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Punching Shear Repaired with V-Wrap™ CFRP System

Location: Florida
Repair & Strengthening Contractor: STRUCTURAL

During construction of a 23-story luxury condominium, punching shear damage in six columns caused by slab overloading was repaired through coordinated emergency strengthening measures, enabling the project to be completed under budget and ahead of schedule.

Bottom surface FRP sheet installation
Top surface installation of CFRP bars
Full/Partial Depth Repair
Concrete Pour
Bracing of columns
No visible distress, but this column is deficient in negative moment and shear
SOLUTIONS:

PROJECT DETAILS

During construction of a 23-story luxury condominium, an area of the slab became overloaded with materials causing punching shear in six columns. The emergency repair required various strengthening techniques including the installation of 9” drop panels and near surface mount (NSM) rods on all six columns, full-depth demolition and new steel around two of the columns, and epoxy injection prior to the installation of STRATA’ V-Wrap™ C200H CFRP system.

STRATA worked closely with the general contractor and engineer of record to provide design assistance and to install our strengthening solutions. This collaboration kept the project under budget and allowed for it to be completed ahead of schedule.

highlights

Investigate Design Build project to address punching shear caused by overloading the area with material.
V-Wrap™ C200H CFRP system installed to strengthen the six columns effected by the punching shear.
Completed project ahead of schedule and under budget.

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