P13 工程地质、水文地质勘察与岩土工程 标准查询与下载

ASTM D4612-08 计算岩石的热扩散系数的标准实施规范

The thermal diffusivity is a parameter that arises in the solution of transient heat conduction problems. It generally characterizes the rate at which a heat pulse will diffuse through a solid material. The number of parameters required for solution of a transient heat conduction problem depends on both the geometry and imposed boundary conditions. In a few special cases, only the thermal diffusivity of the material is required. In most cases, separate values of k, ρ, and cp are required in addition to α. This practice provides a consistent set of parameters for numerical or analytical heat conduction calculations related to heat transport through rocks. In order to use this practice for determination of the thermal diffusivity, all of the required parameters ( k, ρ, cp) must be determined under as near identical specimen conditions as possible. The diffusivity determined by this practice can only be used to analyze heat transport in rock under thermal conditions identical to those existing for the k, ρ, and cp measurements. Note 38212;Notwithstanding the statements on precision and bias contained in this test method; the precision of this test method is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing. Users of this test method are cautioned that compliance with Practice D 3740 does not in itself assure reliable testing. Reliable testing depends on many factors; Practice D 3740 provides a means of evaluating some of these factors.1.1 This practice involves calculation of the thermal diffusivity from measured values of the mass density, thermal conductivity, and specific heat at constant pressure. It is applicable for any materials where these data can be determined. The temperature range covered by this practice is 20 to 300°C. Note 18212;The diffusivity, as determined by this practice, is intended to be a volume average value, with the averaging volume being ≥ 2 × 10 −5 m3 (20 cm3). This requirement necessitates the use of specimens with volumes greater than the minimum averaging volume and precludes use of flash methods of measuring thermal diffusivity, such as the laser pulse technique. Note 28212;This practice is closely linked to the overall test procedure used in obtaining the primary data on density, specific heat, and conductivity. It cannot be used as a “stand alone” practice because the thermal diffusivity values calculated by this practice are dependent on the nature of the primary data base. The practice furnishes general guidelines but cannot be considered to be all-inclusive. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

Standard Practice for Calculating Thermal Diffusivity of Rocks

ASTM D4395-08 用挠性板负荷法测定岩石质量现场变形模数的标准试验方法

Results of this type of test method are used to predict displacements in rock mass caused by loads from a structure or from underground construction. It is one of several tests that should be performed. The resulting in situ modulus is commonly less than the elastic modulus determined in the laboratory. The modulus is determined using an elastic solution for a uniformly distributed load (uniform stress) over a circular area acting on a semi-infinite elastic medium. This test method is normally performed at ambient temperature, but equipment can be modified or substituted for operations at other temperatures. Note 18212;The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing/sampling/inspection, etc. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.1.1 This test method covers the preparation, equipment, test procedure, and data reduction for determining in situ modulus of deformation of a rock mass using the flexible plate loading method. 1.2 This test method is designed to be conducted in an adit or small underground chamber; however, with suitable modifications it could be conducted at the surface. 1.3 This test method is usually conducted parallel or perpendicular to the anticipated axis of thrust, as dictated by the design load. 1.4 Time-dependent tests not covered by this standard can be performed but are to be reported in another standard. 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026. 1.5.1 The method used to specifiy 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. 1.6 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. 1.7 The references appended to this standard contain further information on this test method. 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precaution statements, see Section 8.

Standard Test Method for Determining In Situ Modulus of Deformation of Rock Mass Using Flexible Plate Loading Method

ASTM D5079-08 保存和运输岩芯样品的标准规范

The geologic characteristics and the intended use of the rock core samples determine the extent and type of preservation required. If engineering properties are to be determined for the core, it must be handled and preserved in such a way that the measured properties are not significantly influenced by mechanical damage, changes in chemistry, and environmental conditions of moisture and temperature, from the time that the core is recovered from the core drill until testing is performed. Drill core is also the sample record for the subsurface geology at the borehole location, and as such must be preserved for some period of time, in some cases indefinitely, for future geologic study. These practices present a selection of curatorial requirements which apply to the majority of projects. The requirements are given for a variety of rock types and project types ranging from small to large and from noncritical to critical. Noncritical projects are those in which failure of an element or the structure would result in negligible risk of injury and property loss, while there is great risk to property and life after failure of critical structures and projects. Guidance is given for the selection of those specific requirements which should be followed for a given project.1.1 These practices cover the preservation, transportation, storage, cataloging, retrieval, and post-test disposition of rock core samples obtained for testing purposes and geologic study. 1.2 These practices apply to both hard and soft rock, but exclude ice and permafrost. 1.3 These practices do not apply to those situations in which changes in volatile gas components, contamination of the pore fluids, or mechanical stress relaxation affect the intended use for the core. 1.4 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. 1.5 This practice offers a set of instruction for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgement. 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. 1.6 This standard does not purport to address the safety problems 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.

