	Product(s):	StormCAD,CivilStorm,SewerGEMS
	Version(s):	08.11.05.113
	Area:	Help and Documentation

Problem

Where did the typical junction headloss coefficients come from in the help topic "Headloss Coefficients for Junctions"?

Solution

These values are reasonable and are based on section 7.1.6.5 in the HEC-22 Urban Drainage Design Manual. That manual refers to it as the "Approximate Method" while the Bentley Storm and Sewer products refer to it as the "Standard Method". The user can enter any value they think is appropriate for the junction headloss coefficient.

Junction minor headloss coefficients for standard method

Problem

Solution

See Also