Solution Found!
Members AB and BC of the truss shown are made of the same
Chapter 1, Problem 1.40(choose chapter or problem)
Members AB and BC of the truss shown are made of the same alloy. It is known that a 20-mm-square bar of the same alloy was tested to failure and that an ultimate load of 120 kN was re-corded. If a factor of safety of 3.2 is to be achieved for both bars, determine the required cross-sectional area of (a) bar AB, (b) bar AC.
Questions & Answers
QUESTION:
Members AB and BC of the truss shown are made of the same alloy. It is known that a 20-mm-square bar of the same alloy was tested to failure and that an ultimate load of 120 kN was re-corded. If a factor of safety of 3.2 is to be achieved for both bars, determine the required cross-sectional area of (a) bar AB, (b) bar AC.
ANSWER:
Step 1 of 14
We have to determine the cross sectional area of members AB and AC for given allowable tensile stresses. This is a determinate truss, so using the methods of moments and joints we will find the axial forces in these members and thus required stresses.