TRAPEZOID SHAPED PIPE Russian patent published in 2019 - IPC E04C3/32 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular to the used as the building structures rod elements trapezoid shaped tube. Trapezoid tube includes two horizontal faces in the form of a smaller base and a larger base of an isosceles trapezoid in cross section, two oblique faces in the form of the same trapezoid lateral sides and a welded joint in the middle of the smaller flange with beading, bent inwards of the tubular profile, which, after the longitudinal seam welding, form the vertical edge. In the rod element with the profile overall dimensions ratio of 1/1 and its flanges aspect ratio of the 0.6/1 the edge has a height equal to 0.0751 of one of the dimensions, and in the beam element with the same profile ratios the edge has a height equal to 0.2768 of one of the dimensions.

EFFECT: technical result of the invention is the same stability from the plane and in the trapezoid tube plane.

1 cl, 5 dwg