In this video, we present a detailed comparison of the Equivalent Static Method (ESM) as per IS 1893:2016 and the latest IS 1893:2025 seismic code. This lecture explains the major changes in seismic force calculation, including: ✔ Difference between Sa/g (2016) and normalized spectral acceleration (2025) ✔ Change from effective PGA (Z/2) to full hazard-based PGA (Z) ✔ Concept of uniform hazard response spectrum ✔ Impact of code changes on base shear calculation ✔ Applicability and limitations of the Equivalent Static Method ✔ Why IS 1893:2025 is more performance- and hazard-based This video is extremely useful for: B.Tech & M.Tech Civil Engineering students GATE & ESE aspirants Structural design engineers Faculty teaching Earthquake Engineering Professionals using ETABS / STAAD / SAFE 📘 Based on Indian Standard IS 1893 (Part 1): 2016 & 2025 📐 Covers concepts required for seismic analysis of buildings 👉 Watch till the end to clearly understand why the seismic demand in IS 1893:2025 is more realistic than 2016. ✅ Don't forget to Like, Share, and Subscribe for more clear explanations and civil engineering tutorials! Follow for More Updates: 🔹 YouTube Channel: / @realcivil 🔹 WhatsApp Channel: https://whatsapp.com/channel/0029Va9L... Instagram: https://instagram.com/real.civil?igsh... Our telegram page : civil engineering video : https://t.me/realcivil #IS1893 #SeismicAnalysis #EquivalentStaticMethod #EarthquakeEngineering #StructuralEngineering #CivilEngineering #IS18932025 #IS18932016 #GATECivil #MTechStructures