METAL ROOF AND METHOD OF ITS PRODUCTION Russian patent published in 1997 - IPC

FIELD: construction. SUBSTANCE: roof is made of coiled stainless thin-sheet steel. Roof members may be made of any, suitable for the purpose, dimensions from strips of coiled stainless steel, lap welded to obtain the required width, for instance, by the seam welding machine ensuring air-tightness. Members are assembled by welding by sides folded along water flow vertically upward. Joints located across the water flow are welded with side edges bent through angle larger than, or equal to 135 deg and member bent through angle of 45 deg and less overlapping the previous side above water flow. Roof members are attached to furring by means of cleats located between vertical sides of two neighboring members and welded by edges of bent sides together with welding of side edges of neighboring members. Internal sections of roof members are attached to furring by plates welded beforehand to furring through holes drilled in members above the plates. EFFECT: higher efficiency. 2 cl, 6 dwg