36 Projects

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...

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...

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...

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...

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-...

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