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The locks comprise seven gates in four chambers which lift up to 50 feet (15 m) elevation change (depending on tides and river flow) with a usable width of 37 feet (11 m). The system is 3,565 feet (1,087 m) long, and can accommodate vessels up to 75 feet (23 m) long. Each of the four concrete constructed chambers are 210 by 40 feet (64 by 12 m).
Manual gates are sometimes hung in the manner of a normal gate (i.e. hinged horizontally). In some places, bar gates are installed across suburban streets as a traffic calming measure, preventing through traffic, while allowing authorised vehicles such as emergency services and buses to take advantage of the shorter and more direct route.
These gates range from 47 to 82 ft (14.33 to 24.99 m) high, depending on position, and are 7 ft (2.13 m) thick. The tallest gates are at Miraflores, due to the large tidal range there. The heaviest leaves weigh 662 t (730 short tons; 652 long tons); the hinges themselves each weigh 16.7 t (36,817 lb). Each gate has two leaves, 65 ft (19.81 m ...
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The steel gates consist of a male element (3 metres (9.8 ft) high and weighing 10 tonnes (9.8 long tons; 11 short tons)) connected to the gate, a female element (1.5 metres (4 ft 11 in) high and weighing 25 tonnes (25 long tons; 28 short tons)) fastened to the housing structure and an attachment assembly to connect the male and female elements.
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When completed, the Union Carbide Building had a gross floor area of 1.5 × 10 ^ 6 sq ft (140,000 m 2), though the rentable floor area was only 1.16 × 10 ^ 6 sq ft (108,000 m 2). [4] Each floor of the tower on Park Avenue covered 17,500 sq ft (1,630 m 2 ), while each floor in the Madison Avenue annex covered 37,500 sq ft (3,480 m 2 ).
Architecturally, a catenary arch has the ability to withstand the weight of the material from which it is constructed, without collapsing. [4] [5] For an arch of uniform density and thickness, supporting only its own weight, the catenary is the ideal curve.
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