SANDWICH BUILDING PANEL AND METHOD FOR ITS PRODUCTION Russian patent published in 1995 - IPC

FIELD: construction. SUBSTANCE: ends of branch pipes have quick-acting joint in form of socket slots for locking of reinforcing bars that is ensured by flexible springy walls of slots. Special bosses replace known gaskets to form reinforcement protective layer. Labor consuming operation of pulling reinforcing bars through holes in ends of branch pipes is replaced by simple and quick operation of direct connection of branch pipe to ready reinforcing fabric. Operation for installation of known gaskets for protective layer is excluded. EFFECT: simplified design of joint of branch pipes and reinforcement of external layers, and reduced labor input for manufacture of spatial reinforcing cage in course of panel formation. 5 cl, 2 dwg