ARCHED DOUBLE-CANTILEVER SLAB-VAULT Russian patent published in 2002 - IPC

FIELD: civil engineering, applicable in roofing of industrial and civil multi-purpose buildings, as well as in agricultural production buildings and transport structures. SUBSTANCE: the slab-vault has arched stiffening plates of a circular configuration on the lower faces, and on the upper faces they conjugate to the thin vault of a parabolic configuration, stressed reinforcement that is positioned in the arched stiffening plates horizontally and fixed in height on the rigid frames of the transverse bearing ribs, and then it is positioned strictly on the stretched faces of the rectilinear cantilever ribs, the compressed faces of the latters are combined by a flat horizontal reinforced flange with an inner surface of an elliptic configuration. EFFECT: enhanced carrying capacity, stiffness, crack resistance and durability, at the same time reduced specific consumption of materials of large-sized built-up slab-vaults "per span". 5 cl, 4 dwg