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BigH we are in agreement and your points well taken-- However as engineers we must continually learn and push our knowledge boundaries, especially as young engineers. Sometimes reviewing the calculation procedures for a engineering issue can be a sobering experience that demonstrates one's...

to theclipper, A lot of good comments especially by SoilRocks about the 'performance specs' for geotechnical work. However, no one has yet adressed your initial question. I think you are looking for calculation aids and useful reference sources that may help you solve your problem. Books...

You may want to consider AISI 8620. Strength will be lower, it is a carburizing grade, but very weldable. It would simplify some of your welding of heat treated material concerns -- which I agree should be of great concern. Also T1 Steel is another alternative that would eliminate heat treat.

I will address the .40 x(Yield Strength) Recall Von Mises stresses and material strengths when loaded in shear Yield strength in shear is taken as 58% (AISC uses 60%) of Normal direction yield. Combined with ASD Allowable Stress of 2/3 Yield you get: .60 x.6667 = .400 I believe AISC uses the...

Replies are very interesting. Scofie, I am sorry. I did not mean to imply that AISC ASD excluded dynamic factors or handled them in any manner that contradicts greatly with LRFD. I simply prefer the LRFD. You lost me a bit on your SF numbers. Nevertheless, I believe you should apply a...

This is a great question. I will be interested to see the replies. Keep in mind that the 5.0 for hoisting equipment is not a true "safety factor" since it is based on "static loads" without consideration of the dynamics, impact or fatigue associated with lifting equipment...

Make sure that mountings, either welded or bolted are properly analyzed especially based on seismic zone. Lindapter makes some nice structural clamps that might work well. Design should be reviewed by an SE