JP2007186941A5 - - Google Patents

Description

Corrugated asbestos slate roof remodeling method

  The present invention relates to a corrugated asbestos slate roof remodeling method for leaving an old asbestos slate roof as it is, and further rolling a new slate roof or a folded-plate roof or the like that does not contain asbestos.

  Conventionally, there are many ways to slate roofs that have C-shaped steel installed on the roof as horizontal members, and to stop the corrugated asbestos slate with hook bolts, and the corrugated asbestos slate roof has decayed and remains. Is the current situation. Conventionally, when this decayed, it was repaired and improved, or it was removed and a new roof was constructed. However, asbestos is used as a molding material for corrugated asbestos slate as a problem. In order to prevent the risk of asbestos scattering during construction, drilling, removal, welding, etc., which are thought to cause scattering, are prohibited.

  As for the structure in which the corrugated asbestos slate is spread, as shown in FIG. 2, the C-shaped steel as the horizontal member 11 is laid on the roof with the opening surface facing downward, and the corrugated asbestos slate 13 has Hook bolts 17 are drilled, hook bolts are inserted into the through holes, hooks at the lower end are hooked on the opening edges of the C-shaped steel, and cap seals 23 are attached to the hook bolt shafts on the corrugated asbestos slate 13 so as to be vertically movable. By holding down the nut 21 by tightening the nut 21, the hook is held so as not to come off. Therefore, the male screw 25 of the hook bolt 17 is exposed together with the cap packing 23 and the nut 21 at the upper end of the peak portion of the corrugated asbestos slate 13.

  However, when it comes time to replace the hook bolt, the male screw at the top end of the hook bolt rusts and it is often impossible to remove the nut. Then, when removing the corrugated asbestos slate, it is necessary to remove the hook bolt from the C-shaped steel. Since the hook bolt is struck when it is pressed down, an excessive force is applied to the corrugated asbestos slate, causing it to break down, resulting in the risk of asbestos scattering from the destruction port. Also, if the corrugated asbestos slate is dropped from the roof, there is a risk that more asbestos will be scattered.

  In view of the above circumstances, the present invention leaves the old roof made of corrugated asbestos slate as it is, and a new corrugated slate that does not contain asbestos (or other corrugated roof or folded sheet roof). The object of the present invention is to provide a corrugated asbestos slate roof renovation method capable of stably and powerfully laying a new horizontal member made of C-shaped steel as a base material for constructing the new roof plate.

  In order to solve the above-mentioned problems, the present invention is provided on an old roof on which corrugated asbestos slate is spread by hanging an old hook bolt on an old horizontal member made of C-shaped steel and fastening its cap packing with an old nut. In order to construct a new roof that is covered with a new roof plate that does not contain asbestos, a new horizontal member made of another C-shaped steel is installed above the old horizontal member as a base material, and a new horizontal member is installed. The top support hardware provided with a pair of left and right leg pieces and a new horizontal member straddling the mountain portion between the corrugated asbestos slate and the top support hardware is attached to the shaft of the old hook bolt. A female male thread type split screw is screwed to the male screw for tightening the old nut formed at the upper end of the nut and fixed with a fastener, and a new nut is screwed onto the upper end of the split screw that penetrates the center of the top support hardware. Insert and tighten to support the new horizontal member There is provided a roof renovation method of waveform asbestos slate, characterized in that to fix the parts supporting hardware.

  Since the corrugated asbestos slate roof remodeling method is constructed as described above, the top support hardware that supports the new horizontal member is attached across the mountain part of the corrugated asbestos slate with leg pieces, and it becomes old and decays. A new split screw is screwed onto the male thread of the old hook bolt and fixed with a fastener, and the top support hardware is stably fixed by screwing the nut into the split screw and tightening. Therefore, it is possible to strongly support the new horizontal member as a base material on which the new roof plate is spread.

  As described above, according to the present invention, it is possible to omit the work of asbestos scattering in order to spread the new roof board on the old roof that has been rolled with corrugated asbestos slate. Even if the male screw of the old hook bolt of the old roof is rusted, it is safe, and a new screw is made with it as a shaft, and a nut is screwed into it and tightened to firmly attach the top support hardware, In addition, by installing a new horizontal member, there is an excellent effect that a new roof plate not containing asbestos can be easily and stably spread.

  Further, according to the second and third aspects, the new horizontal member can be supported more stably, and the work procedure is good.

  Next, embodiments of the present invention will be described with reference to the drawings.

