Standard Practice for Using Significant Digits in Geotechnical Data

SIGNIFICANCE AND USE
The guidelines presented in this practice for retaining significant digits and rounding numbers may be adopted by the using agency or user. Generally, their adoption should be used for calculating and recording data when specified requirements are not included in a standard.
The guidelines presented herein should not be interpreted as absolute rules but as guides to calculate and report observed or test data without exaggerating or degrading the accuracy of the values.
4.2.1 The guidelines presented emphasize recording data to enough significant digits or number of decimal places to allow sensitivity and variability analyses to be performed, see 3.2.
SCOPE
1.1 This practice is intended to promote uniformity in recording significant digits for measured and calculated values involving geotechnical data. The guidelines presented are industry standard, and are representative of the significant digits that should generally be retained. The guidelines 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 practice to consider significant digits used in analysis methods for engineering design..
1.1.1 Using significant digits in geotechnical data involves the processes of collecting, calculating, and recording either measured values or calculated values (results), or both.
1.2 This practice accepts a variation of the traditional rounding method that recognizes the algorithm common to most hand-held calculators, see . The traditional rounding method (see ) is in accordance with Practice E 29 or IEEE/ASTM SI 10.
1.3 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word "Standard" in the title of this document means only that the document has been approved through the ASTM consensus process.

General Information

Status
Historical
Publication Date
31-Oct-2006
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D6026-06 - Standard Practice for Using Significant Digits in Geotechnical Data
English language
5 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D6026 −06
StandardPractice for
1
Using Significant Digits in Geotechnical Data
This standard is issued under the fixed designation D6026; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
1.1 This practice is intended to promote uniformity in 2.1 ASTM Standards:
recording significant digits for measured and calculated values D653Terminology Relating to Soil, Rock, and Contained
involving geotechnical data. The guidelines presented are Fluids
industry standard, and are representative of the significant D2905Practice for Statements on Number of Specimens for
3
digits that should generally be retained. The guidelines do not Textiles (Withdrawn 2008)
consider material variation, purpose for obtaining the data, D4356Practice for Establishing Consistent Test Method
3
special purpose studies, or any considerations for the user’s Tolerances (Withdrawn 2007)
objectives; and it is common practice to increase or reduce D6913Test Methods for Particle-Size Distribution (Grada-
significant digits of reported data to be commensurate with tion) of Soils Using Sieve Analysis
these considerations. It is beyond the scope of this practice to E29Practice for Using Significant Digits in Test Data to
consider significant digits used in analysis methods for engi- Determine Conformance with Specifications
neering design. E344Terminology Relating to Thermometry and Hydrom-
1.1.1 Using significant digits in geotechnical data involves etry
the processes of collecting, calculating, and recording either E456Terminology Relating to Quality and Statistics
measured values or calculated values (results), or both. E833Terminology of Building Economics
IEEE/ASTM SI 10 Standard for Use of the International
1.2 This practice accepts a variation of the traditional
System of Units (SI): The Modern Metric System
rounding method that recognizes the algorithm common to
most hand-held calculators, see 5.2.3.The traditional rounding
3. Terminology
method (see 5.2) is in accordance with Practice E29 or
IEEE/ASTM SI 10.
3.1 Definitions:
3.1.1 For common definitions of soil and rock terms in this
1.3 This practice offers a set of instructions for performing
standard, refer to Terminology D653.
one or more specific operations. This document cannot replace
3.1.2 accuracy, n—thedegreeofagreementofanindividual
education or experience and should be used in conjunction
measurement or average of measurements with an accepted
with professional judgment. Not all aspects of this practice may
reference value, or level. See Terminology E344-97
be applicable in all circumstances. This ASTM standard is not
intended to represent or replace the standard of care by which 3.1.3 calculated value, n—theresultingvaluedeterminedby
the adequacy of a given professional service must be judged, processing measured value(s) using an equation. See Practice
nor should this document be applied without consideration of D4356-84(Reapproved 1996).
a project’s many unique aspects. The word “Standard” in the 3.1.3.1 Discussion—Inmanycasesthecalculatedvalue(s)is
title of this document means only that the document has been considered a determination value(s).
approved through the ASTM consensus process.
1 2
This practice is under the jurisdiction of ASTM Committee D18 on Soil and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Rockand is the direct responsibility of Subcommittee D18.91 on Standards contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Development and Review. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Nov. 1, 2006. Published December 2006. Originally the ASTM website.
e1 3
approved in 1996. Last previous edition approved in 2001 as D6026–01 . DOI: The last approved version of this historical standard is referenced on
10.1520/D6026-06. www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6026−06
3.1.4 determination value, n—the numerical quantity calcu- 3.2.2.1 Discussion—A variability analysis might include
lated by means of the test method equation from the measure- how a given property varies with depth.
ment values obtained as directed in a test method. See Practice
4. Significance and Use
D4356-84(Reapproved 1996).
4.1 The guidelines presented in this practice for retaining
3.1.5 measurement value, n—theresultingvaluedetermine
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.