Richard Delaney Archive
The Cats Paw knot is mainly used by anglers but is also occasionally used by riggers to shorten and attach a sling to a hook. The question raised here is whether this knot could be useful for rock
These online calculators have been recreated on the following pages. You can also find them under Reference Items in the Free Content. Converting Units of Weight Converting Units of Distance Converting Units of Temperature
This image shows two possible hauling scenarios each using a Petzl IDs for progress capture. There are several ways to determine the mechanical advantage of this system but it is a good exercise to consider the following
These calculators have been recreated on new pages. They apply the same formulas. Find them through these links, or under Reference Items in the Free Content. Two Point Anchor Calculator Highline Tension Calculator Deviation Anchor Force Calculator
Load Cells have been used for decades to measure tension in many situations however most of the user friendly units, like crane scales, simply monitor relatively static systems. The units used to monitor fast events, like drop tests, have