JPH07180252A - Roof structure using setback unit - Google Patents

Abstract

PURPOSE:To reduce the number of parts for constitution and save manpower for a fitting work. CONSTITUTION:A roof structure 1 is formed to include a setback unit 10 having exterior wall surface 11 set back internally from a lower floor building unit 2 laid on the lower floor of a unit type building, and a roof panel 20 mounted on the projected sections 13 of two floor beams 12A externally projected from the exterior wall surface 11 of the unit 10. Also, the forward end of the roof panel 20 is projected externally from the exterior wall surface of the unit 2. According to this construction, the roof panel 20 can use a portion externally projected from the external wall surface of the unit 10 as eaves and, therefore, the conventional type of eaves is not needed, thereby reducing the number of parts and allowing an easy fitting work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof structure using a setback unit, which can be used for buildings such as houses.

[0002]

2. Description of the Related Art Conventionally, a unit-type building in which work on a construction site can be completed in a short time is constructed by assembling building units that have been manufactured in advance in a factory or the like on a construction site. In such a unit type building, various types of building units are prepared according to the height and shape of the building. For example, in the case of dealing with a slash restriction that must be provided inside the predetermined sloping line due to a problem such as the right of sunlight, as shown in FIG. A setback unit 32 having an outer wall surface 31 that is more retracted toward the indoor side is adopted. The setback unit 32 includes two floor beams 33 protruding outward from the outer wall surface 31 and two floor beams 34 connecting end portions of the floor beams 33.
And a plurality of joists 35 spanned between the two floor beams 34.
It has a floor structure 36 including and. According to such a setback unit 32, as shown in FIG.
Since the roof part 38 at the uppermost part of the building retreats toward the indoor side, the entire building 37 can be housed inside the defined diagonal line A. Also,
The setback unit 32 includes an intermediate beam 40 that interconnects the intermediate portions of columns 39 provided on the outer wall surface 31 side and a plurality of climbing beams that interconnect the intermediate beam 40 and the floor beam 34 on the outdoor side. 41 and are provided. A roof surface material 42 is attached to the plurality of climbing beams 41. On the other hand, an eaves unit 44 having a roof surface continuous with the roof surface member 42 of the setback unit 32 is attached to the upper end of the outer wall surface 43 of the building unit 30 on the lower floor. These roof panel 42 and eaves unit 44 allow the lower floor of the building unit 30
A roof 46 is formed to cover 45.

[0003]

However, since the roof 46 using the conventional setback unit 32 requires the eaves unit 44, the number of parts constituting the roof 46 is increased and the eaves unit 44 is raised vertically. Since it is attached to the outer wall surface 43, there is a problem that it takes time and effort to attach it, for example, it is necessary to surely perform waterproof treatment.

It is an object of the present invention to provide a roof structure using a setback unit which has a small number of parts and which does not require any mounting.

[0005]

According to the present invention, there is provided a setback unit having an outer wall surface which is retracted toward the room side from a building unit arranged on the lower floor of a unit type building, and the set wall unit having the outer wall surface. A roof panel attached to a projecting portion of two floor beams projecting to the outside, and a leading edge of the roof panel projecting outward from an outer wall surface of the building unit on the lower floor. And

In the above, in the setback unit, the temporary beams to be detached at the construction site can be connected to the tips of the projecting portions of the two floor beams, and the set beams are transported with the temporary beams attached. Preferably. Further, it is preferable that the roof panel is fixed by a bracket attached to a ceiling beam of the building unit on the lower floor.

[0007]

According to the present invention as described above, the setback unit and the roof panel are manufactured in advance in a factory, the setback unit is attached to the building at the construction site, and then the roof panel is attached to the protruding portion of the setback unit. ,
Form a roof with a setback unit. With such a roof structure, the tip edge of the roof panel projects outward from the outer wall surface of the building unit on the lower floor to serve as the eaves of the lower floor of the lower floor, eliminating the need for a conventional eaves unit. Thus, the above object is achieved. Since the roof panel is manufactured and transported separately from the setback unit, there are no restrictions on dimensions, etc., compared to the conventional case where the roof panel is manufactured integrally with the setback unit. It is possible to form eaves with dimensions. Furthermore, by omitting the floor beams that connect the ends of the two floor beams protruding from the outer wall surface of the setback unit and connecting the ends with temporary beams during transportation, there will be no problem in strength during transportation. If the temporary beam is removed at the construction site, the roof panel can be attached to the ceiling beam of the building unit on the lower floor via a bracket or the like. As a result, the roof surface of the roof panel attached to the setback unit can be aligned with both the height level and the inclination angle with the roof surface of the roof panel attached to the ceiling beam of a normal building unit, and there is no step or the like. Since a continuous roof surface is formed, it does not spoil the exterior of the unit type building,
Does not cause any design problems.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a roof structure 1 according to this embodiment. The roof structure 1 is a lower-floor building unit 2
Setback unit 10 placed on the top of the setback unit and two floor short-side beams protruding from the outer wall surface 11 of the setback unit 10
The roof panel 20 is attached to the protruding portion 13 of 12A. In the lower-floor building unit 2, the lower ends of the pillars 3 at the four corners are connected by floor short side beams and floor long side beams (not shown), and the upper ends of the columns 3 are connected by ceiling short side beams 4A and ceiling long side beams 4B. It has a box-shaped framework formed by.

