A catchment area has seven rain gauge stations. In a year, the annual rainfall recorded by the gauges are as follows: Station Q R T V Rainfall 120 140 118 109 160 100 145 (cm) For a 5% error in the estimation of the mean rainfall, calculate the minimum number of additional stations required to be established in the catchment.

A catchment area has seven rain gauge stations. In a year, the annual rainfall recorded by the gauges are as follows: Station Q R T V Rainfall 120 140 118 109 160 100 145 (cm) For a 5% error in the estimation of the mean rainfall, calculate the minimum number of additional stations required to be established in the catchment.

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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A catchment has six rain gauge stations, In a year, the annual rainfall recorded by the gauges are as follows: Station R C A B F DE Rainfall (cm) 82.6 102.9 180.3 110.3 98.8 136.7 For a 10% error in the estimation of the mean rainfall, what is the optimum number of = 35.04 and ε = 10) stations in the catchment? (Take P = 118.6, om-1 1 (b) 9 (d) 7 (a) 10 (c) 8
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