FORMS FOR CONCRETING OF MONOLITHIC CEILING Russian patent published in 2003 - IPC

FIELD: construction engineering, particularly, forms; applicable in forms design in erection of buildings and structures from cast integral reinforced concrete. SUBSTANCE: working deck of forms is made with camber f. Value of working deck camber is determined with consideration of concrete shrinkage and equaling, at least 1.3 L/200. Working deck is located on spacers installed on carrying beams and made in form of surface whose cross-section is curved in shape. Spacers are installed at interval of not in excess of b_i. Working deck may be made in form of composed surface from cylinders and sphere, or cylindrical surface, or elliptical cylinder, or spherical surface. EFFECT: provided monolithic ceiling with higher carrying ability due to camber, reduced shrinkage deformation of concrete in ceiling, elimination of cracking in ceiling after removal of forms. 5 cl, 8 dwg