- Solutions:
Exposed connections to host structure were evaluated. Panels were removed and replaced to maintain uniform service life with new pre-stressed units. A supplemental pipe rail which met safety code for guard height was incorporated. Panels were sounded and mapped in the field to identify spalled surfaces, top and bottom edges. Sealants were removed and replaced with low modulus material to provide long lasting flexibility; balcony decks were stripped and recoated with waterproof membrane that featured abrasion resistant topcoat with broadcast slip-resistant aggregate.
- Project Scope:
- 14 Panels deteriorated more than 50% of gross area beyond repair
- 31 Precast panels removed and replaced
- 14 second level balconies waterproofed
- Construction Cost: $460,000
Project Details:
Tampa Fire Station, No. 1
- Project Description:
TRC Worldwide Engineering, Inc. was selected to restore the City’s aging and weather damaged fire station. This three–story concrete facility features second floor balconies constructed with pre-cast panels, spanning between demising third floor walls.
- Challenges:
Loose concrete fragments presented a safety hazard to pedestrian walkways below. 30-year-old precast panels displayed extensive spalling due to corrosion of the reinforcement bars, wire mesh and embedded plate connections. 8 Upper level valance panels with compromised end connections were identified. The bearing ends exhibited loss of gross concrete cross sectional area at critical shear locations. Long-term weathering resulted in sealant failure, which enabled moisture intrusion at abutments to load bearing demising walls.
