• 2018 International Building Code Section 721
  • www.huduser.gov – U.S. Department of Housing and Urban Development Fire Ratings
  • www.fire.nist.gov – “Building Materials and Structures, Report BMS92” Engineering and Safety Service
  • American Insurance Services Group, “Fire Resistance Ratings”
  • 2015 International Existing Building Code, Resource A: Guidelines On Fire Ratings of Archaic Materials and Assemblies