I have an outdoor shed that has a high pitched roof that will allow an upper floor to be added. The pitching starts at 10 feet. To lay a floor down, what size crossbars should I lay down left to right so that I can place plywood on top of this that will provide good stability for support. The floor will contain boxes and overflow items, but not heavy items such as machinary.
Are 2 X 4 beams heavy enough, and if so, how far apart should they be? I assume 3/4 inch plywood is acceptable as the floor on top of the plywood.
Thanks
2006-12-07 14:12:22 · 5 answers · asked by nathan_strahl 1 in Home & Garden ➔ Do It Yourself (DIY)
This would depend on your span but definitely install the joists in the same direction as your rafters to help tie your building together. Any loading you get on your roof, like snow or even heavy winds, will want to push down on the roof which could push the top of the walls outward. I've seen it happen.
Back to your question, the loading only really needs around 20 pounds per square foot for your proposed storage area. 2x4 joists will span about 12 ft while 2x6 will span 16ft @ 16"c/c. The type of floor sheathing you use will have no bearing on the span.
Good luck
2006-12-09 03:10:16 · answer #1 · answered by Building Inspector 2 · 2⤊ 0⤋
Bill W is right if it is a short span. You never said what it was or how much total weigh at a given time people and box's. With 10 feet to play with I would go with the 2x12's and a support runner on each end. They have medal ties for the end of your 2x4, 2x10 and 2x12's even if you place them on the headers of your walls. I would go at the stander 16" centers or one on next to or over every wall stud. Stop into a lumber yard and they can help you with all the fine details. The 3/4" plywood is fine but you might save some money with a waferboard plywood. Don't use the presswood plywood.
2016-03-13 04:32:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
go in the same direction as the rafters at 16" on center will hold about anything thats what's used in houses
2006-12-07 14:20:55 · answer #3 · answered by ? 2 · 0⤊ 0⤋
2x6s would be better if you have to get up in there, but yellow pine 2x4s will suffice (no big knots), depending on the span.
2006-12-07 14:16:00 · answer #4 · answered by normobrian 6 · 0⤊ 0⤋
to be safe i would use 2x6 beams on 16" centers .then use half inch plywood for your floor
2006-12-07 14:43:12 · answer #5 · answered by leng1961 1 · 0⤊ 0⤋
12,000 Shed Plans : http://GuideInfos.com/Go
2015-08-12 01:11:46 · answer #6 · answered by Luci 1 · 0⤊ 0⤋