Question: 1. A 4-ft-long square ASTM A36 steel bar, 2 in. by 2 in., is subjected to an axial tensile load of 64,000 lb parallel to its length. Calculate the dimensional changes in the bar's lateral and longitudinal dimensions
2. A concrete test cylinder is 150 mm in diameter and 300 mm in length. During an axial compression test, the diameter increased by 0.0125 mm and the length decreased by 0.275 mm. Compute the value of Poisson's ratio and the magnitude of the compressive load. The concrete has an ultimate compressive strength of 21.0 MPa. 11.33 A 14-in.-long steel rod, 1 1 2 in diameter, was subjected to an axial tensile load of 60,000 lb in a universal testing machine. It was observed that a gage length of 2 in. near the midpoint of the rod increased in length by 0.0023 in. and the rod diameter decreased by 0.00043 in. Assume the steel proportional limit to be 34,000 psi. Calculate the modulus of elasticity and Poisson's ratio for the steel.