Whoops, I meant 2 x 4 chords. After looking at the existing loading on the structure, here are the loads i've generated that are being supported by the joists:
ACTUAL ROOF DEAD LOADS (DL):
(Estimated from visual site review)
Built-up roofing 2.5 psf
Insulation 1.5 psf
1/2"...
Sorry, I meant 2 x 4 flat chords. I understand that the trusses are to be designed per the loads given to them by the original engineer, I just dont know what the initial data was that was given to the original joist designer to design for.
During my site investigation, it looks like the joists...
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