I am designing a multi column pier on spread footing in LEAP 20.00.00.58. I noticed that the option in A/D parameters of designing footing per AASHTO 10.6.1.3 disappears once multiple columns are specified in the model. Is this a bug, since 10.6.1.3 and 10.6.1.4 do not say that they are not applicable to multi column piers? I assume the analysis would be conducted such 10.6.1.3 is not considered?
When there is only column specified, option for 10.6.1.3 exists
When there are multiple columns specified (two in my test case), option for 10.6.1.3 does NOT exist
Currently this option is not supported for multi column combined spread footing design.
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