What is a Pile Raft The piled raft is a foundation constructed by combining both the piles and a raft foundation. Firstly, the piles are constructed and then the raft is placed combining all the piles Interaction of the pile, soil, and raft is the key factor considered in designing the piled raft foundation. The efficient use of the interaction leads to end up with the economical design Otherwise, as discussed in the latter part of this article, could not be an economical construction Therefore, the following interactions are incorporated into the design Pile-Soil Interaction Pile -Pile Interaction Raft-Soil Interaction Pile-Raft Interaction The following factors are known as important to consider when designing of piled raft foundation Number of piles to be used Diameter of the piles Length of the piles Pile spacing ratio Location of piles Stiffness of piles Stiffness of Raft Raft dimensions Soil type and stiffness of the soil Load distribution over the p...