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shaft enclosures

  1. F

    UL Rated Assembly vs Non-Combustible or Limited Combustible

    Hello All. first post here and im hoping you can help shed some light on this issue. We have a kitchen grease duct exhaust that we're in a bit of a pickle with. IBC called out for it to be in a 2hr shaft enclosure and so we provided a UL U301 assembly with 2 layers of gyp either side and wood...
  2. M

    stair shaft enclosure conflicting sections in chapter 10 2015 IEBC

    Can anyone comment on the seemingly conflicting provision of Section 1012.4.1 and Section 1012.7.2 with regard to stair shaft requirements in an occupancy conversion? Section 1012.4.1 has specific direction stating "Stairways shall be enclosed in compliance with the applicable provisions of...
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