Displacement load in soil is due to the pressures exerted by the load force. The distribution of stresses in the soil must be known for realistic estimates of the displacement caused by the applied load on the supporting soil.

The following methods can be used to estimate the stress distribution of the soil for the applied load: **Why** at the focal point of an area. Practical calculations of settlement are based on these estimates of the stress distribution.

## approx 2:1 distribution

An approximate stress distribution assumes that the total applied load on the soil surface is distributed over an area of the same size as the surface loaded area, but increases by an amount equal to the depth below the surface with dimensions, **Figure 1**,

at depth **jade** Total weight in feet below ground surface **Why** The tonnage applied by a structure to the surface of the ground is considered to be uniformly distributed over an area **(b + z)** By **(L+Z)**, vertical pressure increase **DS**** _{jade}** in units of tsf at depth

**jade**for an applied load

**Why**is given by

**DS**_{jade}** = Q / [(B + z) * (L + z)]**

Where,

**b** And **Took** The width and length of the foundation are in feet respectively.

**DS**** _{jade}** There is an increase in vertical pressure due to construction.

The vertical stress calculated by the above equation reasonably agrees with Boussinesq’s method.

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