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Hey all, I'm wondering if anyone can provide insight on how to calculate weld stresses for the weld group as shown in the sketch provided. I'm struggling to determine what the polar moment of inertia, Ip, is in each direction. For example, in plan view, how does one calculate Ip when welds...

Thanks OSUCivlEng, you answered my question perfectly. What's concerning is that I reached out to a senior structural engineer at my firm and he gave a different explanation of how LLDF are applied. He tried to explain that the max moment due to the effect of placing one truck multiplied by the...

Hey all, I was hoping someone could help me understand how live load distribution (LLDF) factors are applied. The wording in the AASHTO specifications isn't clear and I haven't been able to find any helpful resources online. My question is: When determining the resultant moment (or shear) in...

Hey all, I was hoping someone could help me understand how live load distribution (LLDF) factors are applied. The wording in the AASHTO specifications isn't clear and I haven't been able to find any helpful resources online. My question is this: Since the LLDF is in terms of "Lanes", how is...