Our strut support system is designed with many time-saving features. They are fully adjustable andreusable, with a complete line of channels, fittings and accessories for multi-purpose applications.

• No Welding

• No Drilling

• Use Your Imagination

The strut system installs quickly, with no need for special tools. All you need is a wrench and hacksaw.

Channels and parts can be taken apart for reuseas quickly as they were assembled, yet help provide the strength of welded construction. This eliminateswelding and drilling which can have substantialsavings in time and labor.

1. Channel nut may be inserted anywherealong continuous slot. Designed for easyinsertion and self-alignment.

2. A 90° turn aligns channel nut grooveswith inturned lips of the channel.

3. Position fitting over channel nut andinsert bolt to start any connection.

4. With the twist of a wrench, channel nut locks its teeth firmly against inturned lips.

Introduction

Introduction

Strut Systems2

Our strut system provides an economicalsolution for electrical, mechanical and industrialsupports with an unlimited variety of applicationsin the construction industry.

Electrical Applications• Lighting Fixture Supports• Raceway Systems• Trapeze Hangers• Pipe & Conduit Supports• Cable Tray Supports• Beam Adjustments

Mechanical Applications• Piping Racks• Tunnel Pipe Stanchions• Concrete Inserts• Beam Attachments• Pipe Risers

Industrial Applications• Racks and Shelving• Partitions• Production Line Supports• Trolley Systems• Wall Framing

IntroductionTable of Contents

3Strut Systems

MATERIALS

Carbon SteelChannels made from high-quality carbonsteel are continuously roll formed toprecise dimensions. By cold working thesteel mechanical properties are increased,allowing lightweight structures to carry therequired load. Corrosion resistance ofcarbon steel varies widely with coating andalloy. See “Finishes” for more detailedinformation.

Stainless SteelStainless steel channel is available in AISIType 304 or 316 material. Both arenon-magnetic and belong to the austeniticstainless steels group, based on alloycontent and crystallographic structure. Likecarbon steel, stainless steel exhibitsincreased strength when cold worked byroll-forming.

Several conditions make the use ofstainless steel ideal. These includereducing long term maintenance costs,high ambient temperatures, appearance,and stable structural properties such asyield strength, and high creep strength.

Type 304 resists most organic chemicals,dyestuffs and a wide variety of inorganicchemicals at elevated or cryogenictemperatures. Type 316 contains slightlymore nickel and adds molybdenum to giveit better corrosion resistance in chlorideand sulfuric acid environments. For moreinformation concerning the differencesbetween types 304 and 316, visitwww.cooperbline.com/contactus.

AluminumStandard aluminum channel is extrudedfrom aluminum alloy 6063-T6. Strut fittingsare made from aluminum alloy 5052-H32.

The high strength to weight ratio ofchannel made of aluminum helps greatlyreduce the overall cost of installationthrough ease of handling and field cutting.

Aluminum owes its excellent corrosionresistance to its ability to form analuminum oxide film that immediatelyreforms when scratched or cut. In mostoutdoor applications, aluminum hasexcellent resistance to “weathering”.The resistance to chemicals, indoor oroutdoor, can best be determined by testsconducted by the user with exposure tothe specific conditions for which it isintended. The corrosion resistance ofaluminum to some commonly knownchemicals is shown in the CorrosionChart. For further information, contactus or the Aluminum Association.

FiberglassWe offer two fire retardant (FR) resins forstrut systems, polyester and vinyl ester.Both resins are ideal for corrosiveenvironments or nonconductiveapplications with moderate strengthrequirements. Some common types ofenvironments where Vinyl Ester Resins arerecommended, that Poly Esters are not,are paper mills, most any metal platingoperation and any condition with

concentrated levels of Chlorine, [ Cl- ].Please consult our fiberglass corrosionresistance charts on pg. 183 for specificchemical recommendation data.

Unlike other base materials depicted inthis catalog, fiberglass exhibits uniquephysical property changes when operatingin elevated temperature conditions that area fraction of increase compared to steel oraluminum. Thus, it is advised against usingfiberglass in temperatures greater than200° F.

Please refer to the "Corrosion ResistanceGuide" below for specific applications.

