What is the 10-yr peak flow in cfs using the rational method at a stormwater inlet for a region with a total area of 60 acres and three different land uses that are shown in the table below? An inlet time of 40 min with rainfall intensity of 4 in./hr for a 10-yr return period is assumed. Area (ac) Runoff coefficient 35 Land use Multi-units, detached Railroad yard areas 10 Business (neighborhood areas) 15 0.5 0.3 0.6

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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What is the 10-yr peak flow in cfs using the rational method at a stormwater inlet for a
region with a total area of 60 acres and three different land uses that are shown in the table
below? An inlet time of 40 min with rainfall intensity of 4 in./hr for a 10-yr return period is
assumed.
Land use
Multi-units, detached
Railroad yard areas
Business (neighborhood areas) 15
Area (ac) Runoff coefficient
35
0.5
0.3
0.6
23 10.15
Transcribed Image Text:What is the 10-yr peak flow in cfs using the rational method at a stormwater inlet for a region with a total area of 60 acres and three different land uses that are shown in the table below? An inlet time of 40 min with rainfall intensity of 4 in./hr for a 10-yr return period is assumed. Land use Multi-units, detached Railroad yard areas Business (neighborhood areas) 15 Area (ac) Runoff coefficient 35 0.5 0.3 0.6 23 10.15
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