titeweld 7-tw-4 welded steel

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800.711.4939

BAR GRATING

TiteWeld® 7-TW-4 Welded Steel IN STOCK!!

7-TW-4

SPAN SPAN

7/16"

7-TW-4 4"

7/16"

7-TW-2 2"

7-TW-4

TiteWeld® super narrow welded grating - ideal for those very tight spacing requirements when you need maximum “roll-a-bility.”

TiteWeld® satisfies both ADA comfort requirements for wheel chairs and walking pedestrians.

TiteWeld® is IN STOCK and ready to ship.

Panel Width Chart (in.) 7-TW-4 TiteWeld® Dimensions Are Out-to-Out of Bearing Bars** No. of Bars 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3/16" Bars 5/8 1-1/16 1-1/2 1-15/16 2-3/8 2-13/16 3-1/4 3-11/16 4-1/8 4-9/16 5 5-7/16 5-7/8 6-5/16 6-3/4 No. of Bars 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 3/16" Bars 7-3/16 7-5/8 8-1/16 8-1/2 8-15/16 9-3/8 9-13/16 10-1/4 10-11/16 11-1/8 11-9/16 12 12-7/16 12-7/8 13-5/16 No. of Bars 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 3/16" Bars 13-3/4 14-3/16 14-5/8 15-1/16 15-1/2 15-15/16 16-3/8 16-13/16 17-1/4 17-11/16 18-1/8 18-9/16 19 19-7/16 19-7/8 No. of Bars 47 48 49 50 51 52 53 54 55 3/16" Bars 20-5/16 20-3/4 21-3/16 21-5/8 22-1/16 22-1/2 22-15/16 23-3/8 23-13/16

**Add 1/4" for extended cross bars. Deduct 1/16" for 1/8" bearing bars. Standard panel widths indicated in bold.

*Based on 27.429 bars/ft. of grating width. Bearing bars 7/16" c.c. Add .6 lbs./sq. ft. for 7-TW-2. 1/8" bearing bars available upon inquiry. Note: Grating for spans to the left of the heavy line have a deflection less than 1/4" for uniform loads of 100 lbs./sq. ft. This is the maximum deflection to afford pedestrian comfort, and can be exceeded for other types of load at the discretion of the engineer. The actual “Ped (pedestrian) Span” under this condi-tion is shown above for each size of grating. When serrated grating is specified, the depth of grating required for a specific load will be 1/4" greater than that shown in these tables. 3/4" x 3/16" serrated grating is NOT available.

IN STOCK!!

ADA Compliant

Wt.*Lbs.

Sq. Ft.

13.73

18.09

22.45

26.81

31.20

35.59

39.92

44.31

UDCDUDCDUDCDUDCDUDCDUDCDUDCDUDCD

ClearSpan

2'- 0" 2'- 6" 3'- 0" 3'- 6" 4'- 0" 4'- 6" 5'- 0" 5'- 6" 6'- 0" 6'- 6" 7'- 0" 8'- 0"1446.0991446.0792571.0742571.0604018.0604018.0485786.0505786.0407875.0437875.034

10286.037

10286.030

13018.033

13018.026

16072.030

16072.030

926.1551157.1241646.1162057.0932571.0933214.0743703.0784629.0625040.0676300.0536583.0588229.0478332.052

10414.041

10286.047

12857.037

643.223964.1791143.1681714.1341786.1342679.1072571.1123857.0893500.0965250.0774572.0846857.0675786.0748679.0607143.067

10714.054

472.304827.243840.2281469.1821312.1822296.1461889.1523306.1222571.1304500.1043359.1145878.0914251.1017439.0815248.0919184.073

362.398723.318643.2981286.2381004.2382009.1911446.1992893.1591969.1703938.1362571.1495143.1193255.1326509.1064018.1198036.095

286.503643.402508.3771143.302794.3021786.2411143.2512571.2011556.2163500.1722032.1894572.1512571.1685786.1343175.1517143.121

231.620579.497411.4651029.373643.3721607.298926.3102314.2481260.2663150.2131646.2334114.1862083.2705207.1662571.1866429.149

340.563935.451531.4501461.360765.3752104.3001041.3222864.2581360.2823740.2251721.2504734.2002125.2255844.180

286.671857.536446.5361339.429643.4471929.358875.3832625.3061143.3353429.2681446.2984339.2381786.2685357.215

380.6291236.503548.5251780.420746.4502423.360974.3933165.3151232.3504006.2801522.3154945.252

U - Safe uniform load in pounds/sq. ft.C - Safe concentrated load in pounds/ft. grating widthD - Deflection in inches

Loads and deflectionsgiven in this table aretheoretical, and are based on a unit stress of 18,000 psi.

