93.020 土方工程、挖掘、地基构造、地下工程 标准查询与下载

T/CEC 5016-2020 变电站场地勘测技术规程

1.0.1 为了在变电站、换流站（以下除单独注明外统称“变电站”)工程场地勘测中贯彻执行国家有关法律、法规和政策，做到安全可靠、技术先进、经济合理、保护环境、提高效益、确保质量，制定本规程。 1.0.2 本规程适用于陆域的电压等级为110 (66) kV~1000kV新建和改扩建变电站(含户内变电站、地下变电站、升压站、开关站、串补站等)，以及±160 kV~±1100kV换流站(含接地极)的场地工程测量、岩土工程勘测、水文地质勘测和水文气象勘测。 1.0.3 站址场地勘测除应符合本规程外，尚应符合国家、行业、地方有关现行标准的规定。

Substation Site Survey Technical Regulations

DB64/T 1702-2020 湿陷性黄土地区低矮居住建筑地基处理技术规程

Technical specification for foundation treatment of low residential buildings in collapsible loess areas

DB62/T 4133-2020 公路隧道地质超前预报机械能无损探测技术规程

Technical specification for non-destructive detection of mechanical energy for geological advance prediction of highway tunnels

ASTM D5080-20 快速测定压实度的标准试验方法

1.1 This test method describes the procedure for rapidly determining the percent compaction and the variation from optimum water content of an in-place soil for use in controlling construction of compacted earth. These values are obtained by developing a three-point compaction curve at the same water content as the in-place soil without knowing the value of the water content. The soil used for the compaction curve is normally the same soil removed from the in-place density test. For the remainder of this designation, this test method will be referred to as the rapid method. 1.2 This test method is normally performed for soils containing more than 15 % fines (minus 75-µm (No. 200) sieve size). 1.3 When gravel-size particles are present in the soil being tested, this test method is limited to a comparison of the minus 4.75-mm (No. 4) sieve-size fraction of the in-place density material to a laboratory compaction test of minus 4.75-mm (No. 4) sieve-size material (Method A of Test Methods D698). Subject to the limitations of Practice D4718/D4718M, this test method is also applicable to comparisons of other sieve-size fractions (for example, Method C of Test Methods D698) or other compactive efforts (for example, Test Methods D1557) if new water content adjustment values are determined (see 6.1 and Appendix X2). 1.4 Units—The values stated in SI units are to be regarded as standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard. 1.4.1 The use of balances or scales recording pounds of mass (lbm), or the recording of density in pounds of mass per cubic foot (lbm/ft3 ) should not be regarded as nonconformance with this test method. 1.4.2 The sieve designations are identified using the “standard” system in accordance with Specification E11, such as 25-mm and 75-µm, followed by the “alternative” system of 1-in. and No. 200, respectively, in parentheses. 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 unless superseded by this standard. 1.5.1 For purposes of comparing, a measured or calculated value(s) with specified limits, the measured or calculated value(s) shall be rounded to the nearest decimal or significant digits in the specified limits. 1.5.2 The procedures used to specify how data are collected, recorded or calculated in this standard are regarded as the industry standard. In addition they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; 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 standard to consider significant digits used in analytical methods for engineering design. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Section 9. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Rapid Determination of Percent Compaction

T/CAS 413-2020 排水管道检测和非开挖修复工程监理规程

1　范围 本规程规定了排水管道检测和非开挖修复工程的监理工作管理、检测项目质量控制、非开挖修复工程质量控制、安全生产和文明施工监理、进度和造价控制、合同履行监理与工作协调和监理工作总结等方面的工作要求。 本规程适用于室外排水管道的检测和非开挖修复工程的监理工作。 2　规范性引用文件 下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期引用文件，其最新版本（包括所有的修改单）适用于本文件。 GB 50268 给水排水管道工程施工及验收规范 GB/T 50319 建设工程监理规范 CJJ 6  城镇排水管道维护安全技术规程 CJJ 68  城镇排水管渠与泵站运行、维护及安全技术规程 CJJ 181 城镇排水管道检测与评估技术规程 CJJ/T 210 城镇排水管道非开挖修复更新工程技术规程 3　术语和定义 GB/T 50319界定的以及下列术语和定义适用于本文件。 3.1　 排水管道检测项目 inspection project of drainpipes 为某种特定的目的，专业人员采用目测、工具辅助和仪器设备检测等方法对排水管道及检查井等附属构筑物的结构或运行状态进行检测的服务类项目，包括结构性检测和功能性检测。 3.2　 非开挖修复工程 trenchless rehabilitation project 采用不开挖或少开挖地表的工法进行排水管道整段或点状修复以及检查井修复的建设工程项目，包含修复前的管道预处理和修复前后的视频检测等辅助项目工作内容。 3.3　 总监理工程师 chief project management engineer 由工程监理单位法定代表人书面任命，负责履行建设工程监理合同，主持监理机构工作，具有管道检测和非开挖修复工程监理经验和相应能力的注册监理工程师。

