Builders will often tout one way or the other as the best way and i will use this space to talk about some of the perceptions myths and facts about.
2x4 vs 2x6 for floor joists of storage shed.
Moving to 16 on center you could span your spf 2x4s up to 6 for heavy loads and 9 for light loads which would still work with a 12 12 gable shed.
The 10 and 12 wide buildings have 2x6 floor joists 16 o c.
I d bump up to 2 x 8 joists if you go the 8 x 10 route.
For a shed you re generally okay with 24 centers rather than 16.
All our sheds are mounted to 2 double 2x6 treated skids.
Wide sheds have 2x4 floor joists 16 o c.
A gabel roof using 2x4 rafters would have two 5 spans across the 10 width.
If you had a 12 12 shed with a gable roof that would mean 26 rafters which is a lot.
4 x 8 is tiny.
If the floor joists are 2x6 then the band joists should be 2x6.
Cut your band boards and floor joists and lay out the band boards for 16 inches on center and drill two pilot holes for each 2x4joist or three holes for each 2 6 joist.
3 4 pt plywood floor will not warp and evenly spread the weight as well.
By time you frame walls even if you use 2 x 3 studs you re gonna loose 5 of floor space so you ll be down to a 43 width.
96 17 5 78 5 6 6 head clearance in the shed.
For your floor since you re not using a concrete slab you will probably want 16 centers.
Spacing joists in your shed 16 inches on center will give you a firmer feel with less bounce and increase the load capacity of the floor.
Consider going at least 6 x 8 or 8 x 10 if you can.
Studs mud sills top plates and rafters.
When you place a wall on the band joists you want to transfer the weight to the ground.
If you are building an 8 wide and using 2 x4 x92 5 8 precuts then you can use them here without any cutting.
This type of construction has two main types.
Wooden shed floors are usually built like the picture below and primarily consist of band boards rim joists floor joists and skids.
Billdoe jul 6 17 at 20 38.
You would have to have a monolithic roof for that low slope.
I have a shed built completely with 2x4s.
This is very.
Two by six construction is the main alternative.
So 4 floor 10 roof 3 5 ceiling joists 17 5.
A mr shed is easy for us to move something we often do for our customers.
A large shed might need larger joists.
Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.
Two by four construction is by far the most common and is based on the ubiquitous 2x4.
Most small sheds use all 2x4s for the floor and band joists.
With a 2x4 band joist and 2x6 floor joists it is problematic.
While you may be ok with the joist span at 24 inches the floor will be maxed out to the limits.