328.7301148.584472.6081653.487643.5212250.417840.4562939.3651063.4063719.3241312.3654592.292

251.9531004.762362.7951446.635492.6811969.545643.5962571.477814.5303255.4241004.4764018.381

Bar Size,Inches

3/4 x 3/16

1 x 3/16

1-1/4 x 3/16

1-1/2 x 3/16

1-3/4 x 3/16

2 x 3/16

2-1/4 x 3/16

2-1/2 x 3/16

23800.711.4939

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Light Duty Steel Design CriteriaThe tables of safe loads which follow have been computed using the following design parameters:

U = Uniform Load - lbs/ft2

C = Concentrated Load - lbs/ft of grating width

S = Section Modulus - in3/ft of grating width

I = Moment of Inertia - in4/ft of grating width

L = Simple Clear Span - feet

D = Deflection - inches

E = Modulus of Elasticity (30,000,000 psi)

F = Allowable Bending Stress (18,000 psi)

M = Bending Moment

Light Duty Welded Steel (W Series)

GRATING TYPES - LIGHT DUTY WELDED STEEL W SERIES

HOW TO SPECIFY: 1. Grating: Light Duty Welded Steel W Series. 2. Bearing Bars: Rectangular Bar on 1-3/16" centers maximum. (Note: Other spacings may be specified at the discretion of the architect/ engineer.) 3. Cross Bars: Electroforge welded at right angles to bearing bars at 4" centers maximum. (Note: 2" cross bar centers may be specified at the discretion of the architect/engineer.) 4. Surface: Plain. (Note: A serrated surface may be specified for maximum skid resistance.) 5. Loading: Grating to carry a pedestrian loading equal to 100# per square foot over the required clear span with deflection not to exceed 1/4". (Note: Alternate loading requirements may be specified at the discretion of the architect/engineer.) 6. Finish: Galvanized or manufacturer’s standard black paint at the discretion of the architect/engineer. 7. Fabrication and Tolerances: In accordance with the NAAMM Metal Bar Grating Manual.

For those areas requiring the corrosion resistance of stainless steel, Direct Metals stocks 1" x 3/16", 1-1/4" x 3/16" and1-1/2" x 3/16" 19-W-4 Type 304 stainless steel electroforge welded grating. Since the welding process discolors the stain-less surface, this grating is best suited for industrial applications only and should not be specified where cosmetic appearance is important.

Serrated Surface

BAR GRATING


800.711.4939

BAR GRATING

Light Duty Welded Steel

0.316

0.158

1 x 3/16 57 7.04

0.329

0.206

0.493

0.308

61 5.961 - 1/4 x 1/8

1 - 1/4 x 3/16

0.474

1.599

1.974

1.263

0.967

0.711

0.355

1.798

2.467

1.263

0.846

0.533

67

70 7.041 - 1/2 x 1/8

77 10.251 - 1/2 x 3/16

87 11.871 - 3/4 x 3/16

96 13.482 x 3/16

105

113

15.08

16.70

2 - 1/4 x 3/16

2 - 1/2 x 3/16

8.64

0.105

3/4 x 3/16 46 5.43

0.178

0.067

51 4.881 x 1/80.211

UDCDUDCDUDCDUDCDUDCDUDCDUDCDUDCDUD CDUDCDUDCD

5330.099

5330.079

6320.075

6320.060

9470.074

9470.060

9870.060

9870.04814800.06014800.04814210.05014210.04021320.05021320.04029010.04329010.03437890.03737890.03047960.03347960.02659210.03059210.024

3410.155

4260.124

4040.116

5050.093

6060.116

7580.093

6320.093

7890.074

9470.09311840.074

9090.07811370.06213640.07817050.06218570.06723210.05324250.05830320.04730690.05238370.04137890.04747370.037

