Due to some inconsistancies in building I may need to use butt-joints on my 4x8 T&G OSB subflooring. So we all understand my terminology here is a pic showing the two different layout possibilities.
(https://i13.photobucket.com/albums/a291/n74tg/Subfloorpattern.jpg)
Floor-joists run vertically, ie the 8' dimension is perpendicular to floor joists.
While I may be able to use the overlap method (my desire), what will be the disadvantages I face if I have to use the butt-joint layout?
thanks...Tony
More flexing at the floor joist that has no overlap (staggered joint)
Tony I think the "overlap" would yeild the strongest floor. Generally that is the way I have always done mine and others I have observed.
Definitely stagger ( or as you call / show it ) overlap you joints , always the best way , even when you hang your sheetrock your "butt joints" should be staggered , or again overlapped.
"Overlapped" is the wrong term as it indicated they are laying on one another , like bevel siding is "overlapped" what your doing or showing is staggering of the joints.
That stagger / overlap would also be used for wall and or roof sheathing , unless the sheets can be soldiered , applied with the 8' or 9' , yes 9' OSB is available, not CDX ,but OSB .
The reason to solder the sheets is a wording in the code book that "all edges must be nailed" so IF your wall are 9' or less it says time and blocking materials to soldier the sheets . IF code is to be met.
G/L PEG
Sorry if that TMI , but after the floor your on to walls so you'll be asking then anyway so this is " heads up" info.
TMI = To Much Infomation BTW. d*
Staggering is always best. But if you absolutely can't stagger, you can improve the situation by adding/sistering a 2x4 securely to both sides of the joist that lies on the seam-joint. This will add greatly to the landing area for the edges of the flooring sheets. Then use lots of glue and screws/nails.
Jack Daniel's enhances staggering.
Quote from: glenn kangiser on May 10, 2008, 12:42:41 PM
Jack Daniel's enhances staggering.
GROAN !!!!!!!!!!!!! ;)
Sorry 'bout that, PEG. d*
Quote from: glenn kangiser on May 10, 2008, 12:42:41 PM
Jack Daniel's enhances staggering.
I do NOT have a drinking problem!
I drink. I get drunk. I fall down.
No Problem.
from a very old T-shirt
Is there any serious down side to just using 2 x 6 T&G for the floor decking?
Quote from: considerations on May 10, 2008, 10:35:05 PM
Is there any serious down side to just using 2 x 6 T&G for the floor decking?
No other than expense/ money.
2x6 T&G was a popular floor system in the 60 and 70's lumber was cheaper , you'd use beams generally 4x6's spaced 3' or 4' apart so the span between beams was greater than today "normal" 16" , 19.2 , or 24" spacing , the 2x6T&G could span that added span ease.
It does squeak like heck when walked on , but the basic answer to your question is no there no serious down side , just different reason for using it. A entirely different floor system in many ways. Than Plywood / OSB T&G sheet goods.
You still could use the 2x6's there'd be some hiccups / odd thing / with fitting it into the prescriptive code IRC 2006 , but nothing that couldn't be dealt with
I know that I am new to this forum, but please stagger you joints!
w* ced257
Thank you, Thank you! I am a carpenter in northwest Arkansas, fixing to start building my own cabin.
We'll be looking forward to seeing your project progress.