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Due to the excessive load requirements [2] of this type of railing system, post construction is critical to the success of cable railings. Cable railing requires very rigid frames compared to many other types of railings due to the forces applied to the end posts by tensioning the cables. Cables must be tensioned to provide minimum cable ...
The typical deck railing is generally built from pressure treated lumber. [14] Posts on a deck are also typically pressure treated wood and standard sizes are 4x4, 6x6, and 8x8. These posts give structural support to the railing assembly and are the most critical part for the safety of the guard rail assembly. [ 15 ]
A major problem alleged, that reduces the effectiveness of cable barriers, is the installation below grade, especially around slopes or dips. [9] Without any compensation for a slope in the median, a car can actually jump the top of a barrier, and therefore be exposed to a potential cross-over collision.
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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.
A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.
This eliminated the danger of ambiguous or conflicting instructions being given because token systems rely on objects to give authority, rather than verbal or written instructions; whereas it is very difficult to completely prevent conflicting orders being given, it is relatively simple to prevent conflicting tokens being handed out.
On a suspension bridge of the more usual earth-anchored type, both of the primary (i.e., horizontal) cable's anchorages exist prior to construction in the form of solid terrain. In the self-anchored suspension bridge, however, the cable must be anchored to the bridge deck, which has yet to be built and will not bear its own weight; ergo ...
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