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
MWRA, Spot Pond
SGH developed an emergency repair for a 48 in. dia. prestressed concrete cylinder pipeline penetrating the concrete core of the Spot Pond Dam. The pipe was cracked at the penetration point due to ground movement at a nearby bend in the pipeline.
Northeast
601 & 701 Edgewater Drive, Wakefield, MA
The garages at 601 and 701 Edgewater Drive, constructed in the early 2000s, provide three and two levels of parking, respectively. SGH performed condition assessments of the garage structures and subsequently developed a repair program to address deterioration and extend their service life.


