KR101754188B1 - Assemblable roof connector, roof system and roof construction method thereby - Google Patents

Abstract

The present invention relates to a prefabricated roof and a roof system using the prefabricated roof connecting structure, which is capable of simpler construction and cost reduction and has an earthquake-proof property, and is mounted on and fixed to the installation groove of the base panel Can be connected to the wall; A post that is coupled upright to the connecting seat upper surface; And an angle attachment hole connected to an upper end of the post and having four cross-shaped support pieces and a cross groove formed from the upper surface of the support piece.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roof structure, a roof system,

The present invention relates to a prefabricated roof, a connecting structure for a prefabricated roof having an earthquake-proof property, which is capable of simpler construction and cost reduction, and a roof system and roof construction method using the same.

In recent years, the construction period has been drastically shortened by constructing the building with an assembled structure when constructing the building. One of the buildings is built on pillars on the foundation, the beam is installed and the roof is under construction.

The shortening of construction period in building construction is important because it is directly related to cost reduction.

The roof of the building is also being developed as an assembly structure so that construction can be done quickly, and it is actually applied.

On the other hand, Korea is also experiencing more frequent occurrence of earthquakes with high intensity, which can no longer be regarded as a safe zone for earthquakes.

Therefore, in the long term, the buildings to be constructed in the future should be constructed by seismic design, and the roof should be included in the object of seismic design. Especially, since the roof of the assembly method is widely spreading, it is necessary to develop a prefabricated roof that can withstand the earthquake to protect the life and property of the people.

A roof panel system of a building and a construction method thereof are disclosed in Korean Patent No. 10-1222648, which is related to the present invention, and FIG. 1 shows a coupling relationship of a metal panel roof system according to the prior art.

A base panel 10 made of a metal and provided on the upper part of the supporting bar 1 and having a stepped portion 12 protruding downward at a predetermined distance from each other as shown in the figure, A plurality of guide rails 20 which are provided on the step portion 12 of the base panel 3 so as to be fixedly engaged with the step portions 12 of the base panel 3, A body 42 on which at least one through hole 43 is formed and an insertion groove 44 formed at an upper portion of the body in a direction perpendicular to the guide groove 22, A level clip 40 coupled to the plate 30 and movable a predetermined distance along the guide groove 22, an insertion end 52 in which a fastening hole 53 is formed, And the insertion end 52 is inserted into the guide groove 22 of each level clip 40, A fixing bar 50 whose vertical fixing height is adjusted by fastening means passing through the hole 53 and the through hole 43, a heat insulating material 3 which is filled in a space between the fixing bars 50, And a finishing panel 7 made of a metal material for sealing the upper portion.

In the prior art, a long guide rail 20 is fixed to a step 12 formed on a base panel 10, a moving plate 30 is inserted into a guide groove 22, a level clip 40 is mounted on a moving plate 30 so that the level clip can be moved more easily, thereby facilitating the construction.

In the prior art, a long guide rail 20 should be installed at the stepped portion of the base panel. The guide rail 20 has a problem of high cost because it uses an aluminum profile. There was a problem that it fell.

In addition, since the conventional prefabricated roof including the conventional technology is installed in a right angle direction, there is a problem in that it is difficult to install the heat insulation and the finishing panel at an inclined angle when the atypical roof is to be realized.

Korean Patent No. 10-1222648

Accordingly, it is an object of the present invention to provide a connecting body for a building-ready roof and a roof system using the same, which can be constructed with a simpler construction, and can be provided with an earthquake-proof property to enhance the safety of the building.

The present invention also provides a roof assembly for a prefabricated roof which can provide convenience in constructing an atypical roof, and a roof system using the same.

In addition, the present invention proposes a roof construction method that can more effectively perform roof construction using a composite roof joint.

According to an aspect of the present invention, there is provided a jointed roof assembly for a roof, comprising: a connecting seat capable of being seated and fixed to an installation groove of a base panel; A post that is coupled upright to the connecting seat upper surface; And an angle attachment hole connected to an upper end of the post and having four cross-shaped support pieces and a cross groove formed from the upper surface of the support piece.

Preferably, the support piece is formed with a connection hole capable of fixedly connecting an angle inserted through the cross-shaped groove.

Preferably, the post is an elastic body.

