JPH047784B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for repairing a damaged portion of a metal waterproof surface material installed on a roof or the like.

[Conventional technology]

In recent years, a waterproofing construction method in which metal waterproof surface materials such as stainless steel are seam welded together and covered and laid on the roofs of structures has come to be widely adopted. However, in this type of waterproof construction, if the metal waterproof surface material is damaged due to an accident or other cause during or after construction, it will be repaired, but in that case, It is easy to repair damaged parts with solder or caulking, but it is difficult to maintain watertightness over a long period of time, and it is also possible to apply a metal waterproof plate to the damaged part and seam weld it. Technically and operationally it is extremely difficult. Therefore, a repair method was proposed in Japanese Utility Model Publication No. 61-424, in which a metal plate similar to that of the damaged face material was used and seam welded. This idea is
Cut out the area around the damaged part of the metal surface material in a roughly circular shape, form a rising part on the periphery, and insert a repair plate with a rising part on the periphery of the circular bottom into the circular cut out part. They are fitted together and their rising parts are seam-welded to each other.

[Problem that the invention seeks to solve]

However, in this repair method, it is extremely difficult and requires a high degree of skill to form a rising part on the cut out circular periphery of the installed metal surface material by hand.
Not only is the efficiency poor, but there are also drawbacks such as processing wrinkles occurring at the rising edge, resulting in incomplete seam welding, and rainwater stagnating in the repaired area, or cracks forming, making it impossible to repair.

The present invention improves the drawbacks of conventional repairs as described above, and makes it possible to reliably and easily repair damaged parts of waterproof metal surface materials by seam welding using the same metal plate. The present invention aims to provide a method that can perform repairs with excellent durability.

[Means for solving problems]

The structure of the method of the present invention will be explained with reference to the drawings showing the embodiments.The present invention provides a metal waterproof surface material 2 formed by seam welding the rising parts 4, 4 on both sides to each other. The required width is cut 7, and the rising portions 4, 4 corresponding to the width are cut 6 from slightly below the seam weld 5 over a portion longer than that width to form a low rising portion 4'. A metal repair product in which the cut edges of the metal waterproof surface material 2 are bent to form standing parts 8, 8, and between the standing parts 8, 8, rising parts 9, 9 are formed on both sides. The plate 10 is inserted and mounted, and the upright parts 8, 8 and rising parts 9, 9 are seam welded 12 to each other and laid down, and both end edges of the repair plate 10 are seamed to the low rising part 4'. It is characterized by welding 13.

〔Example〕

Examples of the method of the present invention will be described below with reference to the drawings.

Conventionally, in waterproofing construction using metal plates on the roofs of buildings, etc., as shown in FIG. A plurality of metal waterproof facings 2 made of stainless steel or the like are arranged in parallel and the rising portions 4, 4 of the metal waterproof facings 2, 2 are seam welded 5, 5. The present invention is directed to this laid metal waterproof surface material 2.
In addition, if damage such as holes or cracks occurs during or after construction, the damaged area will be repaired.

As shown in Figure 1, the metal waterproof surface material 2 is damaged B.
If this occurs, first, on both sides of the damaged part A, cut lines a and a along the width direction of the metal waterproof surface material 2, and a fold line b separated from it by the same width as the height of the rising part 4. , b.

As shown in FIG. 2, the seam welded rising portions 4,
4 is cut 6, 6 from a position slightly below the seam weld 5 over a distance 1, 1 that is longer than the distance between the opposing fold lines b and b, leaving low rising parts 4', 4'. At the same time, the face material 2 is cut along cutting lines a and a. Thereby, the part of the face material 2' between the cutting lines a and a is separated from the other parts of the face material 2 and the rising parts 4, 4 of the other joined face material,
This means that 7 resections can be performed.

Next, as shown in Fig. 3, the low rising parts 4', 4' are pushed down, respectively, and the portions from the cutting lines a, a to the folding lines b, b are bent upward from the folding lines b, b and raised. 8, let it be 8.

