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A bed of uniform sand, having particle size 0.45 mm diameter and specific gravity 2.65, porosity 0.42 and depth of the bed 0.67 m is to be washed hydraulically. Compute (a) Backwash rate so that expansion will be 50%. (b) Head loss at this rate. Take: Density of water = 998.2 kg/m³. Dynamic viscosity of water(u) = 1.002 × 10-3 kg/m-s X CD 18.5 Re 0.6

A bed of uniform sand, having particle size 0.45 mm diameter and specific gravity 2.65, porosity 0.42 and depth of the bed 0.67 m is to be washed hydraulically. Compute (a) Backwash rate so that expansion will be 50%. (b) Head loss at this rate. Take: Density of water = 998.2 kg/m³. Dynamic viscosity of water(u) = 1.002 × 10-3 kg/m-s X CD 18.5 Re 0.6

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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A bed of uniform sand, having particle size 0.45 mm diameter and specific gravity 2.65, porosity 0.42 and depth of the bed 0.67 m is to be washed hydraulically. Compute (a) Backwash rate so that expansion will be 50%. (b) Head loss at this rate. Take: Density of water = 998.2 kg/m³. Dynamic viscosity of water(u) = 1.002 × 10-³ kg/m-s CD 18.5 0.6 Re0.
Transcribed Image Text:A bed of uniform sand, having particle size 0.45 mm diameter and specific gravity 2.65, porosity 0.42 and depth of the bed 0.67 m is to be washed hydraulically. Compute (a) Backwash rate so that expansion will be 50%. (b) Head loss at this rate. Take: Density of water = 998.2 kg/m³. Dynamic viscosity of water(u) = 1.002 × 10-³ kg/m-s CD 18.5 0.6 Re0.
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