Static Pipe Bursting
Definition - What does Static Pipe Bursting mean?
Static pipe bursting is a trenchless rehabilitation method that replaces damaged pipes without having to physically remove them. The process can be carried out from pit to pit, bypassing manholes in between. In busy streets and under yards and sidewalks, static pipe bursting has proven to be very efficient because it doesn't affect any other utility lines in the vicinity.
This method can also be used to increase the capacity of pipelines.
Trenchlesspedia explains Static Pipe Bursting
The static pipe bursting technique involves the use of bursting rods, cutting blades, a conical expander and the product pipe. The bursting rods are inserted from the start pit one at a time by attaching it to subsequent rods till the rod string reaches the target pit. At the target pit, the cutting blade followed by the expander and the product pipe are attached to the rod string.
The string is now pulled back to the start pit. As the cutter blades enter the host pipe it cuts the pipes into pieces which the expander following it pushes into the surrounding soil. The product pipe replaces the space created by the expander and the new pipe is installed simultaneously. This method can be used to replace cast iron (CI), ductile iron, steel, plastic and other fracturable pipe materials.
Substantial lengths of pipe can be replaced at one go and requires minimal crew size.