StormTech, Inc., Stormwater Chambers
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 design procedures.
Polypropylene is a thermoplastic with excellent durability, but with time-dependent strength and stiffness properties. Highlights of our evaluation and analyses of the polypropylene chambers include the following:
- Adapted AASHTO design procedures for thermoplastic pipe to the evaluate of the chambers
- Conducted computer simulations under earth and live loading conditions
- Monitored full-scale field tests to evaluate performance under live loads and earth loads in excess of those anticipated during service
Based on our work for this project, SGH authored ASTM F2418 standardizing design criteria and laboratory test methods.
Repair & Rehabilitation
Advanced Analysis | Applied Science & Research
Infrastructure & Transportation
Stormtech, Division of Ads, Inc.
Buried Infrastructure | Physical Testing
Key team members
Head of Engineering Mechanics and Infrastructure
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.
Providence Place Mall Parking Garages
The garages exhibited chronic, premature cracking and spalling of the concrete around precast double-tee flange-to-flange connections as well as other common parking structure deterioration and distress. SGH assessed the condition of the garages and designed remedial work.