structures
Church Renovation
Church Renovation GEO installed instrumentation to monitor the stability of the church structure during renovation work. An Automated total station (AMTS) monitored for any displacements of the walls. GeoCloud wireless tiltmeters were also installed at critical locations to monitor rotational displacements.
Read MoreRenovation of Apple Store
Renovation of Apple Store GEO deployed wireless data loggers, strain gauges, and an AMTS system. GEO monitored renovation work at the iconic glass cube Apple store in New York City. A critical phase of the renovation was the controlled release of tension in a pretensioned steel structure. Instrumentation included vibrating wire strain gauges to monitor the…
Read MoreStructural Stability
Structural Stability Project This office building required foundation improvements but had to stay open while the work was done. Requirement To ensure the safety of people inside and to comply with building codes, the structure had to be monitored for settlement and deformation. Solution GEO installed an AMTS on a foot bridge. It monitored prisms…
Read MoreKennedy Center
Kennedy Center Expansion The John F. Kennedy Center for the Performing Arts undertook an expansion project at its south end, adding three pavilions and a pedestrian bridge. The work involved demolition, excavation, and other construction activities that could affect the Kennedy Center, the Roosevelt Bridge ramp, and the underground DC water utilities. Early on in…
Read MoreCharlestown Navy Yard
Charlestown Navy Yard GEO-Instruments installed and automated 10 crackmeters and a vibration monitor at the home of the USS Constitution. The instruments were needed to monitor the National Park Service police station while the seawall is reinforced by angled micropiles. The instrumentation was fully automated, transmitting hourly readings to GEO’s web-based monitoring platform, which processed…
Read MoreNYC West Side Demolition
NYC West Side Demolition GEO-Instruments provided precise optical monitoring of the structures around the building in the foreground, which was torn down and replaced. The dots overlaying the photo show the locations of prisms, small optical devices that serve as remote targets for an automated total station. GEO’s technician configures the AMTS, which was located on…
Read MoreChinatown DC
Chinatown DC Excavation GEO deployed an AMTS to monitor the stability of the buildings adjacent to this deep excavation in Washington DC’s historic Chinatown. Optical prisms were installed on the buildings and also on elements of the SOE. A change in the spatial coordinates of the prisms would indicate that movement had occurred. Every two…
Read MoreFDR Drive
FDR Drive Reconstruction Project Overview Significant deterioration of the pilings supporting this busy six-lane parkway threatened its stability. Because the highway carries over 150,000 vehicles daily, it had to remain open to traffic during reconstruction. To manage the risk, highway engineers contracted GEO-Instruments to implement a monitoring system with early-warning alarms. Enclosure for data Logger…
Read MoreOld South Church
Old South Church Project Overview Old South Church is a national historic landmark in Boston. It was built in 1873 on a wooden pile foundation. In 2008, high pressure grouting operations on a nearby subway station caused some of the piles to shift and opened a 70-foot long vertical crack in the east wall of…
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