List of top Building Construction and Structural systems Questions on Principles of strength of materials

A 5 m long Aluminium tie rod of cross-section 0.20 m × 0.04 m is subjected to a tensile force induced by its self-weight of 21.20 kg/m considering gravitational acceleration of 10 \(m/s^2\). If tensile Young's modulus of Aluminium is 70,000 MPa, the maximum tensile strain in the rod is______   \(\times \,10^{-6}\) (rounded off to two decimal places).

A steel wire of 5.65 mm diameter and 50 m length is used for a hoisting crane. The wire is used to vertically lift a weight of 200 kg attached to its lowest end. Assume the Young's Modulus of Elasticity of Steel as \(2 \times 10^5 \, \text{N/mm}^2\) and gravitational acceleration as \(10 \, \text{m/sec}^2\). The elongation of the steel wire (in mm) will be ............ [rounded off to two decimal places].