Raft or Mat Foundation
Raft Foundation is such a Foundation that covers the entire area under the structure. Raft foundation is also known as mat foundation because in this foundation RCC slab covers the entire area of the structure as Mat does. Before starting any construction, we need to understand what would be the best and most economical foundation method for a particular site.
When the heavy structure is to be built on soft soil, made-up ground, mining area or marshy sites, Raft or Mat foundation is considered to be the most suitable and economical method of foundation. This Foundation may have only RCC slab covering the entire area or it may be a system of slab and beams with slab at the bottom and beam above it.