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Fire-Resistance Ratings

Composite Concrete Assemblies

Assembly Name

Assembly Type

Required Mortar Cover Thickness Each Side (in) 1-Hour 2-Hour 3-Hour Rating Rating Rating1

PSM Wall with1.25" 2" Fire Endurance Code Compliance in Accordance IBC Section 7212.75"

• Tables below show 1-hour, 2-hour and 3-hour rated assemblies. • Fire ratings were achieved by varying the mortar thickness. Required Mortar Cover Thickness Each Side (in) 1-Hour 2-Hour 3-Hour Rating Rating Rating1

Assembly Name

Assembly Type

PSM

Wall

1.25"

2"

2.75"

PHP

Wall

1.5"

2"

2.75"

Assembly Name

Assembly Type

PSM PSG

Required Mortar Cover Thickness (in) 1-Hour Rating

2-Hour Rating

3-Hour Rating

Top

Bottom

Top

Bottom

Top

Bottom

Roof

2"

1"

3"

1"

4"

1.25"

Floor/Roof

2"

1"

3"

1"

4"

1.25"

Table 2: Mortar Thickness Required for GCT Roof/Floor Assemblies to Achieve the Listed Fire-Resistance Ratings

Table 1: Mortar Thickness Required for GCT Wall Assemblies to Achieve the Listed Fire-Resistance Ratings 1

Wall 1.5" 2" 2.75" • For wallPHP assemblies, mortar thickness is symmetrical. • For floor/roof assemblies, mortar has specific top and bottom thicknesses.

A second layer or wire mesh is required with a minimum ½" cover.

Required Mortar Cover Thickness (in) Assembly Assembly 1-Hour Rating 2-Hour Rating 3-Hour Rating GCT Contact Information Name Type Bottom VP: Top Bottom Top Bottom Victor Camacho, PE - Sales &Top Operations 787-643-2684 or vcamacho@carmelo.com PSM

Roof

2"

1"

3"

1"

4"

1.25"

VistPSGus on the web at2"gulfconcretechnology.com Floor/Roof 1" 3" 1" 4" 1.25"

www.sbcri.info

120119 gct fire resistance ratings proof  
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