Development of a Framework for Design and Installation of a New Lining Material for Water Pipeline Renewal

In a pipeline system, a variety of internal and external factors such as pipe age, diameter, depth, soil condition, and water table reduce the serviceability of the pipeline and increase the risk of pipe failure. Multiple trenchless technology methods can be used for water pipe renewal, such as cured-in-place pipe (CIPP), close-fit pipe (CFT), and sliplining (SL). The design of renewal pipe includes considerations for structural, semi-structural, and non-structural applications considering internal and external pressure. Selection of the appropriate renewal method and lining material can lead to a reduction in the cost of the water pipeline renewal project. Pipe-in Liner is a fabric reinforced flexible plastic pipe (FRFPP), which is a cost-effective semi-structural solution to rehabilitate water, oil, gas, and hot water networks. The objective of this paper is to present design and installation specifications of FRFPP as a new solution to renew water pipeline. The semi-structural design uses the support from the old pipe, and the new liner pipe spans the cracks and holes to eliminate leakage as well as enhances the structural capacity of the old pipe. The installation of the renewed pipe requires proper selection of the renewal method, old pipe conditions, proper planning and preparation, surface and sub-surface considerations, and service lateral connections.