The setback unit 10 is the same as the setback unit 10.
14A which is erected in the corner of the floor and the pillar 14B which is erected in the middle part of the floor short side beam 12A. The lower ends of the columns 14A and 14B are the floor short side beam 12A and the floor long side. Beam 12B and intermediate floor beam
It is connected by 12C, and is provided with a substantially box-shaped frame in which the upper ends of the pillars 14A, 14B are connected by a short ceiling beam 12D and a long ceiling beam 12E. From the setback unit 10,
The floor long-side beam that interconnects the end portions of the short-side floor beam 12A on the side of the protrusion 13 is omitted. The floor portion of the setback unit 10 is provided with a plurality of joists 15 that are bridged between the floor long-side beam 12B and the intermediate floor beam 12C in order to attach a floor material (not shown). In the ceiling part, a plurality of small beams 16 are provided so as to attach a ceiling material (not shown) to the ceiling long side beams 12E.

An outer wall material 17 for corners arranged at a corner of the setback unit 10 is provided at an intermediate portion between the two side surfaces of the pillar 14B.
The mounting brackets 14C and 14D for A are fixed. The outer corner wall material 17A is a member having an L-shaped horizontal cross section made of lightweight cellular concrete or the like, and its lower end is fixed to the pillar 14B by the brackets 14C and 14D. Pillar 14
An intermediate beam 18 connecting the pillars 14B to each other is joined to the middle portion of the height direction of B, and a plurality of receiving brackets for attaching the outer wall material 17B to the outer wall surface 11 is attached to the side surface of the intermediate beam 18. 18A is stuck. The receiving bracket 18A has a crank-shaped cross section having a stepped portion in the middle portion, and is fixed by protruding the lower portion of the crank-shaped portion to the outside of the room. The stepped part of the receiving bracket 18A is the outer wall material.
It is a receiving part that receives the bottom of the 17B, and is also a connecting part for a draining member that drains the rainwater that runs down to the outside. The outer wall material 17B, like the corner outer wall material 17A, is a face material made of lightweight cellular concrete or the like. The lower end of the outer wall member 17B is fixed to the intermediate beam 18 by the above-mentioned receiving bracket 18A, and the upper end is fixed to the ceiling long side 12E above the intermediate beam 18 by the bracket 18B (only shown in FIG. 2).
It is fixed to.

The roof panel 20 has a plurality of rafters 22 arranged on the back side of a roof panel 21. Setback unit 10
Between the floor short side beams 12A and the protrusions 13 of the two floor panels.
20 can be attached. Such a roof panel 20 is fixed at its upper end side by a plurality of brackets 18C provided on the lower surface of the intermediate beam 18, and at its lower end side the tip of the floor short-side beam 12A and the ceiling length of the lower floor building unit 2 on the outdoor side. It is fixed by a bracket 19 provided on the side beam 4B. The bracket 18C is provided with a planar receiving portion 18E at the lower end of an extending portion 18D extending downward from the intermediate beam 18.
The receiving portion 18E has a planar shape that is inclined according to the inclination of the roof, and has an insertion hole through which a bolt that is screwed with the roof panel 20 is inserted. Of these brackets 18C, the middle beam
Located in the middle of 18 are two roof panels 20
In order to support the above, the through holes are provided at two places. The bracket 19 is a member having a substantially U-shaped cross section having an upper surface inclined according to the roof inclination. On the top surface of the bracket 19,
An insertion hole for inserting a bolt that is screwed into the roof panel 20,
Positioning pins that are inserted through the roof panel 20 are provided. The bracket 19 fixed to the ceiling long-side beam 4B has two insertion holes and two sets of positioning pins for supporting the two roof panels 20.

Next to the lower floor building unit 2, a lower floor building unit 5 similar to the lower floor building unit 2 is arranged. On the ceiling long-side beam 4B of this lower-floor building unit 5,
The same bracket 19 as the lower floor building unit 2 side is fixed. Regular roof panel 23 through this bracket 19
Are attached, and thereby a normal roof structure 6 is formed. The roof structure 1 with the setback unit 10 and the normal roof structure 6 have their respective roof panels 20 and 23 fixed by the same bracket 19 fixed at the same height level so that both roof surfaces are continuous with each other. Has become.

