Technology

Welded Steel Grating with the Feature of Great Load Capacity

Evenly distributed load of steel grating floor.
Fv - Uniformly distributed load.
Pointed load of steel grating floor.
Fp is the concentrated load of the steel grating.

Precautions

  • Fp means unit load in kN.
  • Fv means a uniformly distributed cargo of kN/m2.
  • The different color figures in the table show different meanings.
    • Black means used for pedestrian sections.
    • Orange means not used for pedestrian section.
    • Green means that the steel grating floors can withstand 3 tons of load-bearing trucks.
    • Red means that the steel grating floor can withstand 9 tons of load-bearing trucks.
  • Distance between supports (Refers to the distance between the steel supports, excluding the center of the support to the center of the other.)
  • The conversion factor from kg to kN: 10 kN = 1 ton, 1 kN = 100 kg.

All the values in the table are presented with the spacing of the bearing bars of 34.3 mm. Please check the allowable load of producers when using the deck of the different bearing bar pitches or contact us.

Table 1: Bearing Capacity of Steel Grating Bearing Bar ( from 25 to 50 ×2, 25 to 70 × 3 mm )
Distance between supports (mm) 25 × 2 30 × 2 35 × 2 40 × 2 50 × 2 25 × 3 30 × 3 35 × 3 40 × 3 50 × 3 60 × 3 70 × 3
Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv
300 5.35 86.37 7.64 124.37 10.31 169.29 13.36 221.11 20.56 345.48 8.02 129.56 11.46 186.56 15.46 253.93 20.04 331.66 30.84 518.22 43,66 746.24 58.49 1015.72
400 3.56 48.58 5.09 69.96 6.87 95.22 8.91 124.37 13.71 194.33 5.35 72.88 7.64 104.94 10.31 142.84 13.36 186.56 20.56 291.50 29.11 419.76 38,99 571.34
500 2.67 31.09 3.82 44.77 5.15 60.94 6.68 79.60 10.28 124.37 4.01 46.64 5.73 67.16 7.73 91.41 10.02 119.40 15.42 186.56 21.83 268.65 29,24 365.66
600 2.14 21.59 3.06 31.09 4.12 42.32 5.35 55.28 8.22 86.37 3.21 32.39 4.58 46.64 6.19 63.48 8.02 82.92 12.34 129.56 17.46 186.56 23.39 253.93
700 1.78 15.86 2.55 22.84 3.44 31.09 4.45 40.61 6.85 63.46 2.67 23.80 3.82 34.27 5.15 46.64 6.68 60.92 10.28 95.18 14.55 137.06 19.50 186.56
800 1.53 11.96 2.18 17.49 2.95 23.81 3.82 31.09 5.87 48.58 2.29 17.93 3.27 26.24 4.42 35.71 5.73 46.64 8.81 72.88 12.47 104.94 16.71 142.84
900 1.33 8.40 1.91 13.82 2.58 18.81 3.34 24.57 5.14 38.39 2.00 12.60 2.87 20.73 3.87 28.21 5.01 36.85 7.71 57.58 10.92 82.92 14.62 112.86
1000 1.07 6.12 1.70 10.58 2.29 15.24 2.97 19,90 4.57 31.09 1.61 9.18 2.55 15,87 3.44 22.85 4.45 29.85 6.85 46.64 9.70 67.16 13,00 91.41
1100 0.88 4.60 1.52 7.95 2.06 12.59 2.67 16.45 4.11 25.70 1.33 6.90 2.27 11.92 3.09 18.89 4.01 24.67 6.17 38,55 8.73 55.51 11.70 75.55
1200 0.74 3.54 1.27 6.12 1.87 9.72 2.43 13.82 3.74 21.59 1.11 5.31 1.91 9.18 2.81 14.58 3.64 20.73 5.61 32.39 7.94 46.64 10.63 63.48
1300 0.63 2.79 1.08 4.81 1.70 7.65 2.23 11.41 3.43 18,40 0.95 4.18 1.62 7.22 2.55 11.47 3.34 17.12 5.14 27,60 7.28 39.74 9.75 54.09
1400 0.54 2.23 0.93 3.85 1.46 6.12 2.06 9.14 3.16 15.86 0.81 3.35 1.40 5.78 2.20 9.18 3.08 13.71 4.74 23.80 6.72 34.27 9.00 46.64
1500 0.47 1.81 0.81 3.13 1.27 4.98 1.89 7.43 2.94 13.82 0.71 2.72 1.21 4.70 1.91 7.47 2.83 11.14 4.41 20.73 6.24 29.85 8.36 40.63
1600 0.41 1.49 0.71 2.58 1.12 4.10 1.66 6.12 2.74 11.96 0.62 2.24 1.07 3.87 1.68 6.15 2.49 9.18 4.11 17.93 5.82 26.24 7.80 35.71
1700 0.37 1.25 0.63 2.15 0.99 3.42 1.47 5.10 2.57 9.97 0.55 1.87 0.94 3.23 1.48 5.13 2.20 7.66 3.86 14.95 5.46 23.24 7.31 31.63
1800 0.33 1.05 0.56 1.81 0.88 2.88 1.31 4.30 2.42 8.40 0.49 1.57 0.84 2.72 1.32 4.32 1.96 6.45 3.63 12.60 5.14 20.73 6.88 28.21
1900 0.29 0.89 0.50 1.54 0.79 2.45 1.17 3.66 2.25 7.14 0.44 1.34 0.75 2.31 1.19 3.67 1.76 5.48 3.38 10.71 4.85 18.51 6.50 25.32
