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Rope safety factor, ratio between the rope's breaking strength and the maximum load to be expected; Allowable number of broken strands before replacement; Optimal rope diameter for a given sheave diameter, so as to obtain best working life; The calculation of the rope drive limits depends on: Data of the used wire rope; Rope tensile force S
Rigid barriers such as concrete and semi-rigid barriers such as steel guardrail, exhibit impact deflections of 0 to 4 ft (1.2 metres), respectively. [1] Flexible systems such as cable barriers deflect between 8 and 12 ft (2.4 and 3.7 metres) upon impact.
Staircase railings in the Degré du roi, part of the Petit appartement du roi, in the Palace of Versailles, Versailles, France. Guard rails, guardrails, railings or protective guarding, [1] in general, are a boundary feature and may be a means to prevent or deter access to dangerous or off-limits areas while allowing light and visibility in a greater way than a fence.
The timber hitch is a knot used to attach a single length of rope to a cylindrical object. Secure while tension is maintained, it is easily untied even after heavy loading. [1] [2] [3] The timber hitch is a very old knot. It is first known to have been mentioned in a nautical source c. 1625 [4] and illustrated in 1762. [1]
A guy-wire, guy-line, guy-rope, down guy, or stay, also called simply a guy, is a tensioned cable designed to add stability to a freestanding structure. They are used commonly for ship masts , radio masts , wind turbines , utility poles , and tents .
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Rope access technicians descend, ascend, and traverse ropes for access and work while suspended by their harnesses. Sometimes a work seat may be used. Sometimes a work seat may be used. The support of the rope is intended to eliminate the likelihood of a fall altogether, but a backup fall arrest system ( Personal protective equipment ) is used ...
Gel-Nimbus 25. With soft, cloud-like gel cushioning in the midsole, the Asics Gel-Nimbus 25 shoes have the stamp of approval from Anne Sharkey, D.P.M., a podiatrist at North Austin Foot & Ankle ...
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