Case Study
Findings of an in-depth economical comparative analysis with routine NP3 Reinforced Concrete conduit system & alternative Double Wall Corrugated ( DWC ) HDPE Piping Network:
  • The price comparison reveals that the Direct Capital cost for the Typical Sewerage Zone with Gravity Flow collection system comprising of Double Wall Corrugated ( DWC ) HDPE Pipes (inclusive of cost of sewage lifting stations) is significantly lower than the system designed with RC NP3 pipes.

  • Fewer Sewage Lifting Stations due to favorable sewer hydraulics when using Double Wall Corrugated ( DWC ) HDPE pipes

  • Considerable reduction in annual maintenance costs and replacement cost. Least cost analysis shows the Present Amortized value of the Project with Double Wall Corrugated ( DWC ) HDPE Pipes shall be decisively more Economical in comparison to routine Non-Pressure Networks.
  • Additionally there are Socio-environmental benefits due to reduction in the installation time on account of weight & ease of handling/ transportation/ laying.


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