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PROBLEM 2: Based on the given RIDF data, the relationship of the rainfall intensity and the time can be described using the general equation A. Determine the design peak flow for a 25-year return period flood, for an urban catchment that has an area of 0.75 sq. km. The slope of the catchment is 0.006 and the maximum length of flow is 900 meters. Assume runoff coefficient of 0.40. GIVEN: Rainfall-Intensity-Duration-Frequency (RIDF) Data (25-year return period) Duration, mins Rainfall, mm Intensity, mm/hr 5 10 15 20 30 45 60 27.3 40.7 53.1 61.1 75.1 91.1 101.6 327.6 244.2 212.4 183.3 150.2 121.5 101.6 Where: a, b, & c are regression constants a = 1098.984 b = General Equation A: a i = (te + b)e 3.46 0.569

PROBLEM 2: Based on the given RIDF data, the relationship of the rainfall intensity and the time can be described using the general equation A. Determine the design peak flow for a 25-year return period flood, for an urban catchment that has an area of 0.75 sq. km. The slope of the catchment is 0.006 and the maximum length of flow is 900 meters. Assume runoff coefficient of 0.40. GIVEN: Rainfall-Intensity-Duration-Frequency (RIDF) Data (25-year return period) Duration, mins Rainfall, mm Intensity, mm/hr 5 10 15 20 30 45 60 27.3 40.7 53.1 61.1 75.1 91.1 101.6 327.6 244.2 212.4 183.3 150.2 121.5 101.6 Where: a, b, & c are regression constants a = 1098.984 b = General Equation A: a i = (te + b)e 3.46 0.569

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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PROBLEM 2: Based on the given RIDF data, the relationship of the rainfall intensity and the time can be described using the general equation A. Determine the design peak flow for a 25-year return period flood, for an urban catchment that has an area of 0.75 sq. km. The slope of the catchment is 0.006 and the maximum length of flow is 900 meters. Assume runoff coefficient of 0.40. GIVEN: Rainfall-Intensity-Duration-Frequency (RIDF) Data (25-year return period) Duration, mins Rainfall, mm Intensity, mm/hr 5 10 15 20 30 45 60 27.3 40.7 53.1 61.1 75.1 91.1 101.6 327.6 244.2 212.4 183.3 150.2 121.5 101.6 General Equation A: Where: a, b, &c are regression constants a = 1098.984 a i = (te + b)e b = 3.46 0.569
Transcribed Image Text:PROBLEM 2: Based on the given RIDF data, the relationship of the rainfall intensity and the time can be described using the general equation A. Determine the design peak flow for a 25-year return period flood, for an urban catchment that has an area of 0.75 sq. km. The slope of the catchment is 0.006 and the maximum length of flow is 900 meters. Assume runoff coefficient of 0.40. GIVEN: Rainfall-Intensity-Duration-Frequency (RIDF) Data (25-year return period) Duration, mins Rainfall, mm Intensity, mm/hr 5 10 15 20 30 45 60 27.3 40.7 53.1 61.1 75.1 91.1 101.6 327.6 244.2 212.4 183.3 150.2 121.5 101.6 General Equation A: Where: a, b, &c are regression constants a = 1098.984 a i = (te + b)e b = 3.46 0.569
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