Soil Mechanics and Foundation Engineering - Engineering

Q1:

The minimum depth of building foundations on

A sandy soils is 80 cm to 100 cm

B clay soils is 90 cm to 160 cm

C rocky soils is 5 cm to 50 cm

D all the above.

ANS:D - all the above.

"all the above" is correct. The minimum depth of building foundations can indeed vary depending on the type of soil, whether it's sandy, clay, or rocky. Each type of soil has different characteristics that affect the stability and load-bearing capacity of the foundation, hence requiring different minimum depths for construction.