How would you layout the floor joists on a 12' run for a shed?
Question:Shed will be 10'x12'. I was going to do nine floor joists spaced 16" oc which is exactly 12', nice and neat. Then I read the first and last joists should be 12" oc from the rim joists. But if I did that I'd have 120" remaining which is 7.5 boards on 16" oc so it doesn't work out.
I could do the 12" thing first and last and then do eight joists on 15" oc for the remainder. But if I do that must I also make the wall studs and rafters 15" oc?
What do you recommend?
Answers:
They only need to be spaced so that a sheet of sheathing can split the last joist it's placed on...
so you will need to start your measurement from the edge of the rim joist (not the center)...
other than that.. there's no code I know of for 12" to rim joist.
form a frame 10'x12' out of the same depth of timber your using as the floor joist and then space the joists as you say at 16" centres, the sides and ends of the shed will be supported by this outer frame plus you will not see any ends of the joists
it only means buying two more pieces of timber but will look neater once the shed is fully erected
hope this helps
thanks
Mick
http://www.192directory.co.uk/
stay on a 16" layout. I have never heard of a required joist 12" from the rim unless it is a local building code. Stay on layout so your subfloor sheeting will break over a joist.
Unless you're planning on having very heavy machinery (like a riding mower or two) in your shed I wouldn't bother with 12" spacing, it's overkill. Whatever you do don't use 15" spacing. Subfloor material like plywood is designed to lay over 12" or 16" spaced joists. If you do 15" it will hang over in spots and I bet it will break off in less than a month. I'd listen to the first guy.
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