Safe load table for Durbar and Chequer Plate flooring
Specifically for platforms and other large floor areas. Mild Steel to BS 4360: Grade 43A
For floor plates supported and securely bolted down on all four sides.
Tabulated loads are calculated to a maximum stress of 165N/mm2.

Thickness
O/Plain
 Mass
kg/m2
 Loads shown in kN/m2 for spans in metres
 Breadth
in
metres
0.6m
0.8m
1.0m
1.2m
1.4m
1.6m
1.8m
2.0m
3mm
 26.2
7.82
5.78
5.18
4.95
4.85
4.80
4.77
4.76
0.6
-
3.29
2.58
2.28
2.15
2.09
2.05
2.03
0.8
4.5mm
37.97
26.4
19.5
17.5
16.7
16.4
16.2
16.1
16.0
0.6
-
11.1
8.7
7.70
7.26
7.05
6.92
6.86
0.8
-
-
5.70
4.59
4.09
3.83
3.69
3.61
1.0
6mm
49.74
50.9
39.2
35.7
34.4
33.8
33.4
33.3
33.2
0.6
-
26.4
20.5
18.2
17.2
16.7
16.4
16.2
0.8
-
-
13.5
10.9
9.68
9.08
8.74
8.55
1.0
-
-
-
7.82
6.46
5.78
5.61
5.18
1.2
-
-
-
-
4.92
4.15
3.74
3.49
1.4
8mm
65.44
90.5
69.7
63.5
61.1
60.0
59.5
59.2
59.0
0.6
-
50.9
40.9
37.0
35.3
34.4
33.9
33.6
0.8
-
-
32.1
25.8
22.9
21.5
20.7
20.3
1.0
-
-
-
18.5
15.3
13.7
12.8
12.3
1.2
-
-
-
-
11.7
9.85
8.85
8.26
1.4
-
-
-
-
-
7.82
6.71
6.06
1.6
-
-
-
-
-
-
5.49
4.78
1.8
10mm
81.14
141
109
99.2
95.5
93.7
92.9
92.4
92.2
0.6
-
79.5
63.8
57.9
55.1
53.7
52.9
52.5
0.8
-
-
50.9
42.1
38.2
36.2
35.0
34.4
1.0
-
-
-
35.5
29.9
26.7
25.0
24.0
1.2
-
-
-
-
22.8
19.2
17.3
16.1
1.4
-
-
-
-
-
15.3
13.1
11.9
1.6
-
-
-
-
-
-
10.7
9.34
1.8


Deflection is limited to Span/200.

Where floor plates are supported on all four sides but not bolted down
the tabulated loads must be reduced and deflections checked.