Use the TR-55 method to estimate the time of concentration for following watershed if the 2-year 24-hr rainfall is 2.5 in. Flow path A → B B → C C D D-E D C B Description Overland flow, dense grasses Shallow concentrated flow, unpaved surfaces Channel flow, rectangular channel, bottom width 2 ft, depth 1.5 ft, Manning's n = 0.04 Channel flow, trapezoidal channel, bottom width 4 ft, depth 3 ft, side slope 2:1, Manning's n = 0.035 Slope 0.02 0.05 0.03 0.005 Length (ft) 350 500 1000 1500

Use the TR-55 method to estimate the time of concentration for following watershed if the 2-year 24-hr rainfall is 2.5 in. Flow path A → B B → C C D D-E D C B Description Overland flow, dense grasses Shallow concentrated flow, unpaved surfaces Channel flow, rectangular channel, bottom width 2 ft, depth 1.5 ft, Manning's n = 0.04 Channel flow, trapezoidal channel, bottom width 4 ft, depth 3 ft, side slope 2:1, Manning's n = 0.035 Slope 0.02 0.05 0.03 0.005 Length (ft) 350 500 1000 1500

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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Concept explainers

Time and time related variables in engineering

Time is the event progression starting from past to present and then, future statistically. The time-related variable is any particular value in relation to time to assess its changes on a specified (XY) plane.

Question

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Use the TR-55 method to estimate the time of concentration for following watershed if the 2-year 24-hr
rainfall is 2.5 in.
Flow path
A → B
B → C
C → D
D → E
D
B
Description
Overland flow, dense grasses
Shallow concentrated flow, unpaved surfaces
Channel flow, rectangular channel, bottom width 2 ft,
depth 1.5 ft, Manning's n = 0.04
Channel flow, trapezoidal channel, bottom width 4 ft,
depth 3 ft, side slope 2:1, Manning's n = 0.035
Slope Length (ft)
0.02
350
0.05
500
0.03
1000
0.005
1500

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