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.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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PROBLEM #3 ONLY!!!

Problem 1: 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.

Problem 2: Using the Kirpich time of concentration you calculated in Problem 1 and assuming the watershed is located in Seattle, WA, determine the intensity for the 50-year storm.

Problem 3: For the watershed in Problems 1 and 2, determine the peak flowrate(in ft3/s )for the 50-year storm event at Point Cusing the Rational Method.

Paved area, 0.7 km2
C = 0.9
Bare surface, 0.8 km2
C= 0.6
200 m
S= 3%
Drain
500 m
V= 1.2 mis
150 m
S 2%
Transcribed Image Text:Paved area, 0.7 km2 C = 0.9 Bare surface, 0.8 km2 C= 0.6 200 m S= 3% Drain 500 m V= 1.2 mis 150 m S 2%
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