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Steel Grating Load Table, Support Span and Bar Size: RFQ Details Buyers Should Confirm

Steel platform grating reviewed for load table support span and bar size RFQ details

Steel grating load table RFQs should confirm support span, bearing bar size, bar spacing, cross bar pitch, panel size, bearing direction, surface, finish, cutouts, fixing method, quantity, packing and drawings. A load table can help early selection, but it should not replace the actual project drawing and quotation details.

What buyers should send: For steel grating load table review, buyers should send the support span, bearing bar height and thickness, bearing bar spacing, cross bar pitch, panel layout, load requirement wording, surface, finish, cutouts, fixing method and destination. QY can review the RFQ basis from those details, but should not confirm load rating or engineering compliance without project requirements.

Why load table wording needs context

Many buyers ask for a steel grating load table before they send a full drawing. That can be useful for early discussion, but the quotation still depends on the actual support span, bearing direction, panel size, bar size, fabrication details and finish.

For example, two grating panels may use similar bar spacing but different support spans or bearing bar sizes. Those details can change the review. If the buyer only sends a load value or total square meters, QY may need follow-up questions before preparing a cleaner quotation.

For product context, see steel bar grating, industrial platform grating and steel grating bearing bar size and spacing.

Specification details to confirm

Detail Why it matters What buyers should send
Support span Load table review depends on span Clear distance between supports or drawing reference
Bearing direction Defines how the panel sits on supports Bearing bar direction marked on layout
Bearing bar size Main grating basis Bar height, thickness and material wording
Bearing bar spacing Affects product description Spacing series or exact spacing from drawing
Cross bar pitch Helps identify the grating pattern Cross bar pitch or product code if used
Load requirement wording Gives review context Uniform load, point load or project wording if available
Panel layout Affects fabrication and packing Panel size, marks, cut list and quantity
Finish and surface Affects quotation wording Hot-dip galvanized, painted, black, stainless, smooth or serrated
Cutouts and fixing Affects fabrication scope Openings, notches, edge banding, clips or bolts

Why a steel grating deflection calculator is not universal

A steel grating deflection calculator can only be a preliminary screening aid when its inputs match the selected construction and project basis. The result depends on the exact bearing bar section, spacing, bearing direction, clear support span, load type and location, support condition, units and permitted deflection. A result from another series or an unlabeled online tool is not evidence that QY's quoted panel meets the project requirement.

Calculator or table input What must be identified Safe RFQ use
Product construction Welded, press-locked or drawing-specified series Keep the calculation tied to one construction
Bearing bar geometry Height, thickness, shape, material and spacing Prevent a generic bar size from representing another section
Clear support span Distance between the actual support edges Do not substitute overall panel length
Load case Uniform, concentrated or project-defined load with units and location Keep unlike load cases separate
Deflection criterion Project limit, units and responsible approval Treat an unlabeled result as incomplete
Source and revision Controlled table, calculation record or project document Let QY review the quotation basis without claiming structural approval

Until QY has verified structured data for the exact offered series, this page remains a load-table and RFQ-input guide rather than an interactive calculator.

Steel grating load reference: English transcription

These tables transcribe QY’s original seven-page load-table PDF, labelled YB/T4001.1-2007. This historical source is not presented as a current-standard certificate or a project capacity guarantee. Confirm the exact product, support arrangement, bearing direction, load type and deflection limit with QY before using a value. Steel figures do not apply to FRP.

Blank source cells remain blank; no values have been interpolated. Model suffixes and decimal precision are preserved. In table E7, the 30mm-spacing row for 29 bars reads 643/645mm in the original PDF; this apparent anomaly remains uncorrected and requires supplier confirmation.

U: safe additional uniformly distributed load, kN/m². C: safe additional line load at midspan, perpendicular to the bearing bars, kN/m. D: maximum deflection under the listed additional load, mm. The source states that its populated data region corresponds to less than 4mm maximum deflection under a 2kN/m² uniformly distributed load. Its weight note describes hot-dip galvanized grating of 1m length, while the column is labelled kg/m²; the required panel basis must be confirmed with QY. These notes are transcribed source conditions, not a design approval.