Preferably, the elastic body is a coil spring, and an elastic bar is embedded in the center of the coil spring.

Preferably, the angle attachment means includes a bracket detachably attached to a lower end of the bracket, a fitting hole through which the upper end of the post can be fitted is formed on a lower surface of the bracket, a threaded portion protruding from the upper surface of the bracket is provided, And a fastening member to be fastened to the screw portion is formed on a lower surface of the housing.

Preferably, a heat insulating plate is provided between the angle mount and the bracket, and a through hole through which the screw is passed is formed at the center of the heat insulating plate so as to be stacked.

According to another aspect of the present invention, there is provided a roof system comprising: a base panel that is supported by a lower angle and has a mounting groove formed at a distance; A connecting rod which is coupled to the mounting groove at a distance from the mounting groove and which is seated and fixed to the mounting groove; a post which is coupled to the upper surface of the connecting rod in a standing upright manner; A connecting member for a prefabricated roof including an angle attachment portion provided with four supporting pieces and formed with a cross groove from an upper surface of the supporting piece; A first upper angle which is fitted and fixed in any one of the cross grooves formed in the angle attachment; A second upper angle which is fitted and fixed in the other direction of the cross groove; A roof panel having unit panels connected to each other, wherein the roof panel is fixedly connected to the upper surface of the first upper angle; And a heat insulating material installed in a space formed between the base panel and the roof panel.

According to another aspect of the present invention, there is provided a roof construction method using a roof assembly for a building, comprising: a base panel mounting step for fixing and mounting a base panel having installation grooves formed at equal intervals on a lower angle; A connecting member for a roof assembly for a building including a connecting seat, a post, and an angle mounting means is prepared and the connecting seat is fixed to a part of the mounting groove; A first upper angle attaching step of securing the first upper angle along one direction among the cross grooves formed in the angle mount; A second upper angle attaching step of securing the second upper angle at right angles to the first upper angle in the other direction among the cross grooves; Inserting a heat insulating material in a lattice space formed by the first upper angle and the second upper angle; And a roof panel mounting step of fixing the roof panel to the first upper angle so as to cover the heat insulating material.

Preferably, the assembling roof connecting member mounting step includes a step of separating the connecting seat constituting the connecting body for the roof, then fixing the connecting seat to a part of the mounting groove by using a fastening piece, The post is coupled to the seat, and the angle attachment is connected to the upper end of the post.

Preferably, the waterproof sheet is installed on the heat insulating material after the heat insulating material mounting step, and then the roof panel is installed.

The assembled roof connector and the roof system using the same according to the present invention can provide the assembled roof connector as a single part, thereby making it possible to make the construction more convenient and quick.

According to the present invention, since the assembled roof connecting body is connected to the appropriate portion of the base panel, the other components for the roof system can be assembled, thereby improving the working efficiency.

Further, since the assembled roof connector of the present invention has an earthquake-proof property, it also has an effect of enhancing the earthquake-proof strength of the building.

Further, when the roof is irregular, the angle of the angle-mounted sphere can be changed, thereby improving the degree of freedom in the construction.

In addition, the present invention has the effect of reducing the roof construction cost by reducing the number of components and improving the workability as compared with the prior art.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a conventional metal panel roof system. FIG.
FIG. 2 is a perspective view of a connecting body for a prefabricated roof according to a preferred embodiment of the present invention; FIG.
Fig. 3 is an exploded perspective view of Fig. 2; Fig.
4 is a perspective view of a roof system constructed using a prefabricated roof joint;
5 is an exploded perspective view of Fig.
6 is a perspective view of a state in which the roof panel is removed;
Fig. 7 is an exemplary view of a case where the roof panel is inclinedly installed by adjusting the angle of the angle attachment. Fig.
8 is a process diagram of a roof construction method using the assembled roof connecting body according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in more detail with reference to the accompanying drawings, in which: FIG. It should be understood, however, that the drawings and detailed description thereof illustrate one feasible example according to the technical idea of the present invention, and the technical scope of protection of the present invention is not limited thereto.

FIG. 2 is a perspective view of the assembled roof connecting body according to a preferred embodiment of the present invention, FIG. 3 is an exploded perspective view of FIG. 2, and FIG. 4 is a perspective view of a roof system constructed using the connecting roof connecting body. FIG. 5 is an exploded perspective view of FIG. 4, FIG. 6 is a perspective view of a state in which a roof panel is removed, and FIG. 7 is an example of a roof panel being inclined in an angle adjustment of an angle- 8 is a process diagram of a roof construction method using the assembled roof connecting body according to the present invention.

