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A Dutch sand ladder is a cable or rope ladder with rungs usually made of wood, lying on a sandy slope to allow persons to ascend or descend with minimal erosion. [1] The bottom end is anchored and the top end is designed for easy disconnection so that the ladder can be lifted up to shake loose any sand that has accumulated on the rungs. [ 1 ]
Whether rope lifts of this sort were widely used, either for goods or to lift people, is not clear. In the more recent castle science literature the rope lift is rarely seen as a method of reaching an elevated entrance. [3] In the 19th century, August Essenwein saw the rope lift as a common entry system. For example, in his numerous artist's ...
The battery was initially built in 1943 to house six captured French First World War vintage GPF 155 mm K418(f) guns positioned in open concrete gun pits. The battery was garrisoned by the 2nd Battery of Army Coastal Artillery Battalion 1260 (Heeres-Küsten-Artillerie-Abteilung 1260 or 2/HKAA.1260). [4]
An extension ladder. A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top.
Some climbers will use a single full-thickness climbing rope with a diameter of approximately 9 to 11 mm (0.35 to 0.43 in), and some will use double ropes, or "half-ropes", to reduce rope drag (e.g. one rope is clipped into any given anchor or protection point), which have a reduced thickness of approximately 8 to 9 mm (0.31 to 0.35 in) to ...
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A man using a Bachar ladder. The Bachar ladder is a form of rope or metal ladder used as a training device by rock climbers to improve upper body strength. [1]Named after noted free soloist John Bachar, [2] Bachar ladders typically consist of PVC rungs joined by webbing or cord to create an unstable structure similar to the ratlines of a sailing ship.
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