Technical Information
Summary
Use of the Danby Pipe Renovation System produces a renovated pipe which is a layered composite of PVC liner, cementious grout, and the original pipe. The combination of the ribbed profile on the PVC Liner and the very fluid nature of the grout produce a highly integrated structure with the PVC liner “tied” to the original pipe through the grout which, in addition, provided additional load carrying capacity as well as some direct repair of the old pipe. For man-entry pipes, the structural strength of the renovated pipe is determined almost entirely by the grout characteristics and, of course, the condition of the old pipe. In this case, a wide range of design options are applicable to reinstating the structural integrity of the line. The cost effectiveness and functional advantages of the Danby System tend to increase with increased diameter. Design for structural repair is project specific following rigid pipe design practice.