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Snow Load Factors - ASCE vs ACI

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Title: Snow drift loads on adjacent sloped roofs
I was given the following as loads on a double tee supported deck in Pennsylvania.
DL = 5 psf
LL = 50 psf
SL = 30 psf
and a note saying "all loads are cumulative"
ACI-318, Chpt 9 has no mention whatsoever of the ultimate strength factor for snow loads. It has 1.4 D + 1.7 L
ASCE 7-98, Chpt 2 has 1.2 D + 1.6 L + 0.5 S
and 1.2 D + 1.6 S + 0.5 L
For Pennsylvania, what load combinations should I use...???
(My BOCA is in the storage)