(a) The lightest W10 section using Load And Resistance Factor Design (LRFD) method.

Question

H.W4: a- A copper bar is 900 mm long and circular in section. It consists of 200 mm long bar of 40 mm diameter, 500 mm long bar of 15 mm diameter and 200 mm long bar of 30 mm diameter. If the bar is subjected to a tensile load of 60 kN, find the total extension of the bar. Take E for the bar material as 100 GPa. b- A stepped bar ABCD consists of three parts AB, BC and CD such that AB is 300 mm long and 20 mm diameter, BC is 400 mm long and 30 mm diameter and CD is 200 mm long and 40 mm diameter. It was observed that the stepped bar undergoes a deformation of 0.42 mm, when it was subjected to a compressive load P. Find the value of P, if E = 200 GPa.

Answer 1

Question

Chapter 6, Problem 6.8.3P

To determine

(a)

The lightest W10 section using Load And Resistance Factor Design (LRFD) method.

To determine

(b)

The lightest W10 section using Allowed Strength Design (ASD) method

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