LSD versus LRFD
LSD versus LRFD
(OP)
Are these two completely different methods or are they just two different names for the same thing since LRFD is American and LSD is Canadian?
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RE: LSD versus LRFD
Generally speaking, in limit state design the nominal load effect is factored up, to account for uncertainitly in the anticipated range of loadings, and the nominal capacity is factored down, to account for uncertainty in material stength or behaviour.
This differs from Allowable Stress Design (also called the Working Stress Method) in which the unfactored stress, calculated from tthe most adverse combination of loads, must not exceed some permissable stress, which is equal to ultimate stress divided by some safety factor.
RE: LSD versus LRFD
But are the calculations very similar? I thought they were basically the same..?
RE: LSD versus LRFD
DBD
RE: LSD versus LRFD
Hg
Eng-Tips guidelines: FAQ731-376