Engineering Mechanics

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National Missile Defense, Inflated Fabric Radome for Sea-Based X-Band Radar

United States

Project Contacts: Frank Kan, Mehdi Zarghamee

The Sea-Based X-Band Radar (SBX) is a major component of the Ground-Based Mid-Course Missile Defense (GMD). The SBX is a mechanically steerable, phased-array radar antenna mounted on a self-propelled, ocean-going, semi-submersible platform. This...

Services:Materials Design, Structural Design

Markets:Science & Defense

Keywords:Analytical Studies, Engineering Mechanics, Finite Element Analysis, Laboratory Testing and Analysis, Materials Analysis, Materials Testing for Design, Wind Engineering

Sudbury Aqueduct

Needham, MA

Project Contacts: Jesse Beaver, Phillip Sharff, Mehdi Zarghamee

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 City of Boston, the 17.4 mi. long aqueduct...

Services:Structural Investigation

Markets:Water/Wastewater

Keywords:Adjacent Construction, Engineering Mechanics, Finite Element Analysis, Inspection, Masonry, Masonry-Brick, Pipeline, Risk Assessment, Soil-Structure Interaction

Muskegon County Wastewater Management System

Muskegon, MI

Project Contacts: Rasko Ojdrovic, Mehdi Zarghamee

The Muskegon County Wastewater Management System's pipeline is an 11 mi, 66 in. dia. prestressed concrete cylinder pipe (PCCP) that carries raw domestic and industrial sewage. SGH investigated the failure of a 20 ft pipe segment, performed a...

Services:Materials Investigation, Structural Investigation

Markets:Water/Wastewater

Keywords:Condition Assessment, Corrosion, Engineering Mechanics, Failure Investigation, Field Testing, Laboratory Testing and Analysis, Metallurgy, PCCP, Petrography, Pipe, Pipeline

Hultman Aqueduct

Weston, MA

Project Contacts: Phillip Sharff, Mehdi Zarghamee

For many years, the Hultman Aqueduct delivered nearly all the drinking water to the Boston area. The aqueduct had never been shut down for inspection or maintenance during that time due to its nonredundant nature. The Massachusetts Water...

Services:Structural Investigation

Markets:Water/Wastewater

Keywords:Condition Assessment, Cracking, Engineering Mechanics, Field Testing, Laboratory Testing and Analysis, Nondestructive Testing, Petrography, Pipe, Pipeline

Massachusetts Institute of Technology, Haystack Radar Antenna Elevation Structure

Westford, MA

Project Contacts: Frank Kan

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 sponsored by the United States Air Force and the...

Services:Structural Design

Markets:Science & Defense

Keywords:Award Winning, Engineering Mechanics, Finite Element Analysis

Seismic Assessment of Pipelines

Canada

Project Contacts: Mehdi Zarghamee

Prestressed concrete cylinder pipes (PCCP) are extensively used in the cooling system of power plants. SGH evaluated the seismic performance of buried PCCP pipelines in low, moderate, and high seismicity regions and recommended design changes to...

Services:Structural Design

Markets:Water/Wastewater

Keywords:Engineering Mechanics, International, PCCP, Pipe, Pipeline, Seismic Analyses

Greybull Water Transmission Pipeline

Greybull, WY

Project Contacts: Rasko Ojdrovic

The Greybull Water Transmission Pipeline is the only pipeline that carries treated water for the town of Greybull. The 16.5 mile pipeline was constructed in 1960s and 1970s with 12 in. and 14 in. dia. asbestos cement (AC) pipes. SGH performed a...

Services:Materials Investigation, Structural Investigation

Markets:Water/Wastewater

Keywords:Analytical Studies, Engineering Mechanics, Failure Risk Assessment, Field Testing, Laboratory Testing and Analysis, Petrography, Pipeline

Natgun Water Storage Tanks

Portland, OR

Project Contacts: Dominic Kelly, David McCormick, Mehdi Zarghamee

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 incorporate precast concrete panels. SGH developed...

Services:Structural Design

Markets:Water/Wastewater

Keywords:Concrete, Concrete-Prestressed, Engineering Mechanics, Finite Element Analysis, Seismic Analyses, Tank

Development of Locomotive Crashworthy Components

Train collisions involving locomotives can result in serious damage and occupant injury due to the larger size and stiffness of the locomotive. In an effort to improve safety for rail passengers and operators, the Volpe National Transportation...

Services:Materials Investigation, Structural Investigation

Keywords:Analytical Studies, Engineering Mechanics, Field Testing, Laboratory Testing and Analysis, Materials Analysis, Materials Testing for Design, Research/Development

Idaho National Laboratory, Advanced Test Reactor, Primary Heat Exchangers Upgrade

Idaho Falls, ID

Project Contacts: Said Bolourchi, Michael Mudlock

The Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL) supports research and testing of materials for use in large-scale and prototype reactors. Previous analysis by BEA raised potential concerns with the primary heat exchanger...

Services:Structural Rehabilitation

Markets:Nuclear

Keywords:Analytical Studies, Construction Consulting, Engineering Mechanics, Equipment, Seismic Engineering and Retrofit

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Engineering Mechanics

Project Term Page Tabs

Looking for more?

National Missile Defense, Inflated Fabric Radome for Sea-Based X-Band Radar

Sudbury Aqueduct

Muskegon County Wastewater Management System

Hultman Aqueduct

Massachusetts Institute of Technology, Haystack Radar Antenna Elevation Structure

Seismic Assessment of Pipelines

Greybull Water Transmission Pipeline

Natgun Water Storage Tanks

Development of Locomotive Crashworthy Components

Idaho National Laboratory, Advanced Test Reactor, Primary Heat Exchangers Upgrade

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