C11 3 sig. figures pls:) An agricultural catchment area of a town in Egaro is 65 ha. Average slope iscalculated as 0.6%. Water travels with a maximum length of 700 m. Thedepth-duration relationship for a 10-year return period on the site is givenbelow:Duration (m)104060Depth of rainfall (mm) 174050621. 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 runoffcoefficients are as given below, calculate the equivalent runoff coefficient.% of RunoffLand useArea coefficientRoads6.0.7Lawn20 0.1Residential59 0.3areaIndustrial12 0.8area57302026

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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

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

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