Discussion
The effective length (l) of a compression steel member of actual length (L), effectively held in position and restrained against rotation at one end and restrained against rotation at the other end but not held in position, as per IS:800-2007 is:
Answer: B
IS 800:2007 gives the effective length of a compression member from its end conditions. For a member effectively held in position and restrained against rotation at one end, and restrained against rotation but not held in position at the other end (a sway, or translation allowed, with rotation fixed), the effective length is 1.2 L. The factor 0.65 L is for both ends held in position and fixed against rotation, 1.5 L is for one end held in position and restrained against rotation with the other held but not restrained, and 2.0 L is for the case of one end fixed and the other free.
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