Improvements in and relating to the construction of arched roofs made of corrugated sheet-iron

摘要

172,328. Debongnie, E. E. Dec. 4, 1920, [Convention date]. Roofs; roofing, sheetmetal. - Arched corrugated sheet-iron roofing is supported on longitudinal girders 4 bearing on cross trusses 21, which extend at each side beyond the arch and rest on the pillars or walls. The girders and supports may be made of reinforced concrete, and the girders 4 may project above or below the cross trusses. Skylights and shutters may be inserted in the girders 4 and parts 5. In a modification, the central portion of the truss 21 is omitted, the parts 5 then acting as brackets. Alternatively, the transverse trusses and roofing may be carried by the longitudinal girders 4 which may extend the whole length of the building without any intermediate. supports.