Wethersfield, CT
StormTech, Inc., Stormwater Chambers
Scope/Solutions
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.
Project Summary
Solutions
Repair & Rehabilitation
Services
Advanced Analysis | Applied Science & Research
Markets
Infrastructure & Transportation
Client(s)
Stormtech, Division of Ads, Inc.
Specialized Capabilities
Buried Infrastructure | Physical Testing
Key team members
Jesse Beaver
Executive Principal, Engineering Mechanics and Infrastructure
Additional Projects
Northeast
Eastern Maine Medical Center Parking Garage
The Eastern Maine Medical Center expansion included a new parking garage to connect to the existing garage and the addition of snow-melt units to facilitate snow removal. SGH was the prime consultant, structural engineer of record, and the precast concrete specialty engineer for the project.
Northeast
Massachusetts Department of Transportation, Callahan Tunnel Vent Buildings
The Massachusetts Department of Transportation (MassDOT) owns several buildings housing large air exchangers to ventilate the Callahan Tunnel that connects East Boston and downtown. SGH served as the structural engineer of record for the assessment and restoration project to address the distressed m


