21/12/2025
Retro-fitting of Old Column
Retro-fitting means strengthening an old or weak RCC column without demolishing the structure.
When it is needed....
Cracks in the column
Corrosion of steel bars
Increased load (additional floors)
Earthquake damage
Low concrete strength
Common Methods
1. RCC Jacketing, adding new reinforcement and concrete around the column
2. Steel Jacketing, fixing steel plates or angles
3. FRP Wrapping wrapping fiber sheets (costly)
Benefits
Increases strength and safety,
Cost-effective solution,
Extends building life.
RCC jacketing is the most common and reliable method for retro-fitting of old columns.
