7.9 A rectangular parking lot is 150 m wide and 300 m long. The time of overland flow across the pavement to the longitudinal gutter along the centre is 20 minutes and the estimated total time of concentration to the downstream end of the gutter is 25 minutes. The coefficient of runoff is 0.92. If a rainfall of intensity 6 cm/h falls on the lot for 10 minutes and stops abruptly determine the peak rate of flow.
7.9 A rectangular parking lot is 150 m wide and 300 m long. The time of overland flow across the pavement to the longitudinal gutter along the centre is 20 minutes and the estimated total time of concentration to the downstream end of the gutter is 25 minutes. The coefficient of runoff is 0.92. If a rainfall of intensity 6 cm/h falls on the lot for 10 minutes and stops abruptly determine the peak rate of flow.
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter16: Highway Drainage
Section: Chapter Questions
Problem 9P
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![7.9 A rectangular parking lot is 150 m wide and 300 m long. The time of overland flow
across the pavement to the longitudinal gutter along the centre is 20 minutes and the
estimated total time of concentration to the downstream end of the gutter is 25 minutes.
The coefficient of runoff is 0.92. If a rainfall of intensity 6 cm/h falls on the lot for 10
minutes and stops abruptly determine the peak rate of flow.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc63c1261-a41c-4754-ac4e-33e23484eea9%2Fe3028e03-6edc-470e-a989-738cf6109d48%2Fhioky3cj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7.9 A rectangular parking lot is 150 m wide and 300 m long. The time of overland flow
across the pavement to the longitudinal gutter along the centre is 20 minutes and the
estimated total time of concentration to the downstream end of the gutter is 25 minutes.
The coefficient of runoff is 0.92. If a rainfall of intensity 6 cm/h falls on the lot for 10
minutes and stops abruptly determine the peak rate of flow.
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