Dynamic Loaded Machine Foundation
Dynamic Loaded Machine Foundation
(OP)
I am designing a foundation for a 130,000 lb compressor with dynamic loads. The foot print of the equipment is over a 30X40 ft. area. It will have a separate mat foundation below it.
I have done some research and it appears to me a dynamic load such as this requires a special analysis to calculate the deflections based on the dynamics. I found several references on this, one in particular by Bowles in the 5th ed., chapter 20. He has a program to calculate the vertical, horizontal and rocking deflections due to the machine dynamics. Is the method he describes in his book what is commonly used in practice today? Is there an easier way to do this?
Bowles method requires the dynamic shear modulus. Are there some tables with typical values for clay soil other than what he has in his text? Bowles uses primarily metric in this chapter and doesn't have an equation for English dynamic modulus.
I would appreciate any suggestion I can get for foundation design of dynamic equipment loads.
I have done some research and it appears to me a dynamic load such as this requires a special analysis to calculate the deflections based on the dynamics. I found several references on this, one in particular by Bowles in the 5th ed., chapter 20. He has a program to calculate the vertical, horizontal and rocking deflections due to the machine dynamics. Is the method he describes in his book what is commonly used in practice today? Is there an easier way to do this?
Bowles method requires the dynamic shear modulus. Are there some tables with typical values for clay soil other than what he has in his text? Bowles uses primarily metric in this chapter and doesn't have an equation for English dynamic modulus.
I would appreciate any suggestion I can get for foundation design of dynamic equipment loads.





RE: Dynamic Loaded Machine Foundation
RE: Dynamic Loaded Machine Foundation
RE: Dynamic Loaded Machine Foundation
"Don't Gamble on Machinery Foundations" by William Kauffmann, 2 pages - 1973
"Principles of Foundation Design for Engines & Compressors" by W.K. Newcomb (Ingersoll-Rand), 7 pages - 1951
"Basic Vibration & Vibration Isolation Theory" by Unisor Machinery Installation Systems, 11 pages - mid 1980s
I hope you find them useful.
RE: Dynamic Loaded Machine Foundation
That book is "Design of Structures and Foundations for Vibrating Machines," by Suresh Arya, Michael O'neill and George Pincus. Published by Gulf Publishing Company, 1979, 1981. ISBN no. 0-87201-294-8. Library of Congress Catalog Card No. 78-56171.
Regards
RE: Dynamic Loaded Machine Foundation
RE: Dynamic Loaded Machine Foundation
"Don't Gamble on Machinery Foundations"
"Principles of Foundation Design for Engines & Compressors"
"Basic Vibration & Vibration Isolation Theory"
are now posted in .pdf format at
www.angelfire.com/mech/slideruleera
RE: Dynamic Loaded Machine Foundation
RE: Dynamic Loaded Machine Foundation
RE: Dynamic Loaded Machine Foundation
I am mechanical engineer so I profess no experise in foundation design but know that I would make sure the above was met as a minimum. As cheap as concrete is compared to the other project costs I would not take any chances by installing any smaller foundation.