Illustrate the Types of special foundations

Special foundations find use under following situation:

i)  To meet the demands that are arising from uncommon environmental conditions such as for offshore structures, buried structures, vibration or earthquake prone structures etc.

ii)  To  counteract hostile soil conditions such as swelling and swelling pressure characteristics of expansive soils, polluted soils carrying toxic leachates from industrial effluents etc.

iii)  Structures such as bridges, water tanks, silos, chimneys, cooling towers, telecommunication towers, transmission line towers etc.