Question: with your colleagues or with myself. Problem 1 . Four L 2 2 1 8 ( A 3 6 steel ) angles are welded together

with your colleagues or with myself.
Problem 1. Four L 2218(A36 steel) angles are welded together to form the cross section shown.
These built-up members are struts of varying length and are to be installed along the top chord of a roof
truss to improve drainage. The effective length of the longest strut is (KL)=2ft. Use the SSRC parabola
if the buckling is inelastic.
(a) If the struts are designed on the basis of flexural buckling, determine Pcr.
(b) What is the actual mode of buckling and the true value of Paa?
with your colleagues or with myself. Problem 1 .

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