For the following problem, assume the modulus of elasticity for steel to be 30,000,000 psi (207 000) and the proportional limit to be 34,000 psi (234 MPa). Refer to Appendices F or G for other materials.
Calculate the stress developed in the following members that are each subjected to an axial tensile load of 70 kN:
(a) steel bar, 25 mm by 50 mm
(b) 150-mm-diameter wood post (use the given diameter)
(c) 25-mm-diameter steel tie rod
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