Table E1: Rectangular bars, 30mm centres

Source PDF page 1 (printed page 26)
Model Bearing bar depth (mm) Bearing bar thickness (mm) Theoretical weight (kg/m²) Span (mm)
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
G655/30/50W 65 5 103.4 U 3990 997 443 249 159 110 81 62 49 39 32 27 23 20 17
D 0.11 0.42 0.95 1.7 2.65 3.81 5.22 6.84 8.7 10.61 12.82 15.4 18.18 21.4 24.18
G655/30/100W 100.4 C 399 199 133 99 79 66 57 49 44 39 36 33 30 28 26
D 0.08 0.34 0.76 1.35 2.11 3.06 4.21 5.43 6.98 8.54 10.56 12.65 14.75 17.33 19.97
G605/30/50W 60 5 95.9 U 3400 850 377 212 136 94 69 53 41 34 28 23 20 17
D 0.11 0.46 1.03 1.84 2.89 4.15 5.66 7.45 9.28 11.78 14.28 16.73 20.16 23.23
G605/30/100W 92.9 C 340 170 113 85 68 56 48 42 37 34 30 28 26 24
D 0.09 0.37 0.83 1.48 2.31 3.3 4.52 5.93 7.48 9.49 11.23 13.71 16.31 18.98
G555/30/50W 55 5 88.4 U 2856 714 317 178 114 79 58 44 35 28 23 19 16
D 0.13 0.5 1.13 2 3.14 4.53 6.19 8.04 10.3 12.63 15.29 18.03 21.08
G555/30/100W 85.4 C 285 142 95 71 57 47 40 35 31 28 25 23 21
D 0.1 0.4 0.9 1.6 2.52 3.6 4.89 6.43 8.16 10.18 12.21 14.7 17.24
G505/30/50W 50 5 80.9 U 2361 590 262 147 94 65 48 36 29 23 19 16
D 0.14 0.55 1.24 2.2 3.45 4.97 6.82 8.78 11.39 13.86 16.88 20.28
G505/30/100W 77.9 C 236 118 78 59 47 39 33 29 26 23 21 19
D 0.11 0.44 0.99 1.77 2.77 3.99 5.39 7.11 9.14 11.18 13.7 16.26
G503/30/50W 50 3 52.6 U 1416 354 157 88 56 39 28 22 17 14 11
D 0.14 0.55 1.24 2.2 3.43 4.97 6.65 8.95 11.16 14.09 16.37
G503/30/100W 49.6 C 141 70 47 35 28 23 20 17 15 14 12
D 0.11 0.44 0.99 1.75 2.75 3.92 5.45 6.97 8.82 11.37 13.14
G455/30/50W 45 5 73.4 U 1912 478 212 119 76 53 39 29 23 19 15
D 0.15 0.61 1.38 2.45 3.83 5.56 7.62 9.73 12.44 15.76 18.39
G455/30/100W 70.4 C 191 95 63 47 38 31 27 23 21 19 17
D 0.12 0.49 1.09 1.94 3.07 4.35 6.06 7.76 10.16 12.72 15.31
G405/30/50W 40 5 65.9 U 1511 377 167 94 60 41 30 23 18 15
D 0.17 0.69 1.54 2.76 4.31 6.14 8.37 11.02 13.92 17.8
G405/30/100W 62.9 C 151 75 50 37 30 25 21 18 16 15
D 0.14 0.55 1.23 2.17 3.46 5.01 6.73 8.69 11.1 14.39
G403/30/50W 40 3 43.3 U 906 226 100 56 36 25 18 14 11
D 0.17 0.69 1.54 2.74 4.32 6.25 8.39 11.2 14.21
G403/30/100W 40.3 C 90 45 30 22 18 15 12 11 10
D 0.14 0.55 1.24 2.16 3.46 5.02 6.44 8.87 11.59
G355/30/50W 35 5 58.4 U 1156 289 128 72 46 32 23 18 14
D 0.2 0.79 1.77 3.16 4.94 7.17 9.61 12.92 16.24
G355/30/100W 55.4 C 115 57 38 28 23 19 16 14 12
D 0.16 0.62 1.4 2.46 3.97 5.7 7.69 10.14 12.52
G353/30/50W 35 3 38.6 U 694 173 77 43 27 19 14 10
D 0.2 0.79 1.77 3.14 4.84 7.11 9.77 12.03
G353/30/100W 35.6 C 69 34 23 17 13 11 9 8
D 0.16 0.62 1.41 2.49 3.75 5.52 7.25 9.71
G325/30/50W 32 5 53.9 U 967 241 107 60 38 26 19 15 11
D 0.22 0.86 1.94 3.44 5.35 7.64 10.42 14.13 16.81
G325/30/100W 50.9 C 96 48 32 24 19 16 13 12 10
D 0.17 0.68 1.55 2.76 4.3 6.3 8.21 11.4 13.73
G323/30/50W 32 3 35.8 U 580 145 64 36 23 16 11 9
D 0.21 0.86 1.93 3.45 5.41 7.85 10.09 14.19
G323/30/100W 32.8 C 58 29 19 14 11 9 8 7
D 0.17 0.69 1.53 2.69 4.16 5.93 8.44 11.15
G255/30/50W 25 5 43.4 U 590 147 65 36 23 16 12
D 0.28 1.1 2.47 4.35 6.82 9.92 13.9
G255/30/100W 40.4 C 59 29 19 14 11 9 8
D 0.22 0.87 1.93 3.39 5.25 7.5 10.71
G253/30/50W 25 3 29.3 U 354 88 39 22 14 9
D 0.28 1.1 2.47 4.43 6.94 9.35
G253/30/100W 26.3 C 35 17 11 8 7 5
D 0.22 0.85 1.86 3.24 5.58 7
G205/30/50W 20 5 36.0 U 377 94 41 23 15 10 See the transcribed source conditions above.
D 0.34 1.37 3.05 5.44 8.73 12.21
G205/30/100W 33.0 C 37 18 12 9 7 6
D 0.27 1.05 2.39 4.28 6.57 9.85
G203/30/50W 20 3 24.6 U 226 56 25 14 9
D 0.34 1.37 3.1 5.53 8.76
G203/30/100W 21.6 C 22 11 7 5 4
D 0.27 1.07 2.32 3.98 6.3

