Building Construction
Raft foundations are used for:

Counter acting the hydrostatic effect
All listed here
Spanning over small soft or loose pockets
Providing increased area of foundation over poor bearing capacity of soil

ANSWER DOWNLOAD EXAMIANS APP

Building Construction
Auger boring

Is generally employed in cohesive and other self soils above water table
Is most economical up-to a depth of 5 meters
Is the most primitive method for making a hole in the ground
All of these

ANSWER DOWNLOAD EXAMIANS APP