FIELD: construction.
SUBSTANCE: invention relates to floor beams and coatings of buildings. Proposed beam comprises stacked boards and thin steel sheet tension zone to absorb tensile forces. Connection of boards and steel sheet into package is made by means of nails. In the support zones the boards are connected by nails along the whole height of the beam, and in the upper zone the nails are arranged evenly along the beam length. Besides, in the support zones the beam of boards is tightened along the height using coupling bolts. Beam from boards is tightened by means of diagonal trusses built into it, at that, the diagonal trusses are located in the support zones and are formed from the transverse vertical coupling bolts and the longitudinal coupling bolts inclined to the middle of the span, connected to each other by means of transverse support elements (6).
EFFECT: higher strength of the beam.
5 cl, 4 dwg
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