The nominal strength of a cargo lashing equipment is calculated by calculating the metal parts’ safety factor 1.4 of their breaking strength. For textile parts, the safety factor is 2.0. For example, when the breaking strength of a lashing binder and hooks is 5000kg and the breaking strength of strap is 4000 kg, the nominal strength according to the lashing’s weaker link i.e. according to the strap, i.e. 4000kg/ 2.0. Thus, the nominal strength is 2000kg.
If the breaking strength of the strap was 7000kg, the nominal strength of the lashing would be 3500kg. The nominal strength of metal parts is 5000 kg / 1.4, i.e. 3571kg.
On other parts of the EU region, a so-called LASHING CAPACITY is in effect.
It is calculated with metal parts’ safety factor 2.0 and that of textile parts 3.0. Then, the LC value with, for example, 2000kg nominal strength lashing is 1700kg, which is expressed in Dekanewton, i.e. 1700 daN. The LC value of a lashing with a nominal strength of 3500kg in Indonesia, is only 2500kg or 2500daN.
Other lashing regulations are the same, meaning that the cargo must be secured in a way that it endures the whole weight of the load forward and half of the load weight on the sides and backward. The friction coefficient of the load and pallet may be taken into account in the calculation.