Project Development and Documentation  ARE 5.0 Handbook Sample Item 1
NCARB,
I'm trying to figure out how you arrived at the answer for determining the total snow load on the ridge beam.
The Question asks: "If the design snow load is 60 psf, what is the total snow load per linear foot on the ridge beam?"
The rationale says to multiple half the total span by the design snow load to determine the snow load on the ridge beam.
The equation used and that answer given: 10'0" x 60 psf = 600 lb/lf
I don't understand why 600 lb/lf doesn't represent only half the load on the ridge beam given that the rafter is only sitting on half the beam. Wouldn't the total span x the design snow load represent the total load on the ridge beam making the answer 1200lb/lf?
I feel there is something obvious I'm missing.
Any help would be appreciated.

Official comment
Darryl,
Good question. Half of the load on each rafter is going to the exterior wall. Since each rafter span is 10 feet, 5 feet of each rafter span is going to the exterior wall, the other 5 feet is going to the ridge beam.
Hopefully this helps!
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