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

2. 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

3. 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)

4. 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).

5. 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.

6. Input Required – Part 2
Cargo weight
Friction coefficient

7. Friction Coefficient

8. 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

9. 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

10. 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

11. 16 lashings secure the load
Front block
16 lashings secure the load

12. 19 lashings secure the load
Rear block
19 lashings secure the load

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