New Greenhouse

I've decided to tear down my old hoop style growhouse/greenhouse and build something sturdier. The old one was in the shape of a quanset hut. The problem was snow accumulated on the clear plastic and eventually ripped the plastic. I'm going to build a greenhouse structure made of 2X4's and the polycarbonate plastic. It has a steep pitch that should dump the snow. I've got a gas heater to go inside.