Rockfon Chicago Metallic SpanFast 640SF.072 User manual
Chicago Metallic SpanFast® Center Support System
1-3/8" Drywall Suspension Furring Runner System
1
Center Support Attachment Detail
Option A
Center Support Attachment Detail
Option B
1" Sharp Point
Screw
1" Sharp
Point Screw
5”
Two Pan Head Screws
to Upside Down Tee
Upside
Down Tee
Tee Bar lays flat
on top of Bulb
Two Pan Head
Screws into Bulb
Splice Detail
Upside
Down Tee
Splice
Cut and Screw
Bulb
48" OC
16" or 24" OC
Note: Sufficient plenum
height is necessary
Installation Guide
Chicago Metallic SpanFast® Center Support System
1-3/8" Drywall Suspension Furring Runner System
2
No support Mid-span support Two supports at 1/3 points
L L L
L/2 L/2 L/3 L/3 L/3
Allowable Load (lb/ft2) With No Lateral Bracing at L/240 (per ASTM C 645)
Span
Two
No Mid-span Supports at
Support Support 1/3 Points
Number Length Spacing 4’5’6’7’7’8’10’12’14’14’
640SF.072 6’16”6.05
640SF.072 6’24”4.03
640SF.096 8’16”18.80 18.80
640SF.096 8’24”12.50 12.50
640SF.120 10’16”10.23 10.23
640SF.120 10’24”6.80 6.80
640SF.120 12’16”6.05 6.05
640SF.120 12’24”4.03 4.03
640SF.168 14’16”3.86 3.86
640SF.168 14’16”28.57 12.23
640SF.168 14’24”19.00 8.14
1. Component Load Test Data
ROCKFON, LLC | 4849 S. Austin Ave., Chicago, IL 60638 USA
Tel. +1-800-323-7164 | Fax. +1-800-222-3744 | www.rockfon.com | cs@rockfon.com | 10-2015
Installation Guide
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Table of contents
