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Given a 25-year storm event using the rational method for the drainage basin located in Pennsylvania (Region 1) Time of concentration details Area: A=24 acres

Given a 25-year storm event using the rational method for the drainage basin located in Pennsylvania (Region 1) Time of concentration details Area: A=24 acres

Structural Analysis
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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a.8 mins b.18mins c.12mins d.16mins 

Given a 25-year storm event using the rational method for the drainage basin located in Pennsylvania (Region 1) Time of concentration details Area: A=24 acres Overland: Average grass cover: Length =100ft; slope =2.0 % Shallow Concentrated Flow: Length= 750 ft; slope =4.0 %, unpaved Stream Flow (See Fig Below): Length=1000 ft; slope=0.4% Use design values from table 11.1 only Impervious =0.5 acres Wooded (fair) = 11.5 acres Grass (fair) = 12 acres Average cross section Calculate the time for Overland Flow (t1)
Transcribed Image Text:Given a 25-year storm event using the rational method for the drainage basin located in Pennsylvania (Region 1) Time of concentration details Area: A=24 acres Overland: Average grass cover: Length =100ft; slope =2.0 % Shallow Concentrated Flow: Length= 750 ft; slope =4.0 %, unpaved Stream Flow (See Fig Below): Length=1000 ft; slope=0.4% Use design values from table 11.1 only Impervious =0.5 acres Wooded (fair) = 11.5 acres Grass (fair) = 12 acres Average cross section Calculate the time for Overland Flow (t1)
Grass (fair) = 12 acres Average cross section Calculate the time for Overland Flow (t1) 4' 20' ▼ 12₁ n = 0.035
Transcribed Image Text:Grass (fair) = 12 acres Average cross section Calculate the time for Overland Flow (t1) 4' 20' ▼ 12₁ n = 0.035
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