Progress Report Nov. 5 Pipeburst Oct 28 Pipeburst Oct. 17 Pipeburst Oct. 10 Preparations			Please note: This is an informational web site, provided by the Engineering Firm, UMA Engineering Ltd., and the contractor, PW Trenchless Construction. Although we strive for accuracy, this is a project very much under constructions with updates when needed to inform residents of the area of any information that comes up. Please check back regularly for more information.
		Kingsley Cr. The west end of the project October 17, the day of the first burst. Mouse over the above image to see the before version.
		Kingsley Cr. The midpoint of the PipeBursting. To the right side of the little brick wall is the combined entrance pit. This entrance pit will also be used for the next burst which goes to the East.
					This is a fairly typical exit pit/winch set-up. The "pulley mast" of the winch is lowered down the manhole and the cable is pulled up the existing pipe (it is called the "host pipe") and attached to the bursting head. There is a heavy steel shoring cage in the exit pit and a timber braces the Pulley mast against the tension of the cable.
	Although this 120m burst did not go completely smoothly, PW Trenchless has the experience and expertise to diagnose the problem, correct it and complete the burst. This burst started at 2m deep and ended up with a depth of 2.7m at the exit pit. The "host pipe" was light walled 8"(200mm) and was replaced with thicker stronger pipe of the same diameter. The burst was progressing rapidly and with only 20m to go the bull hose unexpectedly failed. The head was dugout, unbolted from the pipe and then the remaining 20m was bolted onto the head and the burst resumed from the retrieval pit.
	This hose is connected to the back of the bursting tool. It failed with approximately 20m to go. The power for the bursting tool comes from this compressor. The failure of the hose means digging out the head, replacing the hose and then finishing. A worker guides the backhoe operator to carefully dig around the pipe and burster head. Workers prepare to lower a shoring cage into the retrieval pit. The manhole has a "window" cut through it for the product pipe to pass during the burst. This photo shows the upstream side of the manhole/entrance pit. This shows the product pipe on the downstream side of the entrance pit as it enters the host pipe. The exit pit with it's heavy steel shoring cage and timber to brace the pulley mast. Three workers are needed to pull out the 120m of 3" air hose after the bull hose failed. This is typical for the service connection. An excavation is dug and prepared with a cage before the burst. After the burst the new pipe is quickly drilled and a tee is installed and the house service is reconnected. This truck and trailer allows PW Trenchless to quickly and efficiently set-up and move all its equipment.