A 125-acre urban drainage areaconsists of three different watershedareas as follows: Downtown Area 50%Parks 15% Playgrounds 35%----If thetime of concentration for the drainagearea is 1.5 hr, determine the runoff ratefor a storm of 50-yr frequency.Assume that the rainfall-intensitycurves in Figure 16.2 are applicable tothis drainage area. Determine Q. * Table 16.2a Additional Runoff Coefficients for Urban AreasType of Drainage AreaRunoff Coefficient, C'Business:Downtown areasNeighborhood areasResidential:0.70-0.950.50-0.70Single-family areasMulti-units, detached0.30 –0.500.40-0.60Multi-units, attached0.60–0.75SuburbanApartment dwelling areasIndustrial:0.25-0.400.50-0.70Light areasHeavy areasParks, cemeteriesPlaygroundsRailroad yard areasUnimproved areasStreets:0.50-0.800.60-0.900.10-0.250.20-0.400.20-0.400.10-0.30AsphalticConcrete0.70-0.850.80-0.95Brick0.75-0.85Drives and walks0.75–0.85Roofs0.75-0.95

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A 125-acre urban drainage area consists of three different watershed areas as follows: Downtown Area 50% Parks 15% Playgrounds 35%----If the time of concentration for the drainage area is 1.5 hr, determine the runoff rate for a storm of 50-yr frequency. Assume that the rainfall-intensity curves in Figure 16.2 are applicable to this drainage area. Determine Q. *

A 125-acre urban drainage area consists of three different watershed areas as follows: Downtown Area 50% Parks 15% Playgrounds 35%----If the time of concentration for the drainage area is 1.5 hr, determine the runoff rate for a storm of 50-yr frequency. Assume that the rainfall-intensity curves in Figure 16.2 are applicable to this drainage area. Determine Q. *

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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