2370.224

3550.179

2810.168

4210.134

4210.168

6320.134

4390.134

6580.107

6580.134

9870.107

6320.112

9470.089

9470.11214210.08912890.09619340.07716840.08425260.06721320.07431970.06026320.06739470.054

1740.304

3050.244

2060.228

3610.183

3090.228

5410.182

3220.182

5640.146

4830.182

8460.146

4640.152

8120.122

6960.15212180.122

9470.13016580.10412370.11421650.09115660.10127410.08119330.09133830.073

1330.397

2660.317

1580.298

3160.239

2370.298

4740.239

2470.239

4930.191

3700.238

7400.191

3550.198

7110.159

5330.19910660.159

7250.17014510.136

9470.14918950.11911990.13223980.10614800.11929600.095

1250.378

2810.302

1870.377

4210.302

1950.302

4390.242

2920.301

6580.241

2810.252

6320.201

4210.251

9470.201

5730.21512890.172

7490.18916840.151

9470.16821320.13411700.15126320.121

1520.467

3790.372

1580.373

3950.298

2370.373

5920.298

2270.310

5680.248

3410.310

8530.248

4640.26611600.213

6060.23315160.186

7670.20719180.165

9470.18623680.149

1300.449

3590.361

1960.451

5380.360

1880.376

5170.300

2820.376

7750.301

3840.32210550.257

5010.28213780.225

6340.25017440.200

7830.22521530.180

1640.535

4930.429

1580.447

4740.358

2370.447

7110.358

3220.383

9670.306

4210.33512630.268

5330.29815990.238

6580.26819740.215

2020.525

6560.420

2750.450

8930.360

3590.39411660.315

4540.35014760.280

5610.31518220.252

2370.522

8290.417

3090.45610830.365

3920.40613700.324

4830.36516920.292

1810.680

7250.545

2370.596

9470.477

3000.53011990.424

3700.47714800.381

Bar Size,Inches

PedSpanInches

Wt.*Lbs.

Sq. Ft. 2'- 0" 2'- 6" 3'- 0" 3'- 6" 4'- 0" 4'- 6" 5'- 0" 5'- 6" 6'- 0" 6'- 6" 7'- 0" 8'- 0"

Sec. PropSx*, in3

Ix*, in4

U - Safe uniform load in pounds sq. ft.C - Safe concentrated load in pounds/ft. grating widthD - Deflection in inches

Loads and deflections given in this table are theoretical, and based on a unit stress of 18,000 psi.

Clear Span

*Based on 10.105 bars/ft. of grating width. Bearing bars 1-3/16" c.c. Add .6 lbs./sq. ft. for 19-SGCS-2. Note: Grating for spans to the left of the heavy line have a deflection less than 1/4" for uniform loads of 100 lbs./sq. ft. This is the maximum deflection to afford pedestrian comfort, and can be exceeded for other types of load at the discretion of the engineer. The actual “Ped (pedestrian) Span” under this condition is shown above for each size of grating. When serrated grating is specified, the depth of grating required for a specific load will be 1/4" greater than that shown in these tables. 3/4" x 3/16" serrated grating is NOT available.

25800.711.4939


Heavy Duty Welded Steel (W Series)

SLIP-NOT Grip Grate Safety Surface Available

Plain Surface Serrated Surface

Heavy duty welded grating ranges in size from 1-1/4" X 1/4" bearing bars through6" x 1/2" (7" bearing bars available byinquiry). Standard bearing bar spacings are 15/16", 13/16",1-3/8", 1-7/8" and 2-3/8"center-to-center. See pages 25 and 27 for standard cross bar design. Rectangular cross bars are also available. Standard cross bar spacings are 4" or 2"center-to-center.

HOW TO SPECIFY:

1. Grating: Heavy Duty Welded Steel W Series by Direct Metals or approved equal. 2. Bearing Bars: To be (size) rectangular bar spaced (as specified) inches center-to-center. (Note: Bearing bar size selection and spacing must be coordinated with the load and span conditions.)