Table E2: Rectangular bars, 40mm centres

Source PDF page 2 (printed page 27)
Model Bearing bar depth (mm) Bearing bar thickness (mm) Theoretical weight (kg/m²) Span (mm)
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
G655/40/50W 65 5 81.7 U 2992 748 332 187 119 83 61 46 36 29 24 20 17 15
D 0.11 0.42 0.95 1.7 2.65 3.84 3.93 6.78 8.54 10.54 12.84 15.25 17.97 21.46
G655/40/100W 78.7 C 299 149 99 74 59 49 42 37 33 29 27 24 23 21
D 0.08 0.34 0.76 1.35 2.1 3.03 4.14 5.47 6.99 8.49 10.58 12.32 15.1 17.39
G605/40/50W 60 5 75.9 U 2550 637 283 159 102 70 52 39 31 25 21 17 15
D 0.11 0.46 1.03 1.84 2.89 4.12 4.27 7.32 9.36 11.57 14.31 16.54 20.21
G605/40/100W 72.9 C 255 127 85 63 51 42 36 31 28 25 23 21 19
D 0.09 0.37 0.83 1.46 2.31 3.31 4.52 5.84 7.56 9.32 11.5 13.74 15.97
G555/40/50W 55 5 70.1 U 2142 535 238 133 85 59 43 33 26 21 17 14
D 0.13 0.5 1.13 2 3.13 4.51 4.59 8.05 10.22 12.66 15.11 17.77
G555/40/100W 67.1 C 214 107 71 53 42 35 30 26 23 21 19 17
D 0.1 0.4 0.9 1.59 2.48 3.58 4.9 6.38 8.09 10.2 12.39 14.54
G505/40/50W 50 5 64.2 U 1770 442 196 110 70 49 36 27 21 17 14
D 0.14 0.55 1.24 2.2 3.43 5 5.12 8.79 11.02 13.69 16.64
G505/40/100W 61.2 C 177 88 59 44 35 29 25 22 19 17 16
D 0.11 0.44 0.99 1.76 2.75 3.96 5.45 7.2 8.93 11.05 13.95
G503/40/50W 50 3 42.6 U 1062 265 118 66 42 29 21 16 13 10
D 0.14 0.55 1.24 2.2 3.43 4.94 4.99 8.71 11.4 13.49
G503/40/100W 39.6 C 106 53 35 26 21 17 15 13 11 10
D 0.11 0.44 0.98 1.74 2.75 3.87 5.46 7.11 8.66 10.9
G455/40/50W 45 5 58.4 U 1434 358 159 89 57 39 29 22 17 14 11
D 0.15 0.61 1.38 2.44 3.83 5.46 5.67 9.85 12.28 15.53 18.05
G455/40/100W 55.4 C 143 71 47 35 28 23 20 17 15 14 13
D 0.12 0.49 1.09 1.92 3.02 4.31 5.99 7.67 9.72 12.54 15.64
G405/40/50W 40 5 52.6 U 1133 283 125 70 45 31 23 17 13 11
D 0.17 0.69 1.54 2.74 4.32 6.2 6.42 10.88 13.45 17.47
G405/40/100W 49.6 C 113 56 37 28 22 18 16 14 12 11
D 0.14 0.54 1.22 2.19 3.39 4.82 6.85 9.02 11.13 14.13
G403/40/50W 40 3 35.3 U 680 170 75 42 27 18 13 10 8
D 0.17 0.69 1.54 2.74 4.32 6.01 6.08 10.71 13.84
G403/40/100W 32.3 C 68 34 22 17 13 11 9 8 7
D 0.14 0.55 1.21 2.22 3.34 4.92 6.45 8.64 10.9
G355/40/50W 35 5 46.8 U 867 216 96 54 34 24 17 13 10
D 0.2 0.78 1.77 3.16 4.88 7.18 7.12 12.48 15.54
G355/40/100W 43.8 C 86 43 28 21 17 14 12 10 9
D 0.16 0.62 1.38 2.46 3.91 5.61 7.71 9.7 12.57
G353/40/50W 35 3 31.6 U 520 130 57 32 20 14 10 8
D 0.2 0.79 1.75 3.12 4.79 7 7.01 12.85
G353/40/100W 28.6 C 52 26 17 13 10 8 7 6
D 0.16 0.63 1.4 2.54 3.85 5.37 7.53 9.75
G325/40/50W 32 5 43.3 U 725 181 80 45 29 20 14 11
D 0.21 0.86 1.93 3.45 5.45 7.84 7.7 13.86
G325/40/100W 40.3 C 72 36 24 18 14 12 10 9
D 0.17 0.68 1.55 2.76 4.23 6.31 8.43 11.44
G323/40/50W 32 3 29.4 U 435 108 48 27 17 12 8
D 0.21 0.86 1.93 3.45 5.34 7.86 7.37
G323/40/100W 26.4 C 43 21 14 10 8 7 6
D 0.17 0.67 1.5 2.56 4.04 6.16 8.47
G255/40/50W 25 5 35.1 U 442 110 49 27 17 12 9
D 0.27 1.1 2.48 4.35 6.74 9.94 10.46
G255/40/100W 32.1 C 44 22 14 11 8 7 6
D 0.22 0.88 1.9 3.55 5.1 7.79 10.74
G253/40/50W 25 3 24.3 U 265 66 29 16 10 7
D 0.27 1.1 2.45 4.3 6.63 9.71
G253/40/100W 21.3 C 26 13 8 6 5 4
D 0.22 0.87 1.81 3.24 5.33 7.48
G205/40/50W 20 5 29.3 U 283 70 31 17 11 7 See the transcribed source conditions above.
D 0.34 1.36 3.08 5.37 8.56 11.46
G205/40/100W 26.3 C 28 14 9 7 5 4
D 0.27 1.09 2.39 4.44 6.29 8.84
G203/40/50W 20 3 20.6 U 170 42 18 10 6
D 0.34 1.37 2.98 5.28 7.84
G203/40/100W 17.6 C 17 8 5 4 3
D 0.28 1.04 2.22 4.25 6.32