Supervision Regulations for Drainage Pipeline Inspection and Trenchless Restoration

DB37/T 5163-2020 城市轨道交通工程沿线既有建（构）筑物鉴定评估技术规程

本规程适用于山东省区域内城市轨道交通工程建设期沿线既有建（构）筑物的鉴定评估。

Technical regulations for identification and evaluation of existing buildings (structures) along urban rail transit projects

ASTM C1242-20 石材连接系统尺寸的选择、设计和安装的标准指南

Standard Guide for Selection, Design, and Installation of Dimension Stone Attachment Systems

ASTM D2435/D2435M-11(2020) 使用增量载荷的土壤一维固结性能的标准测试方法

1.1 These test methods cover procedures for determining the magnitude and rate of consolidation of soil when it is restrained laterally and drained axially while subjected to incrementally applied controlled-stress loading. Two alternative procedures are provided as follows: 1.1.1 Test Method A—This test method is performed with constant load increment duration of 24 h, or multiples thereof. Time-deformation readings are required on a minimum of two load increments. This test method provides only the compression curve of the specimen and the results combine both primary consolidation and secondary compression deformations. 1.1.2 Test Method B—Time-deformation readings are required on all load increments. Successive load increments are applied after 100 % primary consolidation is reached, or at constant time increments as described in Test Method A. This test method provides the compression curve with explicit data to account for secondary compression, the coefficient of consolidation for saturated materials, and the rate of secondary compression. NOTE 1—The determination of the rate and magnitude of consolidation of soil when it is subjected to controlled-strain loading is covered by Test Method D4186/D4186M. 1.2 These test methods are most commonly performed on saturated intact samples of fine grained soils naturally sedimented in water, however, the basic test procedure is applicable, as well, to specimens of compacted soils and intact samples of soils formed by other processes such as weathering or chemical alteration. Evaluation techniques specified in these test methods assume the pore space is fully saturated and are generally applicable to soils naturally sedimented in water. Tests performed on other unsaturated materials such as compacted and residual (weathered or chemically altered) soils may require special evaluation techniques. In particular, the rate of consolidation (interpretation of the time curves) is only applicable to fully saturated specimens. 1.3 It shall be the responsibility of the agency requesting this test to specify the magnitude and sequence of each load increment, including the location of a rebound cycle, if required, and, for Test Method A, the load increments for which time-deformation readings are desired. The required maximum stress level depends on the purpose of the test and must be agreed on with the requesting agency. In the absence of specific instructions, Section 11 provides the default load increment and load duration schedule for a standard test. NOTE 2—Time-deformation readings are required to determine the time for completion of primary consolidation and for evaluating the coefficient of consolidation, cv. Since cv varies with stress level and loading type (loading or unloading), the load increments with timed readings must be selected with specific reference to the individual project. Alternatively, the requesting agency may specify Test Method B wherein the timedeformation readings are taken on all load increments. 1.4 These test methods do not address the use of a back pressure to saturate the specimen. Equipment is available to perform consolidation tests using back pressure saturation. The addition of back pressure saturation does not constitute nonconformance to these test methods. 1.5 Units—The values stated in either SI units or inchpound units [given in brackets] are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5.1 In the engineering profession it is customary practice to use, interchangeably, units representing both mass and force, unless dynamic calculations (F = Ma) are involved. This implicitly combines two separate systems of units, that is, the absolute system and the gravimetric system. It is scientifically undesirable to combine two separate systems within a single standard. This test method has been written using SI units; however, inch-pound conversions are given in the gravimetric system, where the pound (lbf) represents a unit of force (weight). The use of balances or scales recording pounds of mass (lbm), or the recording of density in lb/ft3 should not be regarded as nonconformance with this test method. 1 These test methods are under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.05 on Strength and Compressibility of Soils. Current edition approved April 1, 2020. Published April 2020. Originally approved in 1965. Last previous edition approved in 2011 as D2435–11. DOI: 10.1520/D2435_D2435M-11R20. *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 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. 1.6 Observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026, unless superseded by this test method. 1.6.1 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to the accuracy to which the data can be applied in design or other uses, or both. How one applies the results obtained using this standard is beyond its scope. 1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Methods for One-Dimensional Consolidation Properties of Soils Using Incremental Loading

