On the Theory of Bin Loads

Abstract

It is proposed that three loading conditions should be considered in the analysis of loads acting on a bin: Initial loading which occurs when bulk solid is charged without any of it being withdrawn, flow loading which occurs after flow has been established, and switch loading which occurs during the switch from initial to flow loading. The last is transient but, while it acts, it exerts large concentrated forces. The importance of the flow pattern is outlined and an expression is given for the high local force which frequently acts at the transition from the vertical part to the converging part of a bin.