22 Projects

National September 11 Memorial and Museum New York

National September 11 Memorial and Museum

New York
,
NY

The “bathtub” slurry wall at the World Trade Center (WTC) site survived when the WTC towers collapsed in 2001, making it a symbol of endurance. WTC site redevelopers wanted a section of the wall...

Standard Shoring Designs

Various
,
MA
Project Contacts:

To help them construct utility trenches, Bond Brothers needed standard shoring designs for temporary excavation support systems. SGH developed a library of standardized designs for use at project...

Belmont Municipal Light Department (BMLD), Underground Transmission Line

Cambridge and Belmont
,
MA

Belmont Municipal Light Department (BMLD) needed to upgrade their aging substation and power distribution system to improve reliability and prepare for future demands. Working with Eversource, the...

Johns Hopkins University, Krieger Hall

Baltimore
,
MD

Constructed in 1929, historic Krieger Hall sits on the Keyser Quadrangle at Johns Hopkins University (JHU). It connects to Ames Hall through a vestibule and colonnade walkway to the west and...

Brentford Hall

Cambridge
,
MA
Project Contacts:

Constructed in the 1920s, Brentford Hall is a condominium building with load-bearing, mass-masonry walls supported by shallow footings. The abutter to Brentford Hall planned to demolish its...

Digital Airport Surveillance Radar

US and International Locations
Project Contacts:

Raytheon develops radar sites around the world for U.S. government agencies, including the Department of Defense and Federal Aviation Administration. SGH provides engineering services to design...

135 Franklin Street

Stoneham
,
MA

The five-story building at 135 Franklin Street experienced damage due to settlement. Over the years, the owner undertook repairs at the elevator pit and central corridors and needed to address...

Retaining Wall Failure Investigation

Prescott
,
AZ
Project Contacts:

Shortly after the site was developed, a terraced, mechanically stabilized earth (MSE) wall failed. The MSE wall, with heights up to 63 ft tall, consisted of precast concrete facing panels and soil...

Lynn Classical High School

Lynn Classical High School

Lynn
,
MA

Lynn Classical High School is a one- to three-story structure built on construction debris fill. Shortly after construction, staff observed water leakage and significant damage due to settlement...

Saint Francis Hospital and Medical Center  Hartford, CT

Saint Francis Hospital and Medical Center

Hartford
,
CT

During the 2008 excavation for the new North Tower, the adjacent five-story, brick masonry building (Building 3) suddenly settled about 1.5 in.  This movement caused significant damage to Building...

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