Title: Comparison of Several Methodologies Used for Designing Tabletop Foundations
Author(s): Mukti Lal Das
Publication: Symposium Paper
Appears on pages(s): 35-46
Keywords: Rule-of-thumb, Eigenvalues, Rayleigh frequencies, Turbine force amplitude
The availability of high-speed computers at a reasonable price resulted in various sophisticated analysis
and design methodologies for the elevated flexible pedestal (Tabletop) foundations replacing the rule-of-thumb
processes based on static equivalent principle which used to produce either unsafe or overly conservative structures.
A thorough study is undertaken with four typical models usually selected for static and dynamic analyses
in the structural/mechanical engineering practice. It is found that all the models provide comparable results. However,
each one has its own advantages and disadvantages. These will be highlighted in the Summary and Concluding
Remarks of this paper.