FIELD: construction.
SUBSTANCE: bar module of an off-measurement length is formed by joining the bars of an exact length. The Bars of the exact length are hollow-centered and built-up, having trihedral locks at one or both ends, installed inside of the hollow bar, wherein the base of the trihedral is located from below or from above.
EFFECT: bar weight reduction at provision of its required strength.
8 dwg
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