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Anchor channels, invented by Anders Jordahl in 1913, are steel channels cast flush in reinforced concrete elements to allow the installation of channel bolts for the fastening of components. Anchor channels consist of steel C-shaped channels and anchors (mostly headed studs ) which are connected to the channel by welding or riveting/forging.
The carrick bend, also called full carrick bend, sailor's knot, and anchor bend, is perhaps the nearest thing we have to a perfect bend. It is symmetrical, it is easy to tie, it does not slip easily in wet material, it is among the strongest of knots, it cannot jam and is readily untied.
Despite questions about this knot's security, it does present some advantages for use in rappels. Because the knot is offset from the axis of tension, it can translate more easily over uneven surfaces and 90 degree edges than other knots; and it is quickly tied and readily untied. Since a stuck rope on a multi-pitch descent can be catastrophic ...
Weaver at Queen Street Mill demonstrating a weaver's knot Steps in tying a weaver's knot. The sheet bend may be tied by various methods: the basic "rabbit through the hole" method of forming a half hitch in the bight of the larger rope, by a more expedient method shown in Ashley as ABoK #1431 (similar to the method used by an experienced sailor or mountaineer to tie a bowline) or by a trick ...
Mechanical rebar connections, also known as mechanical splices or mechanical coupler, are used to join lengths of rebar together to transfer forces from one steel rebar to another. [ 1 ] [ 2 ] Rebar coupler
Tying an overhand knot. There are a number of ways to tie the Overhand knot. Thumb method – create a loop and push the working end through the loop with your thumb. Overhand method – create a bight, by twisting the hand over at the wrist and sticking your hand in the hole, pinch the working end with your fingers and pull through the loop.
The Knot Bible: The Complete Guide to Knots and Their Uses, page 143. A & C Black. ISBN 9781408155875. Budworth, Geoffrey (2012). The Knot Book Hachette UK. ISBN 9780716023159. Finazzo, Scott (2016). Prepper's Guide to Knots: The 100 Most Useful Tying Techniques for Surviving any Disaster, page 117, Ulysses Press. ISBN 9781612436302.
Friction knots are held in place by the friction between the windings of line. Knotted-ends knots are held in place by the two ends of the line being knotted together. Stopping may be either a temporary whipping or seizing, the commonest variety consisting of a few round turns finished off with a reef knot .