16.5.2 Rating for Various Modes of Use
Always ensure that slings of sufficient capacity are selected and that careful consideration is given to the mode of assembly. The marked working load limit of the sewn webbing component must be multiplied by the appropriate mode factor to obtain the SWL for the particular mode of assembly and this SWL must not be exceeded. Various modes of assembly, mode factors and SWLs for single and endless slings are given in the following tables.
SWL In Tonnes | ||||
|---|---|---|---|---|
Basket Hitch | ||||
Straight Pull (equal to WLL) M = 1 | (Colour) | Choke Hitch M = 0.8 | Parallel M = 2 | 0-45° to vertical M = 1.4 |
1 | Violet | 0.8 | 2 | 1.4 |
2 | Green | 1.6 | 4 | 2.8 |
3 | Yellow | 2.4 | 6 | 4.2 |
4 | Grey | 3.2 | 8 | 5.6 |
5 | Red | 4.0 | 10 | 7.0 |
6 | Brown | 4.8 | 12 | 8.4 |
8 | Blue | 6.4 | 16 | 11.2 |
10 | Orange | 8.0 | 20 | 14.0 |
10+ | Orange | |||
SWL In Tonnes | ||
|---|---|---|
Straight Pull per Leg (= to WLL per Sling Leg) M = 1 | 2 Leg Sling Assembly 0-45° to vertical M = 1.4 | 4 Leg Sling Assembly 0-45° to vertical M = 2.1 |
1 | 1.4 | 2.1 |
2 | 2.8 | 4.2 |
3 | 4.2 | 6.3 |
4 | 5.6 | 8.4 |
5 | 7.0 | 10.5 |
6 | 8.4 | 12.6 |
8 | 11.2 | 16.8 |
10 | 14.0 | 21.0 |
M = Mode factor which must be applied to the WLL of the sewn webbing component. In the case of multi-leg sling assemblies, the slings used to form the assembly must be identical and the mode factor is applied to the WLL of an individual leg.