For a mat foundation 5 feet deep, would making Cross Section Trimming to none for this option be accurate when modeling.
I want to apply a distributed RF along the top and bottom of footing at a certain spacing. For the properties what should I put in the ELV. and slab face?
If the mat is constant thickness, then the trimming options do not matter. See: https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/4514/cross-section-trimming-tn
Regarding slab face, see: https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/8362/ram-concept-reinforcement-faq