SHUTTER FOR CONCRETING FLOORS Russian patent published in 1997 - IPC

FIELD: civil engineering. SUBSTANCE: shutter has parallel frames comprising vertical props interconnected through diagonal and horizontal struts, cross braces are used to join adjacent frames. Beams with flat floor are installed on the frames. Each beam is made in the form of two channels with shelves rigidly interconnected through partitions to form symmetric troughs used to place the beams fastening the flat floor. Diagonal and horizontal struts are made of thin-wall hollow profile in the form of cylindrical shell with two symmetrically placed U-shaped recess. Vertical props are cylindrical and have lengthwise outer ledges and internal grooves. Cross braces are secured to the horizontal struts through plate-type brackets installed in strut recesses. EFFECT: higher rigidity and strength. 11 cl, 9 dwg