Although hauling systems and the equipment that is used to construct them can vary significantly, the actual principles and purposes of these systems technically remain same.
As in any situation, all the components should undergo a pre-use inspection to eliminate the risk of defective items being included in the hauling system.
Any equipment used in any hauling system should be appropriate in design and adequate in strength for the intended purpose and the potential loadings that will be applied to them; this will also include all anchorages. Equipment should also conform to the relevant national or international standards which differ from region to region.
Also, all equipment that is to be used in the system will need to be compatible with one another; can that belay device be used with that type of rope? Don’t forget to check the manufactures instructions and also carry out research for any product information updates and more importantly any care or recall advisories.
Here are some typical examples of the basic types of equipment that are commonly used to create hauling systems. You will be able to view these items in more detail when the equipment section of this site is developed, until then this is a brief summary;
Excluding the load, the rope is going to be the most significant element in any hauling system. In most setups, the rope’s job will be to both support the weight of the load and to also transfer the input effort applied by the operative(s) back to the load via all of the system’s components.
These days there is a vast array of rope types and models available on the market, each one designed with a specific function in mind. Selecting the correct type of rope for your system and the situation it is to be used in will be a key point of planning. For the purposes of this page and in keeping with the theme of the ropebook site, we are mainly going to focus on the kernmantle type of rope typically used in climbing, caving, rope access and rope rescue.
We are not going to go into depth regarding the different types of rope on this page as further detailed information will soon be available in equipment section. All we need to understand is that the main types of rope we will normally come across will consist of either dynamic rope (such as EN 892) or low-stretch rope (EN 1891).
The design properties and construction of dynamic rope provides it with very good elasticity attributes enabling it to absorb and dissipate the energy applied to it. The inherent stretching of dynamic rope is what allows it to deal with the forces involved when arresting a falling climber.
If we were to opt to utilise a dynamic type rope within a hauling system, its characteristics would result in some loss of energy and therefore the overall mechanical advantage will be affected. When compared to low-stretch or semi-static rope, employing a rope with a reduced stretching ability should result in less energy being lost.