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In most states, the residential code is 36 inches high. There are some exceptions, though, like in California [3] the required height for residential railing is 42 inches. On the other hand, the commercial International Building Code requires the railing to be at a minimum of 42-inch height. Posts can be floor-mounted or fascia/side-mounted ...
Some cable ferries use a wire rope on the upstream side in order to hold the position and a chain on the downstream side for propulsion. A special type are electrically powered overhead-cable ferries like Straussee Ferry , which have an onboard propulsion unit and can float free, but are connected to the overhead wire for the power supply ...
When not being used, the ladder is stowed away, usually rolled up, rather than left hanging. On late 19th-century warships, this kind of ladder would replace the normal fixed ladders on deck during battle. Fixes ladders, and railings, would be removed and replaced with Jacob's ladders and ropes in preparation for battle.
These rope bridges must be renewed periodically owing to the limited lifetime of the materials, and rope components are made by families as contributions to a community endeavor. Simple suspension bridges, for use by pedestrians and livestock, are still constructed, based on the ancient Inca rope bridge but using wire rope and sometimes steel ...
It is a large strong rope, wire or rod extending from the upper end of each mast and running down towards the deck of the vessel in a midships fore-and-aft direction. The shrouds serve a similar function but extend on each side of the mast and provide support in the athwartships direction.
Diagram 3 shows three rope parts supporting the load W, which means the tension in the rope is W/3. Thus, the mechanical advantage is three-to-one. Thus, the mechanical advantage is three-to-one. By adding a pulley to the fixed block of a gun tackle the direction of the pulling force is reversed though the mechanical advantage remains the same ...
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An optional final stage for the permanent protection of "served" rope is to paint the outer layer of twine with a mixture of tar, varnish and black paint. This needs renewing periodically, and going aloft to paint footropes , shrouds , stays , and other served rigging is one of the regular maintenance tasks on many tall ships .