FLAT-OVAL CURVED-CLOSED PROFILE Russian patent published in 2018 - IPC E04C3/07 

FIELD: construction.

SUBSTANCE: proposed technical solution relates to the field of construction and can be used as rod elements in the development of load-bearing structures of buildings and structures of various purposes. In the particular case, these can be the rod elements of the chords of run-through and non-run-through coatings. Technical result is achieved by fact that in curved profile of closed section with joint in the middle of one of larger faces, where each part of joined face has continuation in form of I-shaped rib, profile has flat-oval shape with smaller dimension five times shorter than size of I-shaped ribs and six times shorter than larger one.

EFFECT: technical result of proposed solution is the same stability (uniform stability) of curved-closed profiles from plane and in plane of supporting structure, as well as reduction of metal hardening and stress concentration.

1 cl, 5 dwg