ABSTRACT
The pressures on silo walls are often measured using pressure cells mounted in the wall. Recent research has shown that the patterns of pressure are often very complex (e.g. Munch-Andersen and Nielsen, 1990; Ooi, Pham and Rotter 1990), so a comprehensive picture can only be obtained with very many instantaneous measurements. The cost of making and installing reliable cells is relatively high, and the number of cells needed to character ize a complex pressure distribution is large.
