Raft foundation is a type of foundation that is used to support the whole building, where the entire building sits on a large concrete slab, which spreads the weight of the building over a larger area. This type of foundation is used in areas where the soil is weak, and the building is heavy, and it is also known as a mat foundation.
Mat foundation, on the other hand, is used for large structures, such as high-rise buildings, where the weight of the building is spread over a large area. Mat foundation is a thick reinforced concrete slab that extends over the entire area of the building, and it is designed to support the weight of the building and to distribute the load evenly over the soil. The main difference between the two types of foundations is that raft foundation is used for smaller structures, while mat foundation is used for larger buildings, and the size of the foundation can vary depending on the size of the building being constructed.
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