IS 9119 : 2024 Method of Flow Estimation by Jet Characteristics (Approximate Methods)

ICS 93.025

WRD 01

1 SCOPE

1.1 This standard lays down the procedures for estimation of flow in closed circular horizontal conduits flowing full and freely discharging into atmosphere as a free jet. The characteristics of this free jet are expressed in terms of the vertical drop of the jet over a certain horizontal distance from the free end of the pipe.

1.2 This method should not be used where there is a heavy tendency of jet to disintegrate and when the jet fluctuates violently.