FIELD: construction.
SUBSTANCE: profile comprises an extended strip of a sheet metal. The profile is made with a lower shelf, a hollow upper reinforcing capsule-like expansion and a rib stretching upwards from the shelf to the expansion. The shelf is arranged in the horizontal plane, the rib - in the vertical plane. The strip of the sheet metal has two longitudinally stretching extreme end zones. Extreme end zones are arranged vertically, are fixed to the central area of the strip that forms a rib section, and form the area of the double layer of the rib. Extreme end zones of the strip are arranged vertically with the interval from each other. The section of the central area of the strip, which forms the rib section, is made in the form of a single layer of the material. The central area of the strip is formed with a pair of shifts arranged vertically with an interval. Shifts occupy a larger part of the single rib layer in the nominal medium plane of the profile, which divides the shelf and the expansion in half.
EFFECT: minimisation of side eccentricity.
3 cl, 2 dwg