The fiberglass strut systems aremanufactured from glass fiber-reinforcedplastic shapes that meet ASTM E-84, Class1 Flame Rating and self-extinguishingrequirements of ASTM D-635. A surfaceveil is applied during pultrusion to insure aresin-rich surface and ultraviolet resistance.

While polyester is sufficient for most uses,vinyl ester is suitable for a broader range ofenvironments.

B-Line B22 SS6 87401A6B-Line Steel Strut is stamped with:

Traceable to the steel’s originMaterial/FinishB-Line part number designationCompany Name

Technical Data

Technical Data

Strut Systems4

FINISHES

Zinc CoatingsZinc protects steel in two ways. First itprotects the steel as a coating andsecond as a sacrificial anode to repairbare areas such as cut edges, scratches,and gouges. The corrosion protection ofzinc is directly related to its thickness andthe environment. This means a .2 milcoating will last twice as long as a .1 milcoating in the same environment.

Galvanizing also protects cut and drillededges.

Electrogalvanized ZincElectrogalvanized Zinc (also known aszinc plated or electroplated) is theprocess by which a coating of zinc isdeposited on the steel by electrolysisfrom a bath of zinc salts.

A rating of SC3, our standard, provides aminimum zinc coating thickness of .5 mils(excluding hardware, which is SC1 = .2mils).

When exposed to air and moisture, zincforms a tough, adherent, protective filmconsisting of a mixture of zinc oxides,hydroxides, and carbonates. This film isin itself a barrier coating which slowssubsequent corrosive attack on the zinc.This coating is usually recommended forindoor use in relatively dry areas, as itprovides ninety-six hours protection insalt spray testing per ASTM B117.

Chromium/ Zinc Chromium/ Zinc is a corrosion resistantcomposition, which was developed toprotect fasteners and small bulk items forautomotive use. The coating applicationshave since been extended to larger partsand other markets.

Chromium/Zinc composition is anaqueous coating dispersion containingchromium, proprietary organics, and zincflake.

This finish provides 500 hours protectionin salt spray testing per ASTM B117.

Pre-Galvanized Zinc(Mill galvanized, hot dip mill galvanizedor continuous hot dip galvanized) Pre-galvanized steel is produced by coatingcoils of sheet steel with zinc bycontinuously rolling the material throughmolten zinc at the mills. This is alsoknown as mill galvanized or hot dip millgalvanized. These coils are then slit tosize and fabricated by roll forming,shearing, punching, or forming toproduce our pre-galvanized strutproducts.

The G90 specification calls for a coatingof .90 ounces of zinc per square foot ofsteel. This results in a coating of .45ounces per square foot on each side ofthe sheet. This is important whencomparing this finish to hot dipgalvanized after fabrication.

During fabrication, cut edges and weldedareas are not normally zinc coated;however, the zinc near the uncoatedmetal becomes a sacrificial anode toprotect the bare areas after a short periodof time.

Hot Dip Galvanized AfterFabrication (Hot dip galvanized orbatch hot dip galvanized)Hot dip galvanized strut products arefabricated from steel and then completelyimmersed in a bath of molten zinc. Ametallic bond occurs resulting in a zinccoating that completely coats all sufaces,including edges and welds.

Another advantage of this method iscoating thickness. Strut products that arehot dip galvanized after fabrication have aminimum thickness of 1.50 ounces persquare foot on each side, or a total 3.0ounces per square foot of steel,according to ASTM A123.

The zinc thickness is controlled by theamount of time each part is immersed inthe molten zinc bath as well as the speedat which it is removed. The term "doubledipping" refers to parts too large to fitinto the galvanizing kettle and, therefore,must be dipped one end at a time. Itdoes not refer to extra coating thickness.

The layer of zinc which bonds to steelprovides a dual protection againstcorrosion. It protects first as an overallbarrier coating. If this coating happensto be scratched or gouged, zinc'ssecondary defense is called upon toprotect the steel by galvanic action.

Hot-Dip Galvanized After Fabrication isrecommended for prolonged outdoorexposure and will usually protect steel for20 years or more in most atmosphericenvironments and in many industrialenvironments. For best results, a zincrich paint (available from B-Line) shouldbe applied to field cuts. The zinc richpaint will provide immediate protectionfor these areas and eliminate the shorttime period for galvanic action to “heal”the damaged coating.

