It's not built with trusses. They use square tubing, I'd say almost 3" square and a very heavy gauge. The roof is corrugated aluminum, heavy gauge also. You can get optional sides, garage doors, windows etc. Right now I am still going wide open. I can always add the rest later. The building is all open in the middle. I went to where they are made and I was very impressed with how solid they are. They also come with a 20 year guarantee, and that includes blowing over in the wind. They seem to be well installed. I guess they would have to be with that guarantee. I'll be glad to post a photo as soon as it's installed. There may be someone near you that does them too. I see you're in MD which isn't too awful far from Va. You maybe could work something out with them, but as I say they are local. If you have any more questions, please feel free!