I have a set of existing plans from a renovation done in '93. I do not have the original building design drawings. The renovation drawings indicate the main beams are 9 x 35-14 glu-lam beams. Field measurements on the beam confirm the size, but due to inaccessibility of the beam or the beam being painted there are no stamps visible. Has anyone come across a glu-lam beam of this size before? I am also wondering what grade to use, I have tried estimating the grade based on building being in Maryland and the roof load stated on the renovation drawings and what is coming working is a SP-SP 24F-V5. The beam has a span of 52.375' with a stated roof live load of 30psf (which I am putting as a snow load) with a tributary width of 17.708'. the problem I am having is that I do not know if SP-SP glu-lam beams are ones to use for that area or should I be using a different species for this glu-lam beam.
Thanks for your time
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