Table E3: Rectangular bars, 20mm centres

Source PDF page 3 (printed page 28)
Model Bearing bar depth (mm) Bearing bar thickness (mm) Theoretical weight (kg/m²) Span (mm)
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
G605/20/50W 60 5 138.3 U 5100 1275 566 318 204 141 104 79 62 51 42 35 30 26 22
D 0.11 0.46 1.03 1.84 2.88 4.15 5.69 7.4 9.34 11.77 14.27 16.94 20.13 23.62 26.57
G605/20/100W 135.3 C 510 255 170 127 102 85 72 63 56 51 46 42 39 36 34
D 0.09 0.37 0.83 1.47 2.31 3.34 4.51 5.92 7.54 9.47 11.45 13.68 16.28 18.93 22.17
G555/20/50W 55 5 127.3 U 4285 1071 476 267 171 119 87 66 52 42 35 29 25 21
D 0.13 0.5 1.13 2 3.14 4.55 6.18 8.04 10.19 12.62 15.48 18.3 21.87 24.94
G555/20/100W 124.3 C 428 214 142 107 85 71 61 53 47 42 38 35 32 30
D 0.1 0.4 0.9 1.61 2.5 3.63 4.97 6.48 8.24 10.17 12.34 14.87 17.45 20.61
G505/20/50W 50 5 116.3 U 3541 885 393 221 141 98 72 55 43 35 29 24 20
D 0.14 0.55 1.24 2.21 3.45 4.99 6.82 8.93 11.25 14.03 17.14 20.24 23.45
G505/20/100W 113.3 C 354 177 118 88 70 59 50 44 39 35 32 29 27
D 0.11 0.44 0.99 1.76 2.75 4.02 5.43 7.18 9.12 11.32 13.88 16.49 19.69
G503/20/50W 50 3 73.8 U 2125 531 236 132 85 59 43 33 26 21 17 14
D 0.14 0.55 1.24 2.2 3.47 5.01 6.79 8.94 11.35 14.06 16.8 19.76
G503/20/100W 70.8 C 212 106 70 53 42 35 30 26 23 21 19 17
D 0.11 0.44 0.98 1.77 2.75 3.98 5.44 7.08 8.99 11.34 13.78 16.18
G455/20/50W 45 5 105.2 U 2868 717 318 179 114 79 58 44 35 28 23 19
D 0.15 0.61 1.38 2.46 3.83 5.53 7.55 9.83 12.59 15.47 18.74 22.13
G455/20/100W 102.2 C 286 143 95 71 57 47 40 35 31 28 26 23
D 0.12 0.49 1.1 1.95 3.07 4.4 5.98 7.86 9.99 12.48 15.55 18.08
G405/20/50W 40 5 94.2 U 2266 566 251 141 90 62 46 35 27 22 18
D 0.17 0.69 1.55 2.76 4.31 6.19 8.55 11.16 13.9 17.39 21.01
G405/20/100W 91.2 C 226 113 75 56 45 37 32 28 25 22 20
D 0.14 0.55 1.23 2.19 3.46 4.94 6.83 8.99 11.52 14.05 17.18
G403/20/50W 40 3 60.3 U 1360 340 151 85 54 37 27 21 16 13
D 0.17 0.69 1.55 2.77 4.31 6.16 8.37 11.18 13.76 17.18
G403/20/100W 57.3 C 136 68 45 34 27 22 19 17 15 13
D 0.14 0.55 1.23 2.22 3.46 4.9 6.77 9.11 11.55 13.89
G355/20/50W 35 5 83.2 U 1735 433 192 108 69 48 35 27 21 17
D 0.2 0.79 1.77 3.15 4.94 7.16 9.74 12.9 16.21 20.17
G355/20/100W 80.2 C 173 86 57 43 34 28 24 21 19 17
D 0.16 0.62 1.4 2.52 3.91 5.6 7.68 10.12 13.15 16.32
G353/20/50W 35 3 53.5 U 1041 260 115 65 41 28 21 16 12
D 0.2 0.79 1.77 3.17 4.9 6.98 9.75 12.77 15.51
G353/20/100W 50.5 C 104 52 34 26 20 17 14 13 11
D 0.16 0.63 1.39 2.54 3.84 5.67 7.49 10.45 12.75
G325/20/50W 32 5 76.6 U 1450 362 161 90 58 40 29 22 17 14
D 0.21 0.86 1.94 3.44 5.44 7.82 10.58 13.8 17.25 21.85
G325/20/100W 73.6 C 145 72 48 36 29 24 20 18 16 14
D 0.17 0.68 1.54 2.76 4.37 6.29 8.4 11.38 14.55 17.7
G323/20/50W 32 3 49.4 U 870 217 96 54 34 24 17 13 10
D 0.21 0.86 1.93 3.44 5.32 7.83 10.37 13.64 16.98
G323/20/100W 46.4 C 87 43 29 21 17 14 12 10 9
D 0.17 0.68 1.56 2.69 4.27 6.13 8.42 10.6 13.74
G255/20/50W 25 5 61.1 U 885 221 98 55 35 24 18 13
D 0.28 1.1 2.48 4.42 6.91 9.9 13.87 17.31
G255/20/100W 58.1 C 88 44 29 22 17 14 12 11
D 0.22 0.88 1.96 3.55 5.4 7.76 10.68 14.76
G253/20/50W 25 3 39.9 U 531 132 59 33 21 14 10
D 0.28 1.1 2.49 4.43 6.92 9.66 12.92
G253/20/100W 36.9 C 53 26 17 13 10 8 7
D 0.22 0.86 1.92 3.5 5.3 7.42 10.43
G205/20/50W 20 5 50.1 U 566 141 62 35 22 15 11 See the transcribed source conditions above.
D 0.34 1.37 3.07 5.51 8.53 12.18 16.74
G205/20/100W 47.1 C 56 28 18 14 11 9 8
D 0.27 1.09 2.38 4.43 6.86 9.82 14.04
G203/20/50W 20 3 33.1 U 340 85 37 21 13 9
D 0.34 1.38 3.06 5.52 8.42 12.22
G203/20/100W 30.1 C 34 17 11 8 6 5
D 0.28 1.11 2.43 4.23 6.27 9.16

