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I have a single story building. When calculating weight of wall , the height of wall should be calculated from bottom of the wall or bottom of the slab?

I am calculating the Allowable axial Load and Moment for HSS round pipe filled with concrete. AISC 13 shows equations based on Plastic stress distribution method. I don't know how to calculate Plastic neutral axis and Theta 2 based on that for my calculations. Any advice ??????

As the load is lateral, can i consider the internal moment due to weight of the composite column as resistive moment ?

CAn i use a Steel pipe pile and design it for shear and moment like a cantilever beam?

I agree. So i should try to design a pipe pile or a group of pipe piles. I am still looking for a reference. Any guidance will help.

Yes that is correct. AASHTO vehicle collision manual uses it as a dolphin structure to protect piers. But even that document does not mention anything about how the lateral load due to vessel should be resolved.

Thank you, I will still appreciate if someone has any ideas about my initial question.

I was looking into dolphin design and ended up deciding on steel sheet pile. Can you point me to a reference for dolphin design. Thank you.

I need to design a steel sheet pile cofferdam with granular fill. It has a barge impact force of 1500 kips. All the manuals or publications talk about impact force but not about how to resolve it. The interlock tension formula can be used for internal pressure due to fill, can i use the same to...

I have never designed slab on grade. The loading i have is HS 20. I don't have soil information also so assuming good soil with sub grade modulus of 200. Please help.