3. Cross Bars: To be (size) spaced 4" center-to-center and welded at right angles to bearing bars with one fillet at each bearing bar/cross bar inter- section. (Note: 2" cross bar spacing may be specified for maximum lateral stability.) 4. Surface: Plain. (Note: A serrated surface may be specified for maximum skid resistance.) 5. Loading: Shall be specified by the architect/engineer in terms of uniform load/sq. ft., concentrated load/ft. of grating width or by AASHTO wheel load designation. Loading, bearing bar size, bearing bar spacing and span conditions must be coordinated. 6. Finish: Galvanized or manufacturer’s standard black paint at the discretion of the architect/engineer. 7. Fabrication and Tolerances: In accordance with the NAAMM Heavy Duty Metal Bar Grating Manual.

GRATING TYPESHEAVY DUTY WELDED STEEL W SERIES

For traffic areas running perpendicular to the span direction, supplementary bottom cross bars may be specified to provide added lateral stability and impact resistance.

BAR GRATING


800.711.4939

BAR GRATING

Heavy Duty Welded Steel 19-W-4/19-W-2

1 x 1/41 x 3/8

1 - 1/4 x 1/41 - 1/4 x 3/81 - 1/2 x 1/41 - 1/2 x 5/161 - 1/2 x 3/81 - 3/4 x 1/41 - 3/4 x 3/8

2 x 1/42 x 5/162 x 3/8

2 - 1/4 x 1/42 - 1/4 x 3/82 - 1/2 x 1/42 - 1/2 x 5/162 - 1/2 x 3/8

3 x 1/43 x 5/163 x 3/83 x 1/2

3 - 1/2 x 1/43 - 1/2 x 3/83 - 1/2 x 1/2

4 x 1/44 x 5/164 x 3/84 x 1/2

4 - 1/2 x 1/44 - 1/2 x 3/84 - 1/2 x 1/2

5 x 1/45 x 5/165 x 3/85 x 1/2

5 - 1/2 x 1/45 - 1/2 x 3/85 - 1/2 x 1/2

6 x 1/46 x 5/166 x 3/86 x 1/2

9.7114.0111.8717.2314.0117.2320.4616.1623.6718.3022.6026.8920.4630.1222.6027.9633.3428.3234.7641.2054.0932.6147.6562.6736.9145.5054.0971.2641.2060.5379.8545.5056.2466.9788.4449.7973.4297.0354.0966.9779.85

105.62

0.4210.6320.6580.9870.9471.1841.4211.2891.9341.6842.1052.5262.1323.1972.6323.2893.9473.7894.7375.6847.5795.1587.737

10.3166.7378.421

10.10513.473

8.52612.78917.05210.52613.15815.78921.05212.73719.10525.47315.15818.94722.73630.315

0.2110.3160.4110.6170.7110.8881.0661.1281.6921.6842.1052.5262.3983.5973.2894.1124.9345.6847.1058.526

11.3689.026

13.53918.05213.47316.84220.21026.94719.18428.77638.36726.31532.89439.47352.63035.02552.53870.05145.47356.84168.20990.945

79101413161917252228332841344250496067*78*6685*9685*95*96969696969696969696969696969696

688101011131217151821182622273130374457405875*51637591*6494*967896969694969696969696

799121113141418161922192622273130364355395672*50617288*6190967592969689969696969696

91112141416181721202326233127313635424961*456476*577080*92*7095*968596969696969696969696

Bar Size,Inches

Wt.**Lbs.

Sq. FtSx**, in3

Ft. Widthlx**, in4

Ft. Width

Section Properties Maximum Safe Clear Span, Inches-Partially Distributed Load

1 Ton 3 Ton 5 Ton H15/H20

BBSize

Thru2 - 1/2"

4"cc2"cc

72%65%

67%61%

62%56%

74%70%

69%65%

64%60%

54%51%

4"cc2"cc

3" to 6"

CBCtrs 1/4" 5/16" 3/8" 1/2"

Bearing Bar Thickness% Open Area*

*Span limited to 1/400 of span = Deflection. ** Based on 10.105 bars/ft of grating width. Bearing bars 1-3/16" c.c. When serrated grating is specified, the depth of grating required for a specific load will be 1/4" greater than that shown in these tables. Weights shown are for 4" cross bar centers. Add 1.13 lbs/sq. ft. (3/8" Dia.) or 2.55 lbs/sq. ft. (1" x 1/4") for 2" cross bar centers. Cross bars are determined based on project applications and bearing bar height.