Anticipated Life of Zinc Coatings In Various Atmospheric Environments

Hot Dip Galvanized

Pre-Galvanized

= Zinc Coating 1.50 Oz./Ft.2 (.0026” Thick)

= Zinc Coating 0.45 Oz./Ft.2 (.00075” Thick)

Rural TropicalMarine

TemperatureMarine

HighlyIndustrial

Lifein

Years

Suburban

Environment

Urban

10

20

30

40

10

36

8

29

7

25

6

21

5

18

3

11

Zn

FeZnFe

ZnO

Technical Data

Technical Data

5Strut Systems

DURA-GREEN™ and DURA- COPPER™ Epoxy CoatingsDURA-GREEN and DURA-COPPER epoxycoatings are water borne epoxy coatingsapplied to B-Line products by a preciselycontrolled cathodic electro-depositionprocess. This process is accomplishedusing a conveyor to transport channeland fittings through several cleaning,phosphatizing and application stages priorto being baked (See diagram below).

This custom-designed paint system isused for painting all channels, channelcombinations, slotted angle, and fittings.

Samples are selected on a routine basisfor Salt Spray (fog) testing to verify thequality of the finish. These tests areperformed in accordance with ASTM B117and evaluated and related according toASTM D1654 (Tables 1 & 2).

The DURA-GREEN and DURA-COPPEREpoxy coatings have been tested andlisted by Underwriters Laboratories inaccordance with “Standard for SurfaceMetal Raceway and Fittings, UL5” and

“Standard for Pipe Hanger Equipment forFire Protection Service, UL203”.

Due to DURA-GREEN’s organically basedcomposition, it seats itself into poroussurfaces more completely and efficientlythan zinc coatings. As these porouscaverns are filled along the materialprofile, the outer finished surfacedemonstrates an increased smoothuniform plane which producesconsiderably less off-gasing when tested.

DURA-GREEN channel meets or exceeds100 level clean room standards. This wasconfirmed by testing the channel inaccordance with Boeing (PCL) Standards,which are more stringent and completethan ASTM E595-93. DURA-GREEN wasfound to be a superior finish, due in part toits proven application process.

PVC CoatingAnother of the corrosion resistant coatingsoffered by B-Line is PVC (polyvinylchloride), applied over steel or aluminumchannel and fittings. The PVC coatingprocess begins by cleaning the product

thoroughly. A bonding coat is applied tothe part and then preheated to atemperature above the melting point of thecoating powder. The product is thenpassed through a fluidized bed of vinylplastic powder where the powder particlesmelt, adhere and flow out to form asmooth continuous coating. The thicknessis controlled by the base metal temperatureand the immersion time in the bed. It isthen post-heated to complete the fusion ofthe outer surfaces.

The standard coating thickness of B-Line’sPVC coated products is 15 mils (.380 mm),plus or minus 5 mils (.125 mm). Since thechemistry, not the thickness of vinyl plasticPVC determines longevity, a coating of 10to 20 mils (.250 to .500 mm) is more thanadequate. If the corrosive conditions aresuch that the plasticizers are leeched out,a thicker coating will do little to extend thelife of a coated product.

For certain environments, a plastisoldipped PVC coating is available onrequest.

PVC coating depends totally on theconcept of encapsulation attached to thebase metal by a bonding agent. If any holeor discontinuity occurs, the corrosiveaction can undercut the base metal to apoint where all that remains is the PVC.

In the event of field cuts or any otherdamage to the coating, a liquid PVC patch,available from B-Line, must be applied tomaintain the integrity of the coating. Afterthe installation is complete, a thoroughinspection should be performed to assurethe absence of voids, pinholes, or cuts.

