Here is my shed I built in the fall using just 2x4 construction. I chose 2x4s to maximize the space that I had and to keep everything low profile for aesthetics. Everything is glued, screwed, laminated and PT. The base is double laminated rim and joist with PT plywood on top. The slats and trim are 1" Smart Trim and color matched to the shed and house. Triple header beams and 45° bracing for stability. Corrugated asphalt roofing with 16" spaced strapping. It turned out really good and is super strong. I live in rural Canada with moderate to heavy snow fall and don't anticipate any issues. It is 8' x 12' and calculated to hold 5 cords.