The house i bought has a sink hole with manhole over it. 55-58f air is coming out of the hole and so I'm trying to think of ways I can use the warmth to my advantage. I'm at least thinking that I could rig some sort of covering or transparent tent to overwinter some plants. Any suggestions for what I could use? I don't even know what all materials I could use for the greenhouse effect. is it even feasible to think I could make some use from the warmth coming from the ground.
by mrknowitnothingatall
7 Comments
looks like a sewer vent. gas buildup may be a problem. build over it and report back
Full send.
lol I would not, but you do you boo. It’s vented for a reason & blocking it then breathing it all in hahaha no thank you!
you’re going to want to build an earth tube system. you can find details at /offgridgreenhouse
I know I’m being a stick in the mud but there’s almost certainly an easement or a city law allowing them access and not allowing you to build on top of their manhole cover for their giant storm sewer project
If that is storm sewer, you should be OK gas-wise, but that’s presuming everyone is following the rules. YOu know that scene in National Lampoons Christmas Vacation where the cousin Eddie is emptying his RV sewage tank into the storm drain and later it blows up lol. A comical demonstration of the concern.
You could throw caution to the wind on that (shrug). But I do think storm sewers back up enough that the air is at least foul smelling frequently enough. It’s going to have a different nature throughout the year if you’re in a four seasons environment.
A greenhouse isn’t exactly a tight envelope, so even if some foul gas comes up some day(s), the greenhouse will nevertheless vent the gas at *some rate,* hopefully enough so that it can’t harm anyone or blow up.
Lastly, whether that air will substantially heat a greenhouse depends on 3 more factors: the size of the greenhouse, its draftiness and insulation, and also your atmospheric climate/USDA zone.
This has “bad idea” written all over it. I wouldn’t.