Joist blocking, what grade wood?

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Old 08-03-18, 08:12 PM
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Joist blocking, what grade wood?

I have 2x12x16 doug fur joist under my floor, I need a little more support spanning that distance. I wanna put 2x12 supports between my joist, should I use 2x12 doug fur or just a stander pine 2x12 for support blocks?
 
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Old 08-03-18, 08:45 PM
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If the area where the floor joists are located is climate controlled, you can use standard pine. If not, due to contraction and expansion, you probably should use Douglas Fur.
 
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Old 08-04-18, 04:45 AM
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Thank you I'll go with the douglas fur...
 
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Old 08-04-18, 05:06 AM
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The species of wood does not matter. Use standard spf. You should be aware that blocking between joists does not significantly stiffen a floor. It must be very tight to do anything at all. The best way to stiffen a floor is to cut the span in half with a beam. And if that isn't possible, sister the joists.
 
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