SPATIAL COVER FROM CROSSING SYSTEM Russian patent published in 2015 - IPC E04B7/14 

FIELD: construction.

SUBSTANCE: spatial cover from a crossing system rested at corners comprises internal trusses and contour trusses of equal height with rod elements of near-support panels of lower belts, equipped with reversible devices from tightening pins and plate springs for adjustment of support units by pre-stressing with redistribution of reactive and span torques of contour bearing elements of the crossing system. Each rod element comprises a single barrel part and a pair of support parts. The support one is made in the form of a shell of sleeve shape, the bottom of which is a board with hinged parts for connection with the support structure or the lower belt of the contour truss. Nozzles to let through tightening pins are fixed on corners of side faces of the shell of the support part with the help of two diaphragms. On the corner sections of the same faces in the gaps between boards and nozzles there are slots made for placement of end brackets of the barrel part. Nozzles to let through tightening pins are fixed on brackets with the help of two diaphragms.

EFFECT: reduction of material with achievement of identical values of belt forces of internal and contour trusses.

23 dwg, 2 tbl