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penetration

  1. Blazer

    Tested through-penetration firestop system also a foam plastic insulation?

    My concern is for the penetration firestop foam known as 3M Fire Barrier Rated Foam FIP 1-Step. The product was tested per ASTM E 814/UL 1479 to afford itself 13 UL listings. This product then must be installed as tested according to 714.4.1.2 and 715.5.1.2. This product is a two part liquid...
  2. S

    Fire Partition penetration

    Fire partition extends to underside of roof sheathing. Partition is penetrated by 2x12's holding up the roof deck. There is no requirement for rated roof assembly. Fire caulk around each 2x12? What is the code reference to address the condition?
  3. W

    What is a relieving arch

    Hello everyone, I was perusing the 2012 IPC this morning and came to section 305.3 "Pipes through foundation walls" when I found the term "relieving arch" mentioned. For the past hour I've been searching google for a technical definition of a relieving arch and I haven't found anything that...
  4. A

    Run items (ducts, conduits, pipes, etc.) in rated stair wall

    I know that per 1023.5 of the code, there are no penetrations allowed in an interior exit stairway except for the items listed that serve the stair. Per the exception though, membrane penetrations are allowed on the outside of the enclosure. Are you then allowed to run items inside the wall that...
    • Adrienne
    • Thread
    • cbc conduit fire barrier horizontal penetration hvac interior exit stair penetration rated wall
    • Replies: 1
    • Forum: California
  5. A

    Run items (ducts, conduits, pipes, etc.) in rated stair wall

    I know that per 1023.5 of the code, there are no penetrations allowed in an interior exit stairway except for the items listed that serve the stair. Per the exception though, membrane penetrations are allowed on the outside of the enclosure. Are you then allowed to run items inside the wall that...
    • Adrienne
    • Thread
    • cbc conduit fire barrier horizontal penetration hvac interior exit stair penetration rated wall
    • Replies: 15
    • Forum: Commercial Building Codes
  6. V

    Stair Support in Exit Enclosure

    I have read the earlier discussion on the topic of structural penetrations of a rated exit enclosure, but I remain unclear as to what is permissible. We are working on a 5 story, Type II-B building. Vermont has replaced IBC chapter 1000 with NFPA 101 for matters of m.o.e. We have a 2-hr wall...
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