Shear calculation for round pipe

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SUMMARY

The discussion focuses on the shear calculation for a round pipe measuring 200mm outer diameter (OD) and 160mm inner diameter (ID), which is welded to a steel structure weighing 7500Kg. The pipe is 100mm long and has a 12mm plate with a 250mm diameter welded at its end. The main concern is whether the pipe can safely support the weight during a lift with a crane, adhering to the standard safety requirement of a 2.5:1 safety factor. Participants recommend consulting a qualified engineer to evaluate the lifting plans and ensure structural integrity.

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Bernard Dubois
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Can someone please help me.

I have a pipe 200mmOD x 160mmID welded to a Steel structure
The pipe is 100mm long with a 12mm plate x 250Dia welded at the end of the pipe.
The steel structure weighs 7500Kg
I have to lift the structure with a crane. The crane has a cable with a loop which can fit around the pipe.

question:

Will the pipe be strong enough given the standard safety lifting requirement is 2.5:1

Thanks
 
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It's not clear from your description how this lift is to be accomplished. Is there one pipe or more than one pipe? What is the size of the structure being lifted? Where are the pipe or pipes located on the structure with respect to the c.g. of the structure?

IMO, you should engage an engineer to review your lift plans.
 

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