As shown in FIG. 4, the assembled roof connecting body according to the present invention can be utilized in the construction of the prefabricated roof system. As will be described later, the roof system is roughly assembled with the base panel 200 on the lower angle 90 The assembled roof connecting body 100 is fixed to the mounting groove 210 of the base panel 200. The first upper angle 300 and the second upper angle 400 are intersected with each other at the angle mount 130 constituting the assembled roof connecting body 100 and the roof panel 500 is coupled to the first upper angle 300 And a heat insulating material 600 is installed in a space between the base panel 200 and the roof panel 500.

The assembled roof connecting body 100 according to the present invention is necessary for realizing such a prefabricated roof system and includes a connecting base 110, a post 120, and an angle mount 130.

Since the prefabricated roof joint 100 of the present invention can be provided in the same shape as a single part, the operator can take advantage of the fact that a plurality of prefabricated roof assemblies 100 can be easily carried around and installed at appropriate positions do.

More specifically, the assembled roof joint 100 of the present invention will be described.

The connecting cradle 110 is fixedly connected to the mounting groove 210 formed in the base panel 200 as a lowermost portion of the assembled roof connecting member 100.

In this embodiment, the connection cradle 110 includes a locking plate 111 on a circular plate and a cone-shaped seating cone 112 protruding downward from the lower center of the locking plate 111, And a hollow post connection hole 113 is formed at the center.

The seating cone 112 is fitted into the mounting groove 210 of the base panel 200 and the latching plate 111 is brought into contact with the upper surface of the base panel 200 and stably seated. The fastening pieces 114 are inserted through the post connection holes 113 to fasten the fastening pieces 114 to the base panel 200 so that the fastening pieces 110 are fastened to the fastening holes 210.

The post connection holes 113 formed on the upper surface of the latching plate 111 can be connected to each other by sandwiching the lower end of the posts 120. Various modifications can be made depending on the shape and size of the posts 120. [

As will be described later, since the coil spring is utilized as the post 120 in the present embodiment, the coil spring can be rotated and coupled to the post connection hole 113 like a female screw.

The post 120 coupled through the post connection hole 113 formed in the connection block 110 is installed upright and has a predetermined length.

The post 120 may be the same as the elongated rod, in which the post 120 is an elastic body, and more particularly, the elastic body uses the coil spring 120 in the preferred embodiment. The coil spring 120 is made of a metal material, and a coil spring 120 using a material having an appropriate thickness is used in consideration of weight and the like.

More preferably, when the coil spring is used as the post 120, the elastic bar 121 may be embedded in the center of the coil spring. The elastic bar 121 is the same as a cylindrical or hollow column having elasticity, and functions as a complement to the coil spring 120.

The use of an elastic body such as a coil spring as the post 120 in the present invention has the purpose of enhancing the earthquake-proof property in the event of an earthquake. The impact can be alleviated by the coil spring 120 and the elastic bar 121 when the building is shaken due to an impact caused by an earthquake.

The angle attachment hole 130 is coupled to the upper end of the post 120. The angle attachment hole 130 is formed by four support pieces 131 forming a cross, A groove 132 is formed.

A connecting hole 133 is formed in each of the supporting pieces 131 so as to fix an angle to be inserted through the cross groove 132. Preferably, the connection hole 133 has a long elongated shape or a plurality of connection holes are formed. In the present embodiment, each support piece 131 is formed with a long hole so that the operation can be smoothly performed when the angle is assembled.

The angle attachment part 130 connected to the upper end of the post 120 may be connected via a bracket 140. A bracket 140 is detachably attached to the lower end of the angle attachment hole 130. A fitting hole 141 is formed in the lower surface of the bracket 140. An upper end of the post 120 is inserted into the fitting hole 141, . A threaded portion 142 protruding from the upper surface of the bracket 140 is formed so that the angle fitting hole 130 can be coupled using the threaded portion 142. And a fastener 134 is provided on the lower surface of the angle mount 130 so that the screw 142 can be engaged.

