JPH0660522B2 - Waterproof sheet construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a method for applying a waterproof sheet, and more particularly, to an application method for covering the body surface with a plurality of waterproof sheets. Such a construction method is applied to waterproof construction of a building or a structure, for example.

[Conventional technology]

Conventionally, waterproof construction of a building or a structure is such that a plurality of waterproof sheets having appropriate unit dimensions are pasted on the surface of the body with an adhesive, and adjacent edge portions of the respective waterproof sheets are overlapped with each other. It was done by gluing.

[Problems to be solved by the invention]

However, in the conventional waterproof construction as described above, the waterproof sheet cannot be bonded unless the degree of dryness of the frame is sufficient, and sufficient adhesive strength cannot be obtained depending on weather conditions such as temperature, so the construction period Is affected by the weather. Further, in the conventional waterproof construction as described above, since the waterproof sheet has a uniform thickness over the entire surface, the thickness of these joints is almost twice as large as that of the other portions. There is a problem that peeling is likely to occur from the joint portion, and the rising joint portion impedes the flow of rainwater and causes a pool of water to promote rain leakage.

[Means for solving problems]

According to the present invention, in order to solve the above-mentioned problems of the prior art, the joining edge portion has an ear portion for interleaving, and the melt adhesion of the interleaving portions in the interleaving is possible. A waterproof sheet is placed on the surface of the body, a base plate having a nail hole that can be melt-bonded to the ear part is superposed on the ear part of the waterproof sheet, and nailing is performed through the nail hole of the base plate. By fixing the above waterproof sheet to the body,
Then, the ears of the adjacent waterproof sheets corresponding to the ears of the waterproof sheet are superposed, and then the ears of the two waterproof sheets and the pedestal plate are joined to each other by fusion bonding. A construction method is provided.

〔Example〕

Hereinafter, specific examples of the construction method of the present invention will be described with reference to the drawings.

1 (a) to 1 (d) are cross-sectional views showing the steps of one embodiment of the construction method of the present invention.

First, as shown in FIG. 1 (a), the waterproof sheet 4 is placed on the surface of the skeleton 2 such as concrete.

The waterproof sheet 4 has a shape as shown in FIG.
That is, the waterproof sheet 4 is joined to another waterproof sheet having the same structure by interleaving its edge portions. For this reason, the waterproof sheet 4 has an ear 8 on the lower surface side for interlocking at one edge 6 and an edge 10 opposite to the edge 6 for interlocking. It has a top side ear 12. The waterproof sheet 4 is composed of two different waterproof sheets, an ear portion 6 on the lower surface side and an ear portion 12 on the upper surface side.
And so that they can be melt-bonded. An example of such a waterproof sheet 4 is one made of a material such as rubber asphalt or vinyl chloride resin.

Next, as shown in FIG. 1 (b), a long base plate 14 is placed on the lower ear 8 of the waterproof sheet 4 along the longitudinal direction of the ear.

The base plate 14 has a shape and structure as shown in FIG. That is, the width of the pedestal plate 14 is the same as the waterproof sheet 4 described above.
The width is smaller than the width of the ears 8, 12 and has an appropriate length. The pedestal plate is a plate-shaped body having a predetermined strength, and is configured so that it can be melt-bonded to the ears 8, 12 that are the joints of the waterproof sheet 4. As such a pedestal plate 14, a plate-shaped body 16 made of, for example, iron is coated on both surfaces with a layer 18 made of the same material as the waterproof sheet ears 8 and 12 (for example, rubber asphalt or vinyl chloride resin). The following is exemplified. Further, the pedestal plate 14 is provided with a nail hole 20 for penetrating the plate surface to nail it. The nail holes are provided at appropriate intervals along the length direction of the base plate 14.

Next, as shown in FIG. 1 (c), the nail holes 2 of the base plate 14 are
The nail 22 is driven from above through 0, whereby the base plate 14 and the waterproof sheet 4 are fixed on the surface of the body 2. Then, a waterproof sheet 4'having the same configuration as the waterproof sheet is arranged adjacent to the fixed waterproof sheet 4. This arrangement corresponds to the lower ear 8 to which the waterproof sheet 4 is fixed, and corresponds to the upper ear 1 of the waterproof sheet 4 '.
2'is superposed.

Next, as shown in FIG. 1 (d), the lower ear 8 of the waterproof sheet 4, the base plate 14, and the upper ear 12 'of the waterproof sheet 4'.
And are fused and bonded by heating or the like.

Thus, the head of the nail 22 and the pedestal plate 14 are completely covered by the upper ear 12 'of the waterproof sheet 4', and the ear 12 'is melted, so that the watertightness of the joint and the upper surface of the waterproof sheet. Is sufficiently good.

A large number of waterproof sheets can be fixed on the surface of the body by repeating the joining of the waterproof sheets by the above-mentioned interleaving at each joint. Further, although the above-mentioned embodiment shows only the joining of the two opposite edge portions of the waterproof sheet, the joining of the other two opposite edge portions can be performed in the same manner, and thus a large number of waterproof sheets can be obtained. The sheets can be arranged two-dimensionally and fixed.

In the above embodiment, the nail driving interval is, for example, 50 to 15
About 0 cm is suitable, and the intervals are, for example, 100 cm.
In addition, it is preferable that the nail striking distance is relatively narrow, for example, about 20 to 30 cm at a portion near the end of the base plate.

〔The invention's effect〕

According to the method of the present invention as described above, the construction can be performed with sufficient fixing strength even if the skeleton is in a slightly wet state, so that the construction period can be significantly shortened regardless of the weather. Further, according to the method of the present invention, since the base plate is used during nailing, the sheet can be completely fixed even if the nailing interval is large,
Further, since the waterproof sheet can be fixed evenly over the entire interleaving joint portion, it is possible to prevent the waterproof sheet from being damaged due to stress concentration only on the nailing portion due to external force such as wind pressure or movement of the body. Further, in the method of the present invention, since the waterproof sheet is not brought into close contact with the body as a whole, blistering can be easily prevented by providing a small number of vent openings, and therefore damage to the waterproof sheet due to local blistering can be prevented. Further, even if the body is cracked, the waterproof sheet is not affected thereby.

[Brief description of drawings]

1 (a) to 1 (d) are sectional views showing steps of the method of the present invention. FIG. 2 is a cutaway perspective view of the waterproof sheet. FIG. 3 is a partial perspective view of the base plate. 2: body, 4: waterproof sheet, 8 and 12: ears, 14: base plate, 20: nail hole, 22: nail.

Claims (1)

[Claims] 1. A construction method for fixing a plurality of waterproof sheets on the surface of a skeleton in a state in which their adjacent end edges are overlapped and joined to each other and covering the skeleton with the waterproof sheet. A waterproof sheet having an ear portion for peeling and capable of melting and adhering the ear portions in the interleaving is placed on the surface of the body, and fusion bonding with the ear portion is possible on the ear portion of the waterproof sheet. And pedestal plates having nail holes are overlapped and nailing is performed through the nail holes of the pedestal plate to fix the waterproof sheet to the body, and then the ears of the adjacent waterproof sheet corresponding to the ears of the waterproof sheet. A method for constructing a waterproof sheet, characterized in that the two parts of the waterproof sheet are overlapped with each other, and then the ears of the two waterproof sheets and the base plate are joined to each other by fusion bonding.