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jrsms
Nov 17, 2010, 10:11 AM
I notice my neighbor is adding a light blue plastic pipe at the foot of his retaining walls. Is this different than regular PVC drainage pipe?
massplumber2008
Nov 17, 2010, 02:53 PM


Could you be speaking of a blue SDR 35 pipe..see image?

If so, this is an exterior drainage pipe used by many municipalities to run sewer/drain pipes to within 10 feet of a building....has an increased flexibilty (not so brittle) and has a gasketed seal which allows for expansion/contraction/ground movement...;)

Closer than 10 feet to the building and the sewer/drains belong to the plumber and he transitions from the SDR 35 pipe to regular PVC and brings it into the home nowadays...;)

Questions? Let me know...

Mark