Episode 34: Head Flashing & Cross Lashing - Application and Possible Uses
If you carefully overtake trucks with open loading areas on the highways, you will mainly see the tie-down method.
This is the method that most drivers and shippers are familiar with, but it is also the method that is often not efficient or sufficient.
Of course, you can't see what's hidden under the tarpaulins.
About the author:
In a series of specialist articles from the field, on topics relating to containers and trucks, you will receive first-hand professional knowledge.
How to secure cargo correctly and what are the basics of cargo securing?
They are developed and presented by Sigurd Ehringer, owner of SE-LogCon:
- VDI certified instructor for load securing
- Reference book author
- 8 years Project Manager
- 12 years with the Bundeswehr (company commander)
- 20 years of sales experience
- since 1996 consultant/trainer in logistics
- 44 years instructor/trainer in various fields
Episode 34: Head lashing & cross lashing - application and possible uses
An effective but little-known method among drivers/shippers is head lashing or cross lashing.
However, head flashing is beginning to catch on in certain sectors. Mostly where trucks tend to be too heavy rather than full.
Both methods belong to the form-fit spectrum of securing methods.
There are three main differences to tie-down lashing:
1. the LC (lashing capacity) of the securing devices is used
2. the securing force only becomes effective when the load wants to move.
3. the LC is not reduced by the friction
The application of head flashing is simpler, which is why my description begins with it.
The head flashing
With the usual standard lashing straps, the head lashing can only be used with a tarpaulin body or hamburger top.
This is not possible with box bodies because in many cases they have no lashing points on the floor and because the 50 cm fixed end of the strap is too short.
The ratchet is clamped between the load and the side wall. An adapter piece, e.g. a short loose end with hook and eye, would be the solution.
Head flashing is the order of the day if the truck is not completely full.
This means that the distance to the rear portal is greater than 15 cm.
To keep the belt in position, two or three pallets are placed upright against the load, depending on the situation. The pallet feet to the rear.
The pallets should also distribute the force of the belts over one surface. To ensure that the middle pallet receives pressure from the belt tension, the belt should run past the outside.
Attach the strap(s) in such a way that the lashing angle α is always less than 45°.
If greater securing forces are required, a second belt can be attached.
Head lashing is also well suited to securing the load in the direction of travel against pre-loading.
The front load is often not stable enough to stow positively against it.
In this case, it is important to keep a small distance from the preload so that movement within the scope of the belt elongation remains uncritical.
The possible securing force essentially depends on the LC of the lashing points.
If a belt with an LC of 2,000daN is used, a securing force of 2×2,000daN can be expected.
The frictional force should not be taken into account in the rough calculation; this is the reserve force for inaccuracies or for the loss of force due to the lashing angle.
If a belt with an LC of 2,500daN is used, only the LC of the lashing points may be used, unless it can be proven that they hold more.
The weakest link in the safety chain must always be observed.
The cross lashing
Cross lashing is a method that has a similar effect to head flashing.
However, this requires dimensionally stable load units. This method is not suitable for small load units.
This method is a good solution for industries that load pallet cages.
With pallet cages, it is important to attach the straps before the last row of loads is loaded.
The belts are then routed crosswise upwards, over the upper corners of the pallet cage and back to the loading area.
In order to achieve the flattest possible lashing angle, the belt length should be utilized as far as possible.
The optimum effect is achieved when the pallet cages are only stowed in a single layer.
As many drivers have little experience with these methods and therefore often reject them and want to lash them down, it makes sense for shippers to draw up loading instructions with pictures.
This makes it easier to convince drivers. In general, the language barrier between driver and loader makes it necessary to work with images.
It is best if the individual phases are presented step by step. Print out these instructions, laminate them and have them ready at the forklift.
This approach has proven itself in practice.
Your Sigurd Ehringer.
Good load securing is so much more than just classic lashing. With just a little more effort, the shipper can create much more efficient and safer restraint systems. Just give it a try 😉
On our own account:
Rothschenk. That's us.
Rothschenk is a manufacturer of load securing equipment for overseas containers. In the tranquil town of Aub in central Franconia, we develop, test and sell our own load securing equipment such as dunnage bags/padding, Lashing restraint systems, Edge Protectors, Anti-slip Mats, Lashing Straps and drum securement. You can get a small insight into our product world in our Online Shop: [R] SHOP24.
We develop for our customers, to whom also large corporations e.g. from the CHEMICALS-, BEVERAGES- and Automotive industry belong, individual load securing. Therefore we are used to come up with new products and solutions in our own research and test department.
We stand for quality "Made in Germany„. Not only in development, but also in production. Because we are the only manufacturer for load securing with our own production site in Germany. Real "Made in Germany" even.
>> Please use the comment function below for suggestions, additions and also for further questions.
We will, of course, respond promptly and professionally. Your Rothschenk Team
Supplement to the article:
Cross and head flashing: the difference
Load securing is an important part of road transportation. It is used to protect the load from slipping, rolling or tipping over during transportation. One frequently used method of load securing is lashing.
Lashing involves the use of lashing straps or other securing devices to fix the load. There are different types of lashing, including cross lashing and head lashing.
Headlashing
Head lashing is a form-fitting load securing method. This means that the load is secured directly to the loading surface by the lashing.
In head lashing, a lashing strap is placed around the top edge of the load and then lashed to the loading surface. The lashing strap should be pulled tight enough that the load is securely fastened, but not so tight that it is damaged.
Cross lashing
Cross lashing is a form-fit load securing method. This means that the load is held in position by the lashing by transferring the force of the lashing strap via the load to the loading surface.
With cross lashing, two lashing straps are used, which are laid in a cross over the load. The lashing straps are then lashed to the loading area. Cross lashing is particularly suitable for loads that cannot be positively secured to the front wall of the transport vehicle.
Difference between cross and head flashing
Head lashing and cross lashing are both effective methods of securing loads. The main difference between the two methods lies in the way the belts are guided.
Head lashing is a form-fitting load securing method in which the load is secured directly to the loading surface of the transport vehicle. Cross lashing is a form-fitting load securing method in which the load is held in position by the force of the lashing strap.
Head lashing is particularly suitable for loads that cannot be positively secured to the front wall or rear portal of the transport vehicle. Cross lashing is particularly suitable for loads that cannot be positively secured to the front wall or rear portal of the transport vehicle.
Conclusion
Head lashing and cross lashing are both effective methods of load securing. The choice of the right method depends on the characteristics of the load and the local conditions.
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