Wetout

The process of injecting resin into, and distributing it throughout, a hose or tube which will then be installed into the pipeline and cured in place.

Wetted Perimeter

The length of the perimeter in contact with the water. For a circular pipe of inside diameter “d”, flowing full, the wetted perimeter is the circumference, d. The same pipe flowing half full would have a wetted perimeter of d/2.

Winch

Mechanical device used to pull the CCTVClosed circuit television used to carry out internal inspection and survey of pipelines. cameras or cleaning tools through a sewer pipe.

Wing Cutters

Appendages on cutting heads that will open to increase the cutting diameter of the head when turned in a forward direction, and close when turned in a reverse direction. They are used to cut clearance for the casing pipe.

Work

Any and all obligations, duties and responsibilities necessary to the successful completion of the project assigned to or undertaken by contractor under the contract documents, including all labor, materials, equipment and other incidentals, and the furnishing thereof.