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  • Users: H Bui
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  1. H Bui

    Wind and seismic load evaluations for existing roof rafters for commercial building

    Thank you MSL and SB for your answers. I think utilizing 11B.2.2 as an exception to avoid conducting seismic analysis on the existing roof is a sound approach to present to the local B.D.. Additionally, I concur that calculating the dead load of the MAU to existing roof rafters to ensure their...
  2. H Bui

    Wind and seismic load evaluations for existing roof rafters for commercial building

    Good day, I am working on a project that requires to have a new Makeup Air Unit (MAU)installed on the roof top of an existing commercial building. The local Building Department requests to show the existing roof structure can support the weight of the new MAU (under 500 lbs.) as well as...
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