ROOF Russian patent published in 1994 - IPC

FIELD: construction. SUBSTANCE: roof of ceramic tiles with nailless and free from ties fastening having side attachment members in form of longitudinal grooves contacting each other by clinch joint, and transverse attachment members in form of recesses in tile ribs and thrust bars of subpurlin contacting each other and connecting bars in groove-and-tongue joint. The stiffeners height exceeds tile thickness and have bevel in upper part. Subpurlin thrust bars are higher than common bars by tile thickness (without ribs) and are mandatory laid as subpurlin lower member at roof overhang, and if need be, every several rows on roof slope. EFFECT: higher efficiency. 3 cl, 8 dwg