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Description of ASTM-D4879 2008ASTM D4879 - 08Standard Guide for Geotechnical Mapping of Large Underground Openings in RockActive Standard ASTM D4879 | Developed by Subcommittee: D18.12 Book of Standards Volume: 04.08 ASTM D4879Significance and Use The geotechnical map resulting from application of the procedures set forth in this guide is permanent documentation which may be used in the following ways: 4.1.1 Compilation of basic geotechnical information. 4.1.2 Design verification. 4.1.3 Evaluation of preconstruction assumptions. 4.1.4 Instrumentation location and data analyses. 4.1.5 Identification and location of problems and potential problems. 4.1.6 Provision of records for cost and claims adjustments. 4.1.7 Provision of information useful in future similar or nearby projects. Construction or safety considerations may limit the ability to map to the full extent of the procedures of this guide. There are significant benefits to mapping as close to the advancing face of the opening as is feasible, depending upon safety and logistical considerations. Mapping emphasis should be placed on those geotechnical features which are anticipated or are found to affect overall performance of the excavation. Dust, water, lack of light, limited exposures, or other physical factors may affect the quality of the mapping. 1. Scope 1.1 This guide recommends procedures for mapping large subsurface openings made for either civil or mining purposes. 1.2 The mapping provides characterization and documentation of the condition of the rock mass at the excavation surface. 1.3 The mapping may be accomplished during or after excavation; however, if possible, the mapping should be completed before construction activity modifies or obscures the surface condition and especially any critical geologic features. 1.4 The mapping level of detail shall be appropriate for its intended use. This mapping does not replace rigorous investigations to develop physical or mathematical models of behavior. 1.5 When soil or soil-like materials are encountered in the excavation, they should also be appropriately mapped and described in accordance with applicable ASTM standards. 1.6 Many of the procedures presented in this guide may be used, as well, to map surface excavations. 1.7 The mapping does not replace the surveying of excavation geometry. 1.8 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026 1.9 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard 1.10 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. 1.11 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide 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.
ASTM Standards D420 Guide to Site Characterization for Engineering Design and Construction Purposes D653 Terminology Relating to Soil, Rock, and Contained Fluids D2488 Practice for Description and Identification of Soils (Visual-Manual Procedure) D5731 Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications D5873 Test Method for Determination of Rock Hardness by Rebound Hammer Method D6026 Practice for Using Significant Digits in Geotechnical Data Keywords cavern design; civil underground excavations; cleavage planes; discontinuities; excavation site; face; fault zones; geotechnical mapping; mapping; mines; rock; rock mass response mapping; subsurface openings; surface analysis; underground environments; underground excavations (civil/mining); ICS Code ICS Number Code 07.040 (Astronomy. Geodesy. Geography) DOI: 10.1520/D4879-08 ASTM International is a member of CrossRef. ASTM D4879The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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