Calculation example based on practical case 1 Cargo Securing Calculation example based on practical case 1

Calculation Tools There are various calculation tools available. This example illustrates how to determine the number of lashings required to safely secure a load, based on 2 calculation tools: Quick Lashing Guide Quick Calculation Charts

1. Quick Lashing Guide Availability Appendix 2 of the EUROPEAN BEST PRACTICES GUIDELINES ON CARGO SECURING FOR ROAD TRANSPORT Annex 3 of the International Guidelines on Safe Load Securing for Road Transport App for iOS and Android devices (search for keyword “Securing Cargo TYA”) Printed version (can be ordered on TYA’s website)

1. Quick Lashing Guide The values in the Quick Lashing Guide are based on the following assumptions: Lashing points resist 2000 daN Webbings have a Lashing Capacity (LC) of 1600 daN Webbings have an STF of 400 daN Lashing angles are between 75 and 90 If values are different, the results must be adjusted by a multiplication factor (indicated in the guide).

Input Required – Part 1 Check if the load restraint system meets the default values of the Quick Lashing Guide, i.e. for top-over lashing: check that STF = 400 check that angle is between 75 and 90 In this case, both conditions are met, so no multiplication factor is required.

Input Required – Part 2 Cargo weight Friction coefficient

Friction Coefficient

The cargo is not blocked forwards The friction coefficient is 0.3 Calculation – Step 1 The cargo is not blocked forwards The friction coefficient is 0.3 1 lashing secures 0.38 tons

Calculation – Step 2 Cargo weight front block: 6 tons 1 lashing secures 0.38 tons X lashings secure 6 tons X = 6 / 0.38 = 15.8 = 16 lashings required Cargo weight rear block: 7 tons Y lashings secure 6 tons Y = 7 / 0.38 = 18.4 = 19 lashings required

2. Quick Calculation Charts Availability Available from AD Formation Notes Multiple charts cover a variety of load mass and lashing strength combinations, so there is no need to calculate any multiplication factor

16 lashings secure the load Front block 16 lashings secure the load

19 lashings secure the load Rear block 19 lashings secure the load

Other calculation tools SpanSet App Excel calculator (available to IRU Academy Accredited Training Institutes, in English, Russian and French)