The Fitzgerald at UB Midtown

Project Details:

Owner: University of Baltimore
General Contractor: Bozzuto Construction Company
Duration of Work: 12 weeks
Subsurface Conditions: Upper uncontrolled fill layer underlain by dense silty sands and/or weathered bedrock
Approximate Key Quantities: 1,400 Controlled Modulus Column (CMC)® rigid inclusions

Project Overview:

The Fitzgerald at UB Midtown is a major public-private development on the University of Baltimore campus and part of the University’s ongoing rejuvenation of central Baltimore, Maryland. The Fitzgerald comprises 275 luxury apartments, 24,000 square feet of street-level retail and a 1,245 space public parking garage. The southern section of the building consists of a five-story apartment building with a retail ground level. The northern section consists of an eight-story precast concrete parking structure with an adjacent six-story residential building over one level of parking.

To eliminate the need for heavy pile caps and grade beams associated with deep foundations, Menard proposed a design-build ground improvement solution using Controlled Modulus Column (CMC)® Rigid Inclusions.

Ground Conditions:

The Fitzgerald is located on a 125,000 square foot site of a former freight depot and a surface parking lot. The subsurface conditions consisted of an upper uncontrolled fill layer of approximately 8.5 to 28.5 feet, underlain by dense silty sands and/or weathered bedrock at depths ranging from 17 to 32 feet.

Solution:

To support the foundations, Menard installed approximately 1,400 CMC Rigid Inclusions to stiffen the ground and reduce settlement within design specifications.

By implementing the CMC Rigid Inclusions solution, Menard was able to provide a number of cost-saving benefits to the project: removing piles, costly heavy pile caps, and grade beams, eliminating potential settlement from the fill on the site, and expediting the schedule by working around building sections still in the design process thus limiting the turnaround time of the CMC Rigid Inclusions re-design.

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