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Roof Collapse from Snow - Estimating Flat Roof Snow Loads using ASCE 7-22
On Tuesday, March 14, the roof collapsed on the Miller Hill Mall in Duluth, Minnesota, under snow loading. How much snow did that roof carry at collapse, and what are the current design standards for computing the flat roof snow load?
This video shows an example of how to compute the flat roof snow load prescribed by ASCE/SEI 7-22. Exposure and thermal factors are discussed, as is use of the ASCE 7 Hazard Tool for estimating ground snow loads throughout the United States. This design value is compared to an estimate of how much snow was carried by the Miller Hill at the time of collapse.
ASCE 7 Hazard Tool: https://asce7hazardtool.online
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