Standard Practices for Preserving and Transporting Rock Core Samples

ASTM D4564-08 用套筒法现场测试土壤密度和单位重量的标准试验方法

This test method is used to determine the density of cohesionless soil used in the construction of earth embankments and road fills, or of cohesionless soils used for structure backfill, bedding and backfill for pipe, or filters. This test method is used as the basis for acceptance of soils compacted to a specified density or to a specified relative density. This test method may be useful in determining the density of cohesionless soils in a confined or limited space since this test method requires less working area than other methods. A predetermined calibration equation is necessary to use this procedure (see Annex A1). It is assumed there is a linear relationship between the density in place and the mass of dry soil per inch of test hole measured by the sleeve method. This may not be true for certain soils or the linear relationship may exist only for a particular range of densities. The quality of the results produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself assure reliable results. Reliable results depend on many factors: Practice D 3740 provides a means of evaluating some of those factors.1.1 This test method covers the determination of the density of soil in place by the sleeve method. 1.2 The sleeve method of determining the density of soil in place is used for cohesionless, granular soils for which other methods of determining the density (sand cone, test pit, and the like) may not be practical. Typically, the sleeve method is applicable for soils that are predominantly fine gravel size, with a maximum of 5 % fines, and a maximum particle size of ¾ in. (19.0 mm). Note 18212;There have been other methods developed for testing cohesionless soils. Compared to other methods, this procedure is convenient for field construction control testing because smaller and lighter equipment is used and the test can be performed in a smaller area. 1.3 A calibration equation is necessary in the application of this test method to obtain a reliable value of the in-place density of the soil (see Annex A1). The calibration equation is used to calculate the density of the soil in place from the mass of dry soil per inch of test hole measured by the sleeve method. 1.3.1 The calibration equation is predetermined for a particular soil type that is to be tested. When the soil changes significantly in either gradation or particle angularity, the calibration equation may have to be adjusted or redefined before the sleeve method can be used. 1.3.2 There may be certain soils meeting the general description in 1.2 for which a calibration equation may not be appropriate due to unsatisfactory correlation of the data. The sleeve method would not be applicable for these soils. 1.3.3 There may be certain soils meeting the description in 1.2 for which the calibration equation may be applicable only for a certain range of densities. The sleeve method will give reliable values of the density in place only within that range of densities. 1.4 This test method uses inch-pound units with SI rationalized units; that is, a combined standard. 1.4.1 The values stated in either SI units or inch-pound 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......

Standard Test Method for Density and Unit Weight of Soil in Place by the Sleeve Method

ASTM D4971-08 用径向加载76mm(3in)钻孔顶出装置测量岩石变型模量的标准试验方法

Results of this test method are used to predict displacements in rock mass caused by loads from a structure or from underground construction. It is one of several tests that should be performed. Because the jack can apply directed loads, this test method can be performed to provide an estimate of anisotropy. In theory, the analysis of test data is straight forward; the modulus estimate requires a record of applied hydraulic pressure versus borehole diameter change, and a knowledge of the rock''s Poisson''s ratio. In practice, the above procedure, using the original theoretical formula, frequently has resulted in computing a material modulus that was demonstrably too low. For analyzing the test data it is assumed that the rock mass is linearly elastic, isotropic, and homogeneous. Within these assumptions, this test method can provide useful data for rock masses for which equivalent continuous properties can not be found or estimated. Note 18212;Notwithstanding the statements on precision and bias contained in this test method; the precision of this test method is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing. Users of this test method are cautioned that compliance with Practice D 3740 does not in itself assure reliable testing. Reliable testing depends on many factors; Practice D 3740 provides a means of evaluating some of those factors.1.1 This test method covers the estimation of in situ modulus of a rock mass at various depths and orientations. Information on time-dependent deformation may also be obtained. 1.2 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026. 1.2.1 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. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 1.4 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.

