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The following is the classification of Cement Concrete Pipes according to
IS : 458 [Khanna, 1995].
Source : Khanna's Hand Book of Civil Engineering (1995)
Cast Iron Pipes (C1 pipes)
Cast iron pipes are extensively used for water mains because of its durability,
good strength, low cost of maintenance. They can be used upto a maximum
working pressure of 130 metres of vertical head and upto 1000 mm of diameter,
above which steel pipes or RC pipes are used. Disadvantages of cast iron
pipes are heavy weight, high transportation cost, high cost of laying and jointing.
Cast iron pipes are also subjected to corrosion when hard water flows through
them due to calcareous incrustation causing obstruction during flow causing
loss in discharge. Life of cast iron pipes may be more than 200 years, but when
laid in chemically impregnated soils the life may be less than 30 years.