Table E4: I-section bars, 30mm centres

Source PDF page 4 (printed page 29)
Model I-section depth (mm) Flange thickness (mm) Web thickness (mm) Flange width (mm) Theoretical weight (kg/m²) Span (mm)
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
G757/30/50WI 75 7 4 12 126.1 U 6460 1615 717 403 258 179 131 100 79 64 53 44 38 32 28
D 0.09 0.37 0.83 1.47 2.3 3.31 4.5 5.88 7.47 9.25 11.26 13.3 15.89 18.11 20.99
G757/30/100WI 120.7 C 646 323 215 161 129 107 92 80 71 64 58 53 49 46 43
D 0.07 0.29 0.66 1.17 1.84 2.65 3.62 4.72 5.99 7.44 9.02 10.76 12.72 15 17.36
G657/30/50WI 65 7 4 10 110.1 U 4862 1215 540 303 194 135 99 75 60 48 40 33 28 24 21
D 0.11 0.42 0.95 1.69 2.65 3.83 5.22 6.77 8.71 10.67 13.07 15.36 18.05 20.94 24.29
G657/30/100WI 104.8 C 486 243 162 121 97 81 69 60 54 48 44 40 37 34 32
D 0.08 0.34 0.76 1.35 2.12 3.07 4.17 5.44 7 8.58 10.53 12.5 14.8 17.12 19.96
G607/30/50WI 60 7 4 10 99.1 U 4216 1054 468 263 168 117 86 65 52 42 34 29 24 21 18
D 0.11 0.46 1.03 1.83 2.86 4.13 5.65 7.31 9.4 11.62 13.85 16.81 19.29 22.82 25.97
G607/30/100WI 96.1 C 421 210 140 105 84 70 60 52 46 42 38 35 32 30 28
D 0.09 0.36 0.82 1.46 2.29 3.3 4.52 5.87 7.43 9.35 11.33 13.63 15.96 18.82 21.77
G557/30/50WI 55 7 4 8.5 90.3 U 3502 875 389 218 140 97 71 54 43 35 28 24 20 17
D 0.13 0.5 1.13 2 3.15 4.53 6.17 8.03 10.29 12.82 15.11 18.44 21.32 24.55
G557/30/100WI 87.3 C 350 175 116 87 70 58 50 43 38 35 31 29 26 25
D 0.1 0.4 0.9 1.6 2.52 3.62 4.98 6.42 8.13 10.32 12.26 14.98 17.23 20.83
G507/30/50WI 50 7 4 8 83.2 U 2912 728 323 182 116 80 59 45 35 29 24 20 17
D 0.14 0.55 1.24 2.21 3.44 4.94 6.78 8.85 11.09 14.07 17.14 20.37 24.01
G507/30/100WI 80.2 C 291 145 97 72 58 48 41 36 32 29 26 24 22
D 0.11 0.44 0.99 1.75 2.76 3.96 5.4 7.12 9.06 11.33 13.63 16.45 19.34
G505/30/50WI 50 5 3 8.5 62.8 U 2085 521 231 130 83 57 42 32 25 20 17 14
D 0.14 0.55 1.23 2.2 3.44 4.91 6.73 8.79 11.06 13.57 16.97 19.95
G505/30/100WI 59.8 C 208 104 69 52 41 34 29 26 23 20 18 17
D 0.11 0.44 0.98 1.76 2.72 3.92 5.33 7.17 9.09 10.94 13.21 16.31
G445/30/50WI 44 5 3 8 56.5 U 1654 413 183 103 66 45 33 25 20 16 13
D 0.16 0.62 1.4 2.5 3.92 5.56 7.59 9.86 12.71 15.6 18.7
G445/30/100WI 53.5 C 165 82 55 41 33 27 23 20 18 16 15
D 0.12 0.5 1.12 1.99 3.14 4.46 6.07 7.93 10.23 12.58 15.81
G385/30/50WI 38 5 3 7 49.9 U 1246 311 138 77 49 34 25 19 15 12
D 0.18 0.73 1.64 2.89 4.51 6.52 8.93 11.64 14.82 18.22
G385/30/100WI 46.9 C 124 62 41 31 24 20 17 15 13 12
D 0.14 0.58 1.3 2.33 3.55 5.13 6.98 9.25 11.53 14.72
G325/30/50WI 32 5 3 6 43.3 U 884 221 98 55 35 24 18 13 10
D 0.21 0.86 1.94 3.44 5.37 7.68 10.74 13.35 16.6
G325/30/100WI 40.3 C 88 44 29 22 17 14 12 11 9
D 0.17 0.69 1.53 2.76 4.19 6.01 8.24 11.36 13.42
G255/30/50WI 25 5 3 4.5 35.1 U 544 136 60 34 21 15 11
D 0.28 1.1 2.47 4.45 6.75 10.06 13.77
G255/30/100WI 32.1 C 54 27 18 13 10 9 7
D 0.22 0.88 1.98 3.41 5.17 8.09 10.13
See the transcribed source conditions above.