Standard Test Method for Determining In Situ Modulus of Deformation of Rock Using Diametrically Loaded 76-mm (3-in.) Borehole Jack

ASTM D3967-08 完整岩心试样张裂抗拉强度的标准试验方法

By definition the tensile strength is obtained by the direct uniaxial tensile test. But the tensile test is difficult and expensive for routine application. The splitting tensile test appears to offer a desirable alternative, because it is much simpler and inexpensive. Furthermore, engineers involved in rock mechanics design usually deal with complicated stress fields, including various combinations of compressive and tensile stress fields. Under such conditions, the tensile strength should be obtained with the presence of compressive stresses to be representative of the field conditions. The splitting tensile strength test is one of the simplest tests in which such stress fields occur. Since it is widely used in practice, a uniform test method is needed for data to be comparable. A uniform test is also needed to ensure that the disk specimens break diametrally due to tensile pulling along the loading diameter. Note 28212;Notwithstanding the statements on precision and bias contained in this test method; the precision of this test method is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing. Reliable testing depends on many factors; Practice D 3740 provides a means of evaluating some of these factors.1.1 This test method covers testing apparatus, specimen preparation, and testing procedures for determining the splitting tensile strength of rock by diametral line compression of a disk. Note 18212;The tensile strength of rock determined by tests other than the straight pull test is designated as the “indirect” tensile strength and, specifically, the value obtained in Section 9 of this test is termed the “splitting” tensile strength. 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are mathematical conversions and are provided for information only. 1.3 All dimension and force measurements, and stress calculations shall conform to the guidelines for significant digits and rounding established in Practice D 6026. 1.4 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.

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

ASTM D5335-08 用粘结的电阻应变仪测定岩石热膨胀线性系数的标准试验方法

Information concerning the thermal expansion characteristics of rocks is important in the design of any underground excavation where the temperature of the surrounding rock may be altered. Thermal strain causes thermal stress that ultimately affects the stability of underground excavations. Examples of applications where rock thermal strain is important include: nuclear waste repositories, underground power stations, compressed air energy storage facilities, and geothermal energy facilities. The linear coefficient of thermal expansion, α, of rock is known to vary as the temperature changes. Rock thermal strain is normally not a linear function of temperature. This test method provides a procedure for continuously monitoring thermal strain as a function of temperature. Therefore, information on how a changes with temperature is obtained. Other methods of measuring the expansion coefficient of rock by averaging the thermal strain of a large specimen over a temperature range of many degrees may result in failure to determine the variation in α of that rock for one or more of the following reasons: Alpha is not always linear with temperature, Some rocks are anisotropic having directional characteristics which can vary by more than a factor of two. Alpha may have a negative value in one direction and, at the same time, a positive value in the others. Strain gauges, both wire and foil types, have been successfully employed to measure the thermal expansion coefficients of rock. These coefficients are frequently very small, being on the order of millionths of a millimetre per millimetre for each degree Celsius (millionths of an inch per inch for each degree Fahrenheit). The thermal strain of rocks is about one tenth that of plastics and one half or one quarter that of many metals. Therefore, measurement methods for rocks require greater precision than methods that are routinely used on plastics and metals. Note 48212;Notwithstanding the statements on precision and bias contained in this test method; the precision of this test method is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing. Users of this test method are cautioned that compliance with Practice D 3740 does not in itself assure reliable testing. Reliable testing depends on many factors; Practice D 3740 provides a means of evaluating some of those factors.1.1 This test method covers the laboratory determination of the linear (one-dimensional) coefficient of thermal expansion of rock using bonded electric resistance strain gauges. 1.2 This test method is applicable for unconfined pressure conditions over the temperature range from 20 to 260°C (68 to 500°F). Note 18212;Unconfined tests performed at elevated temperatures may alter the mineralogy or grain structure of the test specimen. This alteration may change the physical and thermal properties of the test specimen. Note 28212;The strain gauges are mounted with epoxy. Most commercially available high temperature epoxies require elevated temperature curing. The elevated temperature required for this curing may alter the physical and thermal properties of the test specimen. Epoxy should be selected based upon the maximum expected test temperature. Room temperature curing epoxy should be used whenever possible. 1.3 The test specimens may be either saturated or dr......

