• Welcome to The Building Code Forum

    Your premier resource for building code knowledge.

    This forum remains free to the public thanks to the generous support of our Sawhorse Members and Corporate Sponsors. Their contributions help keep this community thriving and accessible.

    Want enhanced access to expert discussions and exclusive features? Learn more about the benefits here.

    Ready to upgrade? Log in and upgrade now.

class 3b

  1. J

    Class 3B combustible liquid in plastic pipe/tubing in plenum

    Lots to unpack in the title. For reference, class 3B liquids (NFPA 30) are fairly high flashpoint liquids > 200 degrees F but range from diesel fuel to cooking oil. I have a good grasp on the plastic in plenum discussion, but am wondering about the introduction of a "combustible" liquid into...
Back
Top