- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 14 Sep 2020
Strip foundations (or strip footings) are a type of shallow foundation used to provide a continuous, level (or sometimes stepped) strip of support to a linear structure such as a wall or closely-spaced rows of columns built centrally above them.
Where the natural surface of the ground is sloped, the most economical solution may be a stepped foundation. In this case, the foundation takes the form of a series of concrete horizontal steps following the slope of the ground.
This helps to minimise the amount of excavation and below-ground wall construction that would otherwise be required. Stepped foundations can also be used to transition from deep foundations to shallow foundations, and at corners and intersections.
Regularly stepping foundations also avoids abrupt and excessive changes in level that could cause a weakness resulting in movement. Similarly, abrupt and excessive changes in foundation depths should be avoided at corners and intersections by the introduction of stepping.
Each step in the foundation should be no higher than the thickness of the foundation. The foundation at the higher level should also overlap the lower foundation, typically by at least twice the height of the step, or by the thickness of the foundation, or by at least 300 mm (whichever is greatest).
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
A guide to daylight design for commercial buildings.
Two opposite approaches to cost estimating that can work together.
BSRIA reports on propsects for the US construction industry.
ECA research shows lack of preparation amongst survey respondents.
Smart mapping approaches for building better infrastructure.
The importance of emergency planning.
Eight forms of resource optimisation.
CIOB responds to Chancellor Sunak's announcement on jobs and the economy.
Revised guide to competition rules available.
Brick slip soffit systems and intricate brick features.
An innovative engineering approach could have had tragic consequence for NYC.
Some secrets behind how canals work.