pipe of 1.2 m diameter was provided in a reservoir to act as an outlet. Due to disuse, it was buried and completely clogged up for some length by sediment. Measurements indicated the presence of fine sand (K, 10 m/day) deposit for a length of 100 m, at the upstream end and of coarse sand (K, = 50 m/day) at the downstream end for a length of 50 m. In between these two layers the presence of silty sand (K3=0.10 m/day) for some length is identified. For a head difference of 20 m on either side of the clogged length t
pipe of 1.2 m diameter was provided in a reservoir to act as an outlet. Due to disuse, it was buried and completely clogged up for some length by sediment. Measurements indicated the presence of fine sand (K, 10 m/day) deposit for a length of 100 m, at the upstream end and of coarse sand (K, = 50 m/day) at the downstream end for a length of 50 m. In between these two layers the presence of silty sand (K3=0.10 m/day) for some length is identified. For a head difference of 20 m on either side of the clogged length t
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter2: Geotechnical Properties Of Soil
Section: Chapter Questions
Problem 2.8P
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A pipe of 1.2 m diameter was provided in a reservoir to act as an outlet. Due to disuse, it was buried and completely clogged up for some length by sediment. Measurements indicated the presence of fine sand (K, 10 m/day) deposit for a length of 100 m, at the upstream end and of coarse sand (K, = 50 m/day) at the downstream end for a length of 50 m. In between these two layers the presence of silty sand (K3=0.10 m/day) for some length is identified. For a head difference of 20 m on either side of the clogged length the seepage discharge is found to be 0.8 m³/day. Estimate the length of the pipe filled up by silty sand.
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