42 Projects

Central Arizona Project

Tucson
,
AZ
Project Contacts:

The 252 in. dia. concrete pipe is used in siphons to convey water in the Central Arizona Project and is the largest diameter pipe in the world. The pipes have a 19.625 in. thick concrete...

Massachusetts Water Resource Authority, Walnut Hill Treatment Plant, Cosgrove Intake Pipeline

Marlborough
,
MA
Project Contacts:

The Cosgrove Intake pipeline, a 144 in. dia. prestressed concrete cylinder pipe (PCCP), at MWRA’s Walnut Hill Water Treatment Plant Project was completed in early 2004 as a part of the water...

Cholla Power Plant

Joseph City
,
AZ
Project Contacts:

Arizona Public Service Company (APS) chose SGH to perform a condition assessment and develop repairs for the circulating water pipelines at the Cholla Power Plant. The coal-fired power plant, co-...

Hoosac Wind Project

Hoosac Wind Project
,
MA
Project Contacts:

The Hoosac Wind Project is located in the mountains of Western Massachusetts. The project includes nineteen 1.5 MW wind turbines consisting of a steel tower supported by 45 ft dia. reinforced-...

White Rock North, Water Transmission Main Failure Investigation

Dallas
,
TX
Project Contacts:

The White Rock North Water Transmission Main is a 17 mi, 84 in. dia. prestressed concrete cylinder pipeline, embedded cylinder type, which delivers approximately 200 million gallons per day of...

Global Analysis of World Trade Center Towers

New York
,
NY
Project Contacts:

The collapse of the World Trade Center (WTC) towers on 11 September 2001 was an unprecedented event in U.S. history.  NIST retained SGH and ARA to develop computer simulations of the structural...

Bi-County East and West Water Tunnel

Prince George and Montgomery
,
MD
Project Contacts:

The Bi-County East and West Water Tunnel supplies potable water to Montgomery and Prince George’s Counties in Maryland.  The tunnel, located in heavily weathered rock up to 120 ft below the I-495...

Warner Bros. Studios, Glass Building

Burbank
,
CA
Project Contacts:
The Glass Building is a four-story office building built over a parking structure.  The steel moment-frame building features a structurally-glazed curtain wall.  As a result of the 1994 Northridge...

303 Congress Street

Boston
,
MA
Project Contacts:

The six-story, steel-moment framed building at 303 Congress Street was constructed in 1983. The building was two bays wide parallel to Congress Street and eight bays wide parallel to the...

MWRA, Spot Pond

Stoneham
,
MA
Project Contacts:

SGH developed an emergency repair for a 48 in. dia. prestressed concrete cylinder pipeline penetrating the concrete core of the Spot Pond Dam. The pipe was cracked at the penetration point due to...

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