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There are a couple of papers on this topic that you can download from the Foundation Performance Organization (www.foundationperformance.org). There are several papers by Lytton who is an expert on the use of Volflow. I believe he suggests modeling the moisture conditioned pad as a...

dik, There's no need to do any type of finite element modeling, unless you were trying to analyze the plate bending capacity. I normally do a yield line analysis to determine plate thickness. The design of the shaft itself for axial and lateral loading is no different than any other steel...

Dik, I provide specialty design to a helical pile contractor. Everything we do is custom. What are you looking for? You can contact me direct if needed. Bks

I disagree with SoilRocks. Most helical pile are designed as end bearing pile, not friction pile. The design is normally based upon the individual bearing of each helix. Most of these pile have small shafts and skin friction is normally neglected in the design. I recently designed a 24"...

I agree with PEinc. The geotechnical engineer gave an "allowable" bearing capacity for a drilled shaft. You don't know what his true factor of safety was in publishing that value. I have known geotechs to up the factor of safety for lightly loaded structures just to make sure the engineer...

You can download COM624P from the FHWA website. It is the precursor to LPILE and it is free. Its a bit archaic to use, but it should serve your purpose. JE Bowles in his Foundation Analysis and Design text book discusses using a spring model to analyze lateral loads on piles. I haven't...