| 摘要 |
FIELD: building, particularly building blocks adapted to erect walls of low buildings and building structures. ^ SUBSTANCE: building block comprises engagement means and is made as monolithic body having cavity opened into block surface. The engagement body is made as tubular member. Central part of tubular member has length enough for tubular member grasping by user's hand or by engagement means of vehicle. The tubular member passes through above cavity and is parallel to block base. Remainder part of tubular member is built in block body, tubular member ends passes through one side surfaces of the block and are closed. Tubular member is made of transparent material and filled with liquid containing air bubble submersed in liquid. Tubular member may be filled with non-freezable liquid and surface thereof may be provided with marks. Tubular member ends passing through side surface may have nipples. ^ EFFECT: increased operational reliability along with simplified production. ^ 4 cl, 1 dwg
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