Fire Protection For Microlam Floor Joist

If the suspended ceiling system is fire rated as equivalent to the fire performance of 1 2 inch gypsum on the underside of the i joist framing it is considered an alternative to the fire protection requirements in accordance with the first paragraph in the 2015 irc section r302 13 and 2012 irc section r501 3.

Fire protection for microlam floor joist.

Dc5040 is a water based thin film intumescent coating providing fire resistance to i joist and engineered wood framing members. Can prefabricated wood i joists be used without membrane protection. Section r302 13 exception 4 of the 2015 irc allows other approved floor assemblies demonstrating equivalent fire performance q. Recent astm e119 testing using 100 design load conditions as required by that standard conducted independently by underwriters laboratory ul and ngc testing services ngc confirm that an unprotected floor assembly constructed of 2x10s or flak jacket coated i joists do not provide equivalent performance to a floor assembly that has a gypsum wallboard membrane ceiling as.

Csg tjcan12 simpson connector guide for trus joist products. Fire protection of floors constructed with prefabricated wood i joists for compliance with the international residential code 1. Tj 9510 installation guide for floor and roof framing with tji s31 s33 and s47 joists east canada. Applied to the i joist only once the i joist are installed dc5040 provides equivalence to the 2 by 10 dimension lumber prescribed in section r302 13 exception 4 of the 2015 irc and section r501 3 exception 4 of the 2012 irc.

Our most versatile beam solution. Are there established criteria by which equivalent fire performance can be. Sections r502 1 4 prefabricated wood i joists and r501 3 fire protection of floors n astm d5055 09 recognized by the 2012 irc. Demonstrating equivalent fire performance.