Premium Technical Services Corp.

Architect:

L.S. Engineering Associates Corp.

General Contractor:

Ratto Construction Company

Scope Of Work

With increasing concerns of hurricanes passing through the Northeast after the devastating effects of Hurricane Sandy, many cities are building preventative measures to counter the possible effects of these storms. Since One Evertrust Plaza is less than 1,500 feet from the Hudson River, the building needed extra protection against storm surge and its accompanying floodwater. This project was for the construction of a new concrete floodwall to protect the multiple generators that power the building. On site, there were many underground obstructions that other types of piles may not have been able to work around. MPS helical piles were chosen by the installer to bypass the gas lines, sewer lines, and more without issue.

Further, the job site was less than 6 feet from concrete sidewalks, which were left completely undisturbed due to the piles’ vibration-free installation. The construction of the floodwall called for a portion of the helical piles to be battered, meaning to be installed at an angle, in order to counter any lateral loads that possible floodwater and debris could exert on it.

One of Premium Technical Services’ certified installers, Ratto Construction, was contracted to install a total of 148 MacLean helical piles at a depth of 27’ and minimum torque of 6,000 ft-lbs for the vertical piles, and a depth of 32’ for the battered piles (at varying angles) with a minimum torque of 15,000 ft-lbs. All of the helical piles were safely and successfully installed in 10 days.

Pile Specs:
148 MacLean Power Systems Helical Piles
D15 8”, 10”, 12” lead w/ D15 Extensions
(2.00” Round Corner Square shaft w/
2.00” Round Corner Square Extensions)
30.5’ Average Depth
10,500 ft-lbs Average Torque

Ultimate Loads:Vertical Helical Piles: 60 kip Battered Helical Piles: 150 kip