Casting beds are made to facilitate casting of precast post tensioned girders or I beams in parallel to construction of other components of bridges like piles and pile caps, piers, pier caps pedestals over them etc

A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.

• Calculate the bending moment to be opposed by the beam with respect to loads and span of the beam. Let the maximum bending moment to be opposed is M, and maximum shear force is F.
• Calculate the suitable measure of modulus of section by the below given formula.
• Select a rolled steel section.