2- A small watershed consists of 1.5 km² of cultivated area (c = 0.2), 2.5 km² under forest (c = 0.2) and 1.0 km² under grass cover (c = 0.35). There is a fall of 20 m in a watercourse of length 2.5 km. Intensity-Duration-Frequency The relation for the area is given by In this equation: I: rainfall intensity (mm/hr) 1 = 8070.2 (t + 11) ⁰.5 T: the return period (years) T: rainfall duration (hr) Estimate the peak rate of runoff for a 25-year, 50-year, and 100-year frequency.

2- A small watershed consists of 1.5 km² of cultivated area (c = 0.2), 2.5 km² under forest (c = 0.2) and 1.0 km² under grass cover (c = 0.35). There is a fall of 20 m in a watercourse of length 2.5 km. Intensity-Duration-Frequency The relation for the area is given by In this equation: I: rainfall intensity (mm/hr) 1 = 8070.2 (t + 11) ⁰.5 T: the return period (years) T: rainfall duration (hr) Estimate the peak rate of runoff for a 25-year, 50-year, and 100-year frequency.

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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