- Marty John
3 Things to Know About Flat Rack Lashing
When you’re shipping large machines or vehicles, closed containers are often too small. In such cases, flat racks are the more preferred mode of transportation. Flat racks open from the two lengthier sides and the top or from all 4 sides and are designed to carry bulky, over-sized cargo. A 40’ flat rack can carry cargo weighing as much as 45 metric tons. That said, unless you adhere to flat rack lashing norms, the cargo could be at risk of damage. So, here’s what you need to keep in mind.
Position Cargo in The Center
When you load cargo onto a flat rack, you must position it carefully. Ideally, it should be centered to the flat rack’s center of gravity along the length and width of the flat rack. The strength of the flat racks lies in the bottom rails. Thus, the cargo must be positioned such that the weight rests on these two rails. Alternatively, cross timbers may be used to transfer the weight to these bottom rails. The maximum weight a flat rack can take is typically mentioned on the flat rack. This must be adhered to strictly. However, it is important to note that flat racks can be loaded to their maximum weight capacity only when the cargo is distributed along the entire length and width of the bottom rails.
Use Bedding
Heavy weight cargo cannot be placed directly on the wooden floor of a flat rack. Instead, you will need bedding to buffer the weight. This must be laid across the length and width of the flat rack and reach the main girders. Any type of metal to metal contact should be avoided when setting up a flat rack lashing system. You could place wood dunnage or rubber anti-slip material between the cargo and the bottom rails of the flat rack. Choosing a high friction material also reduces the lashing required.
Lash The Cargo Securely in Place
Though the cargo may be very heavy and look like it won’t move, it must be lashed securely in place with appropriate materials. When choosing lashing materials, you should keep in mind the size, weight and construction of the load. When using web lashing, use extra protection on the edges. Do not mix lashing materials such as web lashings and wires for lashings in the same direction. Also, make sure all shackles and turnbuckles are secure so that they do not have any risk of spinning open. As a rule of thumb, the number of lashings used on each side of the cargo when multiplied by the maximum securing load must be higher than the cargo weight. When cargo is crated, timber bracing is most popular.
When it comes to flat rack lashing, if you’re not careful, the load could slip and you may lose your cargo. It would be more expensive to replace damaged cargo than pay for proper lashing. Hence, it is essential to always use the right materials and techniques. As far as possible, work with professionals who have experience with this type of lashing.
