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SteelGrating.3MountviewPlace,Christchurch,NewZealand.Email:steelgrating@xtra.co.nzWeb:www.steelgrating.co.nz

STEEL GRATING SERIES 1: (30MM CENTRES)

Weprovidegratinginbothtwistlockand

forge-weldedinmildsteelandtwistlock

inaluminium.OurSeries1gratinghashigh

loadcarryingcapacityandisavailableinthe

followingoptions:

Note:Twistlockgratingisavailableinbothaluminiumandmildsteelserratedgrating.

Theyareavailableinallsizes.

AtSteelGratingLimited,90%ofourworkisForgeBarstylegrating-themostcommonformof

grating.Westockhighlevelsofthisgratingtoensurewecansupplyasquicklyaspossible.

Twistlockjobsaremadetoorder.

1.

LoadBarsat30mmCentres

ForgeWelded(MildSteel) Twistlock(MildSteel) Twistlock(Aluminium)

20x3 20x3 20x3

20x5 20x5 20x5

25x3 25x3 25x3

25x5 25x5 25x5

32x3 32x3 32x3

32x5 32x5 32x5

40x5 40x3 40x3

45x5 40x5 40x5

50x5 50x3 50x3

65x5 50x5 50x5

25x5serrated

32x5serrated

40x5serrated

100mmCrossBarPitch

Main Barsmm

Masskg/sqm

SelfWtkPa

(1) 600 900 1200 1500 1800 2100 2400

Spanfor

5mm def@4kPa

20x3 19.47 9.191 UD

CD

25.23 3.09

7.572.47

11.116.88

5.005.50

CHECKDEFLECTIONFORLOADS&SPANSTHISSIDEOFSHADOWLINE

1073

20x5 29.93 0.294 UD

CD

42.083.09

12.622.47

18.546.89

8.345.51

10.3012.09

6.189.67

Series130 mm

BarCentres

1219

25x3 23.39 0.229 UD

CD

39.492.47

11.851.98

17.425.52

7.844.42

9.709.72

5.827.77

1268

25x5 36.48 0.358 UD

CD

65.852.47

19.751.98

29.075.43

13.084.42

16.090.73

9.737.79

1441

32x3 28.89 0.283 UD

CD

64.801.93

19.441.55

28.644.33

12.893.46

15.997.64

9.596.11

10.1311.81

7.609.45

1526

32x5 45.63 0.448 UD

CD

108.021.93

32.411.5

47.764.33

21.493.46

26.677.64

16.006.11

16.9111.83

12.689.46

1734

40x3 35.17 0.345 UD

CD

101.341.55

30.401.24

44.853.47

20.182.78

25.086.13

15.054.91

15.939.51

11.947.61

1804

40x5 56.10 0.550 UD

CD

168.931.55

50.681.24

74.773.47

33.652.78

41.826.14

25.094.91

26.579.52

19.937.61

18.2813.58

16.4510.86

2050

45x5 62.64 0.615 UD

CD

213.891.38

64.171.10

94.723.09

42.622.47

53.015.46

31.814.37

33.718.48

25.286.78

23.2212.11

20.909.69

16.9016.33

17.7413.06

2239

50x5 69.18 0.679 UD

CD

264.141.24

79.240.99

117.022.78

52.662.33

65.534.92

39.323.94

41.697.65

31.276.12

28.7510.93

25.878.75

20.9414.75

21.9911.80

15.8719.08

19.0515.26

2424

65x5 88.81 0.871 UD

CD

446.67.95

34.000.76

198.032.14

89.121.71

111.013.80

66.613.04

70.735.91

53.054.72

48.868.46

43.976.77

35.6611.44

37.459.15

27.1014.83

32.5211.86

2951

STEEL GRATING TWISTLOCK AND FORGE WELDED STEEL GRATING

Safe Loads and Deflections for Load Bars

U:SafeSuperimposedUniformlyDistributedLoad–kPa

C:SafeSuperimposedLineLoad–kN/m

D:DeflectionduetoSuperimposedLoad-mmT

SteelGrating.3MountviewPlace,Christchurch,NewZealand.Email:steelgrating@xtra.co.nzWeb:www.steelgrating.co.nz

STEEL GRATING TWISTLOCK ALUMINIUM GRATING

30mm Bar Centres

TABLE1a–SafeLoadsandDefectionsforLoadBars@BasedonaYieldStressof:

