Leading the world in
energy absorption
Schindler was commissioned to install a variety of elevators at an assortment of speeds and load masses into the new World Trade Center towers 3 and 4 - all part of the new World Trade Center complex in Lower Manhattan, New York City – towers 3 and 4 in New York.
Oleo international provided safety devices in the form of energy dissipation buffers. Located at the bottom of the elevator shaft protecting the elevator car and counterweights in the event of a failure.
Oleo international provided safety devices for energy absorption to go under the car at the base of the tower and under the counterweight.
3 World Trade Center - when completed in 2015 will stand 357 metres tall
Oleo supplied 98 energy dissipation buffers for a total of 49 elevator installation across two different scenarios for this project. The first specification was for elevators travelling at up to 9m/s (1772ft/min) with a load mass up to 1600kg (3527lbs). This required the Oleo LB55 with its capacity to handle an impact mass range of 1250 - 10,000kg (2756 - 16535lbs) at speeds up to *9.68m/s (1905ft/min). The second specification was for elevators travelling at up to 8m/s (1574ft/min) with a load mass up to 1600kg (3527lbs). This required the Oleo LB50 with its capacity to handle an impact mass range of 1500 - 10,000kg (3307 - 16535lbs) at speeds up to *8.80m/s (1732ft/min).
4 World Trade Center - completed in 2013 stands 297.8 metres tall
Oleo supplied a total of 74 energy dissipation buffers for the total of 37 elevator installations in the 4 World Trade Center. The requirement for these elevators was to achieve a speed of 9m/s (1772ft/min) with a load mass up to 1588kg (3501lbs). This required the Oleo LB55 with its capacity to handle an impact mass range of 1250 - 10,000kg (2756 - 16535lbs) at speeds up to *9.68m/s (1905ft/min).
*when applying the reduced stroke calculation, rated speed with terminal speed limiting device, based on EN81.1 rule 10.4.3.2 and ASME A17.1 rule 2.22.4.1.2.