Question: What are the types of raft foundation?

What is the purpose of raft foundation?

The principal aim of a raft foundation is to spread the load of the building across the entire available surface area under the building. This reduces the stress on the ground below, providing a solid foundation that can accommodate ground movement whilst still maintaining structural integrity.

What is foundation spread?

Spread foundations are foundations at shallow depths of burial where the ground resistance on the sides of the foundation does not contribute significantly to the bearing resistance. Some of the provisions in this Section may also apply to deep foundations, such as caissons and piers[C6.

What is the minimum depth of raft foundation?

The minimum thickness of raft foundation is 300mm.

What is the difference between raft and pile foundation?

Difference between raft and pile foundation

The raft foundation or mat foundation is a prominent example of a shallow foundation. On the other hand, the pile foundation is an example of a deep foundation. This is one of the first and the most general point of difference between these two types of foundations.

What is the difference between strip and raft foundations?

Strip foundation is used to support a line of loads such as load-bearing walls. … Raft foundation consists of a concrete slab which extends over the entire loaded area so that loads from entire structure are spread over a large area leading to a reduction of the stress of foundation soils is reduced.

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What type of foundations are there?

There are five main foundation types and a handful of important variations.

  • Basement Foundation. …
  • Crawlspace Stem Walls. …
  • Concrete Slab Foundations. …
  • Wood Foundations. …
  • Pier and Beam Foundations.