˛ Unscribed Scribed 1/8” (3.2) CreepageType of Finish 5% Failure (1) from Scribe (1)

B-Line DURA-GREEN Epoxy 1000 Hours 312 Hours

Mill Galv. (Pre-Galv.) G90 192 Hours 288 Hours

Perma-Green 438 Hours 231 Hours

Zinc Chromate 36 Hours 96 Hours

Industry Green (Range) 10 to 36 Hours 4 to 30 Hours

SALT SPRAY TEST RESULTS

DURA-GREEN™/DURA-COPPER™ EPOXY COATING PROCESS

TANK 1 TANK 2 TANK 3 TANK 4 TANK 5 TANK 6 TANK 7 TANK 8 BAKE OVENThe channel A rinse is A phosphatized The material A pre-deionized The electro- The first The final rinse The curingand parts are applied to sealer is applied moves through rinse prepares coating tank post rinse insures a process takes 20thoroughly remove to insure clear water rinse the metal for the applies a removes any smooth, minutes at acleaned and insoluble salts corrosion to remove excess cathodic electro- uniform coat unelectrically nonblemish baking temperaturephosphatized. and unreacted resistanceand phosphates. coating. of epoxy paint attracted surface. of 375° F (199° C).

phosphates. paint adhesion. to the entire solids.surface.

(1) All salt spray (fog) tests conducted in accordance with ASTM B117 and evaluated andrated according to ASTM D1654 Tables 1 & 2. Tests are performed and certified by anindependent testing laboratory.

Technical Data

Technical Data

Strut Systems6

WELDING

The welding procedures used in thefabrication of our steel products are inaccordance with American WeldingSociety Standards. To achieve thehighest quality in our manufacturingprocesses, our welders follow standardsset by AWS Code.

Spot WeldingSpot welded back-to-back channel ismanufactured using a modern DCpowered resistance welder controlledby a microprocessor. This produces aseries of spot welds with speed andconsistency. Consistency is one of themost important advantages in specifyingback-to-back channel. Variables such as

weld sequence, speed and duration arecarefully controlled and monitored by asophisticated electronic control system.A statistical quality control program,combining destructive and non-destructive testing, is used to ensurehigh quality welds.

MIG WeldingMIG welded, more properly called gasmetal arc welded (GMAW) combinationchannels and fittings, are producedwhen physical dimensions or certaincombinations require a weld processother than automatic spot welding. Thesame quality control requirements areimposed on MIG welded and spot-welded products.

Quality AssuranceOur Quality Assurance Program hasbeen developed and implemented forcompliance with ISO9001:2008. Wealso complies with various industrystandards and specifications. We haveextensive experience in suppling metalframing components for the nuclearpower generating industry, and uponrequest can provide products incompliance with 10CFR50 Appendix B,NQA-1 and 10CFR21. For moreinformation on our quality capabilityplease visitwww.cooperbline.com/nuclear.

MIG WeldSpot Weld

Technical Data

Technical Data

7Strut Systems

CORROSIONAll metal surfaces are affected bycorrosion. Depending on the physicalproperties of the metal and theenvironment to which it is exposed,chemical or electromechanical corrosionmay occur.

Atmospheric CorrosionAtmospheric corrosion occurs whenmetal is exposed to airborne liquids,solids or gases. Some sources ofatmospheric corrosion are moisture, salt,dirt and sulphuric acid. This form ofcorrosion is typically more severeoutdoors, especially near marineenvironments.

Chemical CorrosionChemical corrosion takes place whenmetal comes in direct contact with acorrosive solution. Some factors whichaffect the severity of chemical corrosioninclude: chemical concentration level,duration of contact, frequency ofwashing, and operating temperature.

Storage CorrosionWet storage stain (white rust) is causedby the entrapment of moisture betweensurfaces of closely packed and poorlyventilated material for an extendedperiod. Wet storage stain is usuallysuperficial, having no affect on theproperties of the metal.

Light staining normally disappears withweathering. Medium to heavy buildupshould be removed in order to allow theformation of normal protective film.Proper handling and storage will help toassure stain-free material. If productarrives wet, it should be unpacked anddried before storage. Dry material shouldbe stored in a well ventilated “lowmoisture” environment to avoidcondensation formation. Outdoor storageis undesirable, and should be avoidedwhenever possible.

Galvanic CorrosionGalvanic corrosion occurs when two ormore dissimilar metals are in contact inthe presence of an electrolyte (ie.moisture). An electrolytic cell is createdand the metals form an anode or acathode depending on their relativeposition on the Galvanic Series Table.The anodic material will be the oneto corrode. Anodic or cathodiccharacteristics of two dissimilar metalswill depend on the type of each material.For example: If zinc and steel are incontact, the zinc acts as the anode andwill corrode; the steel acts as the

cathode, and will be protected. If steeland copper are in contact, the steel isnow the anode and will corrode.The rate at which galvanic corrosionoccurs depends on several factors:

1. The relative position on the GalvanicSeries Table - the further apart materialsare in the Galvanic Series Table, thegreater the potential for corrosion of theanodic material.

