Richard Delaney Archive
Roping and rigging equipment compatibility. Industrial round slings are normally used to connect a load or anchor to rigging equipment via shackles. There seems to be an increasing tendency to use these round slings for rope based
Three-way loading of carabiners. This issue is often presented as black-and-white and is rarely given much consideration. Most users know that manufacturers warn against certain loadings but what does this really mean? Carabiner manufacturers show that is
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
We are seeing an interesting collision of techniques: Standard triangular pyramid tripods used for confined space rescue, Asymmetrical multi-pods used for technical rope rescue and rope access, and Powered winches. Confined space operators have long been using
