I've decided to upgrade my greenhouse from a 10' X 20' to a 17' X 60'. I have been using a 5,500 cu. ft. swamper to keep the temperatures from getting too hot in the summer (live in Las Vegas) which has yielded excellent growing results. I'm able to grow anything I want with a very long growing season (early March through December and year around for cold weather veggies). I've also had a number of raised garden beds outside of the greenhouse which have had varied success depending on the plants. I now want to take everything inside due to the success of growing in the greenhouse. So, my question: is there a cheap and easy to use software out there that I might use to design the greenhouse? In my neck of the woods, the most cost effective materials I know of are the galvanized chain link top rails which I want to form into a hoop house of sorts with straight side walls up to 5' and then arched to meet at the top/center rail with various braces as needed. I'm not great at paper design and would like a simple program allowing for easy design. Anybody know of something like this? Also, any other direction would be appreciated as I begin this new project. Thanks in advance!