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TRANSPORTING SOLID STEEL: HOW CAN YOU SECURE YOUR CARGO SAFELY?

CALCULATING THE NUMBER OF LASHINGS FOR SECURING CARGO PROPERLY

Last weekend, transport online posted an article about a truck which was fined by the German police due to the cargo being poorly secured. The trailer was loaded up to the roof with solid steel components. 10 9-metre long components weighing 2.1 tons each and 9 components weighing 500 kilos were secured using just 7 lashings. Those lashings were also worn and no longer suitable for securing cargo safely. According to the German police, at least 55 lashings should have been used. But is that really the case?

In this article:

Calculating lashings

  • Solution 1: Securing cargo using lashings
  • Solution 2: Securing cargo using lashings and anti-slip mats
  • Other cargo securing solutions
  • European legislation on cargo securing
  • App: calculate how many lashings you need

The Transport Online article gave rise to a whole discussion on the number of lashings to use. The reactions show that a lot of people consider it ludicrous that the cargo securing control measures carried out in Germany are so strict. “Only those crazy Germans could require 55 lashings.” But is 55 really such a crazy number of lashings? And is this only mandatory in Germany or does it also apply in the Netherlands? We asked our cargo securing specialist Niels Bouwmeester what the actual requirements are according to European guidelines.

NIELS BOUWMEESTER

NIELS BOUWMEESTER

CARGO SECURING SPECIALIST

“I am surprised at the opinions expressed during this discussion. There is a reason for these strict cargo securing rules. Every year, thousands of accidents – and all the ensuing consequences – are caused by cargo not being secured properly. The penalties may not be very high but transshipment and re-securing also costs time and money. Besides, the reason you secure cargo is not to avoid penalties: the main reason for securing cargo is to improve safety! No-one wants to have an accident on their conscience, do they?”

“Unfortunately, incidents of this type are quite common. I come across poorly secured cargo on the road on a daily basis. In fact, 70% of the cargo on the roads in the Netherlands has been secured poorly or incorrectly. Often it’s down to ignorance, people think that a few lashings will keep the cargo secure. Nothing could be further from the truth. So the rules are there for a reason. A carrier should secure 80% of the cargo to the front, 50% to the side and 50% to the back,” says Bouwmeester.

CALCULATING THE NUMBER OF LASHINGS

Niels: “If I take this specific example of steel components and carry out a calculation (based on the formula for lashings), then a transport unit (CODE L) where the cargo is not placed against the front wall does indeed require 54 lashings. See solution 1.

Another possibility is to use anti-slip mats. If you use anti-slip mats properly, you will increase the frictional resistance and require considerably fewer lashings. See solution 2.

FORMULA FOR LASHINGS

SOLUTION 1: SECURING CARGO USING LASHINGS

I based this calculation on 25.5 tons of cargo, a Code L transport unit, no loading against the front wall, a friction coefficient of 0.35, an optimum tying angle and use of lashings with an STF value of 375 daN. Securing in the direction of travel is sufficient in this case. It is therefore not necessary to secure the cargo to the side or to the rear.

Securing in the direction of travel

0.8 – 0.35 = 0.45

0.45: 0.35 = 1.28

25500: 2 = 12750

12750 x 1.28 = 16320

16320 x 1.25 = 20400

20400: 375 = 54 lashings

Total number of lashings required = 54 lashings

SOLUTION 2: SECURING CARGO USING LASHINGS AND ANTI-SLIP MATS

I based this calculation on 25.5 tons of cargo, a Code L transport unit, no loading against the front wall, certified anti-slip mats with a friction coefficient of 0.6, an optimum tying angle and use of lashings with an STF value of 375 daN.

Securing in the direction of travel

0.8 – 0.6 = 0.2

0.2: 0.6 = 0.33

25500: 2 = 12750

12750 x 0.33 = 4208

4208 x 1.25 = 5259

5259: 375 = 14 lashings

Securing the cargo in the direction of travel and using the anti-slip mats is sufficient for resisting the forces which will occur. It is therefore not necessary to secure the cargo to the side or to the rear. However, you should make sure that the cargo does not start to move.

Total number of lashings required in conjunction with anti-slip mats = 14 lashings

OTHER CARGO SECURING SOLUTIONS

Niels based the above-mentioned cargo securing solutions on a Code L transport unit where the cargo was not placed against the front wall. However if it was, you can reckon on 40% of the loading capacity. With 30% to the side and 25% to the rear. As a result, you will require fewer lashings. In this case, you cannot load the cargo against the sides because the vehicle is a curtainsider.

If you are using an XL certified transport unit and the cargo is placed against the front wall, you can reckon on 50% of the loading capacity. With 40% to the side and 30% to the rear. In this case, we don’t know the loading capacity for an XL calculation: this will depend on the vehicle data.

These values only apply to form-fit loading. With a maximum permissible gap of 8 cm.

Code L transport unit

Front wall 40% of the loading capacity

(max. 5000 daN)

Side walls 30% of the loading capacity

(0% in the case of a curtainsider)

Rear wall 25% of the loading capacity

Code XL transport unit

Front wall 50% of the loading capacity

Side walls 40% of the loading capacity

Rear wall 30% of the loading capacity

EUROPEAN LEGISLATION ON CARGO SECURING

So there are plenty of options for securing the cargo from the example properly. Niels took European legislation as a basis. The requirements differ from country to country.

In order to make cargo securing regulations uniform, the EU has produced a manual on how to secure cargo safely on road vehicles. We have drawn up a handy checklist on cargo securing based on this.

DO YOU HAVE ANY QUESTIONS OR REQUIRE MORE INFORMATION ON CARGO SECURING?

Should you have any further questions after reading this article or require advice on cargo securing, then contact Niels Bouwmeester on +31 (0)6 53 32 95 23. He will be happy to help you. See also our page on cargo securing for more information.

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