Storrow Drive, a parkway along the Charles River in Boston, carries more than 100,000 vehicles per day. The tunnels provide access to city streets, and are constructed of reinforced concrete sections with concrete-slab roofs that are supported by...
The 185-bed John R. Oishei Children’s Hospital replaces the city’s 125-year-old Women and Children’s Hospital of Buffalo. With a focus on patient and family comfort, the new 440,000 sq ft hospital features amenities such as a...
Expansion of the Minera Escondida copper mine included constructing a corrugated steel structural plate arch tunnel. The tunnel acts as a buried bridge to carry a haul road over the mine’s conveyor system. During construction of the...
A conveyor belt runs along one of the canyon benches at the copper mine. The upper slope of the canyon was undergoing a slow and predictable landslide transverse to the conveyor belt. To protect the conveyor belt from falling debris due to the...
The Central Artery/Tunnel Project moved one of Boston’s major elevated highways underground and created usable ground-level spaces, such as the Rose Kennedy Greenway. The Rose Kennedy Greenway Conservancy undertook a project to build a...
SGH served as a special consultant to Metropolitan Transit Authority (MTA) Capital Construction to help them with concrete and waterproofing issues at their facilities. As part of our work, SGH investigated widespread cracking and water leakage...
The 1100 Broadway project combines the adaptive reuse of the Key System Building, which was heavily damaged in the 1989 Loma Prieta earthquake, with the construction of a new twenty-story building. SGH was the structural engineer for the...
Constructed in the 1950s and carrying over 100,000 vehicles per day, the Storrow Drive Interchange is a major commuting route and link to Back Bay. The interchange includes two reinforced concrete tunnels with steel-framed and reinforced...
The Central Artery/Tunnel (CA/T) Project relocated Boston’s elevated Central Artery below ground. Systemic water leakage at the tunnel roof to slurry wall intersection created a long-term corrosion threat to the roof girders and...
Portions of the Hynes Convention Center (Hynes) are located directly over I-90, the Massachusetts Turnpike. A fifty-year-old, cast-in-place concrete slab suspended from the underside of the Hynes served as the ceiling for the western...
Abstract: The Hynes Convention Center is located in the heart of Boston’s historic Back Bay neighborhood. Portions of the Hynes are located directly over I-90, the Massachusetts Turnpike. A 50-year-old cast-in-place concrete slab, suspended...
Abstract: The Commonwealth of Massachusetts Dept. of Conservation (DCR) recently completed a program of structural and waterproofing repairs to the Storrow Drive Tunnel in Boston, which is intended to extend the service life of the tunnel by...