Northeast
Dilboy Field Stadium
Dilboy Stadium was constructed by the Commonwealth of Massachusetts in the early 1950s. SGH conducted condition appraisals of the concrete stadium structure in 1988 and again in 1999.
Milton, MA
Eliot Memorial Bridge
Scope/Solutions
The Eliot Memorial Bridge, a stone arch pedestrian bridge, was constructed circa 1904 in the Blue Hills Reservation. The bridge carries the popular Skyline Trail over a ravine. In certain areas where the mortar had deteriorated, outer face stones had fallen to the ground and left voids in the stone structure. DCR wanted to undertake localized repairs to address these voids and asked SGH to evaluate the historic mortar’s composition and make recommendations for an appropriate repair mortar.
SGH extracted samples of the existing mortar from the core of the wall, where it was the least affected by environmental factors.
We performed an evaluation in our laboratory to identify the specific individual constituents of the existing mortar (e.g., Portland cement, natural cement, lime, sand) and their relative proportions.
Based on our evaluation and understanding of the bridge’s structure, we developed a repair mortar mix that would be both technically compatible with the historic stone masonry and structurally competent. Our mix design considered strength, durability, workability, and the historic composition.
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Project Summary
2016
Completion Date
Solutions
Repair & Rehabilitation
Services
Structures | Applied Science & Research
Markets
Culture & Entertainment
Client(s)
Massachusetts Department of Conservation and Recreation (DCR)
Specialized Capabilities
Marine & Civil Works | Materials Science | Microscopy
Key team members
Additional Projects
Northeast
Glass II at Milan Design Week 2017
In 2017, The Mediated Matter Group at MIT Media Lab created Glass II for the Lexus YET Show to showcase evolving glass technologies. SGH consulted on the sculpture’s materials and structural design.