More preferably, the bracket 140 is formed with a fitting hole 141 protruding from the bottom surface of the bracket 140 so as to fit the upper end of the post 120, as shown in FIG. 2 or FIG. 3. In order to prevent breakage of the fitting hole 141 A plurality of connecting pieces 143 are formed to connect the outer surface of the fitting member 141 to the lower surface of the bracket 140.

A plate-shaped heat insulating plate 150 may be disposed between the angle attachment member 130 and the bracket 140. A through hole 151 may be formed at the center of the heat insulating plate 150, And the insulation plate 150 is fixed when the angle fixture 130 and the bracket 140 are fastened.

The heat insulating plate 150 is made of a material having a heat insulating property and by providing the heat insulating plate 150, it is possible to minimize the heat input / output through the assembly type roof connecting body 100, have.

Next, the roof system using the above-described assembled roof connecting body will be described.

The roof system of the present invention includes the base panel 200, the assembled roof connecting body 100, the first upper angle 300, the second upper angle 400, the roof panel 500, and the heat insulating material 600 ). ≪ / RTI >

The base panel 200 is fixedly installed to be supported by the lower angle 90. The base panel 200 is formed with installation grooves 210 with a predetermined spacing at equal intervals.

The assembled roof connecting body 100 is mounted in a part of the installation groove 210 of the base panel 200. Depending on the size of the roof, the base panel 200 has a comparable width and length, and the prefabricated roof joint 100 is partially mounted in place.

For example, the mounting grooves 210 formed in the base panel 200 may be referred to as a first mounting groove, a second mounting groove, a third mounting groove, and an Nth mounting groove from one side. A plurality of prefabricated roof assemblies may be fixedly installed at a predetermined distance along the second installation grooves, and then a prefabricated roof assemblies may be installed along the sixth installation grooves.

The assembled roof connecting body 100 mounted to the mounting groove 210 of the base panel 200 includes the connecting leg 110, the post 120 and the angle mounting hole 130, and the connecting leg 110 Are fixed to the base panel 200 by using the fastening pieces 114.

A post 120 is coupled upright on the upper surface of the connecting rod 110 and an angle mount 130 is connected to the upper end of the post 120.
Particularly, a detachable bracket 140 is coupled to the lower end of the angle attachment hole 130. A fitting hole 141 is formed in the lower surface of the bracket 140 so that the upper end of the post 120 is inserted into the fitting hole 141 So that they can be combined. A threaded portion 142 is provided on the upper surface of the bracket 140 and is connected to a fastener 134 formed on the bottom surface of the angle attachment hole 130 using a screw portion 142.
The heat insulating plate 150 may be placed on the upper surface of the bracket 140 and the through hole 151 may be formed at the center of the heat insulating plate 150 so that the threaded portion 142 is fitted into the through hole 151, So that the heat insulating plate 150 can be installed.

In particular, the angle attachment hole 130 has a cross groove 132 formed through four support pieces 131 forming a cross. A more detailed structure of the prefabricated roof joint 100 may be applied to the present roof system with reference to the description of the prefabricated roof joint described above.

The first upper angle 300 and the second upper angle 400 are provided using the cross groove 132 formed in the angle attachment hole 130. [

The first upper angle 300 may be fixedly installed in one of the cross grooves 132 and the second upper angle 400 may be fixedly installed in the other direction among the cross grooves 132. [

The first upper angle 300 and the second upper angle 400 that are fitted in the cross groove 132 can be fixedly connected to the angle mount 130 using a means such as a bolt b. The first upper angle 300 and the second upper angle 400 are fitted into the respective cross grooves 132 and the connection holes 133 are formed in the support pieces 131 of the angle attachment holes 130, (B) is inserted into the bolt 133 to be fastened. It is preferable that bolt holes are formed in the first and second upper angles 300 and 400 in advance so that bolts (b) can be fastened in the cross groove (132).

When the 1.2th upper angles 300 and 400 are fastened to the cross grooves 132 of the angle mount 130, the 1.2nd upper angles 300 and 400 form a lattice.

When the installation of the first and second upper angles 300 and 400 is completed, the roof panel 500 is installed thereon. The roof panel 500 may have a variety of shapes and structures. In this embodiment, the roof panel 500 uses the unit panels connected to each other to form a large area. The roof panel 500 may be fixedly connected to the lower first upper angle 300.