27800.711.4939


BAR GRATING

Heavy Duty Welded Steel - 19 Space

1 x 1/41 x 3/8

1 - 1/4 x 1/41 - 1/4 x 3/81 - 1/2 x 1/4

1 - 1/2 x 5/161 - 1/2 x 3/81 - 3/4 x 1/41 - 3/4 x 3/8

2 x 1/42 x 5/162 x 3/8

2 - 1/4 x 1/42 - 1/4 x 3/82 - 1/2 x 1/4

2 - 1/2 x 5/162 - 1/2 x 3/8

3 x 1/43 x 5/163 x 3/83 x 1/2

3 - 1/2 x 1/43 - 1/2 x 3/83 - 1/2 x 1/2

4 x 1/44 x 5/164 x 3/84 x 1/2

4 - 1/2 x 1/44 - 1/2 x 3/84 - 1/2 x 1/2

5 x 1/45 x 5/165 x 3/85 x 1/2

5 - 1/2 x 1/45 - 1/2 x 3/85 - 1/2 x 1/2

6 x 1/46 x 5/166 x 3/86 x 1/2

Bar Size,Inches

Loads are theoretical, and are based on a unit stress of 20,000 psi.

1'- 0" 1'- 6" 2'- 0" 2'- 6" 3'- 0" 3'- 6" 4'- 0" 4'- 6" 5'- 0" 5'- 6" 6'- 0" 8'- 0"7'- 0"

BBSize

Thru2 - 1/2"

4"cc2"cc

72%65%

67%61%

62%56%

74%70%

69%65%

64%60%

54%51%

4"cc2"cc

3" to 6"

CBCtrs 1/4" 5/16" 3/8" 1/2"


Maximum Safe Concentrated Load*, Lbs. - Clear Span

28074213438765806313789394738593

128931122714033168401421321313175472192726313252603158037893505273438751580

18712809292443874209526263165729859674849356

112279476

1420911698146181754216840210532526233684229243438745849299423742744911598803789356840

140321072193329031573947473742976447561370178420

106578773

10963131571263015790189472526317193257903438722457280703368344910284204263056840350874386052630

1123168517552632252531573789343751574491561367365685852570198771

105251010412632151572021113755206322750917965224562694735928227363410445472280693508842104561393396550947

93614041462219321042631315828644298374246785613473871045849730987718420

1052712631168421146217193229241497118713224562994018947284203789323391292403508746782283044245656607336844210450524

802120412531880180422552707245536843208401048114061609050136265751872179023

10827144369825

1473719650128321604019248256631624024360324802005025063300744009924261363904852028872360904330757743

109716451578197323682148322328073508421035535328438754826578631578959473

126328597

1289517193112281403516842224551421021315284201754321930263153508721228318424245525263315783789350525

1403175421051910286524953119374231594736389948735847561370188421

112287641

11462152839981

1247614970199601263118947252621559419493233913118818870283043773822456280703368344911

1719257922452807336828434263350943855263505263167579

101056877

10316137558983

1122813473179641136817052227361403517544210522806916983254733396420211252633031540420

25843875319039874784459357426890918762529378

125048166

1020712248163311033515502206691275915949191382551815439231583087618373229662755936745

292436544386421052636316842157318597

1146274869357

11228149709473

14210189471169614620175432339114152212282830316842210522526233683

491273699825641680209624

128318120

12180162401002512531150372005012130181952426014436180452165328871

710510658142108772

10965131581754310614159212122812632157891894725263

*Based on 10.105 bars / ft. of grating width. Bearing bars 1-1/16" c.c. Note: When serrated grating is specified, the depth of grating required for a specificload will be 1/4" greater than that shown in these tables

19-W-4 & 19-W-2 Panel Width Chart (in.) Dimensions Are Out-to-Out of Bearing Bars** No. of Bars 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1/4" Bars 1-7/16 2-5/8 3-13/16 5 6-3/16 7-3/8 8-9/16 9-3/4 10-15/16 12-1/8 13-5/16 14-1/2 15-11/16 16-7/8 18-1/16 5/16" Bars 1-1/2 2-11/16 3-7/8 5-1/16 6-1/4 7-7/16 8-5/8 9-13/16 11 12-3/16 13-3/8 14-9/16 15-3/4 16-15/16 18-1/8 3/8" Bars 1-9/16 2-3/4 3-15/16 5-1/8 6-5/16 7-1/2 8-11/16 9-7/8 11-1/16 12-1/4 13-7/16 14-5/8 15-13/16 17 18-3/16 1/2" Bars 1-11/16 2-7/8 4-1/16 5-1/4 6-7/16 7-5/8 8-13/16 10 11-3/16 12-3/8 13-9/16 14-3/4 15-15/16 17-1/8 18-5/16

