P-DELTA ANALYSIS OF RCC WATER TANK IN DIFFERENT SEISMIC ZONES

Abstract - Elevated Water tank structures also known as Over Head Tanks (OHT) or Elevated Service Reservoir (ESR) are required to store the clear water or drinkable water that is coming from the Water treatment plant unit. These tanks will be used to supply drinkable water to households. ESR can be in different types in shape like Rectangular or Circular or Intze. Since these are elevated structures, these should not be treated like regular structures and analysis of these structures shouldn’t be done in linear static analysis only. Non-linearanalysis should be done insuch a way that, behaviour of the structure is safe against the resultant behaviour.P-Delta analysis is considered to do the non-linear analysis for an Intze tank. P-Delta analysis also known as second order analysis.The analysis results are compared for the Intze(ESR)located in different seismic zones i.e. Zone-II, Zone-III, Zone-IV & Zone-V.The whole analysis is done by using STAAD.Pro 2023 connect edition. KEYWORDS-P-Delta Analysis, STAAD. Pro, ESR, Intze, OHSR, OHT, Nonlinear Analysis.