Healthy soil and sustainable growing

[mobius <mobius@mainestream.us>]

On 12/23/2013 2:08 PM, tradingpost wrote:

52B88A2D.4040803@lobo.net" type="cite">My greenhouse plastic is 10x100 ft 6 ml uv roll. Uprights & rafters spaced 4ft apart. With about 30 deg pitch it holds up for years under +- 1 ft snow load, properly fastened to the wood. For that I use a 2" wide clear filament tape over the plastic, stapled to the wood on edges, 1/2" staples with air stapler. 4 ft sections covered one at a time.

LOL  Even a real roof won't hold up the snow here with rafters 4' apart.  We sometimes get 10ft or more over the course.  It compacted to 5ft but the dogs could just step right over the fence. 

Might be warm under all that snow, but no sun of course.  ;o)

Does that 30 deg pitch shed?  Looking at my house, the 40 d roof sheds well, the 33d less so.  That's why I was thinking more perpendicular, maybe 75 d or so.
I don't want too many rafters to block the light.