KR101177341B1 - A waterproof structure of a rooftop using a stud grip sheet and its procedure - Google Patents

Abstract

PURPOSE: A waterproof structure of a rooftop using a stud grip sheet and a construction method thereof are provided to prevent a stud grip sheet from becoming separated from rooftop bottom concrete. CONSTITUTION: A waterproof structure of a rooftop using a stud grip sheet is composed as follows. A mesh(60) is fixed to the top surface of rooftop bottom concrete. A rooftop bottom sheet(71) formed by connecting multiple sheets to each other is loaded on the mesh. A waterproof mortar layer(70) is formed on the bottom surface of the rooftop bottom sheet. The touching parts of the rooftop bottom sheet and a waterproof protrusion sheet and a railing sheet are welded. The waterproof protrusion sheet is fixed to the iner surface of a waterproof protrusion of a rooftop. The railing sheet is fixed to the inner side of a railing.

Description

A waterproof structure of a rooftop using a stud grip sheet and its procedure}

The present invention relates to a rooftop waterproof structure using a stud grip sheet and a construction method thereof, and more particularly, to effectively apply a stud grip sheet to a rooftop to implement rooftop waterproofing, and to have a waterproofing effect upon rooftop landscaping. The present invention relates to a roof waterproof structure using a stud grip sheet capable of maintaining a roof waterproof state and a construction method thereof.

In general, the roof of a building made of reinforced concrete may be aging the building by rainwater infiltrates into the building. Accordingly, the present invention further includes a waterproof layer formed of an asphalt sheet or a synthetic polymer sheet, or a waterproof layer formed by applying a coating waterproofing material such as rubber asphalt, acrylic, polyurethane, or the like.

However, in the case of forming a waterproof layer with a waterproof sheet, the seam between sheets is not only inconvenient to be manually sealed one by one by using a sealing material, heat sealing, connecting material, tape or rivet, etc. Due to the bonding, the sheet ruptured and there was a problem of leaking defects.

In addition, when the coating film waterproofing material is applied to form a waterproof layer, after the primer is applied, curing is performed for at least about 2 hours, divided coating is applied twice a waterproofing agent, and coating is applied at least twice for two hours. There was a problem in that it takes at least 4 days or more to form a waterproof layer, such as curing over 24 hours.

Therefore, in order to solve this problem, a method of forming a double waterproof layer by combining a waterproof sheet and a waterproof film has been developed in recent years.

However, this method still combines the seams between sheets using heterogeneous materials, so that the waterproof layer does not conform to the base material, and the base material is ruptured or lifted up when the base material is cracked due to the stretching behavior of a large amount of water according to the change of the outside temperature. Has

In addition, in order to solve this problem, a method of forming an insulating space between the base material and the waterproof layer without the close contact between the waterproof layer and the base material has recently been developed. However, this method must form the base layer for the insulating space using heterogeneous materials. By combining these base layers and the sheet-to-sheet joints with dissimilar materials, this method does not comply with cracks of the base substrate, and the construction method is complicated and expensive. There was a costly problem.

In addition, even if a small gap is formed in the base layer joint, the leakage is expanded through the insulating space, it is difficult to track the leak site, the cost of repair work is increased, and the durability of the building is also reduced.

In addition, this method did not provide a solution for drainage, through pipes, parapet joints, etc., which account for more than 80% of the causes of leakage.

In addition, even if the waterproofing is ensured, condensation caused by temperature difference between inside and outside may cause mold, become contaminated, and may be mistaken for waterproofing and re-installed waterproofing. There was a problem of insufficient insulation and condensation prevention.

Recently, there are many cases of landscaping on rooftops, but it is common for plants to penetrate the waterproof layer and damage the building. There is no structure.

The leakage of the roof slabs is caused by defects in construction and is caused by concrete cracks, which are largely affected by cracks in concrete.

In general, when the waterproofing layers are coupled to existing concrete structures, the watertight layer swells or bursts due to the difference in elongation rate according to the change of seasons, humidity, and temperature as time passes, and due to moisture Corrosion or oxidation of the concrete layer releases the waterproof state has been a problem of repeated leakage as well as shortening the life of the building.

In the case of waterproofing the roof by attaching the sheet, the surface of the roof concrete is cleaned and the sheet is fixed with an adhesive. However, there has been a problem that the sheet floats due to the change of temperature and humidity according to the change of season.

