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Unread 01-27-2019, 10:26 AM   #73
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Join Date: Sep 2018
Posts: 192
Dan: I mean which material is worth the trouble, douglas fir or yellow pine vs spruce. I'm not counting out sawn lumber.

AND I'm remembering why I thought my floor is solid enough as it is:
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The joists are 14" o.c., not 16" For a span of 11.5" and 14" SYP or Douglas fir in good condition, the deflect-o-lator gives a deflection of L/385. I'm actually a bit better than 14" because some of the joists are a bit closer and doubled up. I'd say I'm smarter than I thought but I did just rip out a plaster and metal lath ceiling for what turns out to be no good reason... Still going to strengthen everything.
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