Column Jacketing Techniques PDF | RCC Structural Jacketing Services India
                     Column Jacketing Techniques for 
Load-Bearing Structures in India 
(2026 Guide)
India’s fast-growing skyline means older buildings are carrying more load than 
they were originally designed for. Whether you’re adding extra floors, upgrading 
for seismic compliance, or addressing aging RCC columns, column jacketing is 
one of the most effective structural retrofitting solutions available today.
If you’re searching for:
What is column jacketing??
Best column strengthening method for old buildings
RCC column repair techniques in India
How to increase load bearing capacity of columns
Column jacketing cost and process
This guide answers it all.
What is Column Jacketing?
Column jacketing is a structural strengthening technique where an existing 
column is encased with additional high-performance material. This “jacket” 
improves:
 Axial load capacity
 Shear strength
 Seismic resistance
 Ductility and durability
In simple terms: it gives weak or stressed columns a second life without 
demolishing the building.
3 Major Column Jacketing Methods Used in India
Professional structural retrofitting companies like Gubbi Civil Engineers Limited
select the technique based on structural audit findings, load requirements, and 
space constraints.
1. Reinforced Concrete (RCC) Column Jacketing
The most widely used method in commercial and residential buildings.
How it Works:
A new layer of reinforced concrete (with additional rebars and stirrups) is cast 
around the existing column.
Best For:
● Adding extra floors
● Severe structural damage
● Increasing load-bearing capacity significantly
Key Advantages:
● Excellent bonding with old concret
● Fire-resistant
● Long-term durability
● Suitable for heavy load upgrade
2. Steel Column Jacketing
This technique uses steel plates or steel angle frames around the column, filled 
with non-shrink grout.
Best For:
● Industrial buildings
● Vibration-prone structures
● Seismic strengthening
Key Advantages:
● Minimal increase in column size
● High strength gain
● Fast installation
● Ideal where floor space is limited
3. FRP (Fiber Reinforced Polymer) Jacketing
Also known as Carbon Fiber Wrapping, this is a modern lightweight 
strengthening method.
How it Works:
High-strength fiber sheets are bonded using epoxy resins.
Best For:
● Rapid repair projects
● Occupied buildings
● Space-restricted areas
Key Advantages:
● No major dimensional increase
● Corrosion-resistant
● Fast application
● Minimal operational disruption
When Does a Building Need Column Jacketing?
A professional structural audit typically recommends jacketing when:
Vertical Expansion
Planning to add extra floors to your building.
Seismic Non-Compliance
Older buildings not designed per IS 1893 earthquake code.
Material Deterioration
● Spalling concrete
● Exposed rusted rebars
● Deep structural cracks
● Corrosion damage
Design Errors
Structural deficiencies identified post-construction.
Step-by-Step Column Jacketing Process
At Gubbi Civil Engineers Limited, column strengthening is engineered, not 
improvised.
1. Structural Assessment and Load Analysis
Detailed structural audit and capacity calculation.
2. Shoring and Load Transfer
Temporary supports installed to relieve load safely.
3. Surface Preparation
Old concrete roughened for proper mechanical bonding.
4. Reinforcement Installation
Additional rebars anchored into foundation for structural continuity.
5. Jacketing Application
● RCC casting
● Steel encasing Or Shotcrete application for dense finish
6.  Quality Testing and Curing
Ensuring strength, bonding, and durability.
Does Column Jacketing Reduce Room Space?
● RCC jacketing: 75mm-150mm increase per side
● Steel / FRP: Minimal or negligible increase
If usable area is critical, FRP jacketing is usually recommended.
Can Column Jacketing Repair Fire-Damaged Columns?
Yes. It is one of the most reliable methods to restore fire-damaged RCC columns 
and prevent progressive structural failure.
How Long Does Column Jacketing Take?
● FRP wrapping: Few days
● Steel jacketing: Moderate duration
● RCC jacketing: Few weeks (due to curing time)
Timeline depends on number of columns and site conditions.
Is Column Jacketing a Permanent Solution?
When designed by qualified structural engineers and executed professionally, 
column jacketing can extend a building’s life by 25-50 years.
Frequently Asked Questions 
What is the cost of column jacketing in India?
Cost depends on column size, damage level, and method used (RCC, steel, or 
FRP). A structural audit is required for accurate estimation.
Which is better: RCC or FRP column jacketing?
RCC is ideal for heavy load upgrades. FRP is best for fast, lightweight 
strengthening with minimal space impact.
Can column jacketing increase building height capacity?
Yes. When properly engineered, it can allow safe addition of floors.
Final Thoughts: Strengthen Before It’s Too Late
Ignoring stressed columns can lead to progressive structural failure, safety risks, 
and major financial loss.
If you notice cracks, corrosion, or are planning vertical expansion, a professional 
structural audit is the first step.
Secure your investment. Protect your people. Strengthen your 
structure now.