An object of the present invention is to provide a structure and a construction method of water-tightening the entire rooftop using an environmentally friendly high density stud grip sheet during rooftop waterproofing.

To this end, the stud grip sheet is firmly fixed on the rooftop concrete including the parking lot floor to prevent the sheet from being lifted according to the seasonal change.

In addition, the waterproof jaw sheet and the railing seat sheet are fixed to the inner wall of the roof top waterproof jaw and the railing, and the gap between the waterproof jaw sheet and the railing seat sheet is welded with the roof top sheet to eliminate the gap, and the roof top sheet is laid. Milk mortar is injected underneath to make it firmly fixed to the rooftop concrete.

The roof floor sheet and milk mortar are firmly coupled, and the milk mortar and the roof concrete are firmly configured.

The present invention is a mesh floor 60 is fixed to the upper surface of the rooftop concrete 20 to achieve the object as described above, a plurality of sheets are welded to each other connected to each other on the mesh 60 to form a rooftop floor The sheets 71 are stacked, and a waterproof mortar layer 70 is formed to firmly hold between the bottom of the rooftop sheet 71 and the rooftop concrete 20, and the concrete is formed on the inner surface of the rooftop waterproofing jaw 30. Where the watertight jaw sheet 31 to be fixed and the handrail seat sheet 41 fixed to the inside of the handrail 40 is in contact with the rooftop sheet 71 is welded to each other to form a watertight weld 72 is formed. The pipe mounting wall 5 is formed on one side of the upper surface of the rooftop concrete 20, and the pipe is installed inside the pipe mounting wall 5, and the opening sheet is spaced apart from the outside of the pipe mounting wall 5. 91) is installed and the lower end is welded to the rooftop sheet (71) The part 72 is formed, and the milk mortar filled through the bottom of the roof top sheet 71 is raised to the top of the opening sheet 91 to provide a roof waterproof structure using a stud grip sheet, characterized in that composed of a cured structure. do.

In addition, a rooftop concrete is poured in a state where the waterproofing jaw outer plate is fixed along the circumference of the roof top steel plate, and the rooftop waterproofing method is performed in the construction method of rooftop waterproofing on the top surface of the rooftop concrete. And install the handrail outside the formwork 42 and the handrail inner form 43 and the waterproof jaw formwork 32 for the waterproof jaw (30), while the handrail seat sheet 41 on the inner formwork (43) and waterproof jaw formwork 32 Step) installation step 110 for the handrail waterproof jaw to fix the waterproof jaw sheet 31); A step of placing concrete railing jaw waterproofing step by placing concrete on the formwork railing jaw formwork 120; A waterproof jaw upper finishing step 130 for closing the waterproof jaw 30 and the balustrade 40 with the waterproof jaw flashing 51 and the balustrade stand 50 respectively; The roof floor sheet 71 is formed by fixing the mesh 60 between upper surfaces of the rooftop concrete 20 and welding a plurality of sheets having stud grips formed thereon to match the rooftop floor size, and the rooftop sheet 71. Laying the protruding portion (6-2) of the facing down, the sheet laying step 140 for installing the injection pipe 80 on one side of the rooftop sheet (71); Milk mortar injection step 150 for injecting milk mortar through the injection pipe (80); Curing step (160) for curing the injected milk mortar to form a waterproof mortar layer (70); It characterized in that it is included, the sheet laying step 150, the rooftop floor cleaning step 141 to clean the upper surface of the rooftop concrete 20 so that the bond with the milk mortar well; A sheet connection welding step (142) having a rooftop sheet (71) which cuts a plurality of rooftop sheets (71) to fit the rooftop size, and welds each other to cover the entire rooftop floor; In order to increase the adhesion of concrete and prevent concrete cracking, the mesh 60 is attached to the rooftop concrete 20, and the rooftop sheet is formed so that the protrusions 6-2 of the welded rooftop sheet 71 face downward. Mesh attachment and rooftop sheeting step 143 (71); The roof bottom sheet 71 and the waterproof jaw sheet 31 are welded and fixed to each other, and the roof top sheet 71 and the handrail seat 41 are welded and fixed to the place where the roof top sheet and the waterproof jaw sheet are fixed. , Handrail welding step 144; Fixing the tubular body of the handrail height vertically to one side of the rooftop sheet 71, the lower end of the tubular body fixed to communicate with the bottom of the rooftop sheet 71, and forms an opening 90 in the rooftop sheet 71 Injection tube, opening forming step 145; Steps to press the sand bag or euro foam to release the weight of the sand bag or euro foam as a whole so that the top surface of the rooftop sheet 71 is not lifted; Roof waterproofing method using a stud grip sheet, characterized in that it comprises a To provide.