2000 0.26 0.77 0.45 1.32 0.71 2.10 1.06 3.13 2.03 6.12 0.40 1.15 0.68 1.98 1.07 3.15 1.59 4.70 3.05 9.18 4.60 15,87 6.16 22.85
Table 2: Bearing Capacity of Steel Grating Bearing Bar ( From 30 to 70 ×4, 30 to 70 × 5 mm )
Distance between supports*
(mm)
30 × 4 35 × 4 40 × 4 45 × 4 50 × 4 60 × 4 70 × 4 30 × 5 35 × 5 40 × 5 50 × 5 60 × 5 70 × 5
Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv Fp Fv
300 15.28 248.75 20.62 338.57 26.73 442.22 33.57 559.68 41.12 690.96 58.21 994.99 77.98 1354.29 19.10 310.93 25.77 423.21 33.41 552.77 51.40 863.70 72.77 1243.73 97.48 1692.86
400 10.19 139.92 13.75 190.45 17.82 248.75 22.38 314.82 27.41 388.67 38.81 559.68 51.99 761.79 12.74 174.90 17.18 238.06 22.27 310.93 34.27 485.83 48.51 699.60 64.98 952.23
500 7.64 89.55 10.31 121.89 13.36 159.20 16.78 201.48 20.56 248.75 29.11 358.20 38.99 487.54 9.55 111.94 12.89 152.36 16.70 199.00 25.70 310.93 36.38 447.74 48.74 609.43
600 6.11 62.19 8.25 84.64 10.69 110.55 13.43 139.92 16.45 248.75 23.29 248.75 31.19 338.57 7.64 77.73 10.31 105.80 13.36 138.19 20.56 215.93 29.11 310.93 38.99 423.21
700 5.09 45.69 6.87 62.19 8.91 81.22 11.19 102.80 13.71 126.91 19.40 182.75 25.99 248.75 6.37 57.11 8.59 77.73 11.14 101.53 17.13 158.64 24.26 228.44 32.49 310.93
800 4.37 34.98 5.89 47.61 7.64 62.19 9.59 78.71 11.75 97.17 16.63 139.92 22.28 190.45 5.46 43.73 7.36 59.51 9.55 77.73 14.69 121.46 20.79 174.90 27.85 238.06
900 3.82 27.64 5.15 37.62 6.68 49.14 8.39 62.19 10.28 76.77 14.55 110.55 19.50 150.48 4.78 34.55 6.44 47.02 8.35 61.42 12.85 95.97 18.19 138.19 24.37 188.10
1000 3.40 21.16 4.58 30.47 5.94 39.80 7.46 50.37 9.14 62.19 12.94 89.55 17.33 121.89 4.25 26.44 5.73 38.09 7.42 49.75 11.42 77.73 16.17 111.94 21.66 152.36
1100 3.03 15.89 4.12 25.18 5.35 32.89 6.71 41.63 8.22 51.39 11.64 74.01 15.60 100.73 3.79 19.87 5.15 31.48 6.68 41.12 10.28 64.24 14.55 92.51 19.50 125.92
1200 2.54 12.24 3.75 19.44 4.86 27.64 6.10 34.98 7.48 43.19 10.58 62.19 14.18 84.64 3.18 15.30 4.69 24.30 6.07 34.55 9.35 53.98 13.23 77.73 17.72 105.80
1300 2.16 9.63 3.40 15.29 4.45 22.83 5.59 29.81 6.85 36.80 9.70 52.99 13.00 72.12 2.70 12.04 4.25 19.11 5.57 28.53 8.57 46.00 12.13 66.23 16.25 90.15
1400 1.86 7.71 2.93 12.24 4.11 18.28 5.16 25.70 6.33 31.73 8.96 45.69 12.00 62.19 2.33 9.64 3.66 15.30 5.14 22.84 7.91 39.66 11.20 57.11 15.00 77.73
1500 1.62 6.27 2.55 9.95 3.77 14.86 4.80 21.16 5.87 27.64 8.32 39.80 11.14 54.17 2.02 7.84 3.18 12.44 4.72 18.57 7.34 34.55 10.40 49.75 13.93 67.71
1600 1.42 5.17 2.24 8.20 3.31 12.24 4.48 17.43 5.48 23.91 7.76 34.98 10.40 47.61 1.78 6.46 2.80 10.25 4.14 15.30 6.85 29.89 9.70 43.73 13.00 59.51
1700 1.26 4.31 1.98 6.84 2.93 10.21 4.14 14.53 5.14 19.94 7.28 30.99 9.75 42.18 1.57 5.38 2.47 8.55 3.67 12.76 6.43 24.92 9.10 38.73 12.18 52.72
1800 1.12 3.63 1.76 5.76 2.61 8.60 3.69 12.24 4.84 16.79 6.85 27.64 9.17 37.62 1.40 4.53 2.21 7.20 3.27 12.76 6.05 20.99 8.56 34.55 11.47 47.02
1900 1.01 3.08 1.58 4.90 2.34 7.31 3.31 10.41 4.51 14.28 6.47 24.68 8.66 33.76 1.26 3.86 1.98 6.12 2.93 9.14 5.64 17.85 8.09 30.84 10.83 42.20
2000 0.91 2.64 1.43 4.20 2.12 6.27 2.99 8.93 4.07 12.24 6.13 21.16 8.21 30.47 1.13 3.31 1.78 5.25 2.64 7.84 5.08 15.30 7.66 26.44 10.26 38.09
Table 3: Mesh Size of Steel Grating
34.3×19 mm 34.3×50.8 mm
34.3×24 mm
Bearing loads are indicated in the table
34.3×76.2 mm
Bearing loads indicated in the table minus 10%
34.3×38.1 mm 34.3×101.6 mm
Table 4: Bearing Capacity of Serrated Steel Grating
Bearing Bar Height Change range
25 mm -10%
30 mm -8%
40 mm -6.3%
60 mm -4.2%

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