144 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...

University of the District of Columbia Plaza

Washington
,
DC
Project Contacts:

The University of the District of Columbia wanted to renovate the Theater of the Arts building and address ongoing leakage at the same time. The theater building adjoins and lies partially beneath...

The Artist Building at 300 Summer Street

Boston
,
MA
Project Contacts:

The Artist Building at 300 Summer Street, originally constructed in 1898, was converted to cooperative residences/art studios in the 1990s. Current flood maps show the building is vulnerable to...

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...

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