On the other hand, a repair plate 10 to be used to fill in the excised location 7 is prepared. This repair plate 10 is made of the same metal plate as the metal surface material 2, and as shown in FIG. It has a width, and rising portions 9, 9 corresponding to the rising portions 8, 8 are formed on both sides in the width direction.

Next, the repair plate 10 formed in this way is
As shown in the figure, the repair plate 10 is placed on the cut out part 7, the rising parts 9, 9 of the repair plate 10 are aligned with the opposing surfaces of the standing parts 8, 8, and they are joined by seam welding 12, 12. .

Next, as shown in Fig. 6, seam welding 1
In addition to bending the rising parts 9, 9 and 8, 8, which are 2 and 12, respectively, to the outside, a low rising part 4',
4' stand up. In this case, the low rising portion 4',
4′, the rising portions 9, 9 and the rising portion 8,
8 will stand up together with the low rising parts 4', 4'. And finally, the low rising part 4',
4' is seam welded 13, 13 slightly below its upper edge, and the welded portion is connected to the seam welded portion 5, 5 of the rising portion 4, 4 which has not been cut out 6, 6.

In this way, the damaged part B of the metal waterproof surface material 2
is removed including the vicinity thereof, and a repair plate 10 made of the same material as the face material 2 is attached to the removed portion and seam welded 12 and 13 to each other. The repair is completed by being watertightly bonded to the facing material 2.

〔Effect of the invention〕

As explained above, the method of the present invention allows a metal waterproof surface material formed by seam welding the raised parts on both sides to each other to
The damaged part is pinched and cut out over the required width, and the rising part corresponding to that width is cut out from a place slightly below the seam weld to a part longer than that width to form a low rising part. bending both cut edges of the waterproof surface material to form a raised part, inserting and mounting a metal repair plate with raised parts on both sides between the raised parts;
These raised parts are seam-welded to each other and laid down, and both end edges of the repair plate are seam-welded to the low raised parts.
The damaged metal waterproof cladding is removed by cutting straight lines in the width and length directions of the cladding near the damaged area, and the repair plate attached to the removed area is simply cut into a rectangular shape. It is sufficient to simply form rising parts on both sides of the metal plate, which makes it extremely easy to remove the damaged part and form the repair plate. The later cut edges are made to stand up in a straight line and seam welded in a straight line using the rising parts and the rising parts,
All bending and seam welding can be done in a straight line by seam welding both ends of the repair plate to the rising part of the other face plate, so each of these operations is easy and requires no skill. It can be carried out reliably and efficiently without the need for repairs, and the repair plate is joined to the raised part of the metal face plate and the raised part of other face plates by seam welding, and the seam weld is already seam welded. It is connected to the welded parts of the rising parts of the face plates, which ensure watertightness, excellent durability, and allows for repairs with good water flow.

[Brief explanation of drawings]

The drawings sequentially show an outline of the steps according to an embodiment of the method of the present invention, and FIG. 1 is a perspective view illustrating the removed portion of the damaged area, FIG. 2 is a perspective view showing the removed area, and FIG. The figure is a slope view showing the area where the upright part has been formed after cutting, Figure 4 is a slope view of the repair plate, Figure 5 is a slope view showing the repair plate seam welded to the upright part, and Figure 6 is a slope view of the repair plate. FIG. 3 is a perspective view showing a completed state of repair. 1... Roof structure, 2... Metal waterproof surface material, 4...
... Rising part, 4'... Low rising part, 5... Seam welding part, 7... Cutting part, 8... Standing part, 9...
...Rising part, 10... Repair plate, 12, 13...
Seam weld area, A... Damaged area.

Claims (1)

[Claims] 1. Cut off the metal waterproof surface material made by seam welding the rising parts on both sides to the required width across the damaged part, and cut the rising part corresponding to that width from slightly below the seam welding. A portion longer than the width is cut off to form a low rising part, and both cut edges of the metal waterproof surface material are bent to form a rising part, and between the rising parts, there are raised parts on both sides. Insert and place the metal repair plate with the lower part formed thereon, seam weld the raised parts and the raised parts to each other and let it fall down, and seam weld both end edges of the repair plate to the lower raised part. A method for repairing damaged parts of metal waterproof surface materials.