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| Emory-Oxford Road Building |
 Owner: Emory University
General Contractor: Gilbane Building Company
Project Description:
The Oxford Road Building at Emory University consists of several levels of above ground retail and administrative office space and an auditorium. Parking for the structure consists of three levels of a below grade deck. Proximity to the existing B. Jones Administration Building and Math & Science Center precipitated the need for earth retention to aid the construction of the parking deck.
Our approach to the project was to construct a permanent waterproof shotcrete shoring wall in a top-down manner such that once the excavation reached subgrade elevation, the wall was simultaneously completed. The maximum height of the shoring wall is approximately 38 feet along the north side adjacent to the B.Jones Building. The wall extends around three sides of the building and parking deck comprising a total of 18,400 square feet.
Due to the proximity of the B. Jones Building (approx. 15 feet from the top of the shoring wall), the project specifications limited the deflection of the shoring wall to 1 inch in the lateral direction. We utilized a continuous automated monitoring system to examine the wall performance relative to this criteria. The system then uploaded all the data to a website for near real time viewing. Over the course of the project the monitoring system registered 0.5 inches or less of lateral movement adjacent to the B. Jones Building. |
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| Children's Healthcare of Atlanta at Egleston |
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 Owner: Children’s Healthcare of Atlanta
General Contractor: Brasfield & Gorrie
Project Description:
In order to meet the increasing pediatric demands of the Atlanta area, Children’s Healthcare of Atlanta has expanded its Egleston campus to include a multi-level below grade parking deck attached to new interior hospital space.
The close proximity of adjacent roads and existing structures required that the perimeter of the site receive some type of earth retention to separate the grades. Therefore, we constructed a top-down permanent waterproof concrete shoring wall that combined a conventional temporary earth retention wall and a concrete foundation wall. The concrete contains a waterproofing admixture and serves as permanent lagging between steel soldier piles. This type of earth retention provides schedule and cost savings by eliminating the need to build two separate wall systems (one temporary and one permanent).
The shoring wall area totaled approximately 90,000 square feet with a maximum wall height of approximately 75 feet. |
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| Georgia Aquarium Dolphin Exhibit Expansion |
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 Owner: Georgia Aquarium, Inc.
General Contractor: Brasfield & Gorrie
Project Description: An expansion to the existing facility at the Georgia Aquarium required the addition of an interior column with the footprint of the building. However, there existed no foundation to support the new column. The solution was to install a three micropile group in the basement level of the structure.
Access to the basement required the use of a low-headroom drill rig due to clearance restrictions. The selected rig was a Hutte HBR 203 micropile rig. It allowed the installation of a test micropile in proximity to the pile cap, as well as the production piles.
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| Maynard H. Jackson International Terminal, Atlanta Airport |
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 Owner: City of Atlanta, Department of Aviation
General Contractor: HMMH Joint Venture
Project Description: In 2008, the City of Atlanta began construction on the MHJIT project, which will be a stand-alone, second terminal at Atlanta’s Hartsfield-Jackson International Airport. The new terminal will serve international passengers and will connect to existing Concourse E through an extension of the existing Automated People Mover System. ABE was contracted by HMMH to install the foundation system for the new terminal, which consists of approximately 280 drilled piers ranging in diameter from 24 inches to 66 inches.
The drilled piers were installed within a variety of subsurface conditions including boulder fill, very deep earth fills associated with runways and aprons, and very hard but seamy rock. A further complication was the presence of the Flint River, which crosses beneath the MHJIT site within a concrete enclosure. Severe groundwater conditions and steeply bedded rock were encountered near the river enclosure. ABE used both cased hole and slurry methods to install the piers and drilled or cored 767 feet of rock during the installation. The drilled piers were completed in April 2009 and the terminal is scheduled to be completed in 2012. |
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| Streets of Buckhead – Parcel A |
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 Owner: Ben Carter Properties
General Contractor: Balfour Beatty Construction Company
Project Description: The Streets of Bukhead development consists of a multi-tract, mixed use development in the Buckhead area of Atlanta. The initial phase of development included three parcels, each encompassing at least a city block. ABE provided geotechnical design/construction services for Parcel A, including 32,000 square feet of permanent shoring, 25,000 square feet of temporary shoring, 70 drilled pier foundations, rock anchors and a site-wide temporary dewatering system.
The Parcel A structure includes 3 to 5 levels of below-grade parking. To maximize space within the structure, the perimeter walls were typically close to the property lines. For this reason, Balfour Beatty recommended the use of ABE’s permanent shoring system with shotcrete lagging. With this system, the distance between the property line and the face of wall could be as little as 18 inches |
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