Summary
FPrimeC Solutions was retained by a Forensic Engineering frim in Toronto to perform a detailed forensic examination of fire damaged concrete slab at exterior balcony in a high-rise condominium in downtown Toronto, using non-destructive testing methods. The balcony soffit exhibited visible signs of fire damage, including soot deposits, spalling, and cracking. The primary goal of this study was to assess the concrete’s structural integrity, and identify the extent of defects.
Scope of Work
The investigation included:
- Digital Visual inspection and sounding of the concrete.
- Non-destructive evaluation (NDE) using Rebound Hammer and Ultrasonic Pulse Velocity (UPV) testing to determine concrete quality and uniformity.
- Ground Penetrating Radar (GPR) scans to identify rebar layout and assess sub-surface anomalies.
Key Observations and Findings
Digital inspection was performed using advanced LiDAR system to map all existing cracks, and other surface anomalies, such as concrete delamination and spalling. Ultrasonic Pulse Velocity and Rebound hammer were utilized to identify the extent of poor quality concrete.
The Ground Penetrating Radar was used to verify the spacing and cover thickness, and verify the relationship between existing cracks and the rebar pattern.