Soil Mechanics and Foundation
The slope of isochrone at any point at a given time indicates the rate of change of

pore water pressure with depth
effective stress with depth
pore water pressure with time
effective stress with time

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Soil Mechanics and Foundation
Degree of consolidation is

directly proportional to time and inversely proportional to drainage path
directly proportional to drainage path and inversely proportional to time
directly proportional to time and inversely proportional to square of drainage path
directly proportional to square of drainage path and inversely proportional to time

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