Distance from Stream Bed to top of Footing (Exposed Footing Height)

The distance from the streambed to the top of footing or top of pile cap in feet (meters). Input a positive number when the streambed is below the top of footing/pile cap; input a negative number when the streambed is above the top of footing/pile cap. The negative number is important for pier option 4 (The recommended evaluation option) since with this option the program automatically solves Pier Options 1 thru 3 for conditions with contraction scour and without contraction scour.