The drawing shows an embodiment, and the roof remodeling method of the corrugated asbestos slate is such that the existing old roof Ra is left as it is, and a new roof Rb is constructed on it, and the corrugated asbestos slate 13 is formed on the mountain portion. The top support metal 1 to be arranged, the new horizontal member 2 received by the plurality of top support hardwares 1, and the new roof plate 3 placed on the new horizontal member 2 are used. A corrugated slate that does not contain asbestos is used for the new roof plate 3, and it is fixed to the new horizontal member 2 with a new hook bolt 7. Further, in the middle between the top support metal 1 and the top support metal 1, the bottom support metal 5 is supplementarily used.

  In the old roof Ra, the corrugated asbestos slate 13 is placed on the old horizontal member 11, the old hook bolt 17 is inserted into the through hole 15 provided at the top thereof, the hook is hung on the old horizontal member 11, and the male screw 25 on the upper end is placed. By tightening the old nut 21, the cap packing 23 underneath is pressed against the peripheral edge of the through hole 15. Since the old hook bolt 17 has passed for 35 to 40 years, the male screw 25 into which the old nut 21 is screwed is rusted. However, when the old hook bolt 17 was properly used, a tensile test was conducted at the Toyama Prefectural Industrial Technology Center. As shown in Table 1, the test results showed that the hook hook was bent and the hook hook It has been found that it has sufficient strength for “missing”.

  Among the descriptions in Table 1, “disengagement of the hook from the screw portion” is a state in which the split screw 31 is screwed onto the male screw 25 of the rusted old hook bolt 17 and tightened with the fastener 33 as will be described later. The tensile strength of the split screw 31 with respect to the male screw 25 was shown at the maximum load of “detachment of the hook bolt 17 from the split screw 31”, which was 2 to 3 times higher than originally expected, Rather, the hook sometimes broke first.

The old horizontal member 11 and the new horizontal member 2 are made of C-shaped steel, both of which have a cross-sectional opening downward, and the old horizontal member 11 is installed between the beams of the building. 2 is installed on a plurality of top support hardware 1, 1,... Arranged, and the top support hardware 1 is attached to the old hook bolt 17 that hangs on the old horizontal material 11. It will be arranged just above the horizontal member 11. However, since the support location is limited to the peak portion of the corrugated asbestos slate 13, as will be described later, the top support hardware 1 is supported by the warp portions 37a and 37a in the valley portion of the solid base directly below the old horizontal member 11. in addition to, the bottom support fittings 5 are located in the valleys.

  The top support hardware 1 includes a metal body 27 mounted on the wave of the corrugated asbestos slate 13, a combined body 29 that fits on the top, a split screw 31 that fits on the male screw 25 of the old hook bolt 17, and a fastener 33 for the split screw 31. And a new nut 34 to be screwed into the split screw 31.

  Among them, the hardware main body 27 is formed by bending a strip steel plate, with the upright portion 35 located at the top of the corrugated asbestos slate 13 as the center, and then descends along the mountain from side to side and along the adjacent mountain. The leg pieces 37 and 37 having a slightly warped shape are connected to each other. Since both the warped parts 37a and 37a are provided, not only the inconvenience of tilting the hardware body 27 is prevented, but also the leg pieces as described above. The pieces 37 are supported on the old horizontal member 11 as they are (without a space). In addition, since the raised ribs 38, 38 are formed along the center of the width of the leg pieces 37, 37, the support thereof surely reaches the upper end.

The upright portion 35 of the metal body 27 has a flat upper end and a bifurcated refraction shape. However, since the both warped portions 37a and 37a and the ribs 38 and 38 are provided, the standing portion 35 is stable to prevent the spread. A through slot 39 of the split screw 31 is provided in the upper end surface so as to extend in the lateral direction. Further, in the upper portion of the upright portion 35, notches 41 and 41 are provided at both side ends in the width direction of the through slot 39, the head 43 having a width narrower standing portion 35 is correspondingly formed. If it carries out like this, since it will be received by the notches 41 and 41, it will fit in the head 43 stably so that a coupling | bonding body 29 does not incline and it can slide. The slide of the combined body 29 is for adjusting the position of the central through hole 55 along the lower through groove hole 39, so that even if there is an unexpected error in the position of the male screw 25 of the hook bolt 17, A state in which the split screw 31 is passed through the through hole 55 and can be tightened with the new nut 34 is obtained.

