SPS Geotechnical Contracting

Installing grout through hollow bars
Installing grout through hollow bars

 

Livingston Street
Brooklyn, New York

Maintaining strong relationships with clients is the hallmark of Structural Preservation Systems' (SPS) business. One example of our proven success in this arena is our relationship with Kal Industries, a general contractor and construction manager located in Hauppauge, New York.

For this project, SPS was retained to install 96 compression elements for a new building at 230 Livingston Street, just a few blocks south of the Fulton Street Mall in Brooklyn, New York. The installation of an additional supplemental system was required due to additional loads caused by a combination of seismic events and the structure's height. The proposed, combined structure would contain two connected towers of 26 and 16 stories, with each tower containing three floors below grade.

SPS provided an alternate system utilizing a grout-through hollow-bar system manufactured in Germany, modified drilling bits and adjusted manufacturer's installation sequences to install 12-inch diameter compression elements. When compared to larger diameter conventional systems, this system eliminates steps from the installation process, minimizes material handling and provides a much higher design capacity.

SPS' design resisted cyclic loading of up to 235 tons with less than a half inch of total movement and about a quarter inch of permanent movement. The designer set the deflection criteria at just over one inch of total movement, and SPS devised this stiffer, more cost- and time-effective solution, which withstood the required load with far superior results. SPS' solution enabled the owner to meet the goal of decreasing costs while increasing productivity and quality.


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