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Extension ladder or "telescopic ladder", a fixed ladder divided into two or more lengths for more convenient storage; the lengths can be slid together for storage or slid apart to expand the length of the ladder; a pulley system may be fitted so that the ladder can be easily extended by an operator on the ground then locked in place using the ...
Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state. [1] In modern equipment this can be achieved by a hydraulics , but pulleys are generally used for simpler designs such as extendable ladders and amateur ...
An attic ladder (US) ... Folding ladders are usually found in lengths between 8 and 16 feet (2.4 and 4.9 m), while the greatest length is usually 10 feet (3.0 m ...
This means that if there is a 4" (100 mm) gutter projecting from the side of a building, a fixed ladder would have to have standoff brackets that were at least 11" (7" + 4") (280 mm) in length. Cages: Cages are optional for fixed ladders with a floor to floor elevation of less than 20' (6100 mm). They are often available for ladders with ...
In the case of a yacht, the choice of the most suitable type of boarding ladder will depend on the size of the yacht, the space available on the dock, etc. [11] There are different types of boarding stairs: [12] Telescopic boarding stairs: These ladders extend and retract as needed. They are ideal for yachts with different deck heights.
The key functions of a turntable ladder are allowing access or egress of firefighters and fire victims at height, providing a high-level water point for firefighting (elevated master stream), and providing a platform from which tasks such as ventilation or overhaul can be executed. To increase its length and reach, the ladder is often telescoping.