Table of loads for welded gratings with the step of bearing strips t = 34.3

— range recommended by the manufacturer. In this range, the deflection arrow does not exceed 1/200 of the distance between the supports and is always less than 4 mm. The data are for the effect of a point single load of 150 kg on the contact spot 200x200 mm anywhere in the lattice.

— range in which the deflection arrow does not exceed 1/200 of the distance between the supports under the influence of a point single load of 150 kg on the contact spot 200x200 mm anywhere in the lattice

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Explanation to the load table

All data in the load table are calculated for steel S235 or its analogues (St 37-2, St3sp)

For cell t x q 34.3 x 38.1 values from the table
For cell t x q

34.3 x 50.8

34.3 x 76.2

34.3 x 101.6

a coefficient of 0.95 is applied from the values in the table

Fv - distributed load in kg / m2

fv - deflection boom from distributed load (cm)

Fp - concentrated load in kg / m2, acting   on an area of 200x200 mm

fp - deflection boom from concentrated load (cm)

The height of the bearing strip %
25 10
30 8.5
40 7.2
45 6.3
50 5
60 4.2
70 3.6

The following reduction factors are used for lattice decking with serrated teeth: 

Permissible compressive and tensile stresses of steel – 1600 kg / cm2
Safety factor to the limit of plasticity   — 1.5
Safety factor up to tensile strength — 2.35
The support of the lattice should be equal to the height of the bearing strip, but in any case not less than 30 mm