172MPaandDesignStressof:Noofbars34per115.24MPamet

U:SafeSuperimposedUniformlyDistributedLoad–kPa

C:SafeSuperimposedLineLoad–kN/m

D:DeflectionduetoSuperimposedLoad-mmT

MainBarsmm

Masskg/sqm

SelfWtkPa

(1) 150 300 450 600 750 900 1050 1200 1500 1800

Spanfor

5mm def@4kPa

20x3 6.804 0.066747 UD

278.560.39

69.591.55

30.893.48

17.356.18

11.089.64

817.06

CD

20.890.31

10.441.24

6.952.79

5.204.95

4.157.71

20x5 10.476 0.10277 UD

464.270.39

115.991.55

51.493.48

28.926.18

18.479.64

12.8013.85

928.36

CD

34.820.31

17.401.24

11.592.79

8.684.95

6.937.71

5.7611.08

25x3 8.181 0.080256 UD

435.270.31

108.761.24

48.292.79

27.134.95

17.337.72

12.0111.10

965.91

32.650.25

16.310.99

10.872.23

8.143.96

6.506.18

5.418.88

25x5 12.771 0.125284 725.460.31

181.271.24

80.502.79

45.224.95

28.907.72

20.0311.10

14.6815.08

1097.49

54.410.25

27.190.99

18.112.23

13.573.96

10.846.18

9.018.88

7.7112.06

32x3 10.1088 0.099167 713.180.24

178.220.97

79.152.18

44.483.87

28.436.04

19.718.68

14.4611.80

1162.37

53.490.19

26.730.78

17.811.74

13.343.10

10.664.83

8.876.95

7.599.44

32x5 15.984 0.156803 1188.640.24

297.040.97

131.932.18

74.143.87

47.406.04

32.878.69

24.1011.80

18.4215.38

1320.71

89.150.19

44.560.78

29.681.74

22.243.10

17.774.83

14.796.95

12.659.44

11.0512.31

40x3 12.312 0.120781 1114.380.19

278.500.78

123.711.74

69.543.10

44.864.84

30.846.95

22.629.45

17.2912.33

1374.13

83.580.16

41.780.62

27.841.39

20.862.48

16.673.87

13.885.56

11.887.56

10.389.86

40x5 19.656 0.192825 1857.310.19

464.180.78

206.201.74

115.903.10

74.114.84

51.406.96

37.729.45

28.8312.33

18.3819.19

1561.31

139.300.16

69.630.62

46.391.39

34.772.48

27.793.87

23.135.56

19.807.56

17.309.86

13.7915.35

45x5 21.951 0.215339 2350.680.17

587.510.69

261.001.55

146.722.75

93.824.30

65.096.19

47.768.41

36.5210.97

23.2917.08

1705.51

176.300.14

88.130.55

58.721.24

44.012.20

35.183.44

29.294.95

25.086.73

21.918.77

17.4713.66

50x5 24.246 0.237853 2902.100.16

725.350.62

322.241.40

181.162.48

115.863.87

80.385.57

58.997.57

45.119.88

28.7915.39

19.9222.08

1845.75

217.660.12

108.800.50

72.511.12

54.351.98

43.453.10

36.174.45

30.976.06

27.077.90

21.5912.31

17.9317.66

STEEL GRATING SERIES 1

STEEL GRATING TYPICAL APPLICATION LOADINGS

MaximumSpan(mm)forvariousLoadsWith5.00mmDeflections

2.5KPa 4.0KPa 5.0KPa 7.5KPa

20x3 1185 1050 1005 900

20x5 1350 1205 1150 1035

25x3 1425 1260 1190 1055

25x5 1605 1430 1345 1220

32x3 1735 1611 1435 1301

32x5 1935 1715 1625 1475

40x5 2285 2030 1931 1741

45x5 2445 2220 2095 1900

50x5 2695 2395 2275 2055

65x5 3250 2925 2765 2600

ConveyorWalkwaysLightAccessPlatforms

2.5KPa

StandardAustralianPlatformLoading

4KPa

BritishStandardPlatformLoading

5KPa

BoilerHousePlatformLoadingespPowerStation

7.5KPa

STEEL GRATING DRAIN COVERS FOR HEAVY TRAFFIC RECOMMENDED VEHICLE LOADING CHARTS FOR SERIES 1 GRATING

SteelGrating’sdraincoversandsumpshave

alargeamountofopenareatoallowliquid

todrainthroughwhilestillprovidingstrength

tosupportheavyloads.Oursumpsanddrain

coverscanbemadeoutofanysizegratingwe

stock,andwecanmakethemtoanysizeor

shapeyourequest.Thefollowingtableisour

recommendationonthesizeofgratingneeded

fordifferentvehicleloadingsandspans.

SteelGrating.3MountviewPlace,Christchurch,NewZealand.Email:steelgrating@xtra.co.nzWeb:www.steelgrating.co.nz

STEEL GRATING CARS UP TO 2.5 TONNE

Span T W R D

210 205/1 175 25 25

310 255/1 265 30 30

410 305/1 345 40 40

510 305/1 445 40 40

610 405/1 525 50 50

710 405/1 625 50 50

810 505/1 725 60 60

910 505/1 805 60 60

1010 505/1 905 60 60

STEEL GRATING TRUCKS 2.5 TONNE AND OVER

STEEL GRATING FORKLIFTS WITH 5 TONNE CAPACITY

Span T W R D

210 205/1 175 25 25

310 305/1 245 40 40

410 405/1 325 50 50

510 405/1 425 50 50

610 505/1 525 60 60

710 505/1 605 60 60

810 655/1 705 75 75

910 655/1 825 75 75

Span T W R D

210 255/1 165 30 30

310 405/1 265 50 50

410 505/1 325 50 60

510 505/1 405 60 60

610 655/1 505 50 75

710 655/1 625 50 75

810 655/1 725 50 75

Key:

T =Typeofgrating

W=Widthofdrainageopening

R =Widthofrebate

D=Depthofrebate

(Includes5mmMSA)

5mmgapbetweengratingandrebate

D

R RW

TD