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The "Washington Upright Poles" are the most decorative, and are designated the 14, 16, 18, 716, and Twin-20. [a] The Number 16 pole (which cost $5,000 in 2013) is the most commonly used Upright Pole. The 716 is a less expensive ($2,500 in 2013) version of the 16 pole. The slightly more decorative 18 pole is generally used only in the downtown area.
The first American towers were 100 ft (30 m) tall with a fixed-in-place lighting system that could not be lowered. A later project in 1968 featured a 150 ft (46 m) fixed-lighting tower on the Texas-Arkansas state line with two other 100 ft (30 m) fixed-lighting towers on either side of the state-border.
On 15 November 2006 Saimaiti Yiming of China took 10 steps on 16.41 m-high (53.8 ft) stilts to break the Guinness World Record for walking on the tallest stilts. [ 17 ] In 2008 Roy Maloy of Australia took five steps on stilts 17 m (56 ft) high, an unofficial record for the tallest stilts.
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The standard utility pole in the United States is about 35 ft (10 m) tall and is buried about 6 ft (2 m) in the ground. [5] In order to meet clearance regulations, poles can, however, reach heights of at least 120 feet (40 meters).
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The poles carry supply voltages from 240 to 275,000 volts and come in various sizes from 9–26 m (30–85 ft) in length, though studies indicate heights to 36 m (118 ft) are feasible. [6] The service life of a Stobie pole is predicted to be in excess of 80 years. It is now commonly regarded as a South Australian icon. [5] [7]
The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.