Sediment Transport Parameter (k2) Override Option

The ABSCOUR 10 Method calculates the sediment transport parameter using the procedure described in the H&H Manual, Chapter 11:

k2 = 0.11(tc/t1+ 0.4)2.2 + 0.623
The NCHRP 24-20 Method uses a constant value of 0.875 for the sediment transport parameter.

The User can override the k2 parameter by choosing this option. This approach should not be used without the approval of the Office of Structures