Chapter 3

Cards (19)

  • 2% Recommended slope for horizontal drainage pipes.
  • 1% Allowable slope for horizontal drainage piping 102 mm or larger in diameter
  • 2 pipe sizes Vertical installation of double sanitary tees may be used when the barrel of the fitting is at least
    larger than the largest side inlet
  • 45° The bottom of all pipe trenches deeper than the footing of any adjacent building or structure and parallel to it must be at least degrees
  • 0.30 m Minimum depth of building sewer below the finish ground level
  • 3 m Maximum spacing of vertical supports for copper tubing.
  • 1.2 m Maximum spacing of vertical supports for lead pipes.
  • 1 m Intervals of vertical supports for plastic pipes.
  • 1.5 m Intervals of horizontal supports for cast iron soil pipes.
  • 3 m Maximum spacing of horizontal supports for CISP exceeding 1.5 meters
  • 0.45 m Supports for cast iron soil pipes shall be placed within of the hub or joint
  • 1.20 m Cast iron soil pipes exceeding shall be horizontally supported at least at every other joint.
  • 3 m Intervals of horizontal supports for screwed pipes 19mm and smaller
  • 3.6 m Intervals of horizontal supports for screwed pipes 25mm dia and larger
  • 1.8 m Intervals of horizontal supports for copper tubing 38mm dia and smaller
  • 3 m Intervals of horizontal supports for copper tubing 51mm dia and larger
  • 0.6 m Clear height of tunnels above the pipe laid in a trench.
  • 1/2 the depth of trench or 2.4 m Maximum length of tunnels.
  • 0.30 m Trenches shall be backfilled in thin layers of above the top of the pipe with clean earth.