excavations
Texas Capitol Complex
Projects ProjectsRecentSettlementExcavationsStructuresWalls & SlopesInfrastructureBridgesTunnelsRailVibrationDustConsolidationPiles Texas Capitol Complex Expansion Capitol Complex Phase 1 Phase 1 included construction of two state office buildings and a five-level underground parking garage topped with a landscaped pedestrian mall. Phase 1 required an extensive support of excavation program. The excavation footprint exceeded 10 acres with an average depth of 60 feet…
Read MoreSOE in Seattle
Monitoring SOE in Seattle GEO-Instruments is monitoring the support of excavation system at 701 Dexter in Seattle. The deep excavation makes room for a 4-level underground parking garage that will be topped by a 10-story office building. At the start of the project, the 701 Dexter building was still standing. GEO used a drone to…
Read MoreSeatac Utility Upgrade
Seatac Utility UpgradeProject A utility upgrade project at SeaTac’s north terminal required excavations adjacent and below the departure ramp foundation. An AMTS system was selected to monitor for any displacements induced by the excavations. Challenge For the first excavation, AMTS was positioned outside the utility room. For the second excavation, the AMTS was repositioned to…
Read MoreMed Center Expansion
Med Center Expansion 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…
Read MoreTerminal Expansion
Denver Airport Expansion Project Denver International Airport added 39 gates to the existing terminals, increasing capacity by 30%. Monitoring Requirement Existing structures were monitored for movement as excavation and construction takes place. GEO was contracted to monitor four structural columns on Terminal C, which was undergoing a 16-gate expansion. Implementation GEO-Instruments installed two L-bar prisms, one…
Read MoreM-Street Excavation
M-Street Excavation & Tunnel GEO monitored a 32-foot deep excavation and a WMATA metro tunnel adjacent to the excavation in Washington DC. The SOE consisted of drilled soldier piles braced with whalers and rakers. GEO’s technician can be seen on the wall. Monitoring prisms, a few visible in this photo, were mounted at the top…
Read MoreBellevue Tunnel Portal
Bellevue Tunnel Portal The East Link extension adds 14 miles and 10 stations to Sound Transit’s light rail system, carrying commuters between Bellevue and Seattle. This is a conceptual drawing of the south portal site, where the light rail enters the Bellevue Downtown Tunnel. This was the actual south portal site, cleared, graded, and ready…
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 MoreSimpson Querrey Center
Simpson Querrey Center This satellite view showed the construction site for the Simpson Querrey Biomedical Research Center on Northwestern University’s Chicago Campus. The small blue dots were the locations of the AMTS systems used on the project. GEO supplied and configured the AMTS for Getec UK (now GEO-Instruments UK). The Google Street View rover captured…
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…
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