Meanwhile, the space formed between the base panel 200 and the roof panel 500 is provided with a heat insulating material 600, and the heat insulating material 600 may be a common styrofoam.

More preferably, the waterproof sheet 700 can be further installed on the lower surface of the roof panel 500 and the waterproof sheet 700 can be installed to prevent water leakage which may occur.

On the other hand, the roof system of the present invention can also be usefully used when constructing a somewhat irregular roof as shown in Fig. That is, when the roof panel 500 is to be inclined, by fixing the angle-attaching tool 130 of the assembled roof connector 100 at a desired angle and fixing the 1.2 upper angles 300 and 400 to the cross groove 132, (500) can be inclined.

FIG. 7A shows a case of performing a regular roof panel construction, and FIG. 7B shows a case in which the angle attachment holes are rotated 45 degrees so that the 1.2nd upper angles 300 and 400 are connected to the cross groove 132 Show.

As described above, by using the assembled roof connecting member of the present invention, the roof panel can be freely installed at a desired angle.

Also, the roof system of the present invention has an advantage that the post 120 of the assembled roof connector 100 can use an elastic body such as a coil spring, thereby securing the earthquake-proof characteristic when an earthquake occurs.

Next, another embodiment of the present invention will be described with respect to a roof construction method using the assembled roof connecting body.

This construction method includes a base panel mounting step (S100), a joining roof connecting assembly mounting step (S200), a first upper angle mounting step (S300), a second upper angle mounting step (S400), a heat insulating member mounting step (S500) And a roof panel mounting step (S600).

The base panel mounting step S100 is to fix the base panel 200 on the lower angle 90. The base panel 200 has a large plate shape and a continuous installation groove 210 .

After the installation of the base panel 200 is completed, a step S200 for assembling a roof assembly is carried out.

The assembled roof connecting body 100 includes a connecting base 110, a post 120 and an angle mounting hole 130. The connecting base 110 is connected to a part of the mounting grooves 210 formed in the base panel 200 So that the platform 110 is fixedly connected.

As shown in the drawing, the assembled roof connecting body 100 is installed in a part of the mounting grooves 210, which are continuously formed, by raising the connecting base 110 to a suitable position of the mounting groove 210, And fixed to the base panel 200 by using the adhesive layer 114.

So that the connecting leg 110 is mounted at a predetermined distance along one mounting groove 210. After the connecting cradle 110 is installed at the proper position, the post 120 is coupled to the connecting cradle 110 and the angle mounting hole 130 is coupled to the upper end of the post 120.

Preferably, the angle attachment holes 130 are arranged in the same direction, thereby facilitating the smoothness of the subsequent process.
Particularly, in the present invention, the bracket 140 is used in connecting the post 120 and the angle attachment hole 130. A fitting hole 141 is formed on the lower surface of the bracket 140 and a screw portion 142 is formed on the upper surface of the bracket 140. The upper end of the post 120 is fitted into the fitting hole 141 and the heat insulating plate 150 having the through hole 151 formed therein is inserted into the threaded portion 142. The threaded portion 142 is then inserted into the angle fitting hole 130 To be coupled to the formed fastener (134).

Then, the first upper angle attaching step (S300) is followed and the first upper angle (300) is inserted and fixed in any one of the cross grooves (132) formed in the angle mount (130). The first upper angle 300 is inserted into the cross groove 132 and then the bolt b is used to connect the first upper angle 300 with the support piece 131 constituting the angle attachment hole 130 .

After mounting the first upper angle 300, a second upper angle mounting step (S400) follows.

The first upper angle 300 and the second upper angle 400 are installed at right angles to each other so that the second upper angle 400 is fitted and fixed along the other direction in the cross groove 132.

When the first upper angle 300 and the second upper angle 400 are crossed with each other to be connected to the angle mount 130, a lattice space is formed.

The heat insulating material mounting step S500 is a step of installing the heat insulating material 600 in the lattice space formed by the first upper angle 300 and the second upper angle 400. The heat insulating material 600 may be made of general styrofoam, and preferably a lattice space is formed according to the size of the styrofoam heat insulating material 600 provided as a standard product so that the heat insulating material can be easily installed.

When the installation of the heat insulating material 600 is completed, the roof panel mounting step S600 is continued and the prepared roof panel 500 is placed on the heat insulating material 600 to cover the first upper angle 300, .

