| DRILLED PILES IN NEW YORK CITY |
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GES performed on site monitoring and inspection of the installation of 70 tension piles. Each caisson was drilled to a depth of over 100 feet and an additional 15 foot rock socked to provide tensional capacity. Rebar was installed and then each pile was grouted from bottom to top. GES provided constant on site supervision of the installation of each and every pile. In addition, GES video inspected every pile in order to guarantee that each one met the design requirements. The foundation of a 34 story high rise will be built upon these piles which GES has certified.
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| PERFORMING SOIL BORINGS AND TEST PITS INSIDE EXISTING BUILDING |
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The NYC Department of Buildings (NYCDOB) required two buildings to obtain a geotechnical report in order to receive a Certificate of Occupancy. These buildings were built in the early 1990s and had no foundation records. The purpose of this investigation was to locate the existing piles, estimate the pile lengths and capacities in order for NYCDOB to issue a Certificate of Occupancy. While coordinating with the building manager and with the building still in use, GES utilized several methods to conduct the investigation. With the use of test pits, soil borings and Parallel Seismic Testing, GES was able to determine that the foundation was adequate to support the building loads. The NYC DOB granted these buildings a Certificate of Occupancy.
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| TRANSIT AUTHORITY TUNNEL IN MANHATTAN |
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From 2009 to 2011, GES was involved in this subway project. A subsurface investigation program to collect soil samples for laboratory testing and analysis was performed including in-situ testing of the soil. Other subsurface investigations were performed to identify the top of rock in some areas as well as packer testing to determine the permeability of this rock. Rock mapping of the various areas of the tunnel was also done.
Upon completion of each assignment, GES prepared and submitted a report to the project team. |
Geotechnical Engineering 
