A storm drain system is shown in Figure P16.11. For the flow conditions indicated, determine the time of concentration from Point A to Point C using the Kirpich, Kerby, Bransby-Williams, and Federal Aviation Administration Methods. Paved area, 0.7 km2 C=0.9 Bare surface, 0.8 km2 C=0.6 200 S-3% Drain 500 m V= 1.2 mis 150 m S=2%

A storm drain system is shown in Figure P16.11. For the flow conditions indicated, determine the time of concentration from Point A to Point C using the Kirpich, Kerby, Bransby-Williams, and Federal Aviation Administration Methods. Paved area, 0.7 km2 C=0.9 Bare surface, 0.8 km2 C=0.6 200 S-3% Drain 500 m V= 1.2 mis 150 m S=2%