Prime Civil Contractor is an established structural retro fitting contractor in Delhi NCR specializing in heavy building strengthening, seismic retrofitting, and structural rehabilitation. Compliant with Indian Standard IS 13935 (Guidelines for Repair and Seismic Strengthening of Buildings) and IS 15988 (Seismic Evaluation and Retrofit of Existing RCC Buildings), we execute engineered RCC column jacketing, structural steel encasement, high-strength micro-concreting, carbon fiber reinforced polymer (CFRP) wrapping, beam shear strengthening, and foundation underpinning. Whether adding additional floors to an existing residential building in South Delhi, upgrading industrial load capacity in Okhla, or restoring aged structural frames across Delhi NCR, our certified structural engineers provide non-destructive testing (NDT), calibrated hydraulic propping, and permanent structural load enhancement.
- Engineered RCC column jacketing expanding load-bearing capacity by up to 250%
- Seismic retrofitting for Delhi NCR Seismic Zone IV compliance and earthquake resistance
- Carbon Fiber Wrapping (CFRP/GFRP) for beam deflection control without adding dead weight
- Chemical shear dowel anchoring using Hilti pure epoxy capsules into parent concrete
- Micro-concreting encasement using self-compacting, non-shrink polymer formulations
- Foundation underpinning and soil stabilization for additional floor load additions
Frequently Asked Questions (FAQ)
What is retro fitting in civil construction and why is it needed?
Retro fitting (structural retrofitting) is the engineering process of strengthening, modifying, and upgrading an existing building structure to increase its load-bearing capacity, correct structural deficiencies, repair damage, or bring it into compliance with earthquake (seismic) safety codes without demolishing the building.
What is the cost of retro fitting and column jacketing in Delhi NCR?
Retro fitting costs in Delhi NCR depend on the structural method required. Standard RCC column jacketing with micro-concrete typically ranges between ₹1,800 to ₹3,500 per running foot of column (including rebar, chemical anchoring, shuttering, and high-strength M60 micro-concrete). Carbon fiber wrapping (CFRP) ranges between ₹350 to ₹650 per sq. ft. of wrapped structural surface. An on-site structural audit provides a finalized, itemized BOQ estimate.
Can you strengthen columns if we want to build an additional floor on an old house in Delhi?
Yes. Adding an extra floor or penthouse to an existing building in Delhi NCR is one of our primary retrofitting specialties. We conduct non-destructive testing, calculate load deficits, and execute column jacketing and foundation strengthening so your structure safely supports the additional vertical load while adhering to municipal MCD / DDA structural safety bylaws.
What is the difference between RCC column jacketing and Carbon Fiber (CFRP) wrapping?
RCC column jacketing involves adding a new steel reinforcement cage around the existing column and encasing it with high-strength micro-concrete, increasing both compressive capacity and column dimensions. Carbon fiber wrapping (CFRP) uses ultra-high-tensile carbon fabric bonded with epoxy resin; it provides massive shear confinement and tensile strengthening with virtually zero added thickness (under 5mm) and zero added dead weight.
Can retro fitting work be done while the building is occupied?
Yes. By installing calibrated heavy-duty steel props and hydraulic load-bearing towers, we safely transfer the structural weight away from individual columns or beams. This allows our specialized teams to work floor-by-floor or column-by-column without requiring the entire building to be evacuated.
How do you test and verify the strength of the retrofitted columns?
We conduct rigorous pre- and post-retrofit non-destructive testing (NDT), including Rebound Hammer tests (IS 13311 Part 2) to evaluate compressive strength, Ultrasonic Pulse Velocity (UPV) tests (IS 13311 Part 1) to confirm 100% void-free concrete density, and epoxy pull-out tests on chemically anchored dowels.
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Engineering Consultation & Site Visits: +91 7011331579 | Request Site Visit & Quotation
Address: Greater Kailash-1, Block S, Area, Greater Kailash, New Delhi, Delhi 110048