— 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
.
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