JPH07145651A - Roof construction in unit building and roof construction method - Google Patents

Abstract

PURPOSE:To eliminate an outside scaffolding, execute construction safely with high efficiency and to make it possible to cope with a steeply sloped roof. CONSTITUTION:Eaves roof panels 1 and general roof panels 1 are used. The eaves roof panels 1 make a slope gentler than that of the general roof panels 2. The eaves roof panels 1 have mounting frames 10 projected to an indoor side, and the eaves roof panels 1 are connected on a ceiling beam 8 of a unit box 6 with the mounting frames 10. The general roof panels 2 are installed on a roof truss 3 provided on the unit box 6 to connect the lower end to the eaves roof panels 1. The roof truss 3 is constituted of a plurality of strut trusses 4a, 4b, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof structure and a roof construction method in a unit building such as a house.

[0002]

2. Description of the Related Art Conventionally, as a roof structure of a unit house,
There are a structure using a roof unit and a structure in which a roof truss is installed on a unit box and a roof panel is placed on the roof truss for finishing.

[0003]

In the case of using the roof unit, the number of construction sites on site is small, but the roof unit is bulky, so that the transportation efficiency of the roof unit from the factory to the construction site is poor and the transportation cost is high. There is a problem. In addition, the rain work at the joint, which is the most troublesome roofing work, takes about the same time as the panel construction method. Therefore, generally, a structure using a roof truss and a roof panel is adopted. However, in that case, an external scaffold is required for the construction of the joint between the roof panels and the installation of the gutter at the eaves, which leads to an increase in cost. Also, in a small area, it may not be possible to construct an external scaffold, and roof construction was a dangerous work at high places. Especially in the case of a steep roof, it is difficult to secure safety and work efficiency deteriorates.

In the case of a unit house, the main body of the building is built quickly, but there are many on-site construction points on the roof, and there are various problems as described above. Therefore, the construction period, which is the greatest advantage of the unit construction method, can be shortened. Not fully achieved. In addition, various construction methods that do not require external scaffolding have been proposed for the construction of the main body of the unit housing, but even in that case, external scaffolding should be provided for eaves gutters, roof joints, etc. become. As such, external scaffolding is required for only a small amount of roofing work.

An object of the present invention is to provide a roof structure and a roof construction method in a unit building which can be safely and efficiently constructed without the need for an external scaffold and can cope with a steep roof.

[0006]

A roof structure in a unit building of the present invention uses an eaves roof panel and a general roof panel. The eaves roof panel has a mounting frame that projects to the indoor side, and is joined to the ceiling beam of the unit box with this mounting frame. The general part roof panel shall be installed on the shed assembly provided on the unit box, and the lower end shall follow the eaves roof panel. Also,
The eaves roof panel has a gentler slope than the general roof panel. The width of the eaves roof panel in the girder direction is preferably the width of the entire unit box.

The roof construction method of the present invention is the above-mentioned roof construction method and includes the following steps. That is, the upper floor unit box to which the eaves roof panel is joined in advance is hung on the lower floor unit box and joined to the lower floor unit box. After that, using the eave roof panel of the upper unit box as a scaffolding, the general roof panel is constructed.

[0008]

According to this roof structure, since the slope of the roof panel of the eaves is made gentle, the roof panel of the eaves can be used as a scaffold at the time of constructing the roof and at the time of constructing the roof panel joint. Further, since the eaves roof panel is divided from the general roof panel and is first attached when the roof is built, this also eliminates the need for an erection scaffold. The eaves roof panel is manufactured as a general part at the factory, and it is simply placed on the unit box at the site, so only the gutter and the joint between the roof panels are to be installed at the site, and workability is good. Furthermore, by preparing various slopes for the roof panels of the general part, it becomes possible to provide an attic without changing the eaves structure. In this case, the parts development is easy. Because of these, workability is improved, leading to cost reduction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows an example applied to a two-story unit house. In this roof structure, an eaves roof panel 1 having a gentle slope and a general roof panel 2 having a steep slope are used, and the roof 3 is composed of a plurality of bundle trusses 4a and 4b.

The building body 5 is constructed by mounting an upper floor unit box 6 on each of the lower floor unit boxes 7 arranged in parallel, and joining the respective unit boxes 6 and 7 with bolts or the like. Each of the unit boxes 6 and 7 may be made of steel or wood, but in this example, they are made of steel. That is, each of the unit boxes 6 and 7 has a frame structure of a ramen structure composed of four corner columns made of shaped steel, floor beams connecting the lower ends of the columns, and ceiling beams 8 connecting the upper ends of the columns. A surface material such as an outer wall material is stretched over this.

The eaves roof panel 1 is provided with an eaves roof frame 9 each made of shaped steel or the like, followed by a mounting frame 10 projecting to the indoor side, and the eaves roof frame 9 is provided with a roof plate, roofing, roofing material, etc. The roofing material 11 is stretched. The eaves roof panel 1 is a unit box 6 below it.
It is the size across the entire width of the column. The mounting frame 10 is composed of side frame members 10a, 10a extending from both ends of the eaves roof panel 1, a tip frame member 10b in which the ends thereof are joined, and an intermediate frame member 10c. 10a is joined to the ceiling beam 8 of the unit box 6 by a fastener 11 (FIG. 2) such as a bolt. Further, the eave roof 12 and the gutter 13 are attached to the eave roof panel 1 in advance. The slope of the eaves roof panel 1 is preferably in the range of 0 ° to 45 °, and optimally about 15 °.

