This test method covers the determination of the hydraulic
conductivity (permeability) of essentially saturated, intact
cylindrical specimens of peat when the hydraulic conductivity is
greater than 1 3 10−7 m/s (1 3 10−5 cm/s).
During the test, the specimens are contained in the core holder, or
in right, regular cylindrical sections cut from the sampling tube
in which they were originally obtained in the field.
Hydraulic conductivity is calculated on the basis of the
measured constant flow rate through the specimen under constant
head.2 For verification, flow rate determinations may be
made at two or more values of constant head with corresponding
calculations of hydraulic conductivity.
Units—The values stated in SI units are to be regarded
as the standard. The inch-pound units given in parentheses are
mathematical conversions, which are provided for information
purposes only and are not considered standard.
The converted inch-pound units use the gravitational system of
units. In this system, the pound (lbf) represents a unit of force
(weight), while the unit for mass is slugs. The converted slug unit
is not given, unless dynamic (F = ma) calculations are
All observed and calculated values shall conform to the guide
for significant digits and rounding established in Practice
The procedures used to specify how data are collected/ recorded
and calculated in this standard are regarded as the industry
standard. In addition, they are representative of the significant
digits that should generally be retained. The procedures used do
not consider material variation, purpose for obtaining the data,
special purpose studies, or any considerations for the user's
objectives, and it is common practice to increase or reduce
significant digits of reported data to be commensurate with these
considerations. It is beyond the scope of this standard to consider
significant digits used in analysis methods for engineering
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
*A Summary of Changes section appears at the end of this