![]() HDD allows the entire water supply and drainage system of a city to be replaced without causing a major traffic jam and incurring the enormous cost of restoring streets and roads. Horizontal directional drilling (HDD) is a trenchless construction method used to install pipelines of various sizes and materials below the ground surface. Trenchless methods for new installation of underground piping Given below are the different trenchless methods used for the new installation & restoration of underground piping. Intersecting roads, rail tracks, rivers and construction sites are virtually unaffected by the work and there is no need to divert traffic, which can be complex and costly. With the trenchless method, a shaft only needs to be dug at the start and end of the section of the pipeline. The method comprises techniques, materials and equipment used for the installation of pipelines and cables below the ground with minimal excavation. The trenchless construction methods can be used for the new installation or restoration of existing underground piping infrastructure with minimal disturbance to surface traffic. ![]()
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