Rethreaded Alpine Butterfly Knot
The re-threaded Alpine Butterfly knot is a very useful in-line, low-gain knot for direct tie-ins to closed objects.
Monthly Archive:: December 2014
Members: Impact Forces During Factor One Falls
People often ask what peak impact force can be generated during falls. Impact force depends largely on the mass and velocity of the object at impact and how quickly the object stops. Put simply, the faster something
Carabiner Specifications
There is a standard language used in the technical specifications of carabiners but this is not well understood. This article is an attempt to clarify some common markings that appear on carabiners. It should be noted that
Members: Right and Wrong Figure-of-8 Knot
There have often been discussions about the so called “right” and “wrong” ways to tie a figure-of-8 knot and they seem to focus on whether the strand being loaded is on the “inside” or “outside” of the
Members: Rope Protection and Falls
It is common for rope technicians to work with two ropes. The secondary rope serves as fall protection if the primary rope is severed. This initiates a sudden load over contact points and places significant forces on