A roof snow drift loading condition adjacent to a wall transitions from a flat roof snow load of 22 pounds per square foot into a triangular drift surcharge peaking at 118 pounds per square foot against the face of the wall. The drift extends horizontally for a distance of 22 feet across the roof level.
ROOF LEVEL FACE OF WALL 118 PSF FLAT ROOF SNOW LOAD = 22 PSF SNOW DRIFT DIAGRAM #1 22'-0"
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