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Bar GratingWelded Steel GratingSwage-Locked Aluminum GratingMaterial Selection(pages 14–35)(pages 37-40)Standard Welded: AMICO ’s welded grating isused universally for walkway and mezzaninedecking applications. It is ideal for most generalindustrial and commercial uses. Standard weldedgrating is generally considered to include gratingwith bearing bars spaced at 1-3/16" or 15/16"and is available in carbon or stainless steel.Swage-locked aluminum grating is manufacturedwith either an “I” or rectangular bearing bar.These bars are permanently locked to the crossrods with a swaging process which reshapesthe rods. Because of the flange width, I-barsreduce the open spaces of the grating yet I-barswage-locked is lighter weight and less costlythan a rectangular bar grating with the same barthickness.Carbon Steel: Carbon steel provides aneconomical, high strength grating for use inmost industrial and commercial applications.Close-Mesh: Close-mesh grating is similar tostandard grating except that the spacing of thebearing bars is closer, ranging from 7/16" to13/16". It is suitable for applications requiringnarrow spacing for aesthetic or functional reasons. It is available in carbon or stainless steel.Railroad: Welded grating with spacings of 1-9/16"and 1-11/16" meet the requirements for AARapproved safety walkway products. This gratingis designed specifically for use as railcar brakesteps, running boards, walkways and platforms.Duo-Grip Aluminum Planks(page 48)Duo-Grip planking is a one piece extrudedplank with exceptional strength and stiffness-toweight ratio due to its I-beam ribs. It is availablein either unpunched, square punched or rectangular punched styles to suit lighting and ventilation considerations. The design provides continuous walking surface for additional safety.Heavy-Duty: Heavy-Duty uses thicker (1/4",5/16", 3/8") and deeper bearing bars. Althoughthe tables show bars as deep as 6", deepergrating can be custom fabricated on request.Heavy-Duty is used for airfields, highways,industrial floors, ramps, docks, reinforcedconcrete areas and specialty applications.Riveted Steel and Aluminum GratingPress-Locked Steeland Aluminum GratingRiv-Dexteel (pages 15–21 / steel and pages 41–47 / aluminum)Because this grating is a system of interlocking,perpendicular bars, it provides a smooth cleanlook ideal for architectural applications such asgrilles, dividers and screens. It is used in thesame structural applications as its welded steeland rectangular aluminum counterparts. Materials include carbon steel, stainless steel or aluminum. Spacings range from 7/16" to 1-3/16".(pages 50–51 / steel and pages 52–53 / aluminum)Riveted grating is especially practical for areaswhere rolling loads are used because of itssmoother surface. It is available in bothaluminum and steel.(pages 54–55)Riv-Dexteel is a high strength grating whichincorporates a truss style design through the useof a reticulated riveted bar in conjunction with astraight bearing bar. It has been used for nearly75 years as bridge decking, curb inlet grates,industrial flooring, driveways across culverts and heavy traffic areas.Aluminum: Lightweight, corrosion resistant andnon-sparking alloys make aluminum ideal for usein chemical, petroleum, hydro and food processing plants, sewage, water and waste treatmentfacilities; munitions plants and other volatileareas; aboard ship; etc.Stainless Steel: Stainless steel is ideal for use incaustic atmospheres where corrosion resistanceand minimum carbide precipitation are importantconsiderations. It is especially applicable forchemical, food and hydro processing areas.Painted: One coat of manufacturer’s standardpaint, applied in accord with the manufacturer’sstandard practice. One shop coat of manufacturer’s standard paint is designed to protect thegrating and/or treads from the elements duringtransit. Meets NAAMM’s Metal Bar Grating Manual MBG531-00. (Note: Paint is not intended as afinish coat.) Gratings and/or treads stored at thejobsite shall be covered or under roof. Requiredcovering is not the responsibility of the gratingand/or tread supplier.Galvanizing: Grating specified to be galvanizedshall have their exposed surfaces zinc-coated bythe hot dip process after fabrication, with acoating of not less than 1.8 oz/ft2 (550 g/m2 ofcoated surface).13

