Code Requirements
Fire/Smoke Requirements
Torsion, collapse, air leakage and impact are related only to sheet metal duct, and do no apply to FabriDuct™, except for USDA and other similiar applications. UL 181 mentions fire code and torsion/collaspe/impact indices, but only the fire code is revelant in our case. FabriDuct™ is "a combination flexible air duct and air diffuser for exposed ceiling applications to be used as a positive pressure air distribution component".
Considerations
Flame spread/Smoke development must not exceed 25/50 rating. This rating and the ASTM E 84 test method are typical to UBC 8-1 and UL723. These requirements are also consistent with flame/smoke indices set by the Uniform Mechanical Code for the various pipe insulations, duct insulations and other combustibles used in air handling plenums.
Description of requirements
- NFPA 255, "Standard Method of Test of Surface Burning Characteristics of Building Materials" (ref: NFPA 255-C.2.3.2)
- NFPA 90B-1993, "Warm Air Heating and Air Conditioning Systems"
- NFPA 90A-1993, "Installation of Air Conditioning and Ventilation Systems"
This page addresses the related fire code requirements for fabric duct distribution devices. FabriDuct™ Systems are in accordance with the ASTM International fire test response standard E 84, Surface Burning Characteristics of Building Materials, as both a duct and diffuser. The National Fire Protection Association (NFPA) has concluded that the following fire codes have been met:
Flame Spread / Smoke Development