Construction Sequence Analysis (CSA) is a method that follows real-time onsite
construction practices like construction sequence, sequential loading, and
timing. Properties of concrete, like Creep and shrinkage are time-dependent
properties of concrete, so it is crucial to determine the period up to which critical
responses are received during a building’s life. This study observes the different
responses of structural members seeing the long-term effect of concrete
properties for up to 50 years, cohesive to the standard lifespan of RC structures
in India. The study derives the most critical time during the entire life of the
building using the CSA method. According to this study, 98% to 99% of the 50thyear responses are attained within 10950 days after applying live load. The study
recommends analysing RC structures for 10950 days using the CSA method
instead of ending at the time of live load application or continuing analysis up to
50 years. It is important to know the limit of total storeys above which the
behaviour of vertical members becomes vulnerable in RC buildings. The study
also determines the critical storey limit of RC moment frame building over which
the CSA method must be utilised. Hence,this study uses the CSA and Linear Static
Analysis method to analyse 12 RC building models of various beam spans and
total storeys. The study concludes that the CSA method should be mandatory for
buildings with more than nine stories.
