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The committee's report was printed in 1888 and recommended a drop energy of 1,260 foot-pounds force (1,710 J). In April 1892, the Home Office revised this based on an energy of 840 foot-pounds force (1,140 J). In practice, however, the hangmen ignored this table and used considerably longer drops.
In Scotland, the caber is usually made from a larch tree, and it can be between 16–20 feet (5–6 metres) tall and weigh 90–150 pounds (40–70 kilograms). [1] [2] The term "caber" derives from the Gaelic word cabar, which refers to a wooden beam. [1] The person tossing the caber is called a "tosser" or a "thrower". [3]
The recommended weight roughly corresponds to a flex rating that is determined by the manufacturer by applying a standardized amount of stress (most commonly a 50 lb (23 kg) weight) on the pole and measuring how much the center of the pole is displaced. Therefore, two poles rated at the same weight are not necessarily the same stiffness.
Engineered lumber can be cut to length and installed much like sawn lumber; the flitch requires shop fabrication and/or field bolting. This, coupled with a much increased self-weight of the beam (11.4 pounds (5.2 kg) for engineered wood vs. 25.2 pounds (11.4 kg) for a flitch beam), decreases the viability of the system.
Poles for pleasure punts are normally made of spruce wood or aluminium alloy tube. A normal pole is about 12–16 feet (3.7–4.9 metres) long and weighs about 10 lb (5 kg). In both Oxford and Cambridge, long 16 ft (4.9 m) poles tend to be used exclusively.
Security maintenance for men working on wooden poles lines. The Polux technology was developed in the early 90s by Professor Jean-Luc Sandoz , following on from the Sylvatest , at the initial request of EDF , which had the dual problem of the safety and lifespan of their poles. [ 5 ]