This video provides an in-depth overview of Earthquake, Geotechnical, and Fire Hazards affecting concrete and structural systems. Drawing lessons from the 2015 Nepal Earthquake and real fire-damage case studies, it explains how structures fail, how to assess post-disaster conditions, and what strategies can be adopted for safer, resilient design and construction.

Key Topics Covered:

• Earthquake Hazards: Ground shaking, structural collapse, lessons from Nepal 2015

• Geotechnical Hazards: Liquefaction, landslides, soil instability, and foundation failures

• Fire Hazards: Post-fire damage in concrete structures, reinforcement degradation, and bond failure

• Damage Assessment: Visual inspection, colour change, spalling, cracks, NDT methods (Rebound Hammer, Ultrasonic Pulse Velocity), reinforcement evaluation

• Repair & Rehabilitation: Grouting, epoxy injection, jacketing, FRP, advanced strengthening methods

• Retrofitting Strategies: Seismic detailing, base isolation, soil improvement, structural upgrading, and fire protection techniques

• Design Considerations: Structural configuration, ductility, material quality, soil suitability, building codes, and disaster-resilient design principles