According to the present invention, the stud grip sheet is fixed to both the inner surface of the waterproof jaw, the inner surface of the handrail and the roof bottom, and the connection portion of each sheet is fixed by PE welding, thereby eliminating any gaps. The water will not leak.

And the roof floor sheet is welded on the surface with the protrusions, and turned over and fixed to the roof floor concrete, the sheet surface is shown to be clean, and when the protrusions are fixed with the milk mortar, the entire sheet is held, so that the lifting phenomenon is eliminated. It works.

When the milk mortar is injected into the bottom of the roof top sheet, it is pressed with a heavy euro foam or sand bag, and thus is firmly fixed without lifting the floor. And when the milk mortar is filled through the vertically injecting tube, if the space between the roof top sheet and the roof concrete surface is filled, the milk mortar is pushed up toward the opening through the space part, so the roof top floor sheet is completely The bottom part is filled.

And on the sheet of the present invention there is an effect that can be directly planted landscape.

1 is a process chart showing a rooftop waterproof construction method using the stud grip sheet of the present invention.
Figure 2 is a detailed partial process diagram corresponding to a part of the process of Figure 1 showing a rooftop waterproof construction method using the stud grip sheet of the present invention.
3 to 17 are cross-sectional views sequentially showing a rooftop waterproof construction method using the stud grip sheet of the present invention.
18 is a cross-sectional view illustrating a state in which concrete is injected by installing a stud grip sheet of a roof waterproof structure constructed by a roof waterproofing method using the stud grip sheet of the present invention.
19 is a cross-sectional view showing a state in which the concrete is injected into the stud grip sheet and the roof bottom surface in the roof waterproof structure constructed by the roof waterproofing method using the stud grip sheet of the present invention.
20 is a plan view showing a state before the concrete injection in the roof waterproof structure using the stud grip sheet of the present invention.
FIG. 21 is a perspective view showing a stud grip sheet used for a roof waterproof structure using the stud grip sheet; FIG.

Hereinafter, the structure and operation of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, the term or word used in the present specification and claims is based on the principle that the inventor can appropriately define the concept of the term in order to best describe the invention of his or her own. It should be interpreted as meanings and concepts corresponding to the technical idea of

The present invention is characterized in providing a waterproof structure and a construction method thereof, which have a waterproofing effect such that the landscaping can be directly performed on the roof, and the waterproofing effect does not drop even after a long time.

The waterproof structure of the present invention uses the stud grip sheet shown in FIG. 21. By applying the stud grip sheet, the waterproof jaw sheet 31, the handrail seat 41, the roof top sheet 71, and the opening sheet 91 are provided. To form. The sheet is formed by forming the plate body 6 from an environment-friendly material such as high density polyethylene (HDPE), and fixing a plurality of protrusions 6-1 to one side of the plate body 6. A fixing part 6-1 is integrally formed at one end of the protruding part 6-1 to be fixed by heat fusion with the plate body 6. This protrusion 6-1 may also be referred to as a stud grip. The sheet to which the protrusion 6-1 is attached is defined as a stud grip sheet.

The roof is waterproofed using the stud grip sheet. First, the mesh 60 is fixed to the upper surface of the rooftop concrete 20 to prevent cracking when combined with the rooftop sheet 71 and milk mortar. Is fixed.

And a plurality of sheets are welded to each other on the mesh 60 to form a single body rooftop sheet 71 is laminated, so as to hold firmly between the bottom of the rooftop sheet 71 and the rooftop concrete 20 Milk mortar is injected to form a cured waterproof mortar layer 70.

Where the watertight jaw sheet 31 fixed with concrete on the inner surface of the roof waterproof jaw 30 and the handrail stand sheet 41 fixed with concrete on the inside of the handrail 40 are in contact with the rooftop sheet 71 are welded to each other. As the weld part 72 is formed, a watertight structure is formed around the roof top, the railings, and the waterproof jaw.

The pipe installation wall 5 is formed on one side of the upper surface of the rooftop concrete 20, and the pipes connected to the rooftop are installed to communicate with the rooftop. However, in the case of the rooftop without the piping installation wall 5, the opening sheet 91 is installed by forming a wall instead of the piping installation wall.

