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Roof design load could help reduce risk of collapse in Aspen, Colo.
Older roofs may only be able to carry 45 to 60 pounds per square foot
The design load of roofs in Aspen, Colo., may provide information about the likelihood of a structure to cave in from snow and alert residents to consult an engineer. Roofs installed after March 1965 were designed with a load of 75 pounds per square foot, as compared to those built before that year, which may be built to carry only 45 to 60 pounds per square foot.