REDUCTION IN DYNAMIC LOAD IN RC CHIMNEY BY STRAKES PROVISIONS
Keywords:
Identical, Cluster, Vortex shedding, Aerodynamic Interference, PCB, Strakes.Abstract
The Industrial growth of the any developing country like India is fast but the
development of Research Centers are not supporting the development specially in a
special structures like RC chimney, The effect of Aerodynamic Interference in chimney
specially provided in cluster with their distance is within the 20 times 2/3 of top diameter . Also
when the Height of RC chimney is increasing to fulfill the norms of Pollution control Board.
This increase in height of RC chimney will increase the dynamic wind load pressure which also
requires to reduce these loading as in case of cluster of chimney. To reduce this dynamic loading
we can reduce the effective design moments at the base of chimney by strakes provisions at top
1/3 height to 1/2 height of chimney to ensure stability and safety. The idea about both tall
identical chimney and cluster of chimney is shown in the paper to help the designer about
safety and economy and thus helping to maintain the standard of PCB.
