Lab 3 Solutions

# Lab 3 Solutions - CEIE 340 Problem 1 Part A Lab 3 Solutions...

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CEIE 340 Lab 3 Solutions YHK Page 1 of 8 Problem 1 Part A: The annual rainfall data provided in the problem statement are shown below on the left. These same data are sorted from smallest to largest annual flows (Q) and shown on the right. In addition, columns are added to define the rank of each flow, and the computed value of the Weibull plotting position (estimated probability of non- exceedance). The column to the far right is the probability of non-exceedance expressed as a percent. Original Data Data Sorted by Annual Flow Year Q [10 5 ac-ft/yr] Rank Q [10 5 ac-ft/yr] Year Weibull Plotting Position: Estimated Probability of Non- Exceedance Percent Non- Exceedance 1955 10.2 1 3.1 1963 0.05 5 1956 26.0 2 3.2 1962 0.10 10 1957 31.0 3 3.6 1970 0.15 15 1958 11.5 4 3.7 1960 0.20 20 1959 50.0 5 4.7 1968 0.25 25 1960 3.7 6 6.3 1965 0.30 30 1961 6.8 7 6.8 1961 0.35 35 1962 3.2 8 9.4 1973 0.40 40 1963 3.1 9 10.2 1955 0.45 45 1964 28.7 10 10.4 1966 0.50 50 1965 6.3 11 11.3 1972 0.55 55 1966 10.4 12 11.5 1958 0.60 60 1967 51.2 13 14.9 1969 0.65 65 1968 4.7 14 20.2 1971 0.70 70 1969 14.9 15 26.0 1956 0.75 75 1970 3.6 16 28.7 1964 0.80 80 1971 20.2 17 31.0 1957 0.85 85 1972 11.3 18 50.0 1959 0.90 90 1973 9.4 19 51.2 1967 0.95 95 The values of Q and Percent Non-Exceedance are plotted on log-normal probability paper. The values of Q are on the horizontal axis and the values of Percent Non-Exceedance on the vertical axis. Because the values of Q span two orders of magnitude, the graph will require 2-cycle paper. Here is the graph:

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CEIE 340
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## This note was uploaded on 11/11/2009 for the course CEIE 340 taught by Professor Choudhury during the Spring '09 term at George Mason.

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Lab 3 Solutions - CEIE 340 Problem 1 Part A Lab 3 Solutions...

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