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II Weeks 04-14-2010 07:19 PM

Span For Flooring / Ceiling
I want to use 2X8 T&G Cyprus for an exposed ceiling and a finished floor on the other side. Whats the longest span I can go without any support? I'm hoping for 6' feet.

Thanks in advance

meboatermike 04-14-2010 08:05 PM

Presuming that you are putting these flooring boards together tongue and groove unless I am thinking wrong you normally are going to be running and attaching these boards either perpendicular or diagonally over joists. :eek: there is no way you are going to be allowed to go 6 foot :no: I am thinking the joists will be set at 16" o.c. or maybe 24" o.c. at the most.

I am sure an actual builder or inspector may chime in here at some point with more information......

jklingel 04-14-2010 10:58 PM

A six foot span for flooring? Not going to happen. Are the "whatevers" that you are going to put the T&G over sitting there 6' apart? What are they, and what are they holding up now? I'm confused. j

Gary in WA 04-14-2010 11:33 PM

No, this will get you started: page #195:

Be safe, Gary

II Weeks 04-16-2010 08:05 PM

thnaks for the replies so far. The flooring will sit on exposed 4X4's and like I said, I was hoping to get a six foot span between them. That doesnt look like its going to happen. The 2X8 cyprus is a lot stronger than any type of pine flooring. The T&G glued makes for a pretty solid floor but now Im hoping to be allowed a 2 foot span. Its all good. The exposed lumber is a great look for what I want to do.

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