The paper concerns a range of applicability in evaluation of coefficient of permeability on the basis of indirect approach in various soils. Considered indirect approach is based on Casagrande and Taylor’s methods of determination of coefficient of consolidation (cv). Tests were carried out on six kinds of soils containing various amount of fines from the range 9–99,5%. Specimens were reconstituted in medium size consolidometer and then loaded in stages. Independently, coefficient of permeability was determined directly by flow pump technique at the end of consolidation stage for each material. Convergence of results of both methods was assumed as criterion of evaluation of range of applicability of indirect approach in determination of coefficient of permeability with respect to grain size distribution.

79-89