Standard Terminology Relating to Soil, Rock, and Contained Fluids
|Publication Date:||1 December 2003|
|ICS Code (Soil quality and pedology in general):||13.080.01|
|ICS Code (Environment. Health protection. Safety (Vocabularies)):||01.040.13|
A number of the definitions include symbols and indicate the units of measurement. The symbols appear in italics immediately after the name of the term, followed by the unit in parentheses. No significance should be placed on the order in which the symbols are presented where two or more are given for an individual term. The applicable units are indicated by capital letters, as follows:
F - Force, such as pound-force, ton-force, newton
L - Length, such as inch, foot, millimeter
T - Time, such as second, minute
D - Dimensionless
Positive exponents designate multiples in the numerator. Negative exponents designate multiples in the denominator. Degrees of angle are indicated as "degrees."
Expressing the units either in SI or the inch-pound system has been purposely omitted in order to leave the choice of the system and specific unit to the engineer and the particular application, for example:
FL−2 - may be expressed in pounds-force per square inch, kilopascals, tons per square foot, etc.
LT−1 - may be expressed in feet per minute, millimeters per second, etc.
Where synonymous terms are cross-referenced, the definition is usually included with the earlier term alphabetically. Where this is not the case, the later term is the more significant.
Definitions marked with (ISRM) are included for the convenience of the user and were taken directly from the International Society for Rock Mechanics. For a list of ISRM symbols relating to soil and rock mechanics, refer to Appendix X1.
See Reference section at the end of this standard.