# StructX > Resources > Soil & Foundations > Soil Stress Distribution

## Assumptions and Limitations

The following assumptions and limitations have made the provided soil distribution formulas possible. The links below also contain additional information and/or resources for further reading.

- The soil is weightless, linear elastic, isotropic and homogenous
- The soil has a plane horizontal surface
- Any loads are concerntrated at the surface and act vertically and perpendicular
- The depth of the soil is large compared to the dimensions (semi-infinite)

# Boussinesq's Point and Line Loads

Central Point Load

Offset Point Load

Multiple Point Loads

Offset Line Load

# Strips and Embankments

Offset UDL

In Line UDL

Above UDL

Central UDL

Offset UIL

End In Line UIL

Central UIL

Start In Line UIL

Embankment

# Circular and Rectangular Loaded Areas

Central Circle

Offset Circle

Rectangle Corner

Foundation - Approximate

Any Shape

# Westergaard Type Materials (Layered Soils)

Point Load

Central Circle

Rectangle Corner

# Rotation of Rigid Footings

Infinite Layer - Ridgid Rectangle

Infinite Layer - Ridgid Circle

Finite Layer - Ridgid Circle