37 Projects

Pennsylvania Capitol

Harrisburg
,
PA

When historical murals in the rotunda of the Pennsylvania Capitol showed signs of water damage, SGH investigated leakage and collaborated with Perfido Weiskopf / Noble Preservation Joint Venture...

John Hancock Center, Scaffold Collapse

Chicago
,
IL
Project Contacts:

On 9 March 2002, a 100 ft long, suspended scaffold platform fell from the 42nd floor of the John Hancock Center.  As the scaffold fell, it dropped debris in an arc from the northwest corner to the...

Sudbury Aqueduct

Needham
,
MA

Built in 1880, the aqueduct was a major pipeline for the City of Boston’s water distribution network until 1940, when the Hultman Aqueduct replaced it. Connecting reservoirs in Framingham with the...

Miami Marine Stadium

Miami
,
FL
Project Contacts:

After Hurricane Andrew in 1992, the City of Miami closed the Miami Marine Stadium because of safety concerns. The building remained unused for seventeen years and continued to suffer exposure to...

R.O. Pickard Environmental Centre Expansion (ROPEC)

Ottawa
,
ON
Project Contacts:

For the R.O. Pickard Environmental Centre digester expansion program, the owner's engineer envisioned two structurally-identical, modified, egg-shaped digesters founded on drilled piers extending...

Massachusetts Institute of Technology, Haystack Radar Antenna Elevation Structure

Westford
,
MA
Project Contacts:

Massachusetts Institute of Technology/Lincoln Laboratory initiated a major upgrade of the Haystack radar antenna requiring replacement of the elevation structure. The upgrade program was jointly...

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 core and...

Idaho National Laboratory, Integrated Waste Treatment Unit (IWTU)

Idaho Falls
,
ID
Project Contacts:

The Idaho Cleanup Project involved installation of an Integrated Waste Treatment Unit (IWTU) that implemented a prototype technology. The IWTU processes radioactive acidic sodium-bearing waste and...

Crystal River Nuclear Power Plant Unit 3, Drop Load Analysis

Crystal River
,
FL
Project Contacts:

The Crystal River Nuclear Power Plant, Unit 3, is part of a 4,700 acre energy complex that contains a 914 MW pressurized water reactor. When the client planned rigging operations for replacement...

Natgun Water Storage Tanks

Portland
,
OR
Project Contacts:

DN Tanks (formerly Natgun) designs and constructs prestressed concrete liquid storage tanks. The tanks are American Water Works Association (AWWA) D110 prestressed wire-wound concrete tanks that...

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