Theory of Structures - Section 1 (3)

Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as

For calculating the allowable stress of long columns. The empirical formula  , is known as

A material is said to be perfectly elastic if

The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is

A rolled steel joist is simply supported at its ends and carries a uniformly distributed load which causes a maximum deflection of 10 mm and slope at the ends of 0.002 radian. The length of the joist will be,

The ratio of maximum shear stress to average shear stress of a circular beam, is

If E, N, K and 1/m are modulus of elasticity, modulus of rigidity. Bulk modulus and Poisson ratio of the material, the following relationship holds good