When using Danby PVC lining as a Renovation System, Danby is a Grouted-in-Place spiral wound PVC liner that 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 highly 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, provides some direct repair of the old pipe. As used for man-entry pipes (> 36″), 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 for reinstating the structural integrity of the line. The cost effectiveness and functional advantages of the Danby system tend to increase with increased diameter.