other words, the pipe 15 having a large diameter can be passed. In addition, in the first embodiment, since both sides of the reinforcing floor member 11 are supported by the joists 8A on both sides of the joist defect portion 9, only both sides of the reinforcing floor member 11 are nailed to the joists 8A. Thus, the reinforcing floor member 11 can be easily attached.

Further, since the joists 8A on both sides of the joist defect portion 9 are made of metal, the joists 8A have high strength.
Thus, the reinforcing floor member 11 can be reliably supported. Moreover, since the bracket 14 for supporting the reinforcing floor member 11 is provided on the joist 8A, the reinforcing floor member 11 can be reliably supported also from this point. Further, the reinforcing floor member 11 includes a first plate member 12 whose lower surfaces are supported by joists 8A on both sides of the joist defect portion 9, and a second plate member 13 which is joined to the lower surface of the first plate member 12. Since it is formed of a plurality of plate members, the rigidity of the reinforcing floor member 11 can be increased.
Further, since the underfloor piping structure is applied to the underfloor of the building unit 1 constituting the unit type building, the building unit 1 can be standardized regardless of the mounting position of the piping 15 and the building unit 1 can be efficiently manufactured.

Next, a second embodiment of the present invention will be described. The second embodiment is different from the first embodiment in the structure of the reinforcing floor member, and the other structures are the same as those in the first embodiment. FIG. 3 shows the underfloor piping structure of the second embodiment. In FIG. 3, the same components as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted. In FIG. 3, the reinforcing floor member 21 of the second embodiment is formed of one plate material, and this plate material is composed of particle board of thickness (D ₁ + D ₂ ). Notches 21A with which the joists 8A abut are formed at both ends of the reinforcing floor member 21. This notch 2
The thickness of 1A is D ₂ , and therefore the thickness of both ends of the reinforcing floor member 21 is D ₁ .

The method of constructing the underfloor piping structure of the second embodiment having this structure is the same as the method of constructing the underfloor piping structure of the first embodiment. Therefore, according to the second embodiment, in addition to the same effects as the effects of the first embodiment, the following effects can be achieved. That is, since the reinforcing floor member 21 is formed of one plate material, when forming the reinforcing floor member 21, it is not necessary to join a plurality of plate materials.

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 and second embodiments, the underfloor piping structure is applied to the underfloor of the building unit 1 that constitutes a unit-type building, but in the present invention, a building constructed by a conventional construction method, a panel construction method, or the like. Applicable to

Further, the reinforcing floor members 11 and 21 are configured such that both sides thereof are supported by the joists 8A on both sides of the joist defect portion 9, but in the present invention, the reinforcing floor members 11 and 21 are.
The width of 1 may be the same as the size between adjacent joists 8A, and the reinforcing floor members 11 and 21 may be supported only by the bracket 14. On the contrary, in the present invention, the bracket 14 may be removed and the reinforcing floor members 11 and 21 may be directly supported by the joists 8A.

Further, in the first and second embodiments, one joist is deleted to form the joist defect portion 9 having the width dimension 2P. However, in the present invention, two or more joists are lost. To form a joist defect portion having a width dimension of 3P or more. Further, the joists 8A on both sides of the joist defect portion 9 are made of metal, and the joists 8B other than the joists are made of wood, but all joists 8A, 8B are made of metal or wood,
Alternatively, the joist 8A may be made of wood and the joist 8B may be made of metal.

[0022]

As described above, according to the present invention, the joists are arranged at equal intervals, and the pipes are arranged at the joist defect portion where the joists are lost. Since a reinforcing floor member that is the same as or approximately the same as the upper surface of and is thicker than the floor member is provided, the joist mounting position is standardized and the joist mounting is performed regardless of the pipe type, size, or mounting position. Work becomes easy. Further, in the present invention, if both sides of the reinforcing floor member are supported by the joists on both sides of the joist defect portion, the reinforcing floor member can be easily attached. Furthermore, if the joists on both sides of the joist defect portion are made of metal, the joist can reliably support the reinforcing floor member. In addition, the reinforcing floor member is composed of a plurality of plate members including a first plate member whose both lower surfaces are supported by joists on both sides of the joist defect portion, and a second plate member joined to the lower surface of the first plate member. If formed, the rigidity of the reinforcing floor member can be increased. In addition, if the reinforcing floor member is formed of one plate material, the work of joining a plurality of plate materials becomes unnecessary. Furthermore, if the underfloor piping structure is applied under the floor of a building unit that constitutes a unit building, the building unit can be efficiently manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view showing a framework of a building unit to which a pipe underfloor structure according to a first embodiment of the present invention is applied.

FIG. 2 is a sectional view showing the pipe underfloor structure.

FIG. 3 is a view similar to FIG. 2 showing a pipe underfloor structure according to a second embodiment of the present invention.

[Explanation of symbols]

 1 Building unit 8A, 8B joists 9 Joists missing part 10 Floor member 11,21 Reinforcement floor member 12 First plate material 13 Second plate material 14 Bracket 15 Piping

Claims (6)

[Claims] 1. An underfloor piping structure in which a floor member is arranged on a plurality of joists arranged in parallel, and piping is arranged under the floor members, wherein the joists are arranged at equal intervals. The position where the pipe is placed is the joist defect part where the joist is missing,
The underfloor piping structure is characterized in that a reinforcing floor member having an upper surface that is the same or substantially the same as the upper surface of the floor member and a thickness that is thicker than the floor member is provided in the joist defect portion. 2. The underfloor piping structure according to claim 1,
An underfloor piping structure, wherein both sides of the reinforcing floor member are supported by joists on both sides of the joist defect portion. 3. The underfloor piping structure according to claim 1 or 2, wherein the joists on both sides of the joist defect portion are made of metal. 4. The underfloor piping structure according to any one of claims 1 to 3, wherein the reinforcing floor member is formed of one plate material. 5. The underfloor piping structure according to any one of claims 1 to 3, wherein the reinforcing floor member includes a first plate member whose bottom surfaces on both sides are supported by joists on both sides of the joist defect portion, An underfloor piping structure, characterized in that the underfloor piping structure is formed from a plurality of plate materials including a second plate material joined to a lower surface of the first plate material. 6. The underfloor piping structure according to any one of claims 1 to 5, wherein the underfloor piping structure is applied under a floor of a building unit constituting a unit-type building.