Sub floor: 3/4" thick by 3" wide plywood strips at 3'OC

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  #1  
Old 05-27-13, 11:46 AM
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Sub floor: 3/4" thick by 3" wide plywood strips at 3'OC

Hello,

I have an extremely tight budget and am looking for a very nominal subfloor to install 1-1/4" thick soft wood planks (12" wide x 10' long). Would it be ok to use 3/4" plywood cut 3" wide and spaced at 30" OC - considering the finished floor is 1-1/4" thick?. The substrate is concrete and the finished floor has tongue and groove joints.

PS: I am in Ukraine at the moment. Bought a small apartment that I have gutted and will be building with my hands for the first time!

Thanks in advance for your assistance.
 
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Old 05-27-13, 05:20 PM
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That makes no since to me in so many ways.
No form of wood that's not pressure treated should be in contact with concrete.
Your "joist" spacing would be close to double what's needed.
Why would you use a soft wood for flooring/
Engineered flooring installed as a floating floor with a vaper barrier would be less work, less increaced floor height.
 
  #3  
Old 05-27-13, 10:27 PM
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More clarity:

6mil vapor barrier on concrete.
3/4" Plywood sheet laid flat on its thickness.
Each stop of plywood 3" broad and staggered in length.
Soft wood planks laid perpendicular to plywood strips.

Engineered wood is twice the cost of softwood planks.
The flooring is for an apparent.
I plan to destres the softwood before finishing it.
 
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