JPH0435585B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a waterproofing method using a long metal plate.

[Conventional technology]

Conventionally, stainless steel thin plate long plate (thickness 0.3~0.4
The construction of roofs or rooftop waterproof roofs using mm) was carried out as follows. That is, as shown in the cross-sectional view perpendicular to the longitudinal direction of a stainless steel thin long plate cut to a predetermined length according to the roof width, the rising height t from the flat part is approximately 25 mm. As shown in the perspective view shown in Figure 8, this member is seamed and seam welded approximately at the center of the seam, and this process is repeated in sequence. Ta. In addition, in places where the installation of parts is unstable when connecting, place one hanger at a pitch of about 450 mm in the longitudinal direction between the gaps of the already constructed long boards, as shown in Figure 9.
1 is spot welded 12, the end of the next member to be connected is supported on the hanger 11, and the seam welding 8 is carried out at the joint of both plates including the hanger 11.

In the above example, the end of the vertical seam is bent downward into an inverted U-shape. A method of attaching a cap has also been implemented.

[Problem that the invention seeks to solve]

Conventional rooftop waterproofing construction using long stainless steel thin plates has been carried out as described above, but it has had the following problems.

The rising parts of the seams of the thin plates create obstacles for walking, and water accumulates.
Drainage becomes poor.

Since the seam welds are exposed to the atmosphere, it is difficult to guarantee watertightness for a long time. In particular, seam welding in areas where a hanger is used is incomplete because the wall thickness increases only in those areas, and pinholes are likely to occur.

An object of the present invention is to solve the above-mentioned problems and provide a construction method that can flatten the entire surface by eliminating the rising part at the seam joint of thin plates and ensure a long life of the seam weld. There is a particular thing.

[Means for solving problems]

In the present invention, in a waterproofing method for constructing a roof or rooftop waterproof roof in which metal plates are sequentially welded, the metal plates are welded in advance at approximately right angles to one of both side edges along the longitudinal direction of the long metal plates to be connected. A rising bent portion is formed, and the bent portion is overlapped with the flat side edge of another long metal plate already placed on the roof subsurface so that the side edges overlap, and the welding is performed. The long metal plate to be processed is held upright on the side edge of the other long metal plate with the side edge of the bent part facing outward, and the overlapping bent part and the other long metal plate are After seam welding the side edges of the metal plates in the longitudinal direction, bend the long metal plates that are to be connected while standing upright at the fold line of the bent part so as to overlap the bent part, and repeat this process. I made it.

According to one embodiment of the present invention, the elongated metal plate is one in which a plurality of grooves are machined in the longitudinal direction on the flat portions of both side edge portions.

[Effect]

In the present invention, the long metal plate to be welded is
Hold the bent part upright on the side edge of another long metal plate with the side edge of the bent part facing outward, and connect the overlapping bent part and the side edge of another long metal plate in the longitudinal direction. After seam welding, we bent the long metal plate that was standing upright at the fold line of the bent part so that it overlapped with the bent part, and we repeated this process.
It can be laid flat on top of a flat weld, and since the weld at the bend is covered by the connecting member, the weld is not exposed to the atmosphere.

[Embodiments of the invention]

An embodiment of the present invention will be described in which a waterproof rooftop roof is constructed using long thin stainless steel plates (thickness: 0.3 mm to 0.4 mm, width: 900 mm, length: 10 m).

First, as shown in the cross-sectional view perpendicular to the longitudinal direction of a long stainless steel thin plate shown in Fig. 1, one 50 to 70 mm section of the longitudinal side edge is processed so that the step 1 is about 3 mm, and the other side is A member is prepared in which the bent portion 2 is formed by bending the bent portion 2 at right angles in the same direction as the step 1.

FIG. 2 is an explanatory diagram for connecting members. First, a pedestal 5 with an inclined upper surface is placed under the already constructed member 3 to be connected, and is set so that the step portion at the end protrudes. Bent part 2 of member 4 to be connected next
As shown in FIG. 2, align the stepped portion of the member 3 and use the claws 6 to secure the side edges of both plates in an overlapping state. In this state, the member 4 is held standing on the member 3 with the side edge of the bent portion facing outward.

FIG. 3 is a perspective view for explaining the connection part. As shown in FIG. 3, after spot welding 7 is performed at intervals of 100 to 200 mm on the member held in place by the knob 6, the knob 6 is removed. , seam welding 8 is performed continuously over the entire length.

FIG. 4 is a plan view of the connection section. After completing the seam welding 8, an oblong hole 9 (10 mm wide and 20 mm long) as shown in Fig. 4 is made in the connecting part of the two overlapping plates.
After machining with a pitch of 450 mm to 600 mm, the pedestal 5 shown in FIG. 2 is removed, and the oval hole 9 is secured to the base material using a slide washer. The oval hole portion 9 absorbs the positional deviation of the hole. Next, the upright portion of the member 4 is laid down on top of the connecting portion, thereby completing the connection work of one member. Repeat the above steps to proceed with construction. FIG. 5 shows the state of the connecting parts of the members.

In the above embodiment, a case was described in which the portion between both side edges of the members 3 and 4 is a flat portion, but as shown in FIG. By machining a plurality of grooves (or ribs), it is possible to absorb deformation caused by thermal expansion and contraction, and it is also extremely effective in improving strength.

〔Effect of the invention〕

As explained above, the present invention has a flat finish with no rising part of the welded part, which allows rainwater to flow easily.
Also, it does not become a barrier for walking. In addition, since no hangers are used in principle, complete watertightness can be maintained with no incomplete welding, and since the seam welds are covered one after another by parts, they are not exposed to the atmosphere. Even longer lifespan is maintained.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a member according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the first stage of connection of the member.
Fig. 3 is a perspective view showing the connection state, Fig. 4 is a plan view of the connection surface, Fig. 5 is a sectional view showing the part where the connection is completed, Fig. 6 is a sectional view of the grooved member, Fig. 7 is a sectional view of a conventional member, Fig. 8 is a perspective view showing how the member is connected, Fig. 9 is a perspective view showing how the hanger is attached, and Fig. 10 is a connection of another example. It is a sectional view showing the situation. In the figure, 1...step part, 2...bending part, 3
... Member to be connected, 4... Member to be connected, 5...
...Frame, 6...Lock, 7...Spot welding, 8
... Seam welding, 9 ... Oval hole, 10 ...
The groove, t...the length of the rising edge, and the same reference numerals in the drawings indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. In a waterproofing method for constructing a roof or rooftop waterproof roof in which metal plates are sequentially welded, one of the longitudinal edges of the long metal plates to be connected is provided with a First, a bent part is formed that stands up at almost a right angle, and the bent part is overlapped on the flat side edge of another long metal plate already placed on the roof subsurface so that the side edges overlap each other. The long metal plate to be welded is held upright on the side edge of the other long metal plate with the side edge of the bent part facing outward, and the overlapping bent part and another long metal plate are After seam welding the side edges of the long metal plates in the longitudinal direction, bend the long metal plates to be connected while standing upright at the fold line of the bent part so as to overlap the bent part. A waterproofing method using long metal plates that is characterized by repeated steps. 2. The waterproofing method using a long metal plate according to claim 1, characterized in that the long metal plate has a plurality of longitudinal grooves formed in a flat portion between both side edges.