The raft slab is projected beyond the outer walls of the structure by A. 5 to 10 cm B. 15 to 20 cm C. 25 to 30 cm D. 30 to 45 cm

The correct answer is A. 5 to 10 cm.

A raft slab is a type of concrete foundation that is used to support heavy loads. It is a continuous slab that is poured on the ground and extends beyond the outer walls of the structure. This helps to distribute the weight of the structure evenly and prevents it from sinking into the ground.

The amount of projection beyond the outer walls of the structure depends on the type of soil and the weight of the structure. In general, the projection should be at least 5 to 10