No. of Bars 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1/4" Bars 19-1/4 20-7/16 21-5/8 22-13/16 24 25-3/16 26-3/8 27-9/16 28-3/4 29-15/16 31-1/8 32-5/16 33-1/2 34-11/16 35-7/8 5/16" Bars 19-5/16 20-1/2 21-11/16 22-7/8 24-1/16 25-1/4 26-7/16 27-5/8 28-13/16 30 31-3/16 32-3/8 33-9/16 34-3/4 35-15/16 3/8" Bars 19-3/8 20-9/16 21-3/4 22-15/16 24-1/8 25-5/16 26-1/2 27-11/16 28-7/8 30-1/16 31-1/4 32-7/16 33-5/8 34-13/16 36 1/2" Bars 19-1/2 20-11/16 21-7/8 23-1/16 24-1/4 25-7/16 26-5/8 27-13/16 29 30-3/16 31-3/8 32-9/16 33-3/4 34-15/16 36-1/8


800.711.4939

BAR GRATING

Heavy Duty Welded Steel 22-W-4/22-W-2

1 x 1/41 x 3/8

1 - 1/4 x 1/41 - 1/4 x 3/81 - 1/2 x 1/41 - 1/2 x 5/161 - 1/2 x 3/81 - 3/4 x 1/41 - 3/4 x 3/8

2 x 1/42 x 5/162 x 3/8

2 - 1/4 x 1/42 - 1/4 x 3/82 - 1/2 x 1/42 - 1/2 x 5/162 - 1/2 x 3/8

3 x 1/43 x 5/163 x 3/83 x 1/2

3 - 1/2 x 1/43 - 1/2 x 3/83 - 1/2 x 1/2

4 x 1/44 x 5/164 x 3/84 x 1/2

4 - 1/2 x 1/44 - 1/2 x 3/84 - 1/2 x 1/2

5 x 1/45 x 5/165 x 3/85 x 1/2

5 - 1/2 x 1/45 - 1/2 x 3/85 - 1/2 x 1/2

6 x 1/46 x 5/166 x 3/86 x 1/2

8.5412.2510.4015.0412.2515.0417.8214.1120.5915.9619.6723.3817.8226.1619.6724.3028.9524.8030.3735.9347.0628.5141.5054.4832.2239.6447.0661.8935.9352.6369.3139.6448.9258.1876.7343.3563.7584.1547.0658.1869.3191.57

0.3640.5450.5680.8520.8181.0231.2271.1141.6701.4551.8182.1821.8412.7612.2732.8413.4093.2734.0914.9096.5454.4546.6828.9095.8187.2738.727

11.6367.363

11.04514.727

9.09111.36313.63618.18111.00016.49921.99913.09116.36319.63626.181

0.1820.2730.3550.5330.6140.7670.9200.9741.4621.4551.8182.1822.0713.1062.8413.5514.2614.9096.1367.3639.8187.795

11.69315.59011.63614.54517.45423.27216.56824.85133.13522.72728.40834.09045.45330.24945.37460.49839.27249.08958.90778.543

6991312151816232125302638313946455564*74*6081*94*7891*96969696969696969696969696969696

677991112111514171917242024282733405236536946576886*5885967188969685969696969696

79911111213131615172018242024282733385035506645546483*5580966782969680969694969696

91111131315161520182124212824293332384457*415871*51627387*6389*967692969690969696969696

Bar Size,Inches

Wt.**Lbs.

Sq. FtSx**, in3

Ft. Widthlx**, in4

Ft. Width

Section Properties Maximum Safe Clear Span, Inches-Partially Distributed Load

1 Ton 3 Ton 5 Ton H15/H20

BBSize

Thru2 - 1/2"

4"cc2"cc

75%68%

70%64%

66%60%

77%72%

72%68%

68%64%

60%56%

4"cc2"cc

3" to 6"

CBCtrs 1/4" 5/16" 3/8" 1/2"


*Span limited to 1/400 of span = Deflection. ** Based on 8.727 bars/ft of grating width. Bearing bars 1-3/8" c.c. When serrated grating is specified, the depth of grating required for a specific load will be 1/4" greater than that shown in these tables. Weights shown are for 4" cross bar centers. Add 1.13 lbs/sq. ft. (3/8" Dia.) or 2.55 lbs/sq. ft. (1" x 1/4") for 2" cross bar centers. Cross bars aredetermined based on project applications and bearing bar height.

