Page 231 - ZF-Catalog-ZSi-Foster-08-19-R3

Cush-A-Block® Rooftop Supports Standard Finish: Pre-galvanized (PG) or Hot Dipped Galvanized (HG)
CBN-RB Series
Support With Raised Bridge Medium Support
Strut Width
Total Width
The CBN-RB Medium Rooftop Supports can support natural gas and refrigeration piping systems, cable tray, electrical conduit, multiple lines, HVAC equipment and many other applications. They are designed for rooftop applications requiring a heavier load bearing capacity, and are suitable for most types of roofing material or other flat surfaces. Custom lengths are available upon request.
Standard strut mount pipe clamps are used to secure the pipes.
CBN-RB Series
Support With Raised Channel Heavy Support
Strut Width
Total Width
The CBN-RB Heavy Rooftop Supports is designed for rooftop applications requiring a heavier load bearing capacity. It is suitable for most types of roofing material or other flat surfaces. Custom lengths are available upon request.
Standard strut mount pipe clamps are used to secure the pipes.
ZSi-Foster Engineering Catalog
WARNING: These products can expose you to chemicals including lead, which is known to the State of California to cause cancer, and which is known to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
10"
254mm
10-1⁄2"
267mm
Raised Bridge Medium Support with 2 CBN Bases
& 1-5⁄8" (41mm) Pre-Galv or Hot Dip Galv. Steel Channel
Part No.
Total Width
Strut Width
Base Length
Uniform Load Capacity (Lbs) *
CBN1RB
18.65" (474mm)
12" (305mm)
10-1⁄2" (267mm)
3,000 * (13.34 kN)
CBN2RB
30.65" (779mm)
24" (610mm)
1,500 * (6.67 kN)
* This load is only for the capacity of the components in this assembly. Please consult roofing manufacturer or engineer for roof load capacity.
10-1⁄2"
16"
407mm
Raised Bridge Heavy Support with 2 CBN Bases &
3-1⁄4" (83mm) Back-to-Back Pre-Galv or Hot Dip Galv. Steel Channel
Part No.
Total Width
Strut Width
Uniform Load Capacity (Lbs) *
CBN3RB
30.65" (779mm)
24" (610mm)
3,500 * (15.56 kN)
CBN4RB
42.65" (1.1m)
36" (914mm)
3,250 * (14.45 kN)
* This load is only for the capacity of the components in this assembly. Please consult roofing manufacturer or engineer for roof load capacity.
267mm
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