Cast Iron Pipe and Fittings


7.2.6.1. Cast Iron Drainage and Vent Pipe and Fittings

  1. Drainage piping, vent piping and fittings made of cast iron shall be certified to CSA B70...
  2. Cast iron soil pipe and fittings shall not be used in a water system.


7.2.6.4. Cast Iron Water Pipe

  1. Cast iron water pipes shall conform to ANSI / AWWA C151/A21.51...
  2. Cement mortar lining for cast iron water pipes shall conform to ANSI / AWWA C104/A21.4...
  3. Iron fittings for cast iron or ductile-iron water

pipe shall conform to ANSI /AWWA C110/A21.10...

  1. Rubber gasket joints for cast iron and ductile-iron pressure pipe for water piping shall conform to ANSI / AWWA C111/A21.11...


7.2.6.3. Threaded Cast Iron Drainage Fittings

  1. Threaded cast iron drainage fittings shall conform to ANSI B16.12...
  2. Threaded Cast Iron drainage fittings shall not be used in a water system.


7.2.6.5. Screwed Cast Iron Water Fittings

  1. Screwed cast iron water fittings shall conform to ANSI B16.4...
  2. Screwed cast iron water fittings used in a water system shall be cement-mortar lined  or galvanized.
  3. Screwed cast iron water fittings shall not be used in a drainage system



7.2.6.6. Screwed Malleable Iron Water Fittings

  1. Screwed malleable iron water fittings shall conform to ANSI B16.3...
  2. Screwed malleable iron fittings used in a water system shall be cement-mortar lined or galvanized.
  3. Screwed malleable iron water fittings shall not be used in a drainage system


7.3.4.5.(1)(c) Cast iron pipe is supported

  1. at or adjacent to each hub or joint,
  2. at intervals not exceeding 3 m,
  3. at intervals not exceeding 1 000 mm if the pipe has mechanical joints and the length of pipe between adjacent fittings is 300 mm.

7.3.3.3.(3)
Cast iron soil pipe and fittings shall not be welded.

Cast Iron Joints

The hammer and chisel method is not recommended for cutting centrifugally spun pipe as it tends to crack or shatter the pipe. Before assembling a joint, each hub and spigot should be sounded using a ball pin hammer to detect fine cracks. Before making the actual cut, the cutters must be aligned square to the barrel of the pipe.


7.3.2.1. Caulked Lead Drainage Joints

  1. Every caulked lead Drainage joint shall be firmly packed with oakum and tightly caulked with lead to a depth of at least 25 mm.
  2. No paint, varnish or other coating shall be applied on the lead until after the joint has been tested.
  3. Caulked lead drainage joints shall not be used except for cast iron pipe in a drainage system or venting system, or between such pipe and
  1. other ferrous pipe,
  2. brass and copper pipe,
  3. a caulking ferrule, or
  4. a trap standard.




7.3.2.8. Cold-Caulked Joints

  1. Cold-caulked joints shall not be used except for bell and spigot pipe in water system, a drainage system or a venting system.
  2. The caulking compound used in cold-caulked joints shall be applied according to the manufacturer's directions.
  3. Every cold-caulked joint in a drainage system shall be firmly packed with oakum and tightly caulked with cold-caulking compound to a depth of at least 25 mm.
  4. Every cold-caulking joint in a water system shall be made by tightly caulking the entire depth of the socket with caulking compound.





PC-4 and Oakum Caulked Joints

Coil the length of PC-4 in the palm of the hand and sprinkle it with water. Using a yarning iron, yarn the dampened PC-4 into the joint and then caulk with the flat-bladed packing iron using the hammer. After caulking is complete, dampen the surface of the PC-4 and smooth with a packing iron to give the joint a finished appearance.

7.3.4.8. Compression Joints

  1. No compression fitting connecting to plain end pipe or tube shall be used in a plumbing system unless the pipe or tube and fittings are sufficiently stayed, clamped, anchored or buttressed so as to prevent separation during normal service of the system for surge pressure.





Insert the bi-seal gasket into the hub and tap into the place using a hammer. Inspect the spigot end for rough edges. Using the brush, apply lubricant to the inside of the gasket and to the spigot end of the pipe. Mate the spigot end to the gasket. Attach the pipe puller and force the spigot into the hub until bottomed.


7.3.2.7. Mechanical Joints

  1. Mechanical joints shall be made with compound elastomeric couplings or rings held by stainless steel or cast iron clamps or contained within a compression or groove and shoulder type mechanical coupling.




7.2.10.4. Groove and Shoulder Type Mechanical Pipe Couplings

  1. Groove and shoulder type mechanical pipe couplings shall conform to CSA B242, "Groove and Shoulder Type Mechanical Pipe Couplings".
  2. Mechanical Couplings for DWV and Sewer Pipe shall be certified to CAN/CSA-B602, "Mechanical Couplings for Drain, Waste, and Vent Pipe and Sewer Pipe"