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DETERMINE: B. Specific yield of the soil and specific capacity of the well

DETERMINE: B. Specific yield of the soil and specific capacity of the well

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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DETERMINE: B. Specific yield of the soil and specific capacity of the well

(b) A well of size 6.60 × 4.05 m and depth 4.7 m in the lateritic soil near Mangalore (west coast of India) has its normal water level at 3.825 m below ground level (bgl). By pumping for 1½ hours, the water level (bgl) was depressed to 4.525 m and the pumping was stopped. The recuperation rates of the well during 2 hours after the pumping stopped are given below. The total volume of water pumped during 1½ hours of pumping was 28.87 m³ (no well steining is provided) Recuperation rates Time since pumping stopped (min) 0 10 20 30 40 50 60 70 80 90 120 150 Water level, bgl (m) 4.525 4.365 4.245 4.135 4.075 4.015 3.985 3.960 3.950 3.935 3.920 3.902
Transcribed Image Text:(b) A well of size 6.60 × 4.05 m and depth 4.7 m in the lateritic soil near Mangalore (west coast of India) has its normal water level at 3.825 m below ground level (bgl). By pumping for 1½ hours, the water level (bgl) was depressed to 4.525 m and the pumping was stopped. The recuperation rates of the well during 2 hours after the pumping stopped are given below. The total volume of water pumped during 1½ hours of pumping was 28.87 m³ (no well steining is provided) Recuperation rates Time since pumping stopped (min) 0 10 20 30 40 50 60 70 80 90 120 150 Water level, bgl (m) 4.525 4.365 4.245 4.135 4.075 4.015 3.985 3.960 3.950 3.935 3.920 3.902
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