SI Units (metric): k = 0.082, d in m, and ds in mm.
U.S. Customary Units: k = 0.067, d in ft, and ds in mm.
SI units (metric)
U.S. Customary units
Flow depth d :
Particle size ds :
Manning's friction coefficient n :
Froude F ≥
Your request was processed at 06:46:56 am on February 19th, 2019 [
190219 06:46:56 ].