In case of a simply supported I-section beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is
m_{1} and m_{2} are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if
If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t attains maximum shear stress f_{s} the ratio of inner diameter to outer diameter, is `17/64 F_s/N`
The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span ; flexural rigidity being EI, is
A simply supported beam A carries a point load at its midspan. An other identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be