Hi,
i would like to ask if tank v.3.20 designs roofs and supporting structures for the load compinations of Appendix R of API latest edition.If not which loads are taken into consideration for the calculations? Thank you

Roof loads consist of specified live loads, specified snow loads, and self weight.

Other sections of the Code specifically call out the exact load combinations to use, which is what the second sentance in R.1 states.