(This would be a voiceover reading the text with a combination of images from the LRG and other photos or videos) There are a range of loads which are not capable of being tied down. These include loose bulk loads such as sand, soil, quarry or mining products, grains and fertilisers which are typically carried in a tipper which may be covered with a tarpaulin or a load net.
Image of grain being loaded into a tipper (there was a stock image in HV101 that would work)
In these cases, the load is contained by the body forwards-backwards and side to side, but is not constrained vertically. In these cases, it is important to consider the height of the sides of the vehicle and the capacity of the tarpaulin or load restraint nets to ensure the load is fully constrained.
It is also important to consider movement within the body as a shift in the load may impact on the stability of the vehicle.
It may be possible to use other material to assist in managing sideways movements. (see also Lesson 3.2.5 on dunnage)
For fine powdery materials such as cement or for liquids the load needs to be fully contained and can be carried using
Image of dry bulk tanker from Convair