The opening sheet 91 is spaced apart from the outside of the pipe installation wall 5, and the lower end of the opening sheet 91 is welded to the rooftop sheet 71 to form a welding portion 72. Milk mortar filled through the bottom of the rooftop sheet 71 is raised to the top of the opening sheet 91 is cured.

Looking at the roof waterproof structure and its construction method in more detail as follows.

Roof structure (1) made of new or existing concrete is composed of H beam (2) and the bottom steel plate (3), or made of slab of reinforced concrete. In this way, the bottom plate 3 can be replaced by a slab.

The waterproof jaw outer plate 4 is fixed along the circumference of the roof top steel plate 3, and the roof top concrete is poured with the waterproof jaw outer plate 4 as an outer formwork. It is fixed higher than the upper surface is used as the outer formwork of the waterproofing jaw 30 to be described later. The rooftop concrete placing step 100 may be different according to each building.

In this step, a hole for drainage is formed in the bottom steel plate 3, and the PE drainage pipe 10 is fixed in accordance with the hole. At this time, the PE drain pipe 10 is firmly fixed using a PE index plate, and seals the top so that concrete does not enter into the inside.

When laying the rooftop sheet 71 to be described later, a hole is formed in the rooftop sheet 71 to be fixed by welding to the outside of the PE drain pipe 10.

In the present invention, the rooftop waterproofing is performed on the upper surface of the rooftop concrete 20 formed as described above.

A handrail 40 and a waterproof jaw 30 are installed along the circumference of the rooftop concrete 20 according to the designer's choice. When the handrail is made of hardware, the concrete balustrade of the present invention is not formed. Since it is common to install the iron railings where the waterproofing jaw is located, the degree to which the installation is slightly changed as in this case will belong to the scope of the present invention.

Fixing the balustrade outer formwork 42 to the waterproof jaw outer plate (4) from the outside, the formwork fixing column 44 to the inner side of the balustrade outer formwork 42 to stably support the formwork. At this time, the formwork fixed pillar 44 is embedded in the handrail 40 concrete as an inner structure of the handrail. At this time, the form fixing pillar 44 to be used uses a rebar or beam.

Balustrade inner formwork 43 is installed to face the balustrade outer formwork 42, and waterproof jaw formwork 32 is installed so as to face the waterproof jaw outer plate 4 to form a waterproof chin 30.

As described above, the step of installing the balustrade waterproof jaw formwork for fixing the handrail seat sheet 41 and the waterproof jaw sheet 31 to the inner surface of the handrail inner form 43 and the waterproof jaw formwork 32, that is, the concrete contact portion, respectively. The handrail seat sheet 41 and the waterproof jaw sheet 31 are fixed to the upper and lower ends of the balustrade in the formwork 43 and the waterproof jaw formwork 32 by nails.

At this time, the nail nail is removed when the mold is removed, the nail at the bottom is buried in the injected milk mortar, the nail at the top is not visible into the interior of the flashing.

When placing concrete on the formwork of the handrail 40 and the waterproofing jaw 30 in the step of placing the handrail waterproof jaw concrete 120, the concrete is provided with the protrusions 6-2 of the handrail seat 41 and the waterproof jaw sheet 31. As combined, the handrail 40 and the waterproof jaw 30 having each sheet as an inner surface are formed.

In the waterproof jaw upper finishing step 130, the waterproof jaw 30 and the handrail 40 are respectively fixed to the waterproof jaw flashing 51 and the balustrade stand flashing 50 to finish. Flashing is a structure that wraps the top of the waterproof jaw 30 and the balustrade 40 toward the bottom so that rainwater does not penetrate into the interior through the top of the waterproof jaw 30 and the balustrade 40. The materials for flashing are made of PE, iron and stainless steel.

 In the sheet laying step 140 of the present invention, the roof top sheet 71 is formed by fixing a mesh 60 between upper surfaces of the rooftop concrete 20 and welding a plurality of sheets having stud grips formed thereon to each other. It is laid in accordance with the size but laid so that the protrusion 6-2 of the roof top sheet 71 faces downward, the step of installing the injection pipe 80 on one side of the roof top sheet 71, it consists of the following steps.

The rooftop cleaning step 141 which cleans the upper surface of the rooftop concrete 20 so as to be combined with milk mortar is a basic step, and prevents the rooftop concrete 40 and the rooftop sheet 71 from being separated. do.