In this embodiment, the setback unit 10, the lower floor building unit 2 and the roof panel 20 are previously prepared.
Etc. are manufactured in a factory, and the completed setback unit 10 etc. is transported to a construction site by a truck or the like. Here, as shown in FIG. 3A, the setback unit 10 is transported in a state in which the front end portion of the floor short side beam 12A on the side of the protrusion 13 is connected by the temporary beam 12F. At the construction site, the lower floor building unit 2
3B, the setback unit 10 with the temporary beams 12F removed is placed on the lower-floor building unit 2 as shown in FIG. 3B, and the setback unit 10 and the lower-floor building unit are attached. 2 and then, as shown in FIG. 3C, the roof panel 20 is attached to the setback unit 10
It is attached to the protruding portion 13 of the floor short-side beam 12A, and the roof structure 1 by the setback unit 10 is completed.

According to this embodiment as described above, the following effects can be obtained. That is, the tip edge of the roof panel 20 is projected outward from the outer wall surface of the lower-floor building unit 2 so that the tip edge of the roof panel 20 serves as the eaves of the lower floor. Therefore, the number of parts of the roof structure 1 can be reduced, and the roof panel 20 can be mounted without any trouble.

Also, the floor short side beam of the setback unit 10
An intermediate floor beam 12C is installed in the middle part of 12A, and this intermediate floor beam 12C
Since a joist 15 was laid between C and the floor long side beam 12B,
The length of the joists 15 is shortened, and the material of the setback unit 10 can be reduced.

Further, the outer wall surface of the setback unit 10
The floor long-side beam that connects the ends of the two floor short-side beams 12A protruding from 11 to each other is omitted, and the same bracket 19 is provided in both the roof structure 1 by the setback unit 10 and the normal roof structure 6. Since they can be fixed at the same height level, the roof surfaces of the respective roof panels 20 and 23 are continuous with each other, and the unit-type building can have a good appearance.

Further, in transporting the setback unit 10, since the tips of the two floor short side beams 12A protruding from the outer wall surface 11 are connected by the temporary beams 12F, the strength during transportation is secured, Setback unit by transportation
It is possible to prevent 10 from being damaged.

Further, since the roof panel 20 is manufactured and transported separately from the setback unit, the size and the like are limited as compared with the conventional case where the roof panel 20 is manufactured integrally with the setback unit. Since there is no edge, it is possible to form an eaves tip with a size and shape according to need.

Although the present invention has been described with reference to the preferred embodiment, the present invention is not limited to this embodiment, and various improvements and design changes can be made without departing from the gist of the present invention. It is possible. For example, the bracket that fixes the upper end side of the roof panel is not limited to the bracket 18C having the extension 18D extending downward from the intermediate beam 18, but the roof panel is fixed to the upper end of the rising portion that rises upward from the intermediate floor beam 12C. It may be provided with a receiving portion. Further, the bracket for fixing the lower end side of the roof panel is not limited to the bracket 19 having a substantially U-shaped cross section, and a receiving surface member inclined according to the roof inclination may be attached to the upper end of the pipe. In short, the shape of the bracket for fixing the upper end side and the lower end side of the roof panel can be appropriately selected upon implementation.

Further, as the setback unit,
The floor short side beam is not limited to the one projecting from the outer wall surface, and the floor long side beam may be projecting from the outer wall surface.

[0021]

As described above, according to the present invention, by omitting the eaves tip unit, it is possible to reduce the number of parts to be constructed, and it is possible to eliminate the trouble of mounting.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire embodiment of the present invention.

FIG. 2 is a vertical sectional view of the embodiment.

FIG. 3 is a schematic diagram illustrating an assembly procedure of the embodiment.

FIG. 4 is a perspective view of a setback unit used in a conventional example.

FIG. 5 is a vertical sectional view of the conventional example.

[Explanation of symbols]

 2 Lower floor building unit located on the lower floor 10 Setback unit 11 Outer wall surface 12A Floor short side beam protruding from outer wall 12F Temporary beam 19 Bracket 20 Roof panel

Claims (3)

[Claims] 1. A setback unit having an outer wall surface that is recessed toward the inside of a building unit arranged on the lower floor of a unit-type building, and two floors protruding outward from the outer wall surface of the setback unit. A roof structure with a setback unit, comprising a roof panel attached to a projecting portion of a beam, and a leading edge of the roof panel projecting outward from an outer wall surface of the building unit on the lower floor. . 2. The roof structure using the setback unit according to claim 1, wherein the projections of the two floor beams can be connected to a temporary beam to be removed at a construction site. Roof structure with a characteristic setback unit. 3. The roof structure using the setback unit according to claim 1 or 2, wherein a bracket for fixing the roof panel is attached to a ceiling beam of the building unit on the lower floor. Roof structure with setback unit.