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Campus boards can take a variety of different forms and may incorporate a variety of materials. The earliest campus boards, still used today, were made of horizontal thin slats or wood rails attached to an inclined board in a ladder-like configuration. Later versions have utilized bolt-on climbing holds or sections of a pipe. A campus board is ...
In rock climbing, an overhang is a type of route that leans back at an angle of over 90 degrees for part or all of the climb, and at its most severe can be a horizontal roof. Overhang (and roof) climbs have existed throughout climbing, originally in aid climbing where mechanical devices were used to first scale them.
Overhang on 16th century Tomb of Salim Chishti, Fatehpur Sikri, India In architecture , an overhang is a protruding structure that may provide protection for lower levels. Overhangs on two sides of Pennsylvania Dutch barns protect doors, windows, and other lower-level structures.
Aside from a multitude of indoor uses in factories, suspended railways are also used for number of outdoor applications other than passenger transportation. In the 1920s the Port of Hamburg used a petrol powered, suspended monorail to transport luggage and freight from ocean-going vessels to a passenger depot.
90-foot (27.43 m) radii on the elevated 4 ft 8 + 1 ⁄ 2 in (1,435 mm) standard gauge Chicago 'L'. There is no room for longer radii at this cross junction in the northwest corner of the Loop . The minimum railway curve radius is the shortest allowable design radius for the centerline of railway tracks under a particular set of conditions.
Awnings were first used by the ancient Egyptian and Syrian civilizations. They are described as "woven mats" that shaded market stalls and homes. A Roman poet Lucretius, in 50 BC, said "Linen-awning, stretched, over mighty theatres, gives forth at times, a cracking roar, when much 'tis beaten about, betwixt the poles and cross-beams".