projects
Bridge Upgrades
Project Scheduled upgrades for this six-lane highway bridge include replacement of fender systems and improvement of scour protection. The bridge must remain open during construction. Monitoring Requirements The project will require vibration monitoring and stability monitoring. The photo above shows heavy stone mattresses being placed at the base of the piers for scour protection. Implementation…
Read MoreMedical Center Expansion
The Project Providence Tarzana Medical Center is undergoing a 540 million dollar upgrade and enhancement that involves removal of some older structures and construction of a new patient wing, a new parking structure, and a new main building. Monitoring Requirements GEO-Instruments was contracted to monitor the support of excavation for the new patient wing and…
Read MoreTampa Airport Expansion
Project Tampa International Airport’s $2 billion expansion plan will allow the airport to serve a projected 34 million passengers per year, up from the current 21 million. Photo was taken from the tower. Monitoring Requirement Keller is installing foundations for three new structures at the airport, including the central utility plant shown in the…
Read MoreCalifornia High Speed Rail
Project The California High Speed Rail system will connect San Francisco to Los Angeles with trains traveling up to 220 mph on grade-separated track. (Rendering courtesy of California High Speed Rail Authority). GEO-Instruments is at work on a section of the project between Fresno and Bakersfield. The elevated tracks will be supported by large-bore piles.…
Read MorePrado Dam Basin
Project The USACE enlarging the flood control basin and building a dike to enhance flood risk management at Prado Dam. The basin is designed to accomodate a 200-year event. Monitoring Requirement Engineers needed to monitor settlement, total pressure, and pore-water pressures. Implementation GEO installed a wireless, solar-powered logger, three settlement cells, an earth-pressure cell, and…
Read MoreMicrotunneling at LAX
Project The LAMP project at LAX in California is a multi-billion dollar program for modernizing access to and from the airport. One part of the project involved jacking a 42-inch gas line under existing structures at Aviation Boulevard. Monitoring Requirement GEO-Instruments was contracted to provide drilling, borehole logging, instrumentation supply, installation, commissioning, and training for…
Read MoreGround Improvement
Project To consolidate foundation soil for a large warehouse facility in California, Keller installed wick drains and followed up with deep dynamic compaction and surcharging. Monitoring Requirement Monitoring the progress of consolidation required easy access to continuous measurements of pore-pressure and settlement. Implementation Vibrating wire piezometers were installed across the site. GeoCloud wireless nodes placed at the…
Read MoreSeawall Repair
Project Naples, a neighborhood of Long Beach, California, is built on three islands protected by seawalls. A project to refurbish the seawalls involved driving the steel sheet piles seen above. Monitoring Requirement Driving sheet piles generates noise and vibration. To protect adjacent properties from excessive vibrations and to protect people from excessive noise, the contractor…
Read MoreMiami Dust
GEO deployed two dust monitors at this construction site in Miami, Florida. Why two? The contractor is responsible for controlling dust from the site, but there may be other sources of dust that are outside the contractor’s control. By deploying two monitors, one upwind and one downwind from site activities, it is possible to calculate…
Read MoreCaltrain Tracks
GEO’s AMTS is monitoring Caltrain track during adjacent construction. The dots of light are prisms installed on the track. Rail clip prisms are installed in pairs at 15-foot intervals along the track. This photo shows only the inside prisms. Pairs of road prisms at the road crossing. Monitoring prism pairs provides measurements of track geometry,…
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