Table E5: I-section bars, 40mm centres

Source PDF page 5 (printed page 30)
Model I-section depth (mm) Flange thickness (mm) Web thickness (mm) Flange width (mm) Theoretical weight (kg/m²) Span (mm)
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
G757/40/50WI 75 7 4 12 101 U 4845 1211 538 302 193 134 98 75 75 59 48 40 33 28 24
D 0.09 0.37 0.83 1.47 2.29 3.31 4.49 5.89 5.89 7.44 9.27 11.35 13.33 15.66 18.16
G757/40/100WI 95.6 C 484 242 161 121 96 80 69 60 60 53 48 44 40 37 34
D 0.07 0.29 0.66 1.18 1.83 2.64 3.63 4.72 4.72 5.97 7.45 9.13 10.85 12.83 14.83
G657/40/50WI 65 7 4 10 88.5 U 3646 911 405 227 145 101 74 56 56 45 36 30 25 21 18
D 0.11 0.42 0.95 1.69 2.64 3.83 5.21 6.75 6.75 8.72 10.68 13.1 15.54 18.1 21
G657/40/100WI 83.2 C 364 182 121 91 72 60 52 45 45 40 36 33 30 28 26
D 0.08 0.34 0.76 1.36 2.1 3.04 4.2 5.44 5.44 6.92 8.6 10.55 12.54 14.98 17.5
G607/40/50WI 60 7 4 10 78.9 U 3162 790 351 197 126 87 64 49 49 39 31 26 21 18 16
D 0.11 0.46 1.03 1.83 2.86 4.1 5.61 7.35 7.35 9.41 11.46 14.13 16.28 19.33 23.23
G607/40/100WI 75.9 C 316 158 105 79 63 52 45 39 39 35 31 28 26 24 22
D 0.09 0.37 0.82 1.47 2.29 3.28 4.52 5.87 5.87 7.54 9.22 11.16 13.54 16 18.48
G557/40/50WI 55 7 4 8.5 71.9 U 2626 656 291 164 105 72 53 41 41 32 26 21 18 15
D 0.13 0.5 1.13 2.01 3.15 4.49 6.14 8.14 8.14 10.22 12.72 15.14 18.48 21.37
G557/40/100WI 68.9 C 262 131 87 65 52 43 37 32 32 29 26 23 21 20
D 0.1 0.4 0.9 1.59 2.5 3.58 4.92 6.38 6.38 8.28 10.25 12.16 14.53 17.71
G507/40/50WI 50 7 4 8 66.4 U 2184 546 242 136 87 60 44 34 34 26 21 18 15
D 0.14 0.55 1.24 2.2 3.45 4.95 6.74 8.93 8.93 11 13.62 17.18 20.42
G507/40/100WI 63.4 C 218 109 72 54 43 36 31 27 27 24 21 19 18
D 0.11 0.44 0.98 1.75 2.73 3.97 5.45 7.13 7.13 9.07 10.98 13.33 16.5
G505/40/50WI 50 5 3 8.5 50.4 U 1564 391 173 97 62 43 31 24 24 19 15 12
D 0.14 0.55 1.23 2.19 3.43 4.95 6.64 8.8 8.8 11.22 13.6 16.05
G505/40/100WI 47.4 C 156 78 52 39 31 26 22 19 19 17 15 14
D 0.11 0.44 0.99 1.76 2.75 4 5.4 7.01 7.01 8.98 10.96 13.72
G445/40/50WI 44 5 3 8 45.5 U 1241 310 137 77 49 34 25 19 19 15 12
D 0.16 0.62 1.4 2.49 3.88 5.61 7.68 10.01 10.01 12.73 15.64
G445/40/100WI 42.5 C 124 62 41 31 24 20 17 15 15 13 12
D 0.12 0.5 1.12 2.01 3.05 4.41 5.99 7.95 7.95 9.89 12.62
G385/40/50WI 38 5 3 7 40.3 U 935 233 103 58 37 25 19 14 14 11
D 0.18 0.73 1.63 2.91 4.55 6.4 9.06 11.47 11.47 14.54
G385/40/100WI 37.3 C 93 46 31 23 18 15 13 11 11 10
D 0.14 0.57 1.31 2.31 3.55 5.14 7.12 9.08 9.08 11.85
G325/40/50WI 32 5 3 6 35.1 U 663 165 73 41 26 18 13 10 10
D 0.21 0.86 1.92 3.43 5.33 7.69 10.37 13.71 13.71
G325/40/100WI 32.1 C 66 33 22 16 13 11 9 8 8
D 0.17 0.69 1.55 2.68 4.28 6.3 8.26 11.06 11.06
G255/40/50WI 25 5 3 4.5 28.7 U 408 102 45 25 16 11 8
D 0.28 1.1 2.47 4.36 6.86 9.86 13.41
G255/40/100WI 25.8 C 40 20 13 10 8 6 5
D 0.22 0.87 1.91 3.5 5.51 7.24 9.71
See the transcribed source conditions above.

