To vent or not to vent that is the question?

[tungularafishcamp]

Well you'uns convinced me, I will do a double vent and just cap off the low one in winter and maybe both when it gets really cold. Thanks,
Will make it 8x12 with a 8x4 outer room with 5' sidewalls and 7' at the peak.
Now am contemplating weither to use salvaged metal roofing that I have or buy treated 3/4 inch plywood 50$ a sheet before shipping ouch . I have a bunch of herculite that I got off the slope to cover it with before I back fill with sand/gravel and then the top layer of dirt/sod.
I have a bunch of 4x4 cedar that I beachcombed for studs/joists and was wondering if 18"centers was enough or bring them in to 12"? Have never built underground before so am open to all suggestions.
Thanks,
Rick

 

[tungularafishcamp]

How bout it folks any input on if old steel roofing would work and how close to make the studs/rafters. I needed some dirt to mix into the compost heap and started digging a couple of days ago where I want to put the root cellar and ran into really firm clay about 3 feet into the hill. I cut a vertical trench into the clay and gonna see what rain and time do to it. It seems really stable so I might not have to worry about stuff sluffing off much at all when I dig it.
Rick

 

[jonyyuma]

I don't know about your moisture, but you might try a big piece of PVC pipe for a stack. Set it low and close to the floor or use a 90 angle on the end. Cap it with a plastic cap when you don't want a vent. This would cause it to draw low, pull off moisture and or odors, without a lot of heat loss? Our storm/ root cellars used to always be moist and smell earthy..even with cement blocks and paint.