ONE 22 ONE Office Tower, Davidson County, TN

24-story, 365,000-SF office building with Class AA office space, dining, retail, fitness center, conference center, 3 levels of below grade parking, and 10 levels above grade parking.
GTA provided the geotechnical study, including recommendations pertaining to design of spread foundations on the bedrock surface, and construction observation and special inspections.

Avocet Tower, Montgomery County, MD

GTA provided geotechnical and environmental consulting services.
22-story, 520,000-GSF mixed-use building with 220-key AC Hotel by Marriott, 370,000-SF office tower, and 2-story underground parking garage.

Geotechnical engineering, support of excavation (SOE) design, special inspection services including deep foundation load testing, and review of Site Safety Plans for the new 16-story, 144,000-SF mixed-use building with 175 affordable residential units, a footprint of approximately 15,000 SF, and partial cellar level 10 feet below the sidewalk level.
The building is supported by a combination of footings bearing on rock and 180-ton caisson piles socketed into the highly weathered rock.

Part of the West Rosslyn Area Plan Study (WRAPS), a County-driven and community-involved redevelopment opportunity.
Geotechnical engineering, environmental consulting, and COT services for the 1,200,000-SF above grade complex with three high-rise towers containing upscale condominium and luxury apartment communities, and ground floor retail. The complex also includes four levels of below grade parking for approximately 1,050 cars.

Environmental & geotechnical consulting during design, and environmental services during site excavation & construction.
$170 million, 308,000-SF office building with a 4-story underground parking garage, 1st floor retail, 14-stories of office space, Town Square, and transit connection.
USGBC LEED Platinum certified.
A geothermal heating/cooling system was installed beneath the parking garage; this is one of the first such applications in MD.

Geotechnical and environmental consulting for the 23-story, 750,000-SF, mixed-use building with apartments, condominiums, retail, and parking.
COT services and environmental consulting during construction of building’s foundation.
Instrumentation and monitoring plan to monitor settlement of a century old brick-lined stormwater tunnel supported on timber piles, located less than 10 feet from the proposed 3- to 6-foot diameter caissons.

Subsurface explorations including SPT borings, seismic Cone Penetration Test soundings, and test pits.
12-story mixed-use facility including 208 luxury apartments, 95,000 SF of retail, and 1,000-car parking structure.
The seismic CPT soundings allowed GTA to improve the seismic site class for the site resulting in a cost-effective structural design.
Construction phase observation and testing services.

22-Story luxury hotel and condominium tower and a 26-story office tower at Baltimore’s waterfront with 5-story below grade parking.
Construction observation and testing included a slurry wall, mat foundation, post-tensioned concrete, micro-piles, caissons, and tie-back anchors.
Geotechnical, environmental, and hydrogeological services including borings, monitoring wells, seismic analysis, and in-situ permeability testing.