More preferably, the waterproof sheet 700 is installed on the heat insulating material 600 before the roof panel 500 is installed after the heat insulating material 600 is installed, thereby preventing leakage of water through the roof.

The present invention can be used for a roof system that is constructed in a prefabricated manner.

100: Prefabricated roof joint
110: connecting base 111:
112: seating cone 113: post connecting hole
114: fastening piece
120: post (coil spring) 121: elastic bar
130: Angle mounting hole 131: Support piece
132: Cross groove 133: Connection hole
134: fastener 140: bracket
141: fitting portion 142: threaded portion
143: connecting piece 150: insulating plate
151: Through hole
200: Base panel 210: Installation home
300: first upper angle
400: second upper angle
500: Loop panel
600: Insulation
700: Waterproof sheet
90: lower angle
S100: Base panel mounting steps
S200: Mounting step for assembled branch
S300: First upper-angle mounting step
S400: Second upper-angle mounting step
S500: Insulation mounting step
S600: Loop panel mounting steps

Claims (10)

A connecting bracket that can be seated and fixed in a mounting groove of the base panel;
A post that is coupled upright to the connecting seat upper surface;
And an angle attachment hole connected to an upper end of the post and provided with four support pieces having a cross shape and having a cross groove formed from an upper surface of the support piece,
A bracket for detachably attaching to a lower end of the angle attachment means is coupled to the upper surface of the bracket, a fitting portion through which the upper end of the post can be fitted is formed on the lower surface of the bracket, a threaded portion protruding from the upper surface of the bracket is provided, And a fastening member to be fastened to the threaded portion is formed. The method according to claim 1,
Wherein the support piece is formed with a connection hole capable of fixedly connecting an angle inserted through the cross groove. 3. The method of claim 2,
Wherein the post is an elastic body. The method of claim 3,
Wherein the elastic body is a coil spring, and the elastic bar is embedded in the center of the coil spring. delete 5. The method according to any one of claims 1 to 4,
Wherein a heat insulating plate is provided between the angle mount and the bracket and a through hole through which the screw thread penetrates is formed at the center of the heat insulating plate so that the joint can be laminated. A base panel supported by the lower angle and having a mounting groove formed at a distance therebetween;
A connecting rod which is coupled to the mounting groove at a distance from the mounting groove and which is seated and fixed to the mounting groove; a post which is coupled to the upper surface of the connecting rod in a standing upright manner; A bracket detachably attached to a lower end side of the angle attachment means is coupled to the upper surface of the bracket so that the upper end of the post can be fitted to the lower surface of the bracket, And a fastening member for fastening the fastening member to the threaded portion is formed on the bottom surface of the angle mount.
A first upper angle which is fitted and fixed in any one of the cross grooves formed in the angle attachment;
A second upper angle which is fitted and fixed in the other direction of the cross groove;
A roof panel fixedly connected to the first upper-angle top surface;
And a heat insulating material installed in a space formed between the base panel and the roof panel. A base panel mounting step for fixing and mounting a base panel having mounting grooves formed at equal intervals on a lower angle;
And a connecting member for a roof assembly including a connecting rod, a post, and an angle mounting hole, separating the connecting rod from the connecting rod, fixing and connecting the connecting rod to a mounting groove of the mounting groove using a fastening piece, The post is coupled to the connecting seat and the angle attachment is connected to the top of the post,
And the upper end of the post is coupled to the fitting hole through a bracket having a threaded portion formed on the upper surface thereof. After inserting the heat insulating plate having the through hole in the threaded portion, the threaded portion is inserted into the lower surface of the angle- A connecting assembly for a prefabricated roof to be engaged with a fastener formed;
A first upper angle attaching step of securing the first upper angle along one direction among the cross grooves formed in the angle mount;
A second upper angle attaching step of securing the second upper angle at right angles to the first upper angle in the other direction among the cross grooves;
Inserting a heat insulating material in a lattice space formed by the first upper angle and the second upper angle;
And a roof panel mounting step of fixing the roof panel to the first upper angle so as to cover the heat insulating material. delete 9. The method of claim 8,
Wherein the roof panel is installed after the waterproof sheet is installed on the heat insulating material after the heat insulating material mounting step.

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