In the sheet connection welding step 142, a plurality of rooftop sheets 71 are cut to fit the rooftop size and welded to each other to cover the entire rooftop floor. The welding rod of the same material is melted and fixed so that water does not penetrate between the rooftop sheets 71. This welding method is performed using a welding machine, but in the side where the protrusion 6-2 of the rooftop sheet 71 exists. Therefore, the opposite surface of the rooftop sheet 71 to be the rooftop surface is formed as a clean surface.

In the step of attaching the mesh and laying the rooftop sheet 143, the mesh 60 is attached to the rooftop concrete 20 to increase the adhesion of the concrete and prevent the concrete cracking, and the protrusion of the welded rooftop sheet 71. Cover the roof top sheet 71 so that (6-2) faces downward. The mesh 60 is fixed to the rooftop concrete with small nails and then shaken to cover the rooftop sheet 71.

Next, the roof top sheet, the waterproof jaw sheet, and the handrail seat connection welding step 144 are passed through, where the roof top sheet 71 and the waterproof jaw sheet 31 are joined to each other by welding. This welding also preferably uses a electrode made of the same material as the sheet. And in the same way to weld and fix the place where the roof top sheet 71 and the handrail seat 41 abuts. When welding in this way, the roof top sheet 71, the handrail seat sheet 41, the waterproof jaw sheet 31 becomes a body to prevent water from penetrating below.

Injecting the tube, the opening forming step 145 is provided with a structure for curing by injecting the milk mortar. In this step, the injection pipe 80, which is a pipe of a handrail height, is vertically fixed to one side of the rooftop sheet 71, and the lower end of the tube is fixed to communicate with the bottom surface of the rooftop sheet 71.

Therefore, when the milk mortar is injected through the injection tube 80 enters the bottom surface of the rooftop sheet 71. And while the inside is filled by the injected milk mortar to form an opening 90 through which air can be released so that air bubbles do not occur. The opening 90 is spaced apart from the outside of the piping installation wall 5 as shown in FIG. 20 to weld the rooftop sheet 71 and the railing seat sheet 41 to form and fix the opening sheet 91 so as to contact and fix the connection. do.

Next, the roof top sheet 71 is not lifted through the sandbag or the euro foam through the pressing step 146. At this time, the upper surface of the roof top sheet 71 is pressed to release the sand bag or the euro foam of the weight as a whole, it is also possible to use other heavy materials other than the sand bag or euro foam.

However, it is desirable to use Euroform, which can be easily obtained at the construction site.

In the milk mortar injection step 150 for injecting the milk mortar through the injection pipe 80, the milk mortar is injected, and when the milk mortar is injected through the injection pipe 80, the roof top floor and the rooftop floor 20 The bottom surface of the sheet 71 is filled. When the bottom surface of the rooftop sheet 71 is completely filled, the milk mortar rises through the opening 90, and when the opening 90 is filled, the bottom surface of the rooftop sheet 71 is completely filled.

After the curing step 160 to cure the injected milk mortar is injected to form a waterproof mortar layer 70 firmly coupled to the rooftop sheet 71, the injection pipe 80 is removed to finish Will be

And it goes through the step of installing a railing support, such as iron railings (170). In the process, the bottom of the railing support and the rooftop waterproof sheet and joint are sealed by welding.

And roof gardening construction (180) is to be selectively, in this process, when planting the soil and planting, the roots of the plant do not penetrate down, so unlike the conventional rooftop waterproofing layer does not cause damage to the rooftop waterproofing layer by plants Do not.

And artificial turf 190 can be selectively installed thereon. It is to protect the upper surface of the roof waterproof sheet 71 formed as a roof top surface, to prevent direct sunlight from being directly irradiated to extend the life and improve the environment of the occupants.

