The iconic 1WTC in New York City features Phillystran high performance cable guys. They support the 400ft antennae on the top of the building, taking the building to a height of 1,776ft and making it the tallest building in the Western Hemisphere.
One of the most challenging, and high- profile projects ever undertaken by Phillystran, the 1WTC is supported by non-metallic, High Performance Tower Guys (HPTG-I). The key technical challenges included the requirement for 8 non- corrosive guy lines just 6” diameter and with 1.7 million pounds break strength.
Designed and manufactured at Phillystran’s factory in Philadelphia, the HPTG-I guy lines are made from stranded aramid fibers with an extruded urethane jacket. The guy lines were supplied as a complete guying system, including corona sockets, together with vibration dampers which reduce aeolian (high frequency) or galloping (low frequency) vibration.
KEY FACTS CABLE GUYS
- 1,762,500 lb Rated Break Strength (7,840kN)
- 8 cable guys: 4 at 90ft (27.4m) and 4 at 88ft (26.8m)
- Largest diameter Phillystran aramid fiber tower guy to date
- 5-7/8in (149mm) diameter; approx 12 lbs per ft (18kg/m)
- Top end Open Corona sockets weigh 1,400 lbs (635kg)
- Bottom Closed sockets weigh 1,200 lbs each (544kg)
- Inline/live tension monitoring system
- Withstands wind speed of 220 km/hr
- Resistant to salty sea winds
- Vibration dampeners and steel pigtails terminate and tension the lines.