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Critique of the Rock Material Field Classification Procedure / John S. Moore

Conference Author
Rock Classification Systems for Engineering Purposes (1987 : Cincinnati, Ohio)
Published
West Conshohocken, Pa. : ASTM International, 1988.
Physical Description
1 online resource (7 pages) : illustrations, figures, tables
Additional Creators
Moore, John S., American Society for Testing and Materials, and ASTM International
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Summary
The Soil Conservation Service uses the Rock Material Field Classification Procedure (TR-71) to classify rock and assess rock performance for engineering purposes. The classification process consists of identifying the rock units at the site of investigation and describing the rock in terms of its rock material, rock mass, and hydrogeologic properties. The performance assessment is the selection of performance objectives according to the engineering use of the rock. Objectives include erosion resistance, excavation characteristics, construction quality, water transmission, and rock mass stability. The rock is then classified according to criteria in the appropriate performance assessment tables. The procedure uses established methods and tests developed in some widely accepted rock mass classifications, particularly the Unified Rock Classification System (URCS). The URCS is included in its entirety in Appendix I of TR-71 as a convenient reference, since it is a major part of three of the five performance assessment tables. The prominent attributes of the procedure include: (1) rock can be classified according to its intended use, (2) terms are nontechnical and unambiguous, (3) classification elements are based on observable and measurable field conditions, 4) significant properties can be quickly tested in the field, (5) the need for additional evaluation can be recognized, and (6) a rock mass can be assigned to groups with similar behavior. The main caveats of the procedure include: (1) some of the criteria in the performance assessment tables are empirical, (2) the procedure is new and not widely accepted, and (3) the classification elements are not weighted.
Dates of Publication and/or Sequential Designation
Volume 1988, Issue 984 (January 1988)
Subject(s)
Other Subject(s)
ISBN
0803109881
9780803166639
9780803167759 (e-ISBN)
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 14.
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Also available in PDF edition.
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1988. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
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