The coupling body 29 is formed by bending a steel plate, and has an L-shaped lower end on both front and rear sides, with the center portion 47 having a cross-sectional shape of an inverted channel that fits the head 43 as described above. The refracting side pieces 49 and 49 are provided continuously. The new horizontal member 2 is sandwiched between the raised portions of the refraction side pieces 49 and 49 by being fitted to the fitting central portion 47, and is received by the base portion at the lower end thereof. In addition, upright pieces 53 and 53 that protrude deeply into the new horizontal member 2 are provided at the left and right ends of the fitting center portion 47, and a through hole 55 of the split screw 31 is provided at the center portion of the new nut 34. It is formed in the size to hang. In addition, the standing pieces 53 and 53 serve as ribs of the fitting central portion 47 in addition to stabilizing the coupling with the new horizontal member 2. The refraction side pieces 49 and 49 are provided with a pair of through holes 58 and 58 for the screws 57 and 57, respectively. Finally, screws are screwed into the new horizontal member 2 and fixed to the combined body 29. Is done.

The split screw 31 is a male and female screw type in which a female screw that is screwed to the male screw 25 of the old hook bolt 17 is formed on the inner peripheral surface of the cylinder, and a male screw that is screwed to the new nut 34 is formed on the outer peripheral surface. The lower end portion is provided with a split groove 59, and the fastener 33 reinforces the coupling with the male screw 25 of the old hook bolt 17 by narrowing the split screw 31 at the location of the split groove 59. .

The structure of the fastener 33 is a split cylinder that is fitted so as to be surrounded by the split screw 31, and fastening pieces 61, 62 that face the both ends of the split cylinder and that refract at the tip and engage as a fulcrum project. The bolts 63 and 62 are provided with through holes 65 of the bolts 63 and fastened with nuts 67 so that the square heads of the bolts 63 can be prevented from rotating on both sides of one of the clamps 61. Engaging edges 69, 69 that also serve as ribs are formed. Thereby, while adjusting the position of the combined body 29 by sliding, the split screw 31 is passed through the through hole 55 and the through groove hole 39 of the combined body 29, and the split screw 31 is attached to the male thread 25 of the old hook bolt 17 by the fastener 33. The new nut 34 is fastened to the split screw 31 on the coupling body 29.

In order to supplementarily receive the new horizontal member 2 at an intermediate portion between the top support metal 1 and the top support metal 1, a bottom support metal 5 is disposed in a valley portion of the corrugated asbestos slate 13. Its bottom support fittings 5, the new conjugates 29a of horizontal members 2 are used, it is the same shape as the coupling member 29 of the top support fittings 1, the center of the nut internal thread of the coupling member 29a 71 is welded and suspended, and a support bolt 73 is screwed into it, and a foot 75 as a head is attached to the bottom of the corrugated asbestos slate 13 at the lower end of the support bolt 73 (formerly horizontally mounted). It is easy to hit the contact area with the material 11 and is formed in a circular shape (round shape). Therefore, after laying the new horizontal member 2 with the top support hardware 1, in the valley portion of the corrugated asbestos slate 13, the joined body 29 a is inserted into the new horizontal member 2 from below , and the length of the support bolt 73 with the screw By adjusting the lower end foot 75 to the valley of the corrugated asbestos slate 13 by adjustment , the new horizontal member 2 can be directly supported on the strong old horizontal member 11.

  The combined body 29a is the same as the combined body 29 of the top support hardware 1, but the shape will be described. The center portion 47a of the cross-sectional shape of the reverse channel that fits into the opening of the new horizontal member 2 is the base body. As shown, L-shaped refracting side pieces 49a and 49a are connected to the lower ends of both sides of the channel shape. In relation to the new horizontal member 2, it is sandwiched between the L-shaped upright portions of the refraction side pieces 49a and 49a by being fitted into the fitting central portion 47a, and is received at the base at the lower end. Further, upright pieces 53a and 53a that protrude deeply into the new horizontal member 2 are provided at the left and right ends of the fitting central portion 47a, and a through hole 55a of the support bolt 73 is formed at the center. The refraction side pieces 49a and 49a are provided with through holes 58a and 58a for the screws 57a and 57a, respectively, for strengthening the coupling with the new horizontal member 2.

It is sectional drawing which shows the renovation roof by this invention. It is a perspective view which decomposes | disassembles and shows the principal part in the old roof with the existing renovated roof. It is a perspective view which shows the bottom part support metal object in the embodiment.

Explanation of symbols

Ra Old roof Rb New roof 1 Top support hardware 2 New horizontal member 3 New roof plate 5 Bottom support metal 11 Old horizontal material 13 Corrugated asbestos slate 17 Old hook bolt 21 Old nut 23 Cap packing 25 Male screw 27 Hardware main body 29 Body 29a Combined body 31 Split screw 33 Fastener
34 New nut 35 Standing portion 37 Leg piece 37a Warp portion 39 Through groove hole 43 Head 47 Fitting center portion 49 Refraction side piece 53 Standing piece 55 Through hole 61, 62 Tightening piece 63 Bolt 67 Nut 71 Female screw 73 Support bolt 75 feet

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