A system of pipe drains of (0.2m in diameter) are used to drainage area, the drains are located (1.8m) below ground surface. The impervious layer about 6.8m from ground surface, k=1.0 m/day. The successive irrigations are every 20 days, deep percolation losses toward water table (W.T) are 40mm/irrigation. Determine the spacing between drains. (1) To maintain W.T level of 0.8m. (2) To maintain W.T level of 1.2m.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Exercise [5]
A system of pipe drains of (0.2m in diameter) are used to drainage
area, the drains are located (1.8m) below ground surface. The
impervious layer about 6.8m from ground surface, k=1.0 m/day. The
successive irrigations are every 20 days, deep percolation losses
toward water table (W.T) are 40Omm/irrigation. Determine the spacing
between drains.
(1) To maintain W.T level of 0.8m.
(2) To maintain W.T level of 1.2m.
Transcribed Image Text:Exercise [5] A system of pipe drains of (0.2m in diameter) are used to drainage area, the drains are located (1.8m) below ground surface. The impervious layer about 6.8m from ground surface, k=1.0 m/day. The successive irrigations are every 20 days, deep percolation losses toward water table (W.T) are 40Omm/irrigation. Determine the spacing between drains. (1) To maintain W.T level of 0.8m. (2) To maintain W.T level of 1.2m.
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