to reply with more specificity, Wille, I had to go to my design tables
:
For A Roof...
Total Dead Loads = 3.0 + 1.05 + 1.05 + 1.1 = 6.2 psf
Live Load = 20 psf; may be less depending on roof slope.
Supports A Ceiling...
Total Dead Loads = 6.2 + 2.8 + 1.0 = 10.0 psf
Live Load = 20 psf; may be less depending on roof slope.
now this particular example I had worked on years ago was to design the framing for a cedar shingled roof ..
sooo ..
anyways, we had about 30 #/sq ft
even if you had a flat roof at 55 #/sq ft, I wouldn't worry
perhaps you should google "roofing snow loads for ny"
:
For A Roof...
- shingles = 3.0 psf
- 1 x 4 nailers at 8" o.c. = (1/2)(2 x 4 at 12" o.c.)(1.5) = 1.05 psf
- 3 1/2" of batt insulation = (3.5)(0.30) = 1.05 psf
- 2 x 4 rafters at 16" o.c. = 1.1 psf
Total Dead Loads = 3.0 + 1.05 + 1.05 + 1.1 = 6.2 psf
Live Load = 20 psf; may be less depending on roof slope.
Supports A Ceiling...
- All of the above = 6.2 psf
- 5/8" gypsum board = 2.8 psf
- Lights/Misc. = 1.0 psf
Total Dead Loads = 6.2 + 2.8 + 1.0 = 10.0 psf
Live Load = 20 psf; may be less depending on roof slope.
now this particular example I had worked on years ago was to design the framing for a cedar shingled roof ..
sooo ..
anyways, we had about 30 #/sq ft
even if you had a flat roof at 55 #/sq ft, I wouldn't worry
perhaps you should google "roofing snow loads for ny"
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