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uPVC Pipes

Stoneware or Vitreous clay was the principal pipe material for sewer systems until the late 1970s. uPVC pipes have penetrated the market since the 1970s and these pipes are now the principal pipe materials used in sewer systems in developed countries. Installation of uPVC pipes relies on the correct placement and compaction of the pipe zone fill material. It is particularly important for trenches in rock or where the native soil contains material which may cause point loading. As uPVC behaves structurally as a flexible material it is reliant on the pipe zone fill material for structural support, uPVC pipe is not recommended for use in locations where there is risk of interference damage after installation

Advantages of uPVC pipes

  1. The main advantages are their relatively light weight, ease of handling and laying and simple jointing technique and resistance to chemical attack.
  2. uPVC pipes can be used for both gravity and pumping main applications.
  3. Each pipe is usually of 3.0 m or 6.0 m in length as standard and they will have fewer joints in any length of pipeline comparison to SW and RCC pipes. Hence they are not so susceptible to infiltration when laid below water table.
  4. The installation of uPVC pipes is faster especially under water conditions
  • Disadvantages of uPVC Pipes
  1. uPVC is sensitive to point loads and to impact and ftigue loading
  2. It should be handed with care to avoid surface damage.
  3. Internal scratching is more critical than external scratching, hence care should be taken not to nest pipes inserting smaller diameter pipes into larger diameter pipes during storage and transit.
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