We are working on an ESFR system installed in a pre-engineered metal building.
Can the main frame rafters be considered walls when it comes to spacing of sprinklers?
Can sprinklers be spaced 2-5 feet on either side of the rafters of a pre-enginered building?
The depth of rafter is 30-inches, sprinkler deflector is installed at 14-inches. I believe I can use the rafters as walls or baffles, but had a contractor comment the opposite. We're using the 2013 edition of NFPA 13 for reference.
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