Correct option is C
Definition of Tremie Pipe:
A tremie pipe is a long steel pipe used to place fresh concrete underwater or at deep depths.
The tremie method ensures that concrete is placed without segregation or washing away by water.
Working Mechanism:
The tremie pipe is filled with concrete, and the bottom of the pipe remains submerged in the fresh concrete during the placement process.
This technique creates a continuous flow of concrete and minimizes disturbance to its mix.
Pumping Pipes: Used for pumping concrete horizontally or vertically but not specifically for underwater concrete placement.
Transaction Pipe: This term does not apply to construction or concrete placement.
Down Pipe: A generic term, but it does not refer specifically to the tremie system for underwater placement.
