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Technical Data Gamma Pads Rooftop Supports Concrete Inserts Beta Clamps & Z-Clamps Loop & Ring Clamps Spring Steel Electrical Fittings Pipe & Conduit Supports General Fittings Channel Nuts & Hardware Channel IntroductionZSi-Foster Engineering Catalog – 233 –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.CBN-RB SeriesSupport With Raised Bridge Medium SupportCBN-RB SeriesSupport With Raised Channel Heavy SupportCush-A-Block® Rooftop SupportsStandard Finish: Pre-galvanized (PG) or Hot Dipped Galvanized (HG)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.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.StrutWidthTotalWidth10-1⁄2\267mm10\254mmWWW.ZSI-FOSTER.COMWWW.ZSI-FOSTER.COMStrutWidthTotalWidth10-1⁄2\267mm16\407mmWWW.ZSI-FOSTER.COMWWW.ZSI-FOSTER.COMRaised Bridge Heavy Support with 2 CBN Bases & 3-1⁄4\Part No. TotalWidthStrutWidthUniform Load Lbs (kN)*CBN3RB 30.65\24\2,500†* (15.56 kN)CBN4RB 42.65\36\2,500†* (14.45 kN)* This load is only for the capacity of the components in this assembly.† Beam load is limited by weld shearPlease consult roofing manufacturer or engineer for roof load capacity.Raised Bridge Medium Support with 2 CBN Bases & 1-5⁄8\PartNo.TotalWidth Strut Width Uniform Load Lbs (kN)*CBN1RB 18.65\12\(305mm)3,000 *(13.34 kN)CBN2RB 30.65\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.