CEILING SLAB Russian patent published in 1996 - IPC

FIELD: civil engineering. SUBSTANCE: ceiling slab has bearing frame of contour and intermediate beams. Reinforcing bars are secured to the frame on its both sides. The reinforcing bars are covered with concrete to generate cavities inside the slab. Slab face if finished. Concrete form/insulating members looking like sandwiches are placed in the cavities. The members have rigid waterproof layers coming in contact with concrete layers. EFFECT: high productivity. 3 cl, 1 dwg