142 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...

Seabrook Station Nuclear Power Plant

Seabrook Station Nuclear Power Plant

Seabrook
,
NH

The discovery of alkali-silica reaction (ASR) in concrete structures at the Seabrook Station Nuclear Power Plant (Seabrook) was first documented case of ASR at any U.S. nuclear facility. The...

MWRA, Harvard University Science Complex, Pipeline Eval to Enable Construction on Site

Harvard University Science Complex, MWRA Sewer

Allston
,
MA

Harvard University planned to locate a new science complex above a Massachusetts Water Resources Authority (MWRA) brick masonry pipeline that was over 115 years old. The University was concerned...

Archdiocese of Boston, Multiple Building Condition Assessments

Archdiocese of Boston, Multiple Building Condition Assessments

Boston
,
MA
Project Contacts:

With a need to evaluate more than 100 properties with a total of 200 individual structures, the Archdiocese of Boston asked SGH to develop and implement a condition assessment program that...

MassBiologics, Stormwater Retention System

Boston
,
MA
Project Contacts:

The stormwater retention system at the MassBiologics facility at the UMass Medical School comprises subsurface chambers constructed from modular, stackable thermoplastic units.  Following partial...

Portsmouth Navy Yard, Modular Submarine Enclosure

Portsmouth
,
NH
Project Contacts:

The Portsmouth Naval Shipyard owns and maintains a temporary steel modular-enclosure system to protect submarines during overhaul, repair, and modernization operations. While a contractor was...

Minera Escondida, Organic Growth Project 1, Tunnel 4

Atacama Desert
,
Chile
Project Contacts:

Expansion of the Minera Escondida copper mine included constructing a corrugated steel structural plate arch tunnel. The tunnel acts as a buried bridge to carry a haul road over the mine’s...

Retail Space

Cambridge
,
MA
Project Contacts:

In the summer of 2014, a high-intensity rainfall in Cambridge surcharged the city’s stormwater drainage system, resulting in localized flooding near a basement-level retail space. The floodwaters...

Children's National Medical Center, Healing Garden

Washington
,
DC
Project Contacts:

Children’s National Medical Center wanted to provide patients and their families with a garden where they could enjoy time outdoors. The Bunny Mellon Healing Garden dedicated to the First Ladies...

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...

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