Buildings constructed in Chennai during the 1980s, 1990s, and early 2000s face a common set of structural challenges: rebar corrosion from inadequate concrete cover, concrete spalling from decades of salt-air exposure, foundation settlement in soft-clay localities, and structural modifications made without engineering oversight. Buildogram coordinates specialist structural audits for ageing buildings — giving owners, buyers, and managers a clear picture of structural health and a practical repair roadmap.
How We Support You
Comprehensive Visual Inspection
Systematic inspection of all visible structural elements — columns, beams, slabs, staircase, terrace, and foundation zone.
Corrosion & Spalling Assessment
Document all instances of rebar corrosion (rust staining, bar exposure), concrete spalling, and delamination.
Crack Mapping & Classification
Map all cracks by type, width, and probable cause — distinguishing structural from non-structural.
Settlement & Deflection Check
Assess signs of differential foundation settlement, floor deflection, and structural movement.
NDT Testing Coordination
Coordinate Rebound Hammer and UPV testing to assess residual concrete strength quantitatively.
Structural Health Report & Repair Plan
Written report classifying findings by severity and recommending a prioritised repair and retrofit pathway.
Frequently Asked Questions
How old does a building need to be to require a structural audit in Chennai?
Buildings over 15 years old benefit from structural audit, especially in Chennai's tropical, coastal environment. Buildings over 25 years old should be audited regardless of visible condition, as internal rebar corrosion can be advanced before external signs appear.
What structural problems are most common in old Chennai buildings?
Most common issues: rebar corrosion (inadequate concrete cover + coastal humidity), concrete spalling in terraces and external elements, foundation settlement in flood-prone areas, improper modifications (additional floors, wall removals), and leakage-related structural deterioration.
Can an old building be repaired or does it need to be demolished?
Most old buildings can be repaired with appropriate intervention — rebar treatment, concrete jacketing, crack injection, waterproofing, and foundation underpinning. The Structural Audit Report gives you a clear answer on repair vs rebuild based on actual structural assessment.
Is a structural audit required for property purchase in Chennai?
Not legally required, but strongly recommended for any building over 15 years old. A structural audit report protects the buyer from inheriting hidden structural liabilities and provides negotiating leverage if deficiencies are found.
What is the difference between a visual inspection and NDT testing for old buildings?
Visual inspection documents external evidence of structural distress. NDT (Rebound Hammer, UPV) quantitatively assesses residual concrete strength and detects internal voids or cracks. For buildings over 20 years old, Buildogram recommends combining both approaches.
Ready to get started?
Talk to a Buildogram engineer today. No obligation, no sales call — just engineering clarity.