Midwest
1100-1114 West Randolph Street
SGH performed a condition assessment of the building enclosure and structure, recommended repairs, and later consulted on proposed renovations at 1100, 1108, and 1114 West Randolph Street.
Bloomington, MN
Riverview Office Tower Parking Garage
Scope/Solutions
Originally constructed in 1973, the Riverview Office Tower Parking Garage is a six-level precast, prestressed concrete parking structure with 1,600 parking spaces. SGH performed an assessment of the structure to help the owner understand its condition and plan for repairs.
Our investigation included visual and sounding surveys to identify the location and extent of deterioration. SGH performed chloride ion analysis, compressive strength testing, and detailed petrographic examinations on extracted concrete samples in our laboratory.
We identified corrosion of embedded steel reinforcement and underlying issues with the concrete, including elevated chloride levels and susceptibility to freeze thaw deterioration.
Working with the owner, SGH developed a phased long-term maintenance plan to extend the useful life of the structure, while allowing continued use of the garage during the project. We developed repair recommendations, including conceptual pricing to help the owner plan for the work.
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Project Summary
2019
Completion Date
470K
Project Size
Solutions
Repair & Rehabilitation
Services
Structures | Applied Science & Research
Markets
Commercial | Infrastructure & Transportation
Client(s)
Vector Construction | JMS Capital Group Real Estate
Specialized Capabilities
Physical Testing | Materials Science | Microscopy
Key team members
Additional Projects
Midwest
John Hancock Center, Scaffold Collapse
On 9 March 2002, a 100 ft long, suspended scaffold platform fell from the 42nd floor of the John Hancock Center. SGH investigated the causes of the failure.