1. Determine the force F per metre width (into the page) of the rectangular prismatic concrete block shown on the figure below, that would lead to sliding of the block. The water depth is 10m and the unit weight of concrete is 24 kN/m³. 10m 5m F 2.5m Sand sea bed, &=p²=35°

1. Determine the force F per metre width (into the page) of the rectangular prismatic concrete block shown on the figure below, that would lead to sliding of the block. The water depth is 10m and the unit weight of concrete is 24 kN/m³. 10m 5m F 2.5m Sand sea bed, &=p²=35°

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter14: Sheet-pile Walls

Section: Chapter Questions

Problem 14.11P

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Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

1. Determine the force F per metre width (into the page) of the rectangular prismatic
concrete block shown on the figure below, that would lead to sliding of the block. The
water depth is 10m and the unit weight of concrete is 24 kN/m³.
10m
5m
2.5m
Sand sea bed, d=p²=35°

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