29800.711.4939


BAR GRATING

Heavy Duty Welded Steel - 22 Space

24273633378756805453682081807427

111339700

1212014547122731840715153189402272721820272733272743633296934454759393387874848758180

1 x 1/41 x 3/8

1 - 1/4 x 1/41 - 1/4 x 3/81 - 1/2 x 1/4

1 - 1/2 x 5/161 - 1/2 x 3/81 - 3/4 x 1/41 - 3/4 x 3/8

2 x 1/42 x 5/162 x 3/8

2 - 1/4 x 1/42 - 1/4 x 3/82 - 1/2 x 1/4

2 - 1/2 x 5/162 - 1/2 x 3/8

3 x 1/43 x 5/163 x 3/83 x 1/2

3 - 1/2 x 1/43 - 1/2 x 3/83 - 1/2 x 1/2

4 x 1/44 x 5/164 x 3/84 x 1/2

4 - 1/2 x 1/44 - 1/2 x 3/84 - 1/2 x 1/2

5 x 1/45 x 5/165 x 3/85 x 1/2

5 - 1/2 x 1/45 - 1/2 x 3/85 - 1/2 x 1/2

6 x 1/46 x 5/166 x 3/86 x 1/2

1618242225243787363645475453495174226467808096988182

1227110102126271515114547181822181829089197962969839596258583232438787517163272449089

1213181718932840272734104090371355674850606072736137920375779470

113631091013637163632181714847222732969719393242432909038787245433681749090303033787745453

97114531515227221812728327229714453388048485819490973636061757690918728

1090913091174531187717819237571551519395232723102919635294533927224243303013636348483293334399758664349094363552363

809121112621893181822732727247637113233404048494091613650516313757672739091

10909145449898

1484919798129291616219393258581636224544327272020225251303024040224444366644888729091363624363658180

6931038108216231558194923372122318127713463415635075259433054116493623477929350

124678484

1272816970110821385316623221641402521038280511731621644259733463020952314274190324935311683740249869

94714201363170520451857278324253030363730684602378847355682545568188182

109087423

11137148489697

1212214545193931227218404245451515218938227273030218333274983666521818272723272743635

1212151618181650247421562693323327274090336742095050484960617273969665999899

131998619

1077512929172391090816363218181346816834202012693516296244433259119394242412909038787

1485222719402424290924553681303137884545436454556545872759398909

1187977579697

11636155159817

14727196361212115151181812424114667219992933217455218172618134908

22323347275534444132396749595950793353998099

1079970528816

10578141048925

13388178511101913773165282203813333199992666515868198342380131735

2526315737883637454654547272494974249899646480819697

129298181

12272163631010112626151512020112222183322444314546181812181829090

424263648485554169278311

110827012

10519140268658

10822129871731510476157132095112468155841870124934

61369204

1227375769469

11363151519167

137491833310909136361636321818

Bar Size,Inches

Maximum Safe Concentrated Load*, Lbs. - Clear Span

Loads are theoretical, and are based on a unit stress of 20,000 psi.

1'- 0" 1'- 6" 2'- 0" 2'- 6" 3'- 0" 3'- 6" 4'- 0" 4'- 6" 5'- 0" 5'- 6" 6'- 0" 8'- 0"7'- 0"

BBSize

Thru2 - 1/2"

4"cc2"cc

75%68%

70%64%

66%60%

77%72%

72%68%

68%64%

60%56%

4"cc2"cc

3" to 6"

CBCtrs 1/4" 5/16" 3/8" 1/2"


* Based on 8.727 bars/ft of grating width. Bearing bars 1-3/8" c.c. Note: When serrated grating is specified, the depth of grating required for a specific load will be 1/4" greater than that shown in these tables.


