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so you have an understanding what we can do ….the
right way!
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Installation Standards
It might be necessary to protect building sewers or effluent sewers from freezing by a frost
box, culvert or other equivalent means, particularly if there is less than 1.2 m (4′) of soil cover
where it crosses under a ditch, driveway or path.
Piping for effluent sewers must not have a nominal pipe size smaller than 7.5 cm (3″).
A 10 cm (4″) building sewer or effluent sewer must have a minimum grade of 1% (1
⁄8 inch per
foot).
A 7.5 cm (3″) building sewer or effluent sewer must have a minimum grade of 2% (1
⁄4 inch
per foot).
The BC Plumbing Code specifies that:
(1) a building sewer must not change direction or slope between the building and
public sewer or between cleanouts, except that pipes not more than 6 inches in size
may change direction
(i) by not more than 5º every 3 m, or
(ii) by the use of fittings with a cumulative change in direction of not more than 45º
(S. 7.4.7.1), and
(2) the size and spacing of cleanouts must conform to the following table (S. 7.4.7.2):
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More Installation Standards
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Table 6-1: Cleanout sizing and spacing Size of Drainage Maximum Spacing (metres) Pipe (inches) Minimum Size of Cleanout (inches) One Way Rodding Two Way Rodding < 2.5 Same size as drainage pipe 7.5 15 3 and 4 3 15 30 > 4 4 26 52 To prevent damage or dislocation of piping during and after backfill, backfill must be carefully placed and be free of stones, boulders, cinders and frozen earth.
Any plastic piping connected to a septic tank, holding tank or packaged sewage treatment plant must not be less in wall thickness than DWV piping to a point at least 1.8 m (6′) from the tank. The inlet and outlet piping connected to the septic tank is subject to distortion caused by settling of the excavation around the tank. Using heavy wall pipe and close excavation to minimize the distance to undisturbed earth provides an added element of safety.
LandScaping Dawson Creek Photo Gallery