ASTM D4767-11(2020) 粘性土的固结不排水三轴压缩试验的标准试验方法

1.1 This test method covers the determination of strength and stress-strain relationships of a cylindrical specimen of either an intact, reconstituted, or remolded saturated cohesive soil. Specimens are isotropically consolidated and sheared in compression without drainage at a constant rate of axial deformation (strain controlled). 1.2 This test method provides for the calculation of total and effective stresses, and axial compression by measurement of axial load, axial deformation, and pore-water pressure. 1.3 This test method provides data useful in determining strength and deformation properties of cohesive soils such as Mohr strength envelopes and Young’s modulus. Generally, three specimens are tested at different effective consolidation stresses to define a strength envelope. 1.4 The determination of strength envelopes and the development of relationships to aid in interpreting and evaluating test results are beyond the scope of this test method and must be performed by a qualified, experienced professional. 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.5.1 The methods used to specify how data are collected, calculated, or recorded in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies or any consideration of end use. It is beyond the scope of this test method to consider significant digits used in analysis methods for engineering design. 1.6 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this test method. 1.6.1 The gravitational system of inch-pound units is used when dealing with inch-pound units. In this system, the pound (lbf) represents a unit of force (weight), while the unit for mass is slugs. The slug unit is not given, unless dynamic (F = ma) calculations are involved. 1.6.2 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass (lbm) and of force (lbf). This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this standard includes the gravitational system of inch-pound units and does not use/present the slug unit for mass. However, the use of balances or scales recording pounds of mass (lbm) or recording density in lbm/ft3 shall not be regarded as nonconformance with this standard. 1.6.3 The terms density and unit weight are often used interchangeably. Density is mass per unit volume whereas unit weight is force per unit volume. In this standard density is given only in SI units. After the density has been determined, the unit weight is calculated in SI or inch-pound units, or both. 1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Consolidated Undrained Triaxial Compression Test for Cohesive Soils

BS 8004:2015+A1:2020 基金会实务守则

What is BS 8004 - Code of practice for foundations about? BS 8004  on the code of practice for foundations is an important design standard for geotechnical and structural engineers, setting out the fundamental rules that should be followed in the design of both shallow and deep foundations. As such BS 8004 applies to a wide variety of projects, ranging from low-rise buildings to large, multi-storey structures. Who is BS 8004 -  Code of practice for foundations  for? BS 8004  on the code of practice for foundations can be adopted by: Structural engineers Geotechnical engineers Civil engineers Architects Specialist piling designers Specifiers Consultants Contractors Clients Why should you use BS 8004 -  Code of practice for foundations ? BS 8004  on the code of practice for foundations gives recommendations for the design, construction, testing, monitoring, and maintenance of foundations in accordance with BS EN 1997 . The foundation types covered include spread foundations, pile foundations (including helical pile foundations), and underpinning. The benefits of using BS 8004 on the code of practice for foundations  are: - Design, construction, monitoring, and maintenance of foundations will conform to the latest EN and EN ISO standards -  It provides improvements to Eurocode 7’s recommendations for spread foundations - The rules for the design of piles reflect modern prac...

Code of practice for foundations

DB11/T 1726-2020 市政基础设施岩土工程勘察规范

Specifications for geotechnical engineering investigation of municipal infrastructure

BS EN ISO 22476-14:2020 岩土工程勘察和测试 现场测试 钻孔动态探测

What is ISO 22476 ‑ 14 about?    ISO 22476 ‑ 14 is the 14 th part of the multi-series of international standard applicable to the geotechnical investigation and testing on field testing.   ISO 22476 ‑ 14 specifies the equipment requirements, execution, and reporting on borehole dynamic probing. ISO 22476 ‑ 14

Geotechnical investigation and testing. Field testing - Borehole dynamic probing

EN ISO 22476-14:2020 岩土工程勘察和试验.现场试验.第14部分:钻孔动态探测

This document specifies the equipment requirements, execution of and reporting on borehole dynamic probing. NOTE This document fulfills the requirements for borehole dynamic probing as part of the geotechnical investigation and testing according to EN 1997-1 and EN 1997-2. The document specifies technical requirements in respect to equipment and implementation, in order to extensively prevent incorrect appraisals of the subsoil conditions and to limit scatter in the probing results due to equipment and implementation.

Geotechnical investigation and testing - Field testing - Part 14: Borehole dynamic probing (ISO 22476-14:2020)

ISO 22476-14:2020 岩土工程勘察和试验.现场试验.第14部分:钻孔动态探测

This document specifies the equipment requirements, execution of and reporting on borehole dynamic probing. NOTE This document fulfills the requirements for borehole dynamic probing as part of the geotechnical investigation and testing according to EN 1997-1 and EN 1997-2. The document specifies technical requirements in respect to equipment and implementation, in order to extensively prevent incorrect appraisals of the subsoil conditions and to limit scatter in the probing results due to equipment and implementation.

