Building an upper floor on an outdoor shed.?

Question

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

Are the 2 X 6 beams laid such that the plywood sits on the 6" side or on the 2" side?

Answer 1

2 x 4 beams will work if the width is only like 6 ft. any more than that use 2 x 6 or 2 x 10 the plywood u selected is just fine. screw down plywood verses nails so your floor don't squeak space the beams 15 inches apart

Answer 2

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.

Answer 3

With the info you have provided, 2" x 6" on 16" centers would work fine. 3/4" plywood is more that sufficient. I would be carefull about using particle board because if it gets wet it will start to separate. To answer your other question, if I understand you correctly, you would attach the plywood to the 2" side. All your strength is on edge, if you laid the joists flat (the 6" way) you would have no strength. Good luck!!!

Answer 4

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