144 Projects

Christ Church Waltham

Christ Church

Waltham
,
MA
Project Contacts:

Built in 1897 of rounded fieldstone boulders, Christ Church was designed by Peabody and Stearns.  The original designers understood the sloped spire surface was susceptible to absorbing water and...

Central Artery Tunnel Project Leakage Investigation Boston

Central Artery Tunnel Project Leakage Investigation

Boston
,
MA
Project Contacts:

The Central Artery/Tunnel (CA/T) Project relocated Boston’s elevated Central Artery below ground.  Systemic water leakage at the tunnel roof to slurry wall intersection created a long-term...

Keck Telescope Kamuela, HI

Keck Telescope

Kamuela
,
HI
Project Contacts:

On 15 October 2006, a large earthquake damaged both telescopes at Keck Observatory causing them to miss weeks of observation. Following this event, the observatory wanted to upgrade the structural...

Pipe Failures in Residential Plumbing and Heating Systems

Pipe Failures in Residential Plumbing and Heating Systems

United States and Canada
Project Contacts:

SGH investigated the cause of failures in pipes used in residential domestic hot water and hydronic heating systems in the United States and Canada.  Occurring after less than 10 yrs in service,...

Diablo Canyon Power Plant Avila Beach

Diablo Canyon Power Plant

Avila Beach
,
CA
Project Contacts:

Diablo Canyon Power Plant, in operation since 1985, uses two Westinghouse Pressurized Water Reactor units to produce 18,000 gigawatt-hours of electricity.  PG&E retained SGH to support the re-...

Huachipa Water Treatment Plant Lima, Peru

Huachipa Water Treatment Plant

Lima
,
Peru
Project Contacts:

Ramal Norte Pipeline is a 27 km long subsurface pressure pipeline that provides drinking water from Huachipa Water Treatment Plant to several districts in Lima, Peru. The pipeline was in temporary...

Tugboat Allision Investigations

Various Marine Terminals
,
CA
Project Contacts:

During the spring of 2013, SGH investigated two hard tugboat allisions (collisions with fixed objects such as bridges or docks), at separate marine oil terminals.  In both cases, the tugs were...

Boston Center for Rehabilitative and Subacute Care

Roslindale
,
MA
Project Contacts:

The Boston Center for Rehabilitation and Subacute Care was built in two phases, with the north wing dating from 1953 and the south wing dating from 1980.  Deteriorated and aged building systems,...

Overhead Transmission Line

West Springfield
,
MA
Project Contacts:

Concrete drilled shaft foundations, for two electrical utility projects, each support a single steel monopole tower structure for new overhead electrical transmission and generation lines. ...

Procter & Gamble Company, Far East Headquarters

Kobe
,
Japan
Project Contacts:

The 500,000 sq ft, thirty-one-story building with an attached twelve-story technical research center houses Procter & Gamble’s (P&G’s) headquarters and research facilities for its Far East...

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