I am considering splicing (2) 2x12's together in order to get a longer rafter, but also get the bending strength of a double rafter. 24' is the typical stocked length in our area and I have a roof that has a 25' span. The dead and snow loads require 2x12 DF2 @ 12" o.c. I would like to splice (2) 24' pieces together with 1' offset at each end and set them 24" o.c. I believe with the right nailing (about (4) 10d @ 12" o.c.) and some glue for safety, this should function well as a double 2x12. The max shear load is plenty for a single 2x12 and this allows me to use single 2x12 hangers at the ridge. Does anyone have any major objections or am i missing something? We save a lot of money and lead time for specialty lumber.
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