End ribs
The plate is laid with one end rib on the parapet of the external longitudinal wall of the building, and the other end rib on the side of the water column so that one of the longitudinal ribs is directed upward. The next plate is laid in the same way, but with the calculation so that the extreme longitudinal rib goes beyond the longitudinal rib directed upward. The end ribs are shifted relative to each other one step. They play the role of supporting diaphragms, providing the stiffness of the plate as a whole. The use of these plates provides an economic effect compared to similar slabs of rhublone roofs. The effect is achieved due to the possibility of significant enlargement of the plates due to their width and the absence of straps, which leads to a decrease in the number of installation units. The absence of the need for additional sealing of the junction of the joints reduces labor costs when installing a rupture roof, and the execution of the thin -walled structure of the plate reduces its cost as a result of a reduction in the mass. Experimental design of the industrial rivel roof of the described type described in relation to the typical project of the housing of the series 111-26-13, showed that the consumption of concrete in the alcohol version was 37.54 versus 44.95 m3 in rolled, or 83 %, while maintaining the consumption of reinforcement. Thanks to the enlargement of the size of the roofing panels, the steel consumption on mortgage parts decreased almost 10 times.
Collective reinforced concrete panels are made of 400 brand concrete, 5.4-8.1 m long; 3 m wide, 300 mm high. Stressed reinforcement of class at-v. The joints are closed with reinforced concrete overlines and skating lining of concrete brand 400.In order to increase the operational reliability of the roof and simplify its design in relation to the rolled roofs of the MNIITEP, he developed a roof with warm attic under the roofing space. The design of the roof belongs to the type of reinforced concrete roofs of a separate structure with an internal airspace used as a ventilation chamber, where exhaust ventilation channels are suitable for a residential building.