I interpret in AASHTO standard spec section 3.15.2.2 that the area of the substructure for the end and front elevations should be calculated as set values. The 40 psf wind load should be resolved into an end and front component such that the resulant remains 40 psf. For example, for a 0 degree...
For contraction joints in a reinforced concrete wingwall that is on a spread footing, is the joint typically placed in the footing as well? The project is in Delaware. The footing has 2 feet of cover.