Question

Total lateral earth pressure is directly proportional to

Answer 1

Total lateral earth pressure is directly proportional to the square of the depth of the soil.
Thank you.

Answer 2

The pressure exerted by soil in the horizontal direction is known as lateral earth pressure. Latitudinal earth pressure is significant because it influences the consolidation behaviour and strength of soil and is taken into account in the design of geotechnical engineering structures such as retaining walls, basements, tunnels, deep foundations, and braced excavations.

Lateral earth pressure at any depth H is given by,

P = k.(σ₀)

where,

k = coefficient of earth pressure

σ₀ = vertical stress at that point

Example:

Consider the retaining wall of 'H' and length 'l'

Vertical stress at bottom of retaining wall, σ₀ = (γH)

Pressure, P = kγH

i.e., P ∝ H

Therefore, the earth pressure is proportional to depth of soil

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