ASTM D6026-06

    Standard Practice for Using Significant Digits in Geotechnical Data


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    1. 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D653 Terminology Relating to Soil, Rock, and Contained Fluids

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E344 Terminology Relating to Thermometry and Hydrometry

    E456 Terminology Relating to Quality and Statistics

    E833 Terminology of Building Economics


    ICS Code

    ICS Number Code 07.020 (Mathematics)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard
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    DOI: 10.1520/D6026-06

    Citation Format

    ASTM D6026-06, Standard Practice for Using Significant Digits in Geotechnical Data, ASTM International, West Conshohocken, PA, 2006, www.astm.org

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