Building a greenhouse

Ok, so I kind of lost focus on my blog. I have not posted here in almost a year. Last years crop of 80+ varieties with 1500+ plants did not survive. My job forced me to work in a different part of the country for almost the entire summer. Unfortunately, most of my plants were not put in the ground and ultimately died. This year will not be the same. I am building a 12'x12' greenhouse of of PVC pipe this year. I have a plan that I found on the web at http://www.pvcplans.com/ArchGrnHouse.pdf