MESHY WOODEN SHELL ARCH Russian patent published in 2011 - IPC E04B1/32 

FIELD: construction.

SUBSTANCE: shell arch comprises longitudinal and transverse elements connected to each other, made of a rectangular section bar, which are formed with a mesh of through elements and elements running in longitudinal and transverse directions. Ends of running elements are arranged as adjacent to the middle of a face of through longitudinal or transverse elements. At the same time the element running in longitudinal direction adjoins with its rectangular end to a face of a transverse through element, and element running in transverse direction adjoins a face of the longitudinal through element with a chamfered end. In each of the alternating units of the mesh two running elements are connected to a through element with the help of at least two rod metal braces. On a side face of running elements there are mounting slots provided, and internodal links are installed in coupling units.

EFFECT: increased strength and stability of a shell arch.

2 cl, 5 dwg