The Charlestown Bus Facility along the Mystic River is the MBTA’s largest bus garage and critical to daily operations. The existing steel sheet pile seawall, which protects the facility from flooding and river erosion, was severely...
The stormwater retention system at the MassBiologics facility at the UMass Medical School comprises subsurface chambers constructed from modular, stackable thermoplastic units. Following partial collapse of the chambers in 2006, SGH...
In the summer of 2014, a high-intensity rainfall in Cambridge surcharged the city’s stormwater drainage system, resulting in localized flooding near a basement-level retail space. The floodwaters overtopped the sidewalk and flowed down the...
After constructing the first 1.5 mi of the Stroube Drain cast-in-place, reinforced concrete box culvert, the owner discovered the design did not consider live loads for the most severe traffic orientation. The owner wanted to know if cracking...
The new Fluvanna County High School included four buried, stackable crate-type, stormwater detention systems under deep cover. Shortly after installation in 2010, the contractor observed that the backfill material over two of the detention...
StormTech manufactures underground molded polypropylene chambers for stormwater retention systems. With no design standards available for these structures, StormTech asked SGH to assess the structural performance of the chambers and develop...