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This article goes beyond the standard rule-of-thumb “90° puts 141% on the redirect anchor”. If we have a suspended load with a 90º redirection through an aluminium carabiner then we can calculate the effects of friction through
Scientific notation & standard units The standard ‘shorthand’ for scientific notation involves abbreviating numbers to the nearest division of 1,000. The metre (m) is the standard metric unit of length. This ‘m’ will often have another letter
Rope grabs: when will they slip? There are many rope grabs used by technicians including: Personal ascenders Attachment devices for raising people and loads Attachment devices for positioning people and loads Just how much can each of
Auto locking belay devices: when will the rope slip? There are many auto-locking devices used by technicians as: Personal descenders Anchored devices for lowering loads Anchored devices to hold tension while raising loads Just how much can
The Skate Block is an excellent low-force technique for lowering and raising. The analysis of the Skate Block is a great example of the application of physics and this enables us to determine where the load should
