Milton, MA
MWRA, Blue Hills Covered Storage Design-Build Project
Scope/Solutions
As part of an effort to eliminate open distribution storage resevoirs, Massachusetts Water Resources Authority sought to construct two covered drinking water storage tanks. The Blue Hills Covered Storage Project involved the construction of two buried tanks able to contain up to 10 million gallons of water each, site enhancements, and wetlands mitigation. SGH was the structural engineer for the design-build project.
SGH designed the structure for the 239 ft dia., 32 ft tall concrete tanks in conformance with ACI 350 – Code Requirements for Environmental Engineering Concrete Structures. Highlights of our work include the following:
- Finite element analysis to verify the design of the tank structure, which comprises a cast-in-place concrete, two-way, flat slab floor structure, cast-in-place concrete walls, and a precast concrete roof structure with cast-in-place concrete topping
- Fluid-structure and soil-structure interaction analysis for specified seismic accelerations
- Computer simulation of the early-age thermal and shrinkage behavior of the concrete and development of a construction sequence along with concrete curing and protection measures to minimize cracking
- Design of the buried roof waterproofing system and drainage
- Construction administration services including observation of the work for conformance with the design
- The project also included a new above-ground building, dams, and associated structures on the Blue Hills Reservation.
- Landscape features, designed by others on our team, include upland meadows, upland forest and meadow edge (reforestation), a shoreline peninsula, walking trails, fencing and gates, site lighting, and landscape planting.
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Project Summary
2010
Completion Date
38M
Construction Value
Solutions
New Construction
Services
Building Enclosures | Advanced Analysis | Structures
Markets
Infrastructure & Transportation
Client(s)
Barletta Engineering Corporation
Specialized Capabilities
Roofing & Waterproofing | Buried Infrastructure | Computational Mechanics
Additional Projects
Northeast
Bradley Palmer State Park Pedestrian/Equestrian Bridge
Built in the early 1900s, the pedestrian/equestrian bridge over the Ipswich River at Bradley Palmer State Park was closed because of deterioration. SGH investigated the structure and developed a rehabilitation program.
Northeast
Central Artery/Tunnel Project Slurry Walls
The Central Artery/Tunnel (CA/T) Project relocated Boston’s elevated Central Artery below ground. SGH provided investigative services and designed wall repairs for multiple construction contracts of the CA/T project.