12 Inch Ductile Iron Pipe End Capped – Two Yard Concrete Reaction or Thrust Block Poured and Driven Steel Pipe centered to hold the concrete in place…….
Thrust blocks in water mains are created in the following ways:
Where the pipe changes direction horizontally or vertically;
where the pipe changes in size;
at dead ends;
at restrictions; and,
when valves or hydrants are closed quickly.
Thrust blocks are used at these locations to prevent damage to the pipe caused by unsupported pipe movement. Tees, bends, plugs, hydrants, and other appurtenances and fittings require thrust blocks to restrain the pipe. If thrust blocks are not provided, the pipe would be free to move causing joint separation, leakage, and damage to other connected structures or pipes.