Aluminum Bar GratingCorrosion resistant, non-sparking, rustproof aluminum grating has manyapplications due to its light weight and high strength. It is ideally suitedfor use in corrosive environments and finds wide applications as walkways and platforms in sewage treatment plants, refineries, chemical processing plants, pumping and compressor stations, and aboard ships andbarges. Because it does not rust, it is commonly used in breweries, bottling plants, and food preparation and storage facilities. In munitionplants, other volatile industries and areas, its non-sparking propertiesmake it a must for safety. It is available in standard or anodized finishes.Press-Locked Rectangular Bar Grating is constructed with the twoclose-tolerance slotted bars bonded together (positioned every 2" or 4")using tremendous hydraulic pressure. Permanent locking is achieved byforcing the deep cross bar into the bearing bar. Both the cross bars andthe bearing bars provide walking surfaces in the press-locked design.Rectangular bar grating in either the swage-locked or press-lockedstyles is your best choice when lateral stiffness is required. The rectangular bar is also available in a serrated surface for additional safety.Swage-Locked I-Bar Grating is the most widely used and providesthe strength equal to a rectangular bar of the same depth, but at far lessweight and cost. The I-bars are permanently locked to the cross rods(positioned every 2" or 4") by a swaging process.Swage-Locked Rectangular Bar Grating uses the swaging processto permanently lock the cross rods (positioned every 2" or 4") to the rectangular bars.SWAGE-LOCKED I-BAR ALUMINUM GRATING36SWAGE-LOCKED RECTANGULAR BAR ALUMINUM GRATINGPRESS-LOCKED RECTANGULAR BAR ALUMINUM P-47-AP-2

Aluminum Bar GratingI-BAR SWAGE-LOCKED 1-3/16" C/C Bearing Bars19-SI-4Cross Rods 4" C/C19-SI-2Cross Rods 2" C/CLOAD & DEFLECTION TABLEBarSize1" x 1/4"1-1/4" x 1/4"1-1/2" x 1/4"1-3/4" x 1/4"2" x 1/4"2-1/4" x 1/4"2-1/2" x SPAN (Direction of Bearing Bar)Sec. ModPer Ft.Of 14210.2597800.29217540.233SI-19 PANEL WIDTH (inches)No. of Bars231/4" Bar111/16 27/8No. of Bars 21221/4" Bar241/4 51813160.415U safe uniform load, psf (page 93)C safe concentrated load, psf (page 93)D deflection, inchesE modulus of elasticity, 10,000,000 psiF fiber stress, 12,000 psiMaterial: ASTM B-221, 6063 or 6061Deflection: Spans and loads to the right ofthe bold line exceed 1/4” deflection for uniform load of 100 psf which provides safepedestrian comfort. These can beexceeded for other types of loads withengineer’s approval.General: Loads and deflections are78"theoretical and based on183static loading.0.869Finish: Mill finish unless595otherwise specified.0.695 84"2392060.761 0.8827777220.608 0.706 96"3032612000.676 0.784 1.0249849147990.541 0.627 0.819 108"3743222471950.608 0.706 0.922 1.1661215 11289878770.487 0.564 0.737 0.933Note: Includes 1/4" (1/8" each side) for extended cross rods on swage-locked /8 2713/16131415143/4 1515/16 171/816185/16171819191/2 2011/16 217/820231/16333/4 3415/16 361/837

Aluminum Bar GratingI-BAR SWAGE-LOCKED 15/16" C/C Bearing Bars15-SI-4Cross Rods 4" C/C15-SI-2Cross Rods 2" C/CLOAD & DEFLECTION TABLEBarSize1" x 1/4"SymbolApprox.Weightpsf15-SI-42.420.4001-1/4" x 1/4"1-1/2" x 1/4"1-3/4" x 1/4"2" x I-25.521.2251.6002-1/4" x 1/4"2-1/2" x 1/4"SPAN (Length of Bearing Bar)Sec. ModPer Ft.Of 000.32418000.2599880.29222220.23312SI-15 PANEL WIDTH (inches)No. of Bars1/4" BarNo. of Bars1/4" 4810670.5184500.57613500.4615560.51816670.415U safe uniform load, psf (page 93)C safe concentrated load, psf (page 93)D deflection, inchesE modulus of elasticity, 10,000,000 psiF fiber stress, 12,000 psiMaterial: ASTM B-221, 6063 or 6061Deflection: Spans and loads to the right ofthe bold line exceed 1/4” deflection for uniform load of 100 psf which provides safepedestrian comfort. These can beexceeded for other types of loads withengineer’s approval.General: Loads and deflections are78"theoretical and based on232static loading.0.869Finish: Mill finish unless754otherwise specified.0.695 84"3032610.761 0.882985914108"0.608 0.706 96"3833312532000.676 0.784 1.024 1.2961246 1157 10139000.541 0.627 0.819 1.0374734083132470.608 0.706 0.922 1.1661538 1429 1250 11110.487 0.564 0.737 0.933Note: Includes 1/4" (1/8" each side) for extended cross rods on swage-locked 16231314151013/16 113/4 1211/16 135/8313233342315/16 247/8 2513/16 263/4 2711/16 /1637173/838185/1639323/8335/16341/4353/16361/8

