A mechanically cleaned bar rack screen is installed ahead of a velocity controlled grit chamber. The bars are 10 mm thick, and the openings are 20 mm wide. The flow through the screen is 0.75 m3/s, and the depth of flow is 1.45 m in the channel upstream of the bar rack.

A mechanically cleaned bar rack screen is installed ahead of a velocity controlled grit chamber. The bars are 10 mm thick, and the openings are 20 mm wide. The flow through the screen is 0.75 m3/s, and the depth of flow is 1.45 m in the channel upstream of the bar rack.

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter16: Soil Improvement And Ground Modification

Section: Chapter Questions

Problem 16.10P

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Concept explainers

Consolidation parameters

Consolidation is the process of expulsion of pore water present in the voids of soil solids under the pressure of the applied load. This is a quick process in the case of coarse-grained soils since the permeability is high due to the presence of more voids, while it is a slow and gradual process in the case of clayey soil as the permeability of clay is less. An example of consolidation is the settlement of soil under a building due to the load coming from the building.

Question

A mechanically cleaned bar rack screen is installed ahead of a velocity controlled grit chamber. The bars are 10 mm thick, and the openings are 20 mm wide. The flow through the screen is 0.75 m³/s, and the depth of flow is 1.45 m in the channel upstream of the bar rack.

Calculate the flow velocity through racks (m/s) .
Calculate the water depth in the channel downstream of the bar rack (m).

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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A mechanically cleaned bar rack screen is installed ahead of a velocity controlled grit chamber. The bars are 10 mm thick, and the openings are 20 mm wide. The flow through the screen is 0.75 m3/s, and the depth of flow is 1.45 m in the channel upstream of the bar rack. 1. Calculate the flow velocity through racks (m/s). 2. Calculate the water depth in the channel downstream of the bar rack (m).
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