An urban catchment has an area of 100 acres and time of concentration of 6.5 hrs. The IDF curve parameters for a 25-yr flood in this area are e-0.5,b-100 and d-1O. Assume the catchment is 80% unimproved with sandy loam soil and runoff coefficient of O.15 and 20% concrete streets and parkinglots with runoff coefficient of 09.If a culvert for drainage at the outlet of this area is to be designed for a return period of 25-years, estimate the required peak flow based on theRational Method.

A = Catchment Area = 100 acrest = Time of concentration = 6.5 hr = 6.5×60= 390 minConstants for 25…

An urban catchment has an area of 100 acres and time of concentration of 6.5 hrs. The IDF curve parameters for a 25-yr flood in this area are e-05 b-100 and d-10. Assume the catchment is 80% unimproved with sandy loam soil and runoff coefficient of 0.15 and 20% concrete streets and parking lots with runoff coefficient of 0.9. If a culvert for drainage at the outlet of this area is to be designed for a return period of 25-years, estimate the required peak flow based on the Rational Method.

An urban catchment has an area of 100 acres and time of concentration of 6.5 hrs. The IDF curve parameters for a 25-yr flood in this area are e-05 b-100 and d-10. Assume the catchment is 80% unimproved with sandy loam soil and runoff coefficient of 0.15 and 20% concrete streets and parking lots with runoff coefficient of 0.9. If a culvert for drainage at the outlet of this area is to be designed for a return period of 25-years, estimate the required peak flow based on the Rational Method.

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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