FIELD: construction. SUBSTANCE: building block is rectangular in cross-section and provided with sockets in its ends and with vertical slots communicating with sockets. Slots are trapezoidal in cross-section with base located on end face and expanded with grade of 1:1.5 towards block upper face. Sockets are rectangular in cross-section and chamfered. EFFECT: reliable slinging in dismantling, transportation and mounting building members of large mass and extended capabilities of their manufacture. 2 dwg
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