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Composite HSS Design Properties

Composite HSS Design Properties

Composite HSS Design Properties

(OP)
Does anyone know a good reference for transformed section properties of a concrete filled HSS?  I know the LRFD manual gives design values for compressive loads.  Any help would be greatly appreciated.  Thanks in advance.

RE: Composite HSS Design Properties

Round or rectangular?

RE: Composite HSS Design Properties

(OP)
Rectangular..

RE: Composite HSS Design Properties

Unless somebody else has a better option, I have two ideas:

1. Look in the AISC DG on composite columns.  I don't know if those are included, but they might be.

2. The AISC Manual gives tables of phiPn as you mentioned.  At the bottom of the table is a value called Pe(KL)^2/10^4.  I think you can use Pe=pi^2*EI/(KL)^2 to back out the moment of inertia.

RE: Composite HSS Design Properties

I didn't mention it, but my idea #2 would work if they were round also.

Also, for rectangular, the transformed MOI calc should be borderline trivial, so I'd probably just take a shot at that if nothing else.

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