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...
On the same project, there is a box culvert (12' x 15' wide) that will serve as a pedestrian tunnel. Less than half of the tunnel would be above grade initially and in the future it would be completely buried. The tunnel is 270' long. Would a contraction joint be in the bottom of the bottom...
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.
