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Product Performance

Load Bearing Expand to view deflection table
 Component Load Test Data and Material
Main Tee Length Allowable Load per ASTM C635
Hanger Spacing
4' 6'
Furring Tees Length
Cross Tee Length
Furring Channel Length
1274.01Z 48" 17.0
634.00C 48" 8.2
640.00C 144" HD
644.00C 48" 14.3
650.00C 144" HD
654.00C 48" 14.3
664.00C 48" 14.3
674.00C 48" 14.3
677.00C 72" 5.24

To convert data into lb/ft2, divide on center spacing of component into lb/ft.
Note: 677 has an allowable load of 7.61 based on L/240 span deflection.

 Membrane Loading
Component Combination MR/CT
Hanger Wire / Cross tee Spacing
48"/24" 32"/16"
640.00C / 644.00C 6.9 10.4
640.00C / 644.00C / 1274.01H 5.5 6.2
640.00C / 664.00C 6.9 10.4
640.00C / 664.00C / 1274.01H 5.5 6.2
640.00C / 677.00C 2.62 3.93
650.00C / 654.00C 6.6 7.7
650.00C / 654.00C / 1274.01Z 5.5 6.2
650.00C / 674.00C 6.6 7.7
650.00C / 674.00C / 1274.01Z 5.5 6.2
650.00C/677.00C 2.62 3.93

Membrane loading is not applicable when these components are used in a fire rated assembly. Consult UL Fire Resistance ​Directory for installation details.

Fire Rated Assemblies Hanger Positions for Fire Rated Situations
This illustrates hanger positions for single fixtures in a field and are covered in the table. Refer to specific design numbers for allowable number of fixtures per square footage of ceiling area.
Non-Fire Rated Assemblies Hanger Positions for Non-Fire Rated Situations
This illustrates hanger positions for single fixtures in a field. Provide extra hangers for tandem fixtures.
Environment Materials and Resources (MR)
-Waste Management Planning
-Interiors Life Cycle Impact Reduction
-Environmental Product Declarations
-Sourcing of Raw Materials
-Material Ingredients
-Waste Management
Indoor Environmental Quality (EQ)
-Low-Emitting Materials
-Interior Lighting
-Acoustic Performance
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 Component Load Test Data and Material
Main Tee Length Allowable Load per ASTM C635
Hanger Spacing
4' 6'
Furring Tees Length
Cross Tee Length
Furring Channel Length
1274.01Z 48" 17.0
634.00C 48" 8.2
640.00C 144" HD
644.00C 48" 14.3
650.00C 144" HD
654.00C 48" 14.3
664.00C 48" 14.3
674.00C 48" 14.3
677.00C 72" 5.24

To convert data into lb/ft2, divide on center spacing of component into lb/ft.
Note: 677 has an allowable load of 7.61 based on L/240 span deflection.

 Membrane Loading
Component Combination MR/CT
Hanger Wire / Cross tee Spacing
48"/24" 32"/16"
640.00C / 644.00C 6.9 10.4
640.00C / 644.00C / 1274.01H 5.5 6.2
640.00C / 664.00C 6.9 10.4
640.00C / 664.00C / 1274.01H 5.5 6.2
640.00C / 677.00C 2.62 3.93
650.00C / 654.00C 6.6 7.7
650.00C / 654.00C / 1274.01Z 5.5 6.2
650.00C / 674.00C 6.6 7.7
650.00C / 674.00C / 1274.01Z 5.5 6.2
650.00C/677.00C 2.62 3.93

Membrane loading is not applicable when these components are used in a fire rated assembly. Consult UL Fire Resistance ​Directory for installation details.

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Accessories

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Resources

 

 

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Rockfon Seismic Relief Brochure

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Rockfon Drywall Screw and Panel Placement: Tech Note

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Rockfon Seismic Perimeter Details: Tech Note

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Rockfon Chicago Metallic 6ft Drywall Tee Installation Tech Note
Rockfon Chicago Metallic 6ft Drywall Tee Installation Tech Note

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Chicago Metallic 640 (Hook) 660 (Stab) Non Fire Rated Drywall Grid System Specification
Chicago Metallic 640 (Hook) 660 (Stab) Non Fire Rated Drywall Grid System Specification

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Chicago Metallic 640 (Hook) 660 (Stab) Non Fire Rated Drywall Grid System CDN Specification
Chicago Metallic 640 (Hook) 660 (Stab) Non Fire Rated Drywall Grid System CDN Specification

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Chicago Metallic 650 (Hook) 670 (Stab) Fire Rated Drywall Grid System Specification
Chicago Metallic 650 (Hook) 670 (Stab) Fire Rated Drywall Grid System Specification

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Chicago Metallic 650 (Hook) 670 (Stab) Fire Rated Drywall Grid System CDN Specification
Chicago Metallic 650 (Hook) 670 (Stab) Fire Rated Drywall Grid System CDN Specification

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Rockfon 40 Year Suspension System Warranty
Rockfon 40 Year Suspension System Warranty

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Sample Order Form: Chicago Metallic Drywall Grid
Sample Order Form: Chicago Metallic Drywall Grid

Click 'PDF' to download and customize your grid system sample kit.

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