Question

differ between screw pile and disc pile​

Answer 1

Similar to a screw pile, a disc pile consists of hollow metallic pipe attached with a cast iron disc to its foot so as to enlarge the bearing area of the pile. There is a hole at the bottom of the pile to permit the water jet pipe to pass through during the sinking of the pile by jetting.

Answer 2

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Here is your answer -

Screw Pile

A screw pile consists of a cast iron or steel shaft of external diameter normally varying from 15 to 30 cm and terminating into a helix or screw base. The pile shaft maybe hollow or solid. The diameter of the screw at its base varies from 45 cm to 150 cm. The pile is sunk by screwing the pile down inside the ground by use of an electric motor. Screw piles function most efficiently in soft clay or loose sand. In such a ground it is easy to install the piles and also the large bearing area provided by the screws makes the best use of the low bearing capacity of the soil.

Disc Pile

Similar to a screw pile, a disc pile consists of hollow metallic pipe attached with a cast iron disc to its foot so as to enlarge the bearing area of the pile. There is a hole at the bottom of the pile to permit the water jet pipe to pass through during the sinking of the pile by jetting. Disc pile can he used only in sandy or soft soils which may permit sinking of the pile by water jets. Disc piles are used mostly in marine installations, where the total penetration of the pile in the ground is required to be large.