Aluminum Bar GratingI-BAR SWAGE-LOCKED 11/16" C/C Bearing Bars11-SI-411-SI-2Cross Rods 4" C/CCross Rods 2" C/CLOAD & DEFLECTION TABLEBarSize1" x 1/4"1-1/4" x 1/4"1-1/2" x 1/4"1-3/4" x 1/4"2" x 1/4"2-1/4" x 1/4"2-1/2" x 2.1822.7613.409SI-11 PANEL WIDTH (inches)SPAN (Length of Bearing Bar)Sec. ModPer Ft.Of 814550.5186140.57618410.4617580.51822730.415U safe uniform load, psf (page 93)C safe concentrated load, psf (page 93)D deflection, inchesE modulus of elasticity, 10,000,000 psiF fiber stress, 12,000 psiMaterial: ASTM B-221, 6063 or 6061Deflection: Spans and loads to theright of the bold line exceed 1/4”deflection for uniform load of 100 psf78"which provides safe pedes232trian comfort. These can be1.014exceeded for other types of755loads with engineer’s0.811 84"approval.316273General:0.869 1.008Loads and1028955deflections are108"0.695 0.806 96"theoretical and413356273215based on0.761 0.882 1.152 1.458static loading.1343 1247 1091970Finish: Mill0.608 0.706 0.922 1.166finish unless523451345273otherwise0.676 0.784 1.024 1.296specified.1699 1578 1381 12270.541 0.627 0.819 1.0376465574263370.608 0.706 0.922 1.1662098 1948 1705 15150.487 0.564 0.737 0.933Note: Includes 1/4" (1/8" each side) for extended cross rods on swage-locked (SI).No. of Bars2345678910111213141516171819201/4" Bar13/1617/829/1631/4 315/16 45/855/166611/16 73/881/1683/497/16 101/8 1013/16 111/2 123/16 127/8 139/16No. of Bars 212223242526272829303132333435363738391/4" Bar141/4 1415/16 155/8 165/1617 1711/16 183/8 191/16 193/4 207/16 211/8 2113/16 221/2 233/16 237/8 249/16 251/4 2515/16 265/8No. of Bars 40414243444546474849505152531/4" Bar275/1628 2811/16 293/8 301/16 303/4 317/16 321/8 3213/16 331/2 343/16 347/8 359/16 361/439

Aluminum Bar GratingI-BAR SWAGE-LOCKED CLOSE-MESH 1/2" C/C Bearing Bars8-SI-48-SI-2Cross Rods 4" C/CCross Rods 2" C/CLOAD & DEFLECTION TABLEBarSizeApprox.WeightpsfSymbol8-SI-41" x 1/4"4.220.7501-1/4" x 1/4"1-1/2" x 1/4"1-3/4" x 1/4"2" x .0002-1/4" x 1/4"2-1/2" x 1/4"SPAN (Direction of Bearing Bar)Sec. ModPer Ft.Of 8 PANEL WIDTH (inches)No. of Bars1/4" BarNo. of Bars1/4" BarNo. of Bars1/4" 831250.415U safe uniform load, psf (page 93)C safe concentrated load, psf (page 93)D deflection, inchesE modulus of elasticity, 10,000,000 psiF fiber stress, 12,000 psiMaterial: ASTM B-221, 6063 or 6061Deflection: Spans and loads tothe right of the bold line exceed1/4” deflection for uniform load78" 84"of 100 psf which pro320276vides safe pedestrian1.014 1.176comfort. These can be1038964exceeded for other0.811 0.941 96"types of loads435375287with engineer’s0.869 1.008 1.317approval.1413 1313 1148General: Loads0.695 0.806 1.053 108"and deflections568490375296are theoretical0.761 0.882 1.152 1.458and based on1846 1714 1500 1333static loading.0.608 0.706 0.922 1.166Finish: Mill719620475375finish unless0.676 0.784 1.024 1.296otherwise2337 2170 1898 1688specified.0.541 0.627 0.819 1.0378887655864630.608 0.706 0.922 1.1662885 2679 2344 20830.487 0.564 0.737 0.933Note: Includes 1/4" (1/8" each side) for extended cross rods on swage-locked /234341/235351/236