| 摘要 |
FIELD: construction engineering. SUBSTANCE: roof covering can be used in buildings having intermediate decking placed over main beams of channel cross-section Z-like cross-section. Offered here is cantilever stop of countertwisting which is of T-shape. End of stop flange catches wing of upper flange of main beam, whereas other end of stop flange rests against intermediate decking. Installed in lower end of stop upright is pressing-off screw which rests against lower part of main beam wall. At rotation of screw, main beam turns in direction which is opposite to twisting direction. Aforesaid embodiment of invention can be used in construction of roof covering and in liquidation of emergency condition of main beams. EFFECT: higher efficiency. 1 dwg
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