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combustible material in type I and II construction 603.1

Discussion in 'Commercial Building Codes' started by Hyrax4978, Jan 11, 2019.

  1. Hyrax4978

    Hyrax4978 Registered User

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    I was reading the list of allowed wood in section 603.1 item 2 and then realized the items listed are an exception to thermal and acoustical insulation. i am confused as to why the list of allowed items is an exception to thermal and acoustical insulation??

    Thanks,
     
    #1 Hyrax4978, Jan 11, 2019
  2. Sifu

    Sifu Gold Member

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    If I understand your confusion I think it is just an optical illusion. There are two exceptions to application #2. The 3rd application is not exception #3, it is application #3. I understand the confusion because of the way application #3 follows exception #2 at the top of the next column (at least in my 20123 soft-cover book). Subsequent editions and different formats have a little different layout and are more clear.
     
    #2 Sifu, Jan 11, 2019
  3. Hyrax4978

    Hyrax4978 Registered User

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    Thats how i remember it from the last time i looked years ago, but when i grabbed the 2012 commentary to double check the second exceptions for item two continue on the next page, and then item 3 is in the same vertical plain as item #2. Must just be a misprint in the commentary not aligning properly.
     
    #3 Hyrax4978, Jan 11, 2019
  4. Sifu

    Sifu Gold Member

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    You are right, the commentary does appear to have poor numbering indents. The way it reads there are only two applications, and the second application has 25 exceptions. But I think the correct enumeration is application #2 has 2 exceptions, and application #3 (of 25) is for foam plastics.
     
    #4 Sifu, Jan 14, 2019
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