Doubts in GIN Principle Confirmed
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In rock grouting the custom has evolved of using individual concepts in order to comply with a given geological setting. A very high grouting pressure, for instance, may be adequate for case A but dangerous for case B. The diversity of nature calls for specifically-adapted concepts. This, however, is not always understood. Engineers used to well-defined standards and sometimes irritated by uncertainties occurring in rock grouting are inclined to consider standardized concepts as, for instance, the GIN principle proposed by Lombardi & Deere.