This British Standard, a part of the BS 1377 series, specifies methods of test for the determination of consolidation and permeability characteristics of saturated soils using apparatus which is more complex than that used for the tests described in BS 1377-5.
Two types of equipment are used:
a) a hydraulically loaded one-dimensional consolidation cell
b) a triaxial consolidation cell.
The most significant capabilities of both types of apparatus are:
1) measurement of pore water pressure
2) control of drainage
3) application of backpressure to the specimen.
Consolidation or triaxial cells of large diameter enable large specimens to be tested so that some account can be taken of the effects of the soil fabric.
These procedures appear for the first time in this standard.
Reference should be made to BS 1377-1 for general requirements that are relevant to all Parts of this standard, and for methods of preparation of soil and specimens for testing.