40. Codal Provisions
The chapter outlines essential codal provisions for seismic design in structures, specifically focusing on guidelines from IS 1893 and IS 13920 relevant to earthquake resistance. It covers seismic zoning, design coefficients, ductile detailing, and integration of non-structural elements to enhance structural resilience. Additional topics include load combinations, retrofitting techniques, and provisions for specialized structures such as bridges and water tanks.
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What we have learnt
- Understanding of seismic zoning in India is crucial for appropriate structural design.
- Ductile detailing is mandatory for resilience against seismic forces in crucial zones.
- Quality control and supervision significantly influence the performance of structures during earthquakes.
Key Concepts
- -- Seismic Zones
- Classification of regions in India based on their seismic risk, ranging from Zone II (low risk) to Zone V (very high risk).
- -- Ductile Detailing
- Design practices aimed at enhancing the energy absorption capacity of concrete structures under seismic loading.
- -- Base Isolation
- A technique to reduce seismic forces on structures by introducing flexibility at the foundation level.
Additional Learning Materials
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