Midwest
Eleven40
Topping out at twenty-six stories, Eleven40 on South Wabash Avenue brings 320 rental apartments to Chicago’s South Loop neighborhood. SGH consulted on the building enclosure design for the project.
Chicago, IL
325 North Ashland Avenue
Scope/Solutions
The 80,000 sq ft building in Chicago’s Fulton Market neighborhood was constructed in the early 1950s as a manufacturing facility. Potential buyers were considering redeveloping the property for use as office space or a data center, and the owner wanted to evaluate the feasibility of adding two occupiable levels (a floor and roof deck) to the existing cast-in-place concrete structure. SGH evaluated the existing structure’s ability to support the proposed vertical addition and proposed strengthening concepts for the gravity- and lateral-load-resisting systems.
Using original drawings, building operations records, and improvement logs to determine the existing configuration, SGH evaluated the structure’s ability to support the new loads associated with adding the two new levels. We developed conceptual design options for the following:
- Supporting the new occupiable floor on the existing roof by either strengthening the concrete slab with new steel plates or adding a floor overbuild
- Supplementing the lateral-load-resisting system to accommodate new loads from the vertical expansion
We presented these concepts in a feasibility study report prepared for the owner and potential buyers to obtain order-of-magnitude pricing.
1 of 4
Project Summary
2018
Completion Date
Solutions
New Construction | Repair & Rehabilitation
Services
Structures
Markets
Commercial | Industrial
Client(s)
Transwestern | Rickard Circular Folding Company
Specialized Capabilities
Building Design | Repair & Strengthening
Key team members
Additional Projects
Midwest
Harlem Irving Plaza
The shopping mall at 4104 Harlem Avenue was constructed in the mid-1950s. The owner wanted to reinvent the Harlem Irving Plaza by subdividing the former Carson Pirie Scott department store into multiple tenant spaces and adding elevators and escalators within a new three-story atrium to improve connectivity between floors. SGH designed structural modifications for the renovations.