WORK METHOD FOR HOLLOW SLAB WITH QUADRANGLE FORM, AND HOLLOW SLAB BY QUADRANGLE FORM

摘要

PROBLEM TO BE SOLVED: To increase a shear resistance of a hollow slab by positioning quadrangle forms adequately and performing work by appropriate selection.;SOLUTION: By a spiral duct using a galvanized sheet iron or an aluminum alloy plate as a raw material, for example, a horizontally long, a vertically long or an equally long quadrangle form 1 is formed. And corner portions are formed at the four corners of the quadrangle form 1, and the corner portion is made to a R corner having a radius of curvature of 5 mm to 100 mm. And when building a hollow slab, the quadrangle forms 1 are raised in vertical direction and arranged with proper spacing provided in horizontal direction, and outer sides of the quadrangle forms 1 are filled with cement milk, and then the quadrangle forms 1 are removed. By doing this, the shear resistance of a hollow slab can be increased.;COPYRIGHT: (C)2001,JPO