GALVANIC SERIES IN SEA WATER

Metals in descending order of activity in the presence of an electrolyte.

2. The amount and concentration ofelectrolyte present - an indoor, dryenvironment will have little or no galvaniccorrosion compared to a wetatmosphere.

3. The relative size of the materials - asmall amount of anodic material incontact with a large cathodic material willresult in greater corrosion. Likewise, alarge anode in contact with a smallcathode will decrease the rate of attack.

MagnesiumMagnesium AlloysZincBerylliumAluminum - Zinc Alloys (7000 series)Aluminum - Magnesium Alloys (5000 series)Aluminum (1000 series)Aluminum - Magnesium Alloys (3000 series)Aluminum - Magnesium - Silicon Alloys (6000 series)CadmiumAluminum - Copper Alloys (2000 series)Cast Iron, Wrought Iron, Mild SteelAustenitic Nickel Cast IronType 410 Stainless Steel (active)Type 316 Stainless Steel (active)Type 304 Stainless Steel (active)Naval Brass, Yellow Brass, Red BrassTin CopperLead-Tin SoldersAdmiralty Brass, Aluminum BrassManganese BronzeSilicon BronzeTin BronzeType 410 Stainless Steel (passive)Nickel - SilverCopper Nickel AlloysLeadNickel - Aluminum BronzeSilver SolderNickel 200SilverType 316 Stainless Steel (passive)Type 304 Stainless Steel (passive)Incoloy 825Hastelloy BTitaniumHastelloy CPlatinumGraphite

Mor

e A

nodi

c

Anodic End

Cathodic End

Technical Data

Technical Data

Strut Systems8

Type 304 Type 316 ZincChemical Aluminum Dura-Green PVC Stainless Stainless Coated SteelAcetic Acid 10% R NR R R R NRAcetic Acid 2% R F R R R NRAcetone R R NR R R RAmmonium Hydroxide-Conc. R R R R R –Ammonium Hydroxide 10% F R R R R –Ammonium Hydroxide 2% R R R R R –Benzene R R NR R R –Bromine Water NR R R NR NR –Butanol (Butyl Alcohol) R R R R R RCarbon Disulfide R R NR R R –Carbon Tetrachloride F R F R R –Chlorine Water R R R NR F RCutting Oil – R – – – –Diethanolamine R R NR – – NREthanol R R R R R REthyl Acetate R R NR – – REthylene Dichloride F R NR – – RFormaldehyde 20% R R R R R RGasoline R R R R R RGlycerine R R R R R RHousehold Detergent 10% F R R R R –Hydrochloric Acid 40% NR NR R NR NR NRHydrochloric Acid 10% NR F – NR NR NRHydrochloric Acid 2% NR F – NR NR NRHydrogen Peroxide 30% R NR R R R –Hydrogen Peroxide 3% R R – R R –Hydrogen Sulfide (Gas) R R R F R –JP-4 Jet Fuel R R R R R –Lactic Acid 85% F R R NR – –Latex R R – R R NRLinseed Oil Fatty Acid R F R R R –Methanol R R R R R RMethyl Ethyl Ketone R R NR – – RMethyl Isobutyl Ketone R R NR – – RMineral Spirits R R – – – –Motor Oil-10W R R R R R RNaphtha, VM&P R R R R R RNitric Acid 2% F NR R R R –Perchloroethylene R R – – – NRPetroleum Ether – R – R R RPhenol 10% R R NR R R RPhosphoric Acid 2% F NR R R R NRPotassium Hydroxide 50% NR R R R R –Potassium Hydroxide 10% NR R R R R –Potassium Hydroxide 2% NR R R R R –Sodium Chloride 25% F R R R R FSodium Hydroxide 50% NR R R R R NRSodium Hydroxide 10% NR R R R R FSodium Hydroxide 2% NR R R – – –Sodium Hypochlorite-C1. 10% F R R – – –Sodium Hypochlorite-C1. 6% F R R NR R –Sulfuric Acid 2% F NR R NR R NRTall Oil Fatty Acid (Syfate 94) R R R – – –Tannic Acid 50% F R R R R –Water-Deionized R R R R R FWater-Sea F F R R R FWater-Tap R R R F F RXyol R R NR – – –

Fiberglass corrosion chart on page 183.

