Several months ago a friend of mine gave me a large quantity of "Q" decking, a very thick metal roofing. I was going to use it to cover my wood piles but several of you suggested that I build a wood shed with it. I really had no plans of doing that but after messing with the 10x4 sheets I found out how much of a pain that was due to their weight so I started giving the idea some thought. I am not a great carpenter so this was a big project for me. I am pleased to say that I just finished today and am very happy with the results. Now I can start processing wood again. The size was determined from the amount of roofing that I had. I wound up with a 30x30 unit with a 1foot drop on the roof. We don't get much snow so I am was thinking that this would be fine to shed water.