What is the minimum depth for foundations?
Subsequently, one may also ask, what is the minimum depth of foundation?
Similarly, how deep is the foundation of a 3 story building? Foundation walls for three (3) story buildings over 25' 0" in height shall be a minimum of twelve inches (12") in thickness.
Beside above, how deep should single storey foundations be?
For a single storey building strip foundations will typically be 450mm wide and at least 200mm deep, and for two storeys 600mm wide and 200mm deep.
What determines the depth of a foundation?
Many factors affects the depth of foundation. such as type of soil, ground water table, loads from structure, bearing capacity and density of soil and other factors. The minimum depth of foundation is calculated by Rankine's formula when the bearing capacity of soil is known by soil investigation report.