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GRAND CANYON WEST FULL TOUR WITH SKYWALK AND GUANO POINT - AMAZING VIEWS

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STEVIES WORLD UK

STEVIES WORLD UK

Күн бұрын

The Grand Canyon Skywalk is a horseshoe-shaped cantilever bridge with a glass walkway at Eagle Point in Arizona near the Colorado River, on the edge of a side canyon in the Grand Canyon West area of the main canyon. It opened as a tourist attraction in 2007, located outside the boundaries of the Grand Canyon National Park.
USGS topographic maps indicate the Skywalk's elevation as 4,770 ft (1,450 m) above sea level. The elevation of the Colorado River at the base of the canyon below is 1,160 ft (350 m). The vertical drop directly below the skywalk is 500 to 800 feet (150 to 240 m). The attraction is immediately north of Grand Canyon West Airport and about 75 miles (121 km) east of Las Vegas, Nevada, although nearly 130 miles (210 km) by car. The nearest city with a population greater than 10,000 people is Kingman, Arizona, about 50 miles (80 km) south.
Commissioned and owned by the Hualapai Indian tribe, the skywalk was unveiled March 20, 2007, and opened to the general public on March 28, 2007. The attraction's operators have reported over one million visitors per year several times, first occurring in 2015
David Jin, an entrepreneur who had been involved with tourism and the Hualapai Nation for some time, had the idea of extending a platform out over the edge of the Grand Canyon. With the help of architect Mark Ross Johnson, that idea evolved into a rectangular walkway and eventually the U-shaped walkway constructed. Executive Construction Management, Las Vegas, NV., was the general contractor for the project, Company Owner and Project Manager, Scott Klempke.
The overall Skywalk width is 65 feet (20 m). The Skywalk length extending out from the post supports closest to the canyon wall is 70 feet (21 m). The outer and inner 32-inch-wide (810 mm) by 72-inch-deep (1,800 mm) bridge box beams are supported by eight 32-by-32-inch (810 mm × 810 mm) box posts having four posts on each side of the visitor's centre, once completed. The eight posts are anchored in pairs into four large concrete footings that are in turn anchored to the bedrock by ninety-six 2+1⁄2-inch-diameter (64 mm) high strength steel threaded rod rock anchors grouted 46 feet (14 m) deep into the rock.
The deck of the Skywalk has been made with four layers of Saint-Gobain Diamant low-iron glass with DuPont Sentry Glass interlayer. Deck width is 10 feet 2 inches (3.10 m). The Skywalk glass sidings were made with the same glass as the deck, but fewer layers (two) bent to follow the walkway's curvature. The glass sidings are 5 feet 2 inches (1.57 m) tall and have been designed for high wind pressures.
The Skywalk deck was designed for a 100-pound-per-square-foot (490 kg/m2) live load along with code-required seismic and wind forces. The foundation can withstand an 8.0 magnitude earthquake within 50 miles (80 km). Fine-tuning of the project occurred after a wind loading and pedestrian induced vibration analysis. Two tuned mass dampers were installed inside the outer box beam as well as one inside the inner box beam at the furthest extension of the Skywalk to reduce pedestrian footfall vibration. The walkway could carry 822 people that weigh 200 pounds (91 kg) each without overstress, but maximum occupancy at one time is 120 people.
The Skywalk was assembled on top of the canyon wall in line with its final placement and moved into final position by a jack and roll rig. The Skywalk infrastructure itself weighs a little over 1,000,000 pounds (450,000 kg) without counterweights but including the tuned mass dampers, railing hardware, glass rails, glass deck and steel box beams. At the time of roll-out, the Skywalk weighed approximately 1.6 million pounds (730,000 kg). The process was completed in two days.
Astronauts Buzz Aldrin and John Herrington attended the opening ceremony on March 20, 2007.
A National Geographic documentary film on the construction of the Skywalk has been published.

Пікірлер: 2
@galaxy98765
@galaxy98765 5 ай бұрын
So glad you got to see the Grand Canyon. The different layers of sediment and rock deposited over the years is so conspicuous. .... and beautiful. Thank you for taking everyone along with you!
@STEVIESWORLDUK
@STEVIESWORLDUK 4 ай бұрын
Thanks Gwen, thanks again for coming along, it was so, so impressive and an awesome sight to say the least.
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