These test methods are limited to the determination of the
velocity of two types of horizontally travelling seismic waves in
soil materials; primary compression (P-wave) and secondary
shear (S-wave) waves. The standard assumes that the method
used to analyze the data obtained is based on first arrival times
or interval arrival times over a measured distance.
Acceptable interpretation procedures and equipment, such as
seismic sources, receivers, and recording systems are discussed.
Other items addressed include borehole spacing, drilling, casing,
grouting, deviation surveys, and actual test procedures.
These test methods are primarily concerned with the actual test
procedure, data interpretation, and specifications for equipment
which will yield uniform test results.
All recorded 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 these test methods are regarded as the industry
standard. The procedures used do not consider material variation,
purpose for obtaining the data, special purpose studies, or any
considerations for the user's objectives. Measurements made to more
significant digits or better sensitivity than specified in these
test methods shall not be regarded a nonconformance with this
Units - The values stated in either SI units or
inchpound units [presented in brackets] are to be regarded
separately as standard. The values stated in each system may not be
exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems
may result in non-conformance with the standard. Reporting of test
results in units other than SI shall not be regarded as
nonconformance with this test method.
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
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