Snow and Live Loading Combinations of an Occupied Roof Deck
Snow and Live Loading Combinations of an Occupied Roof Deck
(OP)
I am looking for some type of documentation to help support (or argue against) this statement:
"IBC 2015 load combinations including .5L + 1.6S, and 1.6L + .5S, were not considered in the design of the roof deck. Because the assembly area is outdoors, an extreme snow load (1.6S) will result in the area being uninhabitable. Additionally, a moderate snow load (.5S) will prevent a dense crowd of people (1.6L) from congregating outside. For this reason, combinations including roof live loads predominately govern."
"IBC 2015 load combinations including .5L + 1.6S, and 1.6L + .5S, were not considered in the design of the roof deck. Because the assembly area is outdoors, an extreme snow load (1.6S) will result in the area being uninhabitable. Additionally, a moderate snow load (.5S) will prevent a dense crowd of people (1.6L) from congregating outside. For this reason, combinations including roof live loads predominately govern."
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RE: Snow and Live Loading Combinations of an Occupied Roof Deck
The second condition says that more people will be on the deck with less snow - Uniform snow condition unshoveled.
That's my take, but as for reality? Who knows? Use the EWAG principle...
Personally, I think it's a snow job.
Mike McCann, PE, SE (WA)
RE: Snow and Live Loading Combinations of an Occupied Roof Deck
RE: Snow and Live Loading Combinations of an Occupied Roof Deck
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