. A drainage network of parallel grid system of double side collector, ten laterals are joint to the collector in each side equally spaced. The laterals are concrete pipes with uniform flow and 300 m length where installed at depth of 2m below soil surface with slope of 0.1%, the ground water table was found at depth of 1.2m and the impermeable layer at depth of 6m below soil surface. The hydraulic information indicated that the soil is stable with hydraulic conductivity of 0.8 m/d, the drainage coefficiert is 8 mm/d. What drain spacing must the laterals be applied and what is the inside diameters of the laterals and the collector if we assume a plastic pipe with non-uniform flow for the collector and a slope of 10%.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Q6/ A. A drainage network of parallel grid system of double side collector, ten laterals are joint to
the collector in each side equally spaced. The laterals are concrete pipes with uniform flow
and 300 m length where installed at depth of 2m below soil surface with slope of 0.1%, the
ground water table was found at depth of 1.2m and the impermeable layer at depth of Gm
below soil surface. The hydraulic information indicated that the soil is stable with hydraulic
conductivity of 0.8 m/d, the drainage coefficiert is 8 mm/d. What drain spacing must the
laterals be applied and what is the inside diameters of the laterals and the collector if we
assume a plastic pipe with non-uniform flow for the collector and a slope of 10%.
41
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Transcribed Image Text:Q6/ A. A drainage network of parallel grid system of double side collector, ten laterals are joint to the collector in each side equally spaced. The laterals are concrete pipes with uniform flow and 300 m length where installed at depth of 2m below soil surface with slope of 0.1%, the ground water table was found at depth of 1.2m and the impermeable layer at depth of Gm below soil surface. The hydraulic information indicated that the soil is stable with hydraulic conductivity of 0.8 m/d, the drainage coefficiert is 8 mm/d. What drain spacing must the laterals be applied and what is the inside diameters of the laterals and the collector if we assume a plastic pipe with non-uniform flow for the collector and a slope of 10%. 41 {
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