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1. Estimate the peak flow rate assuming that the runoff coefficient is 0.4. 2. If the land use and the corresponding percentage of the area and runoff coefficients are as given below, calculate the equivalent runoff coefficient.

1. Estimate the peak flow rate assuming that the runoff coefficient is 0.4. 2. If the land use and the corresponding percentage of the area and runoff coefficients are as given below, calculate the equivalent runoff coefficient.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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C11 3 sig. figures pls:)
An agricultural catchment area of a town in Egaro is 65 ha. Average slope is calculated as 0.6%. Water travels with a maximum length of 700 m. The depth-duration relationship for a 10-year return period on the site is given below: Duration (m) 10 40 60 Depth of rainfall (mm) 17 40 50 62 1. Estimate the peak flow rate assuming that the runoff coefficient is 0.4. 2. If the land use and the corresponding percentage of the area and runoff coefficients are as given below, calculate the equivalent runoff coefficient. % of Runoff Land use Area coefficient Roads 6. 0.7 Lawn 20 0.1 Residential 59 0.3 area Industrial 12 0.8 area 57 30 20 26
Transcribed Image Text:An agricultural catchment area of a town in Egaro is 65 ha. Average slope is calculated as 0.6%. Water travels with a maximum length of 700 m. The depth-duration relationship for a 10-year return period on the site is given below: Duration (m) 10 40 60 Depth of rainfall (mm) 17 40 50 62 1. Estimate the peak flow rate assuming that the runoff coefficient is 0.4. 2. If the land use and the corresponding percentage of the area and runoff coefficients are as given below, calculate the equivalent runoff coefficient. % of Runoff Land use Area coefficient Roads 6. 0.7 Lawn 20 0.1 Residential 59 0.3 area Industrial 12 0.8 area 57 30 20 26
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