Table E6: Heavy-duty pressure-welded grating

Source PDF page 6 (printed page 31)
Model Bearing bar depth (mm) Bearing bar thickness (mm) Cross-bar size (mm) Theoretical weight (kg/m²) Span (mm)
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
G1508/40/100 150 8 8X8 284..9 U 25500 6375 2833 1593 1020 708 520 398 314 255 210 177 150 130 113
D 0.05 0.18 0.41 0.73 1.15 1.66 2.26 2.95 3.74 4.63 5.6 6.7 7.85 9.17 10.54
C 2550 1275 850 637 510 425 364 318 283 255 231 212 196 182 170
D 0.04 0.15 0.33 0.59 0.92 1.33 1.81 2.36 3 3.72 4.5 5.37 6.34 7.38 8.51
G1308/40/100 130 8 8X8 247.6 U 19153 4788 2128 1197 766 532 390 299 236 191 158 133 113 97 85
D 0.05 0.21 0.48 0.85 1.33 1.91 2.6 3.41 4.32 5.34 6.49 7.76 9.11 10.55 12.22
C 1915 957 638 478 383 319 273 239 212 191 174 159 147 136 127
D 0.04 0.17 0.38 0.68 1.06 1.53 2.09 2.73 3.46 4.29 5.22 6.21 7.33 8.5 9.81
G1208/40/100 120 8 8X8 229.0 U 16320 4080 1813 1020 653 453 333 255 201 163 134 113 96 83 72
D 0.06 0.23 0.52 0.92 1.44 2.07 2.83 3.7 4.68 5.8 7 8.39 9.85 11.5 13.2
C 1632 816 544 408 326 272 233 204 181 163 148 136 125 116 108
D 0.05 0.18 0.41 0.74 1.15 1.66 2.26 2.97 3.76 4.66 5.65 6.77 7.94 9.24 10.64
G1008/40/100 100 8 8X8 191.7 U 11333 2833 1259 708 453 314 231 177 139 113 93 78 67 57 50
D 0.07 0.28 0.62 1.1 1.73 2.48 3.39 4.45 5.61 6.97 8.43 10.05 11.94 13.73 15.94
C 1133 566 377 283 226 188 161 141 125 113 103 94 87 80 75
D 0.06 0.22 0.5 0.88 1.38 1.99 2.71 3.55 4.5 5.6 6.82 8.12 9.6 11.09 12.86
G908/40/100 90 8 8X8 173.1 U 9180 2295 1020 573 367 255 187 143 113 91 75 63 54 46 40
D 0.08 0.31 0.69 1.22 1.92 2.77 3.77 4.93 6.26 7.72 9.35 11.17 13.24 15.25 17.57
C 918 459 306 229 183 153 131 114 102 91 83 76 70 65 61
D 0.06 0.24 0.55 0.98 1.53 2.22 3.03 3.94 5.04 6.2 7.56 9.04 10.64 12.42 14.42
G808/40/100 80 8 8X8 154.4 U 7253 1813 805 453 290 201 148 113 89 72 59 50 42 37 32
D 0.09 0.34 0.77 1.38 2.16 3.11 4.25 5.56 7.04 8.71 10.5 12.66 14.73 17.53 20.11
C 725 362 241 181 145 120 103 90 80 72 65 60 55 51 48
D 0.07 0.27 0.62 1.1 1.73 2.48 3.39 4.44 5.65 7.01 8.47 10.2 11.97 13.96 16.27
G758/40/100 75 8 8X8 145.1 U 6375 1593 708 398 255 177 130 99 78 63 52 44 37 32 28
D 0.09 0.37 0.83 1.47 2.31 3.33 4.54 5.92 7.5 9.27 11.25 13.55 15.78 18.47 21.42
C 637 318 212 159 127 106 91 79 70 63 57 53 49 45 42
D 0.07 0.29 0.66 1.18 1.84 2.66 3.64 4.74 6.01 7.45 9.03 10.96 12.97 14.99 17.35
G756/30/100 75 6 8X8 140.1 U 6375 1593 708 398 255 177 130 99 78 63 52 44 37 32 28
D 0.09 0.37 0.83 1.47 2.3 3.33 4.54 5.91 7.49 9.26 11.24 13.53 15.76 18.44 21.39
C 637 318 212 159 127 106 91 79 70 63 57 53 49 45 42
D 0.07 0.29 0.66 1.18 1.84 2.66 3.64 4.74 6 7.45 9.02 10.95 12.95 14.97 17.31
G756/40/100 75 6 8X8 110.1 U 4781 1195 531 298 191 132 97 74 59 47 39 33 28 24 21
D 0.09 0.37 0.83 1.47 2.3 3.31 4.52 5.9 7.56 9.22 11.25 13.55 15.93 18.48 21.44
C 478 239 159 119 95 79 68 59 53 47 43 39 36 34 31
D 0.07 0.29 0.66 1.17 1.83 2.64 3.63 4.72 6.06 7.42 9.08 10.77 12.73 15.11 17.1
G706/30/100 70 6 8X8 131.1 U 5553 1388 617 347 222 154 113 86 68 55 45 38 32 28 24
D 0.1 0.39 0.89 1.58 2.47 3.56 4.85 6.32 8.04 9.96 11.99 14.41 16.82 19.9 22.65
C 555 277 185 138 111 92 79 69 61 55 50 46 42 39 37
D 0.08 0.31 0.71 1.26 1.98 2.84 3.89 5.09 6.44 8.01 9.75 11.72 13.71 16.02 18.82
G706/40/100 70 6 8X8 103.2 U 4165 1041 462 260 166 115 85 65 51 41 34 28 24 21 18
D 0.1 0.39 0.88 1.58 2.46 3.55 4.87 6.38 8.05 9.91 12.09 14.19 16.85 19.95 22.7
C 416 208 138 104 83 69 59 52 46 41 37 34 32 29 27
D 0.08 0.31 0.71 1.26 1.97 2.84 3.88 5.12 6.48 7.98 9.64 11.58 13.95 15.93 18.4
See the transcribed source conditions above.

