Cost optimisation methods in chimney design
M. Angelides
CICIND REPORT Vol. 11, No. 2, 1995
Order No: CR-010
Once its height and top diameter are fixed (usually by the client), the cost of a concrete chimney is largely decided at the preliminary design stage by the geometrical profile chosen. The paper describes an iterative, computerised preliminary design procedure that allows a designer to optimise the profile and bottom diameter, to give the lowest construction cost. A case study was provided of 200m tall chimney recently constructed in Greece. Initially upper bound and lower bound profiles were defined. The first iteration produced a design and cost estimate. After 11 iterations a final profile had been developed, estimated to cost about 70% of the initial design.