Abstract
A new permeability test is proposed which is conducted on an undisturbed sample encased in a thin-wall sampler. Two rows of small holes are drilled diametrically opposite on the side of a thin-wall tube. Water under constant pressure is supplied through the holes and fed into the soil sample to maintain a steady seepage flow in it. The seepage thus obtained makes it possible to compute the coefficient of permeability in the horizontal direction of the whole sample and to evaluate realistic mass permeability for a stratum of a soft cohesive soil with substantial thickness.
