Labels:reckoner | sky OCR: The point is that if the panels are not pinned adequately to the structure to resist these drag loads, they can in fact be torn from the roof, the use of snow retention devices notwithstanding. Remember our calculations to determine the drag load? Itis function of the roof slope and the design roof snow load. The design snow load does not normally assume that snow IS going T evacuate the roof sur face represents the maximum snow that will accumulate on the roof surface in 50-year mean recurrence It is not. as arule "increased" due to the use of snow guards vear mear ecurrence rule
