Buildings

Challenge:
A sudden deflection in the fourth-floor post-tensioned slab of this five-story parking garage led to an emergency closure and immediate structural shoring. The garage required urgent repairs to restore safety and functionality while minimizing disruption to campus operations.

Solutions Delivered:

• Crack injection to address structural fractures
• Repair of post-tensioned (PT) slabs
• Replacement of PT cables and anchors
• Comprehensive structural survey to assess damage and define repair scope
• Installation of an off-loading system to reduce column loads during repair
• Targeted remediation of concrete delamination and spalling

Despite tight deadlines tied to the academic calendar, Freyssinet completed the emergency repairs during the summer break, ensuring minimal disruption.

Read more about Freyssient’s scope of work >>>

Challenge:
Extend the life of the convention center’s unique hexagonal cable-supported roof system, which was showing signs of environmental wear.

Solutions Delivered:

• Specialized cable wrapping and structural restoration
• Custom-designed heating element to shrink and bond the wrap
• In-house fabrication of a custom water-infiltration cover at the mast saddle point
• Tailored materials and tooling developed by Freyssinet’s design team to meet the project’s one-of-a-kind requirements

This complex project highlights Freyssinet’s ability to deliver innovative, precision-engineered solutions for landmark structures to support long-term building preservation.

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Challenge: Structural modifications and increased mechanical loads required extensive strengthening across the International Monetary Fund headquarters, one of Freyssinet’s largest retrofit projects in the U.S.

Solutions Delivered:

• Design and installation of Foreva® TFC Fiber Reinforced Polymer (FRP) Composite System
• Strengthening of concrete slabs, beams, stair spandrels, and waffle slabs
• Replacement of disrupted steel reinforcement with NSM carbon fiber rods
• Shear strengthening using carbon anchors
• Blast-resistant design considerations for critical structural elements

Through advanced composite materials and precision engineering, Freyssinet ensured compliance with modern standards while supporting the IMF’s long-term operational goals.

Read more about Freyssient’s scope of work >>>

Objective:

Increase the building’s height by adding an additional floor.

Scope of Work:
To accommodate the new top floor, Freyssinet executed a complex hydraulic lifting operation, including:

• • Post-tensioning of the existing 9th-floor slab to enhance load-bearing capacity
  • Installation of steel lateral restraints to stabilize the structure before disconnecting upper levels
  • Precision concrete cutting to separate the top floor
  • Deployment of friction-based column clamping systems for secure lifting
  • Operation of 400-ton hydraulic jacks using a synchronized lifting system for controlled elevation

This project showcases Freyssinet’s advanced engineering capabilities in structural modification and adaptive reuse that are key aspects of modern building maintenance and redevelopment.