BLOCK-TRUSS OF COVERING Russian patent published in 1998 - IPC

FIELD: construction engineering. SUBSTANCE: in block-truss of covering, upper edges of plates in upper girth are located longitudinally and resting on diaphragms, and extreme bars of lower girth are directly connected with upper girth in supporting units of structure. Longitudinal orientation of upper edges of plates in upper girth with resting on diaphragms transmits forces to units of upper girth to bypass main lower ribs of plates. Thus changed are schemes of conjugating upper and lower girths on supports: extreme bars of lower girth are directly connected with upper girth. EFFECT: high efficiency. 3 dwg