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Current practice in construction of tower silo foundations is usually based on local experience without the benefit of a soils investigation. The trend towards the erection of larger and larger tower silos has led to serious foundation problems with these structures. A few failures of tower silos have occurred in Ontario (Bozozuk 1972 Eden and Bozozuk 1962) attributable to inadequate bearing capacity of the subsoil to support the superimposed load. Many others have tilted or settled appreciably, affecting their performance. On the other hand, silos up to 37 m in height have been constructed on soft clays of the Wallaceburg-Chatham-Windsor area without any serious distress. In Southwestern Ontario alone, 7600 silos were constructed in the 5-yr period between 1972 and 1976. This represents an annual expenditure of some $18 million. Thus, a better understanding of the foundation behavior of tower silos leading ultimately to economical and adequate foundation design appears to be of economic significance.
settlement and load transfer of ring foundation for tower silos
Becker, D.E. and K.Y. Lo 1979. SETTLEMENT AND LOAD TRANSFER OF RING FOUNDATION FOR TOWER SILOS. Canadian Agricultural Engineering 21(2):97-110.
97 - 110