Northeast
MBTA Lynn Commuter Rail Station
SGH led a multidisciplinary team to evaluate the condition of the facilities at the Massachusetts Bay Transportation Authority (MBTA) Lynn commuter rail station and recommended repairs.
Various Locations
Skewed Culvert
Scope/Solutions
With limited guidance in existing design standards, the culvert manufacturer was struggling to efficiently design headwalls for their metal culverts skewed relative to the road. SGH implemented a design procedure allowing them to quickly analyze a range of conditions.
SGH developed an automated design procedure for skewed headwalls at metal culverts. We adapted the design methodology from the American Association of State Highway and Transportation Officials guidelines fully accounting for all forces on the headwall. To make the design procedure useful for future applications, we generalized the calculation to apply to any culvert length, section shape, cover height, skew angle, or surface gradient.
With our design procedure, the manufacturer can design skewed structures more accurately and simply, reducing cost and allowing them to use their culverts at more project sites.
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Project Summary
2014
Completion Date
Solutions
New Construction
Services
Applied Science & Research
Markets
Infrastructure & Transportation
Client(s)
Lane Enterprises, Inc.
Specialized Capabilities
Buried Infrastructure
Key team members
Jesse Beaver
Executive Principal, Engineering Mechanics and Infrastructure
Additional Projects
Brian J. Gallagher Generating Station
In 2012, power output suddenly dropped by half. Mississippi River Power Corp. (MRPC), the owner and operator of the generating station, discovered that the penstock was damaged and partially blocked. SGH designed repairs for the concrete-encased, steel-lined penstock.