1. A 160-acre drainage basin has the following characteristics:Land UseResidential, flat, 60% imperviousResidential, flat, 30% imperviousConcrete or sheet asphalt pavementTurf MeadowsForested Area* for a range of values, the runoff coefficient can be calculated as an average value.Rainfall Intensity (in/hr)Find the peak runoff from the drainage area for a 20-minute duration storm with a return frequencyof 25-years?20181614200Frequency (years)10050251010Area %2030525202030Duration (min)Coefficient (C)*0.550.400.850.250.2405060

Answer We know that Peak runoff is given by Qpeak = C*i*A Where Q = peak runoff in ft3/sec C =…

1. A 160-acre drainage basin has the following characteristics: Land Use Residential, flat, 60% impervious Residential, flat, 30% impervious Concrete or sheet asphalt pavement Turf Meadows Area % 20 30 5 25 20 Coefficient (C)* 0.55 0.40 0.85 0.25 0.2 Forested Area * for a range of values, the runoff coefficient can be calculated as an average value. Find the peak runoff from the drainage area for a 20-minute duration storm with a return frequency of 25-years?

1. A 160-acre drainage basin has the following characteristics: Land Use Residential, flat, 60% impervious Residential, flat, 30% impervious Concrete or sheet asphalt pavement Turf Meadows Area % 20 30 5 25 20 Coefficient (C)* 0.55 0.40 0.85 0.25 0.2 Forested Area * for a range of values, the runoff coefficient can be calculated as an average value. Find the peak runoff from the drainage area for a 20-minute duration storm with a return frequency of 25-years?

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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