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lsu777
LSU Fan
Lake Charles
Member since Jan 2004
22764 posts

re: Adding plywood flooring in attic
quote:

they say this because most people are retarded as frick. It is a disclaimer because idiots will flor the attic, then proceed to stack the attic from floor to roof with shit, that COULD over load it.


this

in the end it all depends on your span. but in general you are going to be fine, just dont be a fricking retard and start stacking totes everywhere thinking its light storage. I.E. Dont stack 5 storages high that each have 25lbs each in them.

keep your heaviest items over the support walls or as close as you can.


oh and do not "notch" your joist. use shims.
This post was edited on 1/3 at 10:46 am


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notbilly
LSU Fan
alter
Member since Sep 2015
1715 posts

quote:

It looks like I have 2x8 on 16 and the span is about 19 feet. Yellow pine.

From what I can tell that’s close to the minimum for 20psf which is what is required for attic space that is usable for light storage

Am I doing that right?


Where did you see that? Using the current building code, 2x8 ceiling joists on 16" centers can span 15'-3" and be used for storage. The older code would allow a span 17'-5".

Use Table R802.5.1(2) Ceiling Joists spans (uninhabitable attic with limited storage, live load = 20psf).

#2 Southern Pine @ 16"o.c.
2x6 = 12'
2x8 = 15'-3"
2x10 = 18'-1"


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GEAUXT
USA Fan
Member since Nov 2007
28081 posts

Just finished doing this on Sunday. The 1/2 inch 2 x 4 plywood works perfectly and it much easier to get up there. I cleared out the HD in Covington lol


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Lutcher Lad
LSU Fan
South of the Mason-Dixon Line
Member since Sep 2009
3661 posts

I installed 7/16" OSB in 2ft X 8ft sections from my drop- down stairs all the way across my attic to allow better access to the A/C evaporator, etc. For 35 years had no problem with it.


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