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Skew lift with coincident joints

Skew lift with coincident joints

Skew lift with coincident joints

(OP)
Hi,
I have modelled a frame in SACS and performed a lift analysis with two coincident hook points, one fixed and another free in vertical direction for application of 25% load to create skew loads.. but i find that members are failing due to twist ( warping ) the same structure is passing with skew load factor of 1.5 but fails when skew distribution is done for diagonal slings ...why??... what do you think is the solution ???

RE: Skew lift with coincident joints

We need a better explanation, a sketch would help.

Michael.
"Science adjusts its views based on what's observed. Faith is the denial of observation so that belief can be preserved." ~ Tim Minchin

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