ROOF Russian patent published in 2010 - IPC E04B7/02 

FIELD: construction.

SUBSTANCE: roof consists of reinforced concrete panels, where a steel sheet is arranged at the angle to their base. Lower panels have ledge, reinforced concrete walls of which are tightly connected to front reinforced concrete wall. Ledge of one lower panel is arranged in groove of other lower panel. Parallel reinforced concrete walls of upper transverse panel with bent sides of strip have cuts of various size. End of upper longitudinal panel is fixed to cut of smaller size of wall. Front walls of two neighbouring lower panels are arranged between walls of upper transverse panel. Cut of upper size of upper transverse panel is arranged at the end of upper longitudinal panel.

EFFECT: reduced labour expenses in manufacturing of roof.

7 dwg