1. The average annual precipitation for the four sub-basins constituting a large river basin is 39.70 (a), 44.20 (b), 33.40 (c), and 28.00 (d) inches. The areas are 360, 275, 420, and 650 sq. mile, respectively. a. What is the average annual precipitation for the area as a whole? b. If the total area (percentage) for each of the observed precipitation was proportioned at 20, 15, 25 and 40, respectively, what is the estimated weighted precipitation of the river basin? c. Assuming that the net area for each sub-basin is reduced at 10% from its original while the average annual precipitation per sub-basin is projected to increase at 20%, what would be the estimated precipitation volume for the said large river basin?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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1. The average annual precipitation for the four sub-basins constituting a
large river basin is 39.70 (a), 44.20 (b), 33.40 (c), and 28.00 (d) inches. The
areas are 360, 275, 420, and 650 sq. mile, respectively.
a. What is the average annual precipitation for the area as a whole?
b. If the total area (percentage) for each of the observed precipitation
was proportioned at 20, 15, 25 and 40, respectively, what is the
estimated weighted precipitation of the river basin?
c. Assuming that the net area for each sub-basin is reduced at 10% from
its original while the average annual precipitation per sub-basin is
projected to increase at 20%, what would be the estimated
precipitation volume for the said large river basin?
Transcribed Image Text:1. The average annual precipitation for the four sub-basins constituting a large river basin is 39.70 (a), 44.20 (b), 33.40 (c), and 28.00 (d) inches. The areas are 360, 275, 420, and 650 sq. mile, respectively. a. What is the average annual precipitation for the area as a whole? b. If the total area (percentage) for each of the observed precipitation was proportioned at 20, 15, 25 and 40, respectively, what is the estimated weighted precipitation of the river basin? c. Assuming that the net area for each sub-basin is reduced at 10% from its original while the average annual precipitation per sub-basin is projected to increase at 20%, what would be the estimated precipitation volume for the said large river basin?
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