The Cargo-Lashing Expert

How to cope with fragile cargo

How to cope with fragile cargo

Cargo securing for the economically minded

This is post number 24 in a series of cargo securing advice and useful hints. These are meant for people who think economically. They do not like to waste time, muscle power, risk their health or pay fines.

What causes the cargo to crush? – too high surface pressure on a small area caused by the lashing force and cargo movement. How to avoid that? — provide a larger area for the same force so the pressure gets lower.

Surface pressure can be very high as the pre-tensioning force together with cargo movements are dealt by the area securing device is in contact with the cargo. Over a box, roll or octabin the contact area is only some centimeters and 5 cm wide if a strap is used. Over a sac or a bigbag the distance is longer, but also the cargo is softer. Using a wider device, e.g. 40cm or 80cm wide, the pressure drops to 1/8 resp. 1/16 of what it is with a strap. Then the pre-tensioning force can easily be raised to effective levels in top-over lashing.

 

 

 

 

800mm wide tarpaulin no damage at 300daN

 

This is how you cope with fragile cargo!

 

Drive safely,

Cargo Lashing Expert

Kimmo