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Foundation is the part of a structure on which the building stands. The solid ground on which it rests is known as the foundation bed. Why a Foundation is Provided. Foundation should fulfill the following objectives: Distribute the weight of the structure over a large area of soil. Avoid unequal settlement. Prevent the lateral movement of the ...
Foundation is the lowest part of the building or the civil structure that is in direct contact with the soil which transfers loads from the structure to the soil safely. Generally, the foundation can be classified into two, namely shallow foundation and deep foundation.
Jun 22, 2023 · A Raft foundation is a type of shallow foundation made of a densely reinforced concrete slab covering the total area of the bottom of a structure. In some instances, the slabs are used at the bottom and the beams at the top.
- Raft foundations are used when the soil has a low bearing capacity and the load is to be distributed over a large area. It can be used when there a...
- Raft Slabs do not have excavated footings as compared to the conventional slab, which has footings.
- the thickness of Raft foundations is typically fixed between 150 mm to 300 mm.
- The minimum size of the raft foundation is 3m x 2m. Notably, the longer dimension should be less than 1.5 times the shorter dimension.
- Using piles with a raft foundation increases the effective size of the footing and thus aids in resisting the horizontal loads. This can also help...
- Raft footings come under shallow foundations.
Procedure for construction of foundation starts with a decision on its depth, width, and marking layout for excavation and centerline of foundation. Foundation is the part of the structure below the plinth level in direct contact of soil and transmits the load of superstructure to the ground.
Foundations are classified as shallow and deep foundations. Types of foundations under shallow and deep foundations for building construction and their uses are discussed. It is advisable to know the suitability of each type of foundation before their selection in any construction project.
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1. Providing level structure: Foundation gives the structure the ability to stand on the ground. Without the foundation bed being strong, it is bound to fall. The stronger the foundation, the more stable the structure. 2. Distributing weight of the structure:
