Article 188.8.131.52 of NFPA 130 requires separate tracks in enclosed trainways to be divided by a 2-hour-rated fire separation. This 2 hours FRR is based on which UL test? Thank you.
You pick it
Which ever UL design, meets your need for 2 hour fire seperation
Thank you very much for your reply. Greatly appreciated. Regards.
Retrieving data ...