Discussion
The expression for effective length (le) of a compression member can be obtained as le = kl. Here, 'k' indicates ______, where 'l' is the unsupported length of the compression member.
Answer: D
The effective length of a compression member is \(l_e = k\,l\), where l is the unsupported length and k is the effective length ratio (the factor that depends on the end restraints). For example k = 2 for a column fixed at one end and free at the other and k = 1 for pin-ended. It is not a clear distance or the unsupported length itself, which is l, and calling it just a constant ignores the meaning in the code, which is the ratio of effective to actual length.
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