8. Determine the peak runoff rate in Ashville, NC, for a 25-year storm of a 50-acre watershed with 22 acres of Residential (12,000 sf lots), 12 acres of Apartments, 6 acres of Lawn, and 10 acres of Forest? The length of flow is 1200 feet and an elevation drop of 150 feet.

8. Determine the peak runoff rate in Ashville, NC, for a 25-year storm of a 50-acre watershed with 22 acres of Residential (12,000 sf lots), 12 acres of Apartments, 6 acres of Lawn, and 10 acres of Forest? The length of flow is 1200 feet and an elevation drop of 150 feet.

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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8. Determine the peak runoff rate in Ashville, NC, for a 25-year storm of a 50-acre watershed with 22 acres of
Residential (12,000 sf lots), 12 acres of Apartments, 6 acres of Lawn, and 10 acres of Forest? The length of
flow is 1200 feet and an elevation drop of 150 feet.

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Problem 4.2. Determine the peak rate of runoff from an 8-ha (20-ac) watershed during a 30-min storm that gave the following amounts of rain during successive 5-min periods: 3, 8, 15, 15, 8, and 3 mm (0.1, 0.3, 0.6, 0.6, 0.3, and 0.1 in). The time of concentration for the watershed is 10 min. The runoff coefficients for the 2 ha (5 ac) are 0.2 and 0.6 for the remaining 6.0 ha (15 ac). What is the approximate return period for this runoff if the watershed is at your present location?
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