FIELD: civil engineering. SUBSTANCE: wall enclosure member has thin-walled plate with vertical stiffness ribs. In so doing, the member is provided with support cantilevered projections immovably connected to the vertical stiffness ribs on edges of the plate. Projection height is equal to half height of the member. The projections are located perpendicular to the plate surface, and is displaced inward the plate or outward its vertical overall edges, and respectively skew-symmetrically or symmetrically about the vertical member axis to form steps on the member corners, and stiffness diagrams of closed cross section in the enclosure. Besides, the member is provided with horizontal ribs fixed in vertical stiffness ribs, and made of anticeltized wood bars. EFFECT: high stability. 7 cl, 11 dwg
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