SEMI-CIRCULAR FORMED HOLLOWED SECTION Russian patent published in 2018 - IPC E04C3/07 

FIELD: construction.

SUBSTANCE: proposed invention relates to construction and can be used as rod elements at development of bearing structures of buildings and structures of various purposes. In a particular case, these can be rod elements of trusses belts of run-through and non-sprinkling coatings. Said technical result is achieved by the fact that in a curved section of a closed cross-section, a round outline with a shape of workpiece bent edges docked together along the entire length, section has the shape of a semicircle, the height (radius) of which is 1.1766 times larger than the filament size.

EFFECT: technical result of the proposed solution is equal stability (equistability) of the formed hollowed sections from the plane and in the plane of the load-bearing construction, an increase in the bearing capacity, a reduction in the construction height.

1 cl, 5 dwg