METHOD TO ASSEMBLE SECTIONALLY BROKEN ARC Russian patent published in 2013 - IPC E04B1/32 

FIELD: construction.

SUBSTANCE: method to assemble a sectionally broken arc includes connection of arc elements in units on bolts or with welding. Arc elements are made with cross section of two channels on planks. Some panels of the arc are assembled with external orientation of channel shelves, the other ones - with the internal one. The distance between walls of the adjacent panel channels is accepted as equal. Then the adjacent panels of the arc are overlapped with walls of channels above each other and in levelling holes by the contour of arc breaking angles are connected to each other. Afterwards, the arc assembly is completed with symmetrical or asymmetrical orientation of panels in semi-arcs.

EFFECT: simplified assembly.

2 cl, 4 dwg