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Double 2 x 12 span

Ridiculous - When designing this with a 3/8 or 1/4" steel plat (Flitch Beam) You can not extend either beyond its limits

steel bending 22000 psi wood bending 1200 to 1400 psi so wood is 5-6% of steel in bending

the wood hols the steel vertical but I NEVER considered the combination as contributing to the capacity.

so OSB that is not linked or continuous or rated in bending??? adds dead load and detracts from the 2x12's capacity..............
 
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