Why would someone have two 3 to 4 foot high white pipes coming out of the ground with a elbow pipe on top?
Question:The pipes are about a foot beside of the house kinda hidden?
Answers:
Venting (and access) pipes for the sewage system. ~
ventillation? maybe they have an underground bunker or something! that would be cool!
They are watching you through and underground lab..hahahah...NO, seriously, they are for ventilation
If the pipes turn down its probably air intake for a basement maybe?
Could be ventilation. Could be cleanouts for storm or sanitary lines - lazy contractor didn't have caps. TV the line and see where it goes. Can you find other ends in your basement??
My guess is that they are trying to vent some sort of gas. Could be radon, though the pipes should be higher so the gas isn't around where people would normally be.
I've seen several landfills with these pipes to vent methane gas after the landfill is capped. As the garbage decays, methane is created, but it has trouble escaping due to the cap, leading to problems when the pressure gets too high. Not sure if you'd have these near houses, but I suppose it depends on what the land was used for before the houses were built.
Those are my two guesses.
Same question, same answer.
My guess would be an intake and exhaust for a high-efficiency gas furnace.
The fact that there are two make the idea of it being a plumbing vent unlikely -- no reason for two that close together.
Everyone forgot about underground fuel tanks for the furnace? The vent pipes.
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