Fixing structure of roof ridge capping steel plates

Abstract

This invention provides a fixing structure for roof ridge capping steel plates that can be applied not only to the repair of scattered ridge capping steel plates in existing buildings, but also to roof weight reduction seismic retrofitting and new roof construction. [Solution] This method is characterized by using artificial wood for the base purlin board and fastening waterproof gasketed pan tap screws to the artificial wood from the top surface of the ridge capping steel plate. Compared to raw wood such as cedar, which is susceptible to deterioration and corrosion, artificial wood, which is of superior quality, is used for the base purlin board, and by tightening waterproof gasketed pan tap screws (stainless steel) from the top surface of the ridge capping steel plate that covers it, secure fastening can be achieved, thus reducing the risk of the ridge capping steel plate being blown away by typhoons and strong winds. Current general fastening structures use raw wood such as cedar as the base for fixing the ridge capping steel plate, which is less durable, and the nails used to fix the steel plate to this purlin board lose their holding power over time. Furthermore, because the nails are driven in from the side, the method is not reliable and there is a high risk of the ridge capping steel plate being blown away.

Description

Technical Field

[0001] The present invention relates to the fixing of building wrapping steel plates such as slate roofs and metal roofs. By using artificial wood as the base material and fastening and fixing with screws from the upper surface of the covered building wrapping steel plate, it relates to a fixing structure for reducing the scattering of the building wrapping steel plate.

Background Art

[0002] For the steel plate covering the ridge of the roof (generally called "building wrapping steel plate"), a fixing structure is widely adopted in which a natural wood board (generally called "through plate") is used as the base material, and round nails or screw nails are driven in with a hammer from the side surface of the building wrapping steel plate for fastening. However, the applicant, as a first-class architect, has grasped from a large number of on-site inspections and experience in scattering repair work that this fixing structure has problems leading to the scattering of the building wrapping steel plate.

Summary of the Invention

Problems to be Solved by the Invention

[0003] (1) The natural through plate gradually corrodes due to aging deterioration and rainwater intrusion, resulting in a decrease in the nail holding force, loosening, and then falling out, which causes the building wrapping steel plate to scatter due to typhoons, gusts of wind, etc. The scattered steel plate is sharp and may cause serious accidents such as vehicle damage and contact with pedestrians as it flutters in the air. (2) The fastening of nails and the like with a hammer from the side surface of the conventional building wrapping steel plate has an unclear aiming position, and since the thickness of the natural material is about 12 - 13 mm, which is thin, missing hits and rehits occur, causing wood splitting, and it has been difficult to securely fix the building wrapping steel plate.

Means for Solving the Problems

[0004] The present invention uses artificial wood (a mixed material of wood powder and synthetic resin, etc.) as the through plate instead of the natural wood board, and has a structure in which the building wrapping steel plate covered on this through plate is fastened and fixed with screws from the upper surface. • By using artificial wood (approximately 11-15 mm thick) suitable for roofing materials for the underlayment boards, resistance to deterioration over time and corrosion caused by rainwater can be maintained, and the screw holding power can be preserved over the long term. • To secure the ridge capping steel plates, use pan-head tap screws (stainless steel) with waterproof gaskets, fastening them with an electric drill at intervals of 60 cm or less. This makes the work easier and is expected to improve work efficiency. Furthermore, by fastening and securing the ridge capping steel plate with screws from the top surface, it becomes easier to confirm the position of the purlin board, reducing the likelihood of mis-drilling or wood splitting, and thus improving construction quality. [Effects of the Invention]

[0005] • Artificial wood purlins have resistance to aging and corrosion, and can maintain stable screw holding power over a long period of time. By fastening and securing the ridge capping steel plate with screws from the top surface, reliable construction quality can be ensured, and work efficiency can be improved. • It can reduce the scattering of ridge capping steel plates due to typhoons, gusts of wind, etc. The fixing structure of this invention can be applied not only to the repair of scattered steel plates covering the ridge of existing buildings, but also to roof weight reduction and seismic retrofitting, as well as to new roof construction. [Brief explanation of the drawing]

[0006] [Figure 1] Diagram of the ridge capping steel plate fixing structure of the present invention [Figure 2] Conventional diagram of the ridge capping steel plate fixing structure [Figure 3] Figures 1 and 2: Comparison diagram of fixed structures [Figure 4] No corrections. Example of repair work (2010 gust of wind repair) [Figure 5] No corrections. Examples of repair work (2019 typhoon repairs)

[0007] An example of repair work is as follows: (1) The scattered ridge capping steel plates were straightened and reused. (2) Remove all existing corroded or damaged cedar planks. (3) Apply modified silicone to the cracks in the existing slate boards. (4) Install the new purlin boards made of artificial wood (11 mm thick, 90 mm wide), drill lead holes at intervals of 60 cm or less to prevent the slate roofing material from cracking, and secure them with long screws. (5) Place the ridge capping steel plate over the top surface and secure it by fastening waterproof gasket pan tap screws (stainless steel) with an electric drill at intervals of no more than 60 cm from the top surface. (6) Fill all joints between steel plates with modified silicone to ensure waterproofing. Two examples of repair work carried out by the applicant are shown in Figures 4 and 5. Figure 4: An example of repair in 2010 where fixing nails that were scattered by a strong gust of wind were replaced with screws. Figure 5: An example of a partial fixing structure using artificial wood for the purlin boards of the ridge capping steel plates that were scattered by a typhoon in 2019. This repair revealed that fastening the ridge capping steel plates with screws from the side was difficult to work with, so a fixing structure using screws from the top surface of the steel plates was conceived.

Claims

[Claim 1] A new method for preventing the scattering of roof ridge capping steel sheets, characterized by using artificial wood instead of conventional cedar boards for the underlayment purlins, and tightening waterproof gasket-equipped pan tap screws from the top surface instead of nailing from the sides of the steel sheets.

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