The general part roof panel 2 is a large roof panel extending from the ridge part to the eaves part roof panel 1, and a plurality (for example, three) of unit panels 6 are arranged side by side. The general part roof panel 2 has a panel frame 2a and a roof material 14 similar to the roof material 11 of the eaves roof panel 1 stretched over the panel frame 2a.

The shed assembly 3 is composed of a plurality of bundle trusses 4a and 4b as shown in FIG. These bundle trusses 4a, 4
b is a joining plate 17 at the lower end of the bundle 15 and the diagonal member 16
It was joined with. The lower ends of the bundle trusses 4a and 4b are joined to the ceiling beams 8 of the unit box 6 by fasteners such as bolts, and the upper ends of the bundle members 15 and diagonal members 16 are bolted to the panel frame 2a of the general roof panel 2. And so on. The bundle trusses 4a and 4b are arranged on the end faces of the building body 5 and on the adjoining portions of the unit box 6 in the column direction. A roof truss (not shown) may be provided on the entire end face or the like instead of the bundle trusses 4a and 4b, but it is preferable to divide into the bundle trusses 4a and 4b in order to improve the transportation efficiency.

Next, a method of constructing the above configuration will be described. First, all eaves roof panels 1 are mounted on each unit box 6 on the upper floor. In this case, the eaves roof panel 1 is attached to the unit box 6 on the ground in advance, and the eaves roof panel 1 is attached to the unit box 6
As shown in Fig. 5, use the crane 20 to move the lower unit box 7
You can hang it up. By mounting the eaves roof panel 1 on the unit box 6 before hanging in this way, it is possible to mount it safely and efficiently at a low position.

After each roof panel 1 is installed in this way, each bundle truss 4a, 4b is installed on the unit box 6. After that, the eaves roof panel 1 is used as a scaffold, and the general roof panel 2 is sequentially installed. Next, waterproofing is applied to the joints between the roof panels 1 and 2 in the vertical direction and the horizontal direction, and the portions of the roofing materials 11 and 14 to be left unfinished are finished. Further, on the eaves roof panel 1, the joining work of the joint portion of the gutter 12 and the joining work with a vertical gutter (not shown) are performed.

According to this roof structure, since the eaves roof panel 1 has a gentle slope in this manner, the eaves roof is constructed when the general roof panel 2 is constructed or when the roof joint is constructed. The panel 1 can be used as a scaffold. Further, the gutter 12 can be attached to the eaves roof panel 1 in advance, and the joint can be installed on the eaves roof panel 1. Therefore, a scaffold for erection is not required for roof construction. Therefore, by adopting a structure that does not require an external scaffold for the construction of the building body 5, it is possible to perform all on-site construction of the building without constructing an external scaffold at all.

Since the eaves roof panel 1 is manufactured as a general part in the factory and is simply placed on the unit box 6 on site, only the joint between the gutter 12 and the roof panels 1, 1 should be installed on site. And the workability is good. Further, various kinds of slopes of the general part roof panel 2 can be prepared without changing the eaves structure. Therefore, as shown in FIG. 3, it is possible to provide the roof part 21 of the general part with a steep slope and to provide the attic 21, so that the parts can be easily deployed. Because of these, workability is improved,
It leads to cost reduction.

[0018]

The roof structure in the unit building of the present invention has an eaves roof panel joined to the ceiling beam of the unit box by the attachment frame, which has an attachment frame projecting to the indoor side, and the unit box. Since it is equipped with a roof structure provided on the roof structure and a general part roof panel which is provided on the roof structure and has a lower end continuing to the eaves roof panel, it does not require an external scaffold and can be safely and efficiently used. It can be installed and can handle steep roofs. Further, when the width of the eaves roof panel in the girder direction is the width of the entire unit box, it is not necessary to join the eaves roof panel in the middle of the unit box, and the workability is further improved. Further, if the eaves roof panel is within the width of the unit box, even if the eaves roof panel is joined in advance, there is no problem in suspending the unit box.

Further, in the roof construction method of the present invention, when constructing the roof structure, the eaves roof panel is previously joined to the upper floor unit box and is hung on the lower floor unit box. Since the eaves roof panel is used as a scaffold to construct the general roof panel, the roof structure can be effectively used to improve the construction efficiency and safety.

[Brief description of drawings]

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

FIG. 2 is a front view of a process of constructing the roof portion.

FIG. 3 is a partially cutaway front view showing a roof portion when an attic is provided.

FIG. 4 is a front view of each bundle truss.

FIG. 5 is an explanatory diagram of a roof building process.

[Explanation of symbols]

1 ... Eaves roof panel, 2 ... General roof panel, 3 ... House assembly, 4a, 4b ... Bundle truss, 5 ... Building body, 6, 7 ... Unit box, 8 ... Ceiling beam, 10 ... Mounting frame, 1
2 ... gutter, 13 ... eave ceiling

Claims (3)

[Claims] 1. A mounting frame that projects indoors,
An eaves roof panel joined to the ceiling beam of the unit box by the mounting frame, a shed assembly provided on the unit box, and a lower end provided on the shed assembly and connected to the eaves roof panel in general. A roof structure in a unit building including a room root panel, and the eaves roof panel having a gentler slope than the general roof panel. 2. The roof structure in a unit building according to claim 1, wherein the width of the eaves roof panel in the girder direction is the width over the entire width of the unit box. 3. The method for constructing a roof structure in a unit building according to claim 1, wherein the upper floor unit box to which the eaves roof panels are joined in advance is hung on the lower floor unit box and joined to the lower floor unit box. The process of doing
A roof construction method in a unit building, including a process of constructing a general roof panel by using the eaves roof panel of the joined upper floor unit box as a scaffold.