Table E7 — section 1: Bearing bar count and nominal panel width

Source PDF page 7 (printed page 32)
Bearing bar spacing: 20mm
Number of bearing bars Nominal grating width, 3mm thick bars (mm) Nominal grating width, 5mm thick bars (mm)
51 1003 1005
50 983 985
49 963 965
48 943 945
47 923 925
46 903 905
45 883 885
44 863 865
43 843 845
42 823 825
41 803 805
40 783 785
39 763 765
38 743 745
37 723 725
36 703 705
35 683 685
34 663 665
33 643 645
32 623 625
31 603 605
30 583 585
29 563 565
28 543 545
27 523 525
26 503 505
25 483 485
24 463 465
23 443 445
22 423 425
21 403 405
20 383 385
19 363 365
18 343 345
17 323 325
16 303 305
15 283 285
14 263 265
13 243 245
12 223 225
11 203 205
10 183 185

Table E7 — section 2: Bearing bar count and nominal panel width

Source PDF page 7 (printed page 32)
Bearing bar spacing: 30mm
Number of bearing bars Nominal grating width, 3mm thick bars (mm) Nominal grating width, 5mm thick bars (mm)
34 993 995
33 963 965
32 933 935
31 903 905
30 873 875
29 843 645
28 813 815
27 783 785
26 753 755
25 723 725
24 693 695
23 663 665
22 633 635
21 603 605
20 573 575
19 543 545
18 513 515
17 483 485
16 453 455
15 423 425
14 393 395
13 363 365
12 333 335
11 303 305
10 273 275
9 243 245
8 213 215
7 183 185

Table E7 — section 3: Bearing bar count and nominal panel width

Source PDF page 7 (printed page 32)
Bearing bar spacing: 40mm
Number of bearing bars Nominal grating width, 3mm thick bars (mm) Nominal grating width, 5mm thick bars (mm)
26 1003 1005
25 963 965
24 923 925
23 883 885
22 843 845
21 803 805
20 763 765
19 723 725
18 683 685
17 643 645
16 603 605
15 563 565
14 523 525
13 483 485
12 443 445
11 403 405
10 363 365
9 323 325
8 283 285
7 243 245
6 203 205
5 163 165
4 123 125

Key terms to clarify

  • Support span: The clear distance between the supports under the bearing bars.
  • Bearing bar: The main bar that carries load in the support direction.
  • Cross bar pitch: The spacing of cross bars that connect the bearing bars.
  • Uniform load: A load spread over an area, not a single concentrated point.

What to prepare before sending RFQ

For a faster steel grating load table and quotation review, prepare:

  • Platform, walkway, trench or equipment access drawing.
  • Support span and bearing direction.
  • Bearing bar height, thickness and spacing.
  • Cross bar pitch or grating code if already specified.
  • Load requirement wording if available.
  • Deflection criterion, units and controlled calculation or table reference if required.
  • Panel sizes, quantity and panel marks.
  • Smooth or serrated surface request.
  • Finish request.
  • Cutouts, edge banding and fixing method.
  • Packing, destination and loading request.

RFQ checklist

Before sending a steel grating load table RFQ, confirm:

  • Application area.
  • Support span.
  • Bearing direction.
  • Bearing bar size.
  • Bearing bar spacing.
  • Cross bar pitch.
  • Load wording if available.
  • Panel size and quantity.
  • Surface and finish.
  • Cutouts, fixing, packing and drawings.

Related QY pages

FAQ

Is a steel grating load table enough for quotation?

No. A load table can support early review, but quotation still needs support span, bearing direction, bar size, spacing, panel layout, finish, cutouts, fixing method, quantity, packing and drawings.

What is the most important detail for load table review?

Support span and bearing direction are usually critical starting points, because the bearing bars must be reviewed in the direction they sit on supports.

Can QY confirm load capacity from a product name only?

No. QY should not confirm load capacity, engineering suitability or local compliance from a product name only. Project requirements and drawings are needed.

What should buyers send if they do not know the exact load?

Buyers can send the application, support span, drawing, panel size, bar size if known, surface, finish, quantity and destination. QY can then review what is still missing.

Related links

Related products and RFQ guides

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Wuxi Qiyue Steel Grating Co., Ltd. · QY Metal TechYanfeng Road, Yanqiao Industrial Park, Wuxi, Jiangsu, China