Steel

Подпись: Copyright © Marcel Dekker, Inc. All rights reserved.The major advantages of steel sections in formwork are the ability of steel to form longer spans and its indefinite potential for reuse when handled with reasonable care. Steel sections are used in the fabrication of different formwork components, namely: (1) steel panel forms, (2) horizontal and vertical shores, (3) steel pan and dome components used for joist and waffle slabs, and (4) steel pipes for formwork bracing. Other heavy forms and formwork are also made of steel, such as bridge formwork. Steel is used for form­work when other materials are impossible to use because of their low strength. Steel forms are typically patented, and allowable loads are generally published by the manufacturers. Figure 1.7 il­lustrates the use of steel as formwork materials