Geotechnical investigation and testing — Field testing — Part 14: Borehole dynamic probing

DB42/T 1543-2020 湖北省城镇地下管线成果归档标准

Archiving standards for achievements of urban underground pipelines in Hubei Province

ASTM D4647/D4647M-13(2020) 通过针孔试验鉴定和分类分散粘土土壤的标准试验方法

1.1 This test method presents a direct, measurement of the dispersibility and consequent colloidal erodibility of clay soils by causing water to flow through a small hole punched in a specimen. The results of the tests are qualitative and provide general guidance regarding dispersibility and erodibility. This test method is complemented by Test Method D4221. 1.2 This test method and the criteria for evaluating test data are based upon results of several hundred tests on samples collected from embankments, channels, and other areas where clay soils have eroded or resisted erosion in nature (1).2 1.3 Three alternative procedures for classifying the dispersibility of clay soils are provided as follows: 1.3.1 Method A and Method C, adapted from Ref (1), classify soils into six categories of dispersiveness as: dispersibility (D1, D2), slight to moderately dispersive (ND4, ND3), and nondispersive (ND2, ND1). 1.3.2 Method B classifies soils into three categories of dispersiveness as: dispersibility (D), slightly dispersive (SD), and nondispersive (ND). 1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.5 Units—The values stated in either SI units or inchpound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Methods for Identification and Classification of Dispersive Clay Soils by the Pinhole Test

ISO 18674-3:2017/Amd 1:2020 岩土工程勘察和试验.现场仪器的岩土工程监测.第3部分:测线位移的测量:测斜仪.修改件1

Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation — Part 3: Measurement of displacements across a line: Inclinometers — Amendment 1

ASTM D4719-20 土壤中预钻孔旁压计试验的标准试验方法

1.1 This test method covers pressuremeter testing of soils at a given depth in the ground within a suitable prebored, open test cavity. The pressuremeter test is an in situ, stress-strain test performed on the wall of a test cavity using a circular cylindrical probe that is expanded radially. To obtain viable test results, disturbance of the test cavity must be minimized with minimal clearance between the diameter of the probe and the test cavity. Alternatively, when preboring does not provide an acceptable test cavity, the probe may be directly inserted into the ground to form the test cavity. 1.2 This test method includes the procedure for test cavity preparation, inserting the probe, and conducting pressuremeter tests in both granular and cohesive soils, but does not include high pressure testing in rock. Knowledge of the type of soil to be tested is necessary for assessment of (1) the method of preparing the test cavity, (2) the interpretation of the test data, and (3) the acceptability of the test results. 1.3 This test method does not cover the self-boring pressuremeter, for which the hole is drilled by a mechanical or jetting tool inside the hollow core of the probe. This test method is limited to the type of pressuremeter that is inserted into predrilled boreholes or, under certain circumstances, is inserted by driving or pushing. 1.4 Two alternative testing procedures are provided as follows: 1.4.1 Procedure A—Equal Pressure Increments 1.4.2 Procedure B—Equal Volume Increments NOTE 1—Pressuremeter tests performed in rock or using the self-boring pressuremeter follow similar test procedures to those described herein, but do not fall within the scope of this test method. NOTE 2—Strain-controlled tests also can be performed, whereby the probe volume is increased at a constant rate and corresponding pressures are measured. Strain-controlled tests may yield different results than the procedures described in this test method. 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.6 The procedures used to specify how data are collected/ recorded and calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that should generally be retained. The procedures used 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 standard to consider significant digits used in analysis methods for engineering design. 1.7 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.8 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. Reporting of test results in units other than SI shall not be regarded as non-conformance with this test method. 1.9 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Methods for Prebored Pressuremeter Testing in Soils

ASTM D2936-20 完整岩芯试样直接抗拉强度的标准试验方法

1.1 This test method covers the determination of the direct tensile strength of the rock substance or discontinuities normal to the longitudinal axis of intact, isotropic cylindrical rock specimens at room temperature. 1.2 Non-isotropic or even transversely isotropic specimens are not covered by this standard. 1.3 Cylindrical rock specimens can be drill core from the field or rock blocks transported to the laboratory and drill core specimen obtained there. 1.4 Specimen shapes other than cylindrical specimens, such as dog bone-shaped, are not covered by this standard. 1.5 Test specimens may be tested under constant load or deformation rate. 1.6 The values stated in SI units are to be regarded as standard. The values provided in parenthesis are for information only. 1.7 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 unless superseded by this standard. 1.8 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Direct Tensile Strength of Intact Rock Core Specimens

ASTM D4403-20 岩石用引伸计的标准实施规程

1.1 This practice covers the description, application, selection, installation, data collecting, and data reduction of the various types of contact type extensometers used in the field of rock mechanics. Laser or other non-contact extensometers are not covered here. 1.2 Limitations of each type of extensometer system are covered in Section 5. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Add if appropriate, “Reporting of test results in units other than inch-pound shall not be regarded as nonconformance with this standard. 1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.4.1 The procedures used to specify how data are collected/ recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used 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 standard to consider significant digits used in analysis methods for engineering design. 1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.6 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 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. 1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Practice for Extensometers Used in Rock