The corrosion data given in this table is for general comparison only.The presence of contaminates and the effect of temperature in chemical environments can greatly affect the corrosion of any material.B-Line strongly suggests that field service tests or simulated laboratory tests using actual environmental conditions be conducted in order to determine the proper materials and finishes to be selected.

R=RecommendedF=May be used under some conditionsNR=Not Recommended–Information not available

Technical Data

Technical Data

9Strut Systems

ChannelMetal framing channel is cold formed on our modernrolling mills from 12 Ga. (2.6mm), 14 Ga. (1.9mm), and16 Ga. (1.5mm) low carbon steel strips. A continuousslot with inturned lips provides the ability to makeattachments at any point.

Lengths & TolerancesAll channels excluding ‘SH’ style± 1/8” (3.2mm) on 10’ (3.05m) and± 3/16” (4.76mm) on 20’ (6.09m)

All ‘SH’ channels only± 1/4” (6.35mm) on 10’ (3.05m) and± 1/2” (12.70mm) on 20’ (6.09m)

Custom lengths are available upon request.

SlotsSlotted series of channels offer full flexibility. A varietyof pre-punched slot patterns eliminate the need forprecise field measuring for hole locations. Slots offerwide adjustments in the alignment and bolt sizing.

HolesA variety of pre-punched 9/16” (14.3 mm) diameter holepatterns are available in our channels. These holepatterns provide an economical alternative to costlyfield drilling required for many applications.

KnockoutsWhen used with series B217-20 Closure Strips,knockout channels can be used to provide aneconomical U.L. listed surface raceway. Channels arefurnished with 7/8” (22.2 mm) knockouts on 6” (152 mm)centers, allowing for perfect fixture alignment on spansup to 20’ (6.09 m).

Materials & Finishes (Unless otherwise noted)Steel: Plain & Pre-galvanized12 Ga. (2.6), 14 Ga. (1.9) and 16 Ga. (1.5)

Note: A minimum order may apply on special material and finishes.

Design Load (Steel & Stainless Steel)The design loads given for strut beam loads are based on a simple beam condition using an allowable stress of25,000 psi. This allowable stress results in a safety factor of 1.68. This is based upon virgin steel minimum yieldstrength of 33,000 psi cold worked during rolling to an average yield stress of 42,000 psi.For aluminum channel loading multiply steel loading by a factor of 0.38.

WeldingWeld spacing is maintained between 21/2 inches (63.5 mm) and 4 inches (101.6 mm) on center. Through highquality control testing of welded channels and continuous monitoring of welding equipment, B-Line providesthe most consistent combination channels available today.

MetricMetric dimensions are shown in parentheses. Unless noted, all metric dimensions are in millimeters.

FinishCode Finish SpecificationPLN Plain ASTM A1011, 33,000 PSI

min. yieldGRN DURA-GREEN™GLV Pre-Galvanized ASTM A653 33,000 PSI

min. yieldHDG Hot-Dipped Galvanized ASTM A123YZN Yellow Zinc Chromate ASTM B633 SC3 Type IISS4 Stainless Steel Type 304 ASTM A240SS6 Stainless Steel Type 316 ASTM A240AL Aluminum Aluminum 6063-T6

