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.
Chicago, IL
200 North LaSalle
Scope/Solutions
The Class A office building is located at 200 North LaSalle Drive in the heart of Chicago’s Loop. The thirty-story tower features a curtain wall facade that maximizes tenant views with floor-to-ceiling glass. SGH performed a critical facade examination in accordance with the city’s Exterior Wall Program.
The Exterior Wall Program requires critical facade examinations on a four-, eight-, or twelve-year cycle with intermittent ongoing noncritical inspections on a two-year cycle. 200 North LaSalle required a critical facade examination as part of this cycle in 2019.
SGH worked with Omni Group, the property owner, to complete the following as part of the critical facade examination:
- Developed a request for proposal for contractors to provide facade access, including mobilization, protection, and demobilization as specified by the building manager and considering the active urban environment with two streets, elevated train tracks, and an alleyway
- Performed a hands-on examination of representative areas of the four exterior facades from a swing stage
- Documented the conditions of the curtain wall and its components
- Recommended ongoing repairs for the curtain wall and its components based on our observations
- Prepared and filed a report for the City of Chicago
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Project Summary
2019
Completion Date
640K
Project Size
LEED
Certification
Solutions
Repair & Rehabilitation
Services
Building Enclosures | Performance & Code Consulting
Markets
Commercial
Client(s)
Omni Group of Companies
Specialized Capabilities
Condition Assessments | Facade Inspection Ordinances
Key team members
Peter Babaian
Managing Principal, Building Technology, Chicago
Additional Projects
Midwest
4901 Searle Parkway
Recognizing that it suffered from deteriorated and cracked masonry, water leakage, poor performing windows, aging roofs, and deteriorated metal panels, ALP engaged SGH to perform a comprehensive building enclosure assessment and develop a prioritized repair plan.