800.711.4939

BAR GRATING

Stair Treads

STANDARD TREAD WIDTHS AND END PLATE DIMENSIONS

*Table of widths based on 3/16" thick bearing bars and standard bar spacing 1-3/16" cc (1-1/8" face-to-face for riveted grating.)

SUGGESTED BEARING BAR SIZES*

*Maximum tread length based on 400-lb. concentrated load on nosing and 4 bearing bars at center of tread length. NOTE: Since a serrated connecting bar does not reduce the strength of the grating, R and AR series treads may always be selected from the “Plain” column.

NOTE: DIM, B = 2-1/4"for ALL aluminum treads.

NOTE: Refer to drawings above for A and B dimensions 5 6-3/16 6-1/4 6-11/16 6-3/8 2-1/2 1-3/4 2-1/4

6 7-3/8 7-7/16 8 7-1/4 4-1/2 1-3/4 2-1/4 7 8-9/16 8-5/8 9-5/16 8-3/4 4-1/2 1-3/4 2-1/4

8 9-3/4 9-13/16 10-5/8 9-15/16 7 1-3/4 2-1/4

9 10-15/16 11 11-15/16 11-1/8 7 1-3/4 2-1/4

10 12-1/8 12-3/16 13-1/4 12-3/8 7 1-3/4 2-1/4

W, SG, SGF SGI R, AR Plank Dimension 1 1-1/2 Series Series Series Series A 1-1/4 1-3/4

Dimension BEnd Plate Dimensions

Aluminum Treads

Width (includes nosing*) Number of Bearing Bars

1" x 3/16" 2'-4" 2'-2" 1" I-Bar / Plank 2'-6" 3/4" x 3/16" 2'-4" 1'-11" 1-1/4" x 3/16" 2'-10" 2'-7" 1-1/4" I-Bar / Plank 3'-0" 1" x 3/16" 3'-5" 2'-10" 1-1/2" x 3/16" 3'-6" 3'-2" 1-1/2" I-Bar / Plank 3'-6" 1-1/4" x 3/16" 4'-8" 4'-2" 1-3/4" x 3/16" 4'-3" 3'-10" 1-3/4" I-Bar / Plank 4'-5" 1-1/2" x 3/16" 5'-6" 5'-3"

Steel Treads

Max. Tread Length*

PlainW, R

SeriesSGI Series

Plank SeriesMaximum Tread

Length*SGF, SG, AR

Series SerratedMax. Tread Length*Plain Serrated

STAIR TREAD DETAILS

31800.711.4939


BAR GRATING

Anchoring DevicesSADDLE CLIPA special bent-clip type fastener for removable bar grating panels available in aluminum, stainless steel, and galvanized steel. Clips only are supplied by the grating manufacturer. Other fasteningaccessories to be provided byothers. (Note: Cross bars may need to be snipped in the field to facili-tate placement of saddle clips.)

ANCHOR BLOCKAnchor blocks of 1/4" or 3/16" thick aluminum, or steel may be shop welded by the gratingmanufacturer and used to fasten permanent or removable grating panels. Anchor blocks arerecessed thus offering a trip-free surface.

PLANK CLIPA special friction fastener used in conjunction with plank grating and embedded grating frames. When plank is banded, clips are installed by the manufacturer.

COUNTERSUNK LANDFor close-mesh aluminum grating (7/16" bearing bar cen-ters) a countersunk land may be drilled by the grating manufac-turer for use with a 1/4" diameter TEK screw by others.

GRATING CLAMPA special friction fastener available in aluminum, stainless steel, and galvanized steel used in conjunction with bar grating and embedded grating frames. (Note: Cross bars may need to be snipped in the field to facilitate placement of grating clamps.)

Z CLIPThe most versatile clip anchor available is the Z Clip. These clips are especially helpful in holding down riveted grating. Z Clips are manufactured from stainless steel, and are available in 1" (1" and1-1/4" grating) 1-1/2" (1-1/2" and 1-3/4" grating) and 2" (2", 2-1/4" and 2-1/2" grating) with a pre-punched hole to accept a 1/4" bolt or TEK screw by others.

PLANK LUGA plank lug inserted and tack welded between flanges can serve as an anchor block for plank grating. TEK screw fastener by others.

TACK WELDA positive method for anchoring all permanently installed grating.

EXAMPLES OF FABRICATIONS

titeweld 7-tw-4 welded steel

Documents