Chann

el & Combinations

Metal Framing Channels

Strut Systems14

Material & Thickness * Channel Hole Pattern **Channel

Dimensions Stainless SH S H17/8 TH KO6Steel

Channel Height WidthType Steel Alum. Type Type

304 316

1 2 3 4

B11 31/4” (82.5) 15/8” (41.3) 12 Ga. .105 – – 1 1 1 – 1B12 27/16” (61.9) 15/8” (41.3) 12 Ga. .105 – – 1 2 1 1 2 – 1 2B22 15/8” (41.3) 15/8” (41.3) 12 Ga. .105 12 Ga. 12 Ga. 1 2 3 4 1 3 1 2 3 1 1 2B24 15/8” (41.3) 15/8” (41.3) 14 Ga. .080 14 Ga. 14 Ga. 1 2 3 4 1 1 2 3 – 1 2B26 15/8” (41.3) 15/8” (41.3) 16 Ga. – – – 1 1 1 – 1B32 13/8” (34.9) 15/8” (41.3) 12 Ga. – 12 Ga. – 1 3 1 1 3 – 1B42 1” (25.4) 15/8” (41.3) 12 Ga. – 12 Ga. – 1 3 1 1 3 – 1B52 13/16” (20.6) 15/8” (41.3) 12 Ga. – 12 Ga. 12 Ga. 1 3 4 1 1 – 1B54 13/16” (20.6) 15/8” (41.3) 14 Ga. .080 14 Ga. 14 Ga. 1 2 3 4 1 1 2 3 4 – 1 2B56 13/16” (20.6) 15/8” (41.3) 16 Ga. – – – 1 1 1 – 1B62 13/16” (20.6) 13/16” (20.6) 18 Ga. – – – – – – – –B72 13/32” (10.3) 13/16” (20.6) 18 Ga. – – – – – – – –

SELECTION CHARTfor Channels, Materials and Hole Patterns

The selection has been prepared to provide a reference for available channel, materials and hole patterns. Material typesavailable for various hole patterns are defined by numbers 1 thru 4.Some stainless steel channels with hole patterns are available on special order only.

*Metric equivalent for thicknesses shown in chart. **1 - Steel12 Ga. = 2.6 mm 18 Ga. = 1.2 mm 2 - Aluminum14 Ga. = 1.9 mm .105 = 2.6 mm 3 - Type 304 Stainless Steel16 Ga. = 1.5 mm .080 = 2.0 mm 4 - Type 316 Stainless Steel

Properties may vary due to commercial tolerances of the material.

Channel Part NumberingExample:

B22 SH - 120 SS4

Channel Type Hole Patterns Length Material/FinishB11 SH (pg. 40) 120 GRNB12 S (pg. 40) 240 GLVB22 † H178 (pg. 40) HDGB24 † TH (pg. 41) YZNB26 K06 (pg. 41) SS4B32 SHA (pg. 41) SS6B42 S58 (pg. 42) ALB52 † M (pg. 42)B54 † H25 (pg. 43)B56 H112 † (pg. 42)B62 * Leave blank for no hole patternB72

9/16” x 11/8”slots on 2” centers

13/32” x 3”slots

9/16”diameterholes

9/16”diameteron 17/8”centers

7/8”diameterknockouts

Reference page 14 for general fitting and standard finish specifications.

Channel &

Combinatio

nsChannel

15Strut Systems

Areas of Moment of Section Radius of Moment of Section Radius ofChannel Weight Section Inertia (I) Modulus (S) Gyration (r) Inertia (I) Modulus (S) Gyration (r)

lbs./ft. kg/m sq. in. cm2 in.4 cm4 in.3 cm3 in. cm in.4 cm4 in.3 cm3 in. cm

B12 2.484 (3.70) .731 (4.71) .5349 (22.26) .4061 (6.65) .856 (2.17) .3377 (14.06) .4156 (6.81) .680 (1.73)

B12A 4.969 (7.40) 1.462 (9.43) 2.9036 (120.86) 1.1915 (19.52) 1.409 (3.58) .6756 (28.12) .8315 (13.63) .680 (1.73)

X - X Axis Y - Y Axis

B12• Thickness: 12 Gauge (2.6 mm)• Standard lengths: 10’ (3.05 m) & 20’ (6.09 m)• Standard finishes: Plain, DURA-GREEN™, Pre-Galvanized,Hot-Dipped Galvanized, Aluminum

• Weight: 2.47 Lbs./Ft. (3.67 kg/m)

Calculations of section properties are based on metal thicknesses as determined by the AISI Cold-Formed Steel Design Manual.

