MOVABLE FORMS FOR CONCRETING FLOORS Russian patent published in 1995 - IPC

FIELD: construction. SUBSTANCE: movable forms for concreting floors have parallel trusses adjustable in height consisting of longitudinal upper and lower beams interconnected by means of struts and vertical posts. Attached to upper longitudinal beams are cross beams of H-shaped section made of two channels whose walls are interconnected in symmetry axis plane of channel sections by means of partition to form two symmetrical troughs. Installed in troughs are bars to which flat working boarding is secured. Channel flanges have thickening directed inward and serving for fastening of cross beams to longitudinal beams. Relation between height of cross beam section and width of central partition is taken within 3.4-4.1. Vertical posts are telescopic and provided with lower and upper jacks. EFFECT: highly facilitated manufacture, strong and durable in service. 5 cl, 10 dwg