45 Projects

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...

Storrow Drive Interchange Tunnels Boston

Storrow Drive Interchange/Tunnels

Boston
,
MA

Storrow Drive, a parkway along the Charles River in Boston, carries more than 100,000 vehicles per day. The tunnels provide access to city streets, and are constructed of reinforced concrete...

Homestead Hills Development

Thornton
,
CO
Project Contacts:

The Homestead Hills development comprises 178 one- and two-story, wood-framed homes constructed between 2005 and 2010. Shortly after construction, homeowners reported cracked drywall, displaced...

DC Water North East Boundary Trunk Sewer

Washington
,
DC
Project Contacts:

In 2014, a five-story residence was constructed directly over DC Water’s North East Boundary Trunk Sewer (NEBTS) with only about 2 ft of soil between the bottom of the basement and the top of the...

The Carillon, 185 Massachusetts Avenue

Boston
,
MA
Project Contacts:

As required by the City of Boston, The Carillon’s condominium association undertook an inspection of the building’s facade. SGH performed the inspection, identifying cracks in the glass fiber-...

Palo Verde Nuclear Generating Station Pipelines

Palo Verde Nuclear Generating Station Pipelines

Tonopah
,
AZ
Project Contacts:

Constructed in the early 1980s by the Arizona Public Service Company, the water reclamation supply system at Palo Verde Nuclear Generating Plant consists of thirty-six miles of prestressed...

Montauk Lighthouse

Montauk Lighthouse

Montauk
,
NY

Authorized by the Second Congress and President George Washington, construction of the Montauk Lighthouse at the eastern end of Long Island was completed in 1796. The octagonal lighthouse suffered...

Stroube Drain Oxnard

Stroube Drain

Oxnard
,
CA

After constructing the first 1.5 mi of the Stroube Drain cast-in-place, reinforced concrete box culvert, the owner discovered the design did not consider live loads for the most severe traffic...

National Guard Armory Buildings

National Guard Armory Buildings

MA
Project Contacts:

During February 2011, heavy snowfall with a sustained period of below-freezing temperatures resulted in significant snow accumulation in the northeast United States. SGH investigated reported...

MTA South Ferry Terminal New York

MTA South Ferry Terminal

New York
,
NY
Project Contacts:

SGH served as a special consultant to Metropolitan Transit Authority (MTA) Capital Construction to help them with concrete and waterproofing issues at their facilities. As part of our work, SGH...

Pages