15/8”(41.3)

27/16”(61.9)

27/16”(61.9)

47/8”(123.8)

31/4”(82.5)

15/8”(41.3)

27/16”(61.9)

1.1199(28.4)15/8”

(41.3)

13/16”(20.6)

13/16”(20.6)

1.1197(28.4)

3/8”(9.5)

3/8”(9.5)

9/32”(7.1)

X

Y

YX

X

X

Y

Y

Y

X

X

Y

SECTION PROPERTIES

B12AWt. 4.94 Lbs./Ft. (7.35 kg/m)

B12BWt. 4.94 Lbs./Ft. (7.35 kg/m)

Reference page 14 for general fitting and standard finish specifications.

Chann

el & Combinations

7/8”(22.2)

B12 Channel & Combinations

Strut Systems18

Reference page 14 for general fitting and standard finish specifications.

Height H WeightPart No. Thickness In. mm Lbs./Ft. kg/m

B11SH 12 Ga. (2.6) 31/4” (82.5) 2.97 (4.42)

B12SH 12 Ga. (2.6) 27/16” (61.9) 2.39 (3.55)

B22SH 12 Ga. (2.6) 15/8” (41.3) 1.82 (2.71)

B24SH 14 Ga. (1.9) 15/8” (41.3) 1.34 (1.99)

B26SH 16 Ga. (1.5) 15/8” (41.3) 1.07 (1.59)

B32SH 12 Ga. (2.6) 13/8” (34.9) 1.62 (2.41)

B42SH 12 Ga. (2.6) 1” (25.4) 1.36 (2.02)

B52SH 12 Ga. (2.6) 13/16” (20.6) 1.19 (1.77)

B54SH 14 Ga. (1.9) 13/16” (20.6) .91 (1.35)

B56SH 16 Ga. (1.5) 13/16” (20.6) .80 (1.19)

B11SH THRU B56SHSH TYPE CHANNEL• For beam loads use 90% of Channel Loading Chart

2” (50.8)Typ. 9/16” x 11/8” Slots

(14.3) (28.6)

H

Height H WeightPart No. Thickness In. mm Lbs./Ft. kg/m

B11S 12 Ga. (2.6) 31/4” (82.5) 2.94 (4.37)

B12S 12 Ga. (2.6) 27/16” (61.9) 2.36 (3.51)

B22S 12 Ga. (2.6) 15/8” (41.3) 1.79 (2.66)

B24S 14 Ga. (1.9) 15/8” (41.3) 1.32 (1.96)

B26S 16 Ga. (1.5) 15/8” (41.3) 1.06 (1.58)

B32S 12 Ga. (2.6) 13/8” (34.9) 1.59 (2.36)

B42S 12 Ga. (2.6) 1” (25.4) 1.33 (1.98)

B52S 12 Ga. (2.6) 13/16” (20.6) 1.16 (1.72)

B54S 14 Ga. (1.9) 13/16” (20.6) .89 (1.32)

B56S 16 Ga. (1.5) 13/16” (20.6) .79 (1.17)

B11S THRU B56SS TYPE CHANNEL• For beam loads use 90% of Channel Loading Chart

4” (101.6)Typ.

13/32” x 3” Slots(10.3) (76.2)

H

Height H WeightPart No. Thickness In. mm Lbs./Ft. kg/m

B11H17/8 12 Ga. (2.6) 31/4” (82.5) 3.00 (4.46)

B12H17/8 12 Ga. (2.6) 27/16” (61.9) 2.42 (3.60)

B22H17/8 12 Ga. (2.6) 15/8” (41.3) 1.85 (2.75)

B24H17/8 14 Ga. (1.9) 15/8” (41.3) 1.36 (2.02)

B26H17/8 16 Ga. (1.5) 15/8” (41.3) 1.09 (1.62)

B32H17/8 12 Ga. (2.6) 13/8” (34.9) 1.65 (2.45)

B42H17/8 12 Ga. (2.6) 1” (25.4) 1.39 (2.07)

B52H17/8 12 Ga. (2.6) 13/16” (20.6) 1.22 (1.81)

B54H17/8 14 Ga. (1.9) 13/16” (20.6) .93 (1.38)B56H17/8 16 Ga. (1.5) 13/16” (20.6) .82 (1.22)

B11H17/8 THRU B56H17/8H17/8 TYPE CHANNEL• For beam loads use 90% of Channel Loading Chart

9/16” Dia. Holes(14.3)

17/8” (47.6)Typ.

H

Chann

el & Combinations

Channel Hole Patterns

Strut Systems40