1: roof frame 2: H beam
3: bottom steel sheet 4: waterproof jaw shell
5: pipe mounting wall 6: plate
6-1: Fixed part 6-2: Protruding part
7: weight 10: drain pipe
20: rooftop concrete 30: waterproof chin
31: waterproof jaw sheet 32: waterproof jaw formwork
40: handrail 41: handrail seat
42: balustrade outer formwork 43: balustrade inner formwork
44: formwork pillar 50: handrail flashing
51: waterproof jaw flashing 60: mesh
70: waterproof mortar layer 71: roof floor sheet
72: welded portion 73: connection welded portion
80: injection tube 90: opening
91: opening sheet
100: roofing concrete
110: Balustrade, waterproof jaw formwork installation
120: Railing, waterproof jaw concrete pouring
130: waterproof jaw top finish
140: sheeting
141: rooftop floor cleaning
142: roof top sheet connection welding
143: mesh attached and roof floor sheet laying
144: welding of roof top sheet, waterproof jaw, handrail seat
145: forming the injection tube opening
146: pressed with a sand bag or euro foam
150: milk mortar pouring
160: curing
170: railing support installation
180: Rooftop Landscaping
190: artificial turf

Claims (4)

delete The mesh 60 is fixed to the upper surface of the rooftop concrete 20, and a plurality of sheets are connected and welded to each other on the mesh 60 to form a rooftop sheet 71 which forms a body, and a rooftop sheet ( 71. The waterproof mortar layer 70 is formed to firmly hold the bottom surface and the rooftop concrete 20, and the waterproof jaw sheet 31 and the handrail 40 are fixed to the inner surface of the rooftop waterproofing jaw 30 by concrete. Where the handrail is fixed to the inside of the handrail seat 41 is in contact with the rooftop sheet 71 is welded to each other where the welded portion 72 is formed,
The pipe mounting wall 5 is formed on one side of the upper surface of the rooftop concrete 20, the pipe is installed inside the pipe mounting wall 5, and the opening sheet 91 is spaced apart from the outside of the pipe mounting wall 5. The lower end is welded to the rooftop sheet 71 and the weld portion 72 is formed, and the milk mortar filled through the bottom of the rooftop sheet 71 is raised to the top of the opening sheet 91 to be cured. Rooftop waterproof structure using a stud grip sheet, characterized in that.
delete In the construction method where the roof top concrete is poured while the waterproof jaw outer plate is fixed along the circumference of the roof top steel sheet, and the roof top waterproof is applied to the top surface of the roof top concrete.
Balustrade outside form 42, handrail inner form 43 and waterproof jaw formwork 32 for handrail 40 and waterproofing jaw 30 are installed along the rooftop concrete circumference. Handrail installation step 110 installation step of fixing the handrail seat sheet 41 and the waterproof jaw sheet 31 to the jaw formwork 32;
A step of placing concrete railing jaw waterproofing step by placing concrete on the formwork railing jaw formwork 120;
A waterproof jaw upper finishing step 130 for closing the waterproof jaw 30 and the balustrade 40 with the waterproof jaw flashing 51 and the balustrade stand 50 respectively;
The roof floor sheet 71 is formed by fixing the mesh 60 between upper surfaces of the rooftop concrete 20 and welding a plurality of sheets having stud grips formed thereon to match the rooftop floor size, and the rooftop sheet 71. Laying the protruding portion (6-2) of the facing down, the sheet laying step 140 for installing the injection pipe 80 on one side of the rooftop sheet (71);
Milk mortar injection step 150 for injecting milk mortar through the injection pipe (80);
Curing step (160) for curing the injected milk mortar to form a waterproof mortar layer (70); It is made to include;
Sheeting step 150,
A rooftop cleaning step 141 for cleaning the upper surface of the rooftop concrete 20 so as to be well coupled to the milk mortar;
A sheet connection welding step (142) having a rooftop sheet (71) which cuts a plurality of rooftop sheets (71) to fit the rooftop size, and welds each other to cover the entire rooftop floor;
In order to increase the adhesion of concrete and prevent concrete cracking, the mesh 60 is attached to the rooftop concrete 20, and the rooftop sheet is formed so that the protrusions 6-2 of the welded rooftop sheet 71 face downward. Mesh attachment and rooftop sheeting step 143 (71);
The roof bottom sheet 71 and the waterproof jaw sheet 31 are welded and fixed to each other, and the roof top sheet 71 and the handrail seat 41 are welded and fixed to the place where the roof top sheet and the waterproof jaw sheet are fixed. , Handrail welding step 144;
Fixing the tubular body of the handrail height vertically to one side of the rooftop sheet 71, the lower end of the tubular body fixed to communicate with the bottom of the rooftop sheet 71, and forms an opening 90 in the rooftop sheet 71 Injection tube, opening forming step 145;
Steps to press the sand bag or euro foam to release the weight of the sand bag or euro foam as a whole so that the top surface of the rooftop sheet 71 is not lifted; Roof waterproofing method using a stud grip sheet, characterized in that it comprises a .

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