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EXTERIOR SYSTEMS - FIRE PERFORMANCE

EXTERIOR SYSTEMS - FIRE RESISTANCE

The following is a small sampling of fire resistive designs that are available.  There are 2 sources of information that can provide comprehensive information on fire resistant assemblies.  The first is GA 600 Fire Resistance Design Manual published by the Gypsum Association.  The second is entitled A Guide to Fire & Acoustical Data for Steel Floor, Wall, and Roof Assemblies published by the Steel Framing Alliance.

EXTERIOR WALL - 1 HOUR FIRE RATING

CLADDING:

  • Exterior:  1/2” proprietary cementitious backer units with weather resistant barrier behind the panel.
  • Interior:  5/8” proprietary gypsum wallboard meeting requirements of ASTM C1369 Standard Specification for Gypsum Wallboard.

FRAMING:  Structural stud meeting ASTM C955 Standard Specification for Load-Bearing (Transverse and Axial) Steel Studs, Runners (Tracks), and Bracing or Bridging for Screw Application of Gypsum Panel Products and Metal Plaster Bases.
Minimum size 362S137-33 at 16 inches o.c.

MINIMUM WALL THICKNESS:  4-3/4"

INSULATION:  Required 3” mineral wool

TEST REFERENCE:  UL Des U 404


CLADDING:

  • Exterior:  5/8” proprietary glass mat gypsum sheathing meeting ASTM C1177 Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing.
  • Interior:  5/8” proprietary gypsum wallboard, Type X, meeting requirements of ASTM C1369 Standard Specification for Gypsum Wallboard.

FRAMING: Structural stud meeting ASTM C955 Standard Specification for Load-Bearing (Transverse and Axial) Steel Studs, Runners (Tracks), and Bracing or Bridging for Screw Application of Gypsum Panel Products and Metal Plaster Bases.
Minimum size 350S137-33 at 24 inches o.c. with required lateral bracing.

MINIMUM WALL THICKNESS:  4-3/4"

INSULATION: Optional mineral wool or glass fiber batts

TEST REFERENCE:  UL Des U 425 Fire exposure from interior side


CLADDING:

  • Exterior:  Polymer modified Exterior Insulation & Finish System over 4” maximum foam plastic insulation applied to 5/8” gypsum sheathing Type X meeting ASTM C1369 Standard Specification for Gypsum Wallboard.
  • Interior:  5/8” gypsum wallboard, Type X, meeting requirements of ASTM C1369 Standard Specification for Gypsum Wallboard.

FRAMING: Structural stud meeting ASTM C955 Standard Specification for Load-Bearing (Transverse and Axial) Steel Studs, Runners (Tracks), and Bracing or Bridging for Screw Application of Gypsum Panel Products and Metal Plaster Bases.
Minimum size 362S137-43 at 16 inches o.c. with required lateral bracing.

MINIMUM WALL THICKNESS 5-3/4" - 9"  varies

INSULATION: Optional mineral wool or glass fiber batts

TEST REFERENCE: GA WP 8123

 


 

EXTERIOR WALL - 2 HOUR FIRE RATING

CLADDING:

  • Exterior: Polymer modified Exterior Insulation & Finish System over 4” maximum foam plastic insulation applied to 2 Layers 5/8” gypsum sheathing, Type X, meeting requirements of  ASTM C1369 Standard Specification for Gypsum Wallboard.
  • Interior:  2 Layers 5/8” Gypsum wallboard, Type X, meeting requirements of   ASTM C1369 Standard Specification for Gypsum Wallboard.

FRAMING:  Structural stud meeting ASTM C955 Standard Specification for Load-Bearing (Transverse and Axial) Steel Studs, Runners (Tracks), and Bracing or Bridging for Screw Application of Gypsum Panel Products and Metal Plaster Bases.
Minimum size 362S137-43 at 16 inches o.c. with required lateral bracing.

MINIMUM WALL THICKNESS:  7" - 10-1/4"  varies

INSULATION:  Optional mineral wool or glass fiber batts

TEST REFERENCE:  GA WP 8202

 


CLADDING:

  • Exterior: 1” nominal Portland cement stucco and self-furring metal lath over 1/2” gypsum sheathing, Type X, meeting requirements of ASTM C1369 Standard Specification for Gypsum Wallboard.
  • Interior:  5/8” proprietary Gypsum wallboard, meeting requirements of   ASTM C1369 Standard Specification for Gypsum Wallboard.

FRAMING:  Structural stud meeting ASTM C955 Standard Specification for Load-Bearing (Transverse and Axial) Steel Studs, Runners (Tracks), and Bracing or Bridging for Screw Application of Gypsum Panel Products and Metal Plaster Bases.
Minimum size 362S137-33 at 16 inches o.c. with required lateral bracing.

MINIMUM WALL THICKNESS:  5-3/4"

INSULATION: 3” mineral fiber insulation

TEST REFERENCE:  GA WP 8250


While reasonable effort has been made to ensure the accuracy of this information, we assume no liability for any errors or omissions on these pages.  Please verify all information with the organizations mentioned above.   It is the right and responsibility for the architect of record to make final material/system selection.