Standard Test Method for Linear Coefficient of Thermal Expansion of Rock Using Bonded Electric Resistance Strain Gauges

ASTM D4644-08 油页岩和类似弱岩石抗崩解持久性的标准试验方法

The test method is used to estimate qualitatively the durability of weak rocks in the service environment.(1-7). This test method is used to assign quantitative durability values to weak rocks. A primary example is the Franklin Rating System (1). Note 18212;The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing, sampling, inspection, and so forth. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.1.1 This test method covers the determination of the slake durability index of a shale or other similar rock after two drying and wetting cycles with abrasion. 1.2 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026. 1.2.1 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. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 1.4 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.

Standard Test Method for Slake Durability of Shales and Similar Weak Rocks

ASTM D1587-08(2012)e1 土工技术用土壤薄壁管抽样的标准实施规程

5. Significance and UseTop Bottom 5.1 This practice, or Practice D3550 with thin wall shoe, is used when it is necessary to obtain a relatively intact specimen suitable for laboratory tests of engineering properties or other tests that might be influenced by soil disturbance.Note 2???The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective sampling. Users of this practice. are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.TABLE 2 Suitable Thin-Walled Steel Sample TubesA Outside diameter (Do): 8199;in. 8199;mm 2 50.8 3 76.2 5 127 Wall thickness: 8199;Bwg 18 16 11

Standard Practice for Thin-Walled Tube Sampling of Soils for Geotechnical Purposes

DB11/T 407-2007 北京市基础测绘技术规程

本标准规定了北京市城市控制测量、基本比例尺数字线划图(DLG)、数字高程模型(DEM)、 数字正射影像图(DOM)、数字栅格图(DRG)测绘及基础地理底图制作等技术要求、指标、方法和质量验收内容。本标准适用于北京市城市控制网的建立与维护,基本比例尺数字线划图、数字高程模型、数字正射影像图、数字栅格图的测绘和基础地理底图的制作等基础测绘工作。

Beijing technical regulations for fundamental survey

KS I ISO 10381-5:2007 土质.取样.第5部分:城市和工业场所土壤污染调查方法指南

이 규격은 토양오염이 있는 것으로 알려졌거나 토양오염의 존재가 의심되는 도시 및 산업부지

Soil quality－Sampling－Part 5：Guidance on the procedure for the investigation of urban and industrial sites with regard to soil contamination

DIN EN 1997-2:2007 欧洲法规7:土工设计.第2部分:土地勘测和测试

(1) EN 1997-2 is intended to be used in conjunction with EN 1997-1 and provides rules supplementary to EN 1997-1 related to: - planning and reporting of ground investigations; - general requirements for a number of commonly used laboratory and field tests; - interpretation and evaluation of test results; - derivation of values of geotechnical parameters and coefficients. In addition, examples of the application of field test results to design are given. NOTE Establishment of characteristic values is covered in EN 1997-1. (2) This document gives no specific provisions for environmental ground investigations. (3) Only commonly used geotechnical laboratory and field tests are covered in this standard. These were selected on the basis of their importance in geotechnical practice, availability in commercial geotechnical laboratories and existence of an accepted testing procedure in Europe. The laboratory tests on soils are mainly applicable to saturated soils. NOTE It is expected Ihat updates of thc prcsent standard will gradually include laboratory and field Icsts covering additional aspects of soil and rock behaviour. (4) The provisions of this standard apply primarily to projects of geotcchnical category 2, as defined in 2.1 of EN 1997-1:2004. The ground investigation requirements for category 1 projects are normally limited as the verifications often will be based on local experience. For geotechnical category 3 projects, the amount of investigations required will normally be at least the same as indicated for geotechnical category 2 projects in the following sections. Additional investigations and more advanced tests, related to the circumstances that place a project in geotechnical category 3, may be necessary. (5) The derivation of parameter values is dedicated primarily to the design of pile and spread foundations based on field testing, as detailed in Annexes D, E, F and G of EN 1997- 1:2004.

Eurocode 7: Geotechnical design - Part 2: Ground investigation and testing; German version EN 1997-2:2007

CJJ 7-2007 城市工程地球物理探测规范

本规范适用于城市工程建设的岩土工程勘察、水文地质 勘察和环境地质勘察以及工程质量评价中的地球物理探测。

Code for engineering geophysical prospecting and testing in city

ISO/TS 22475-3:2007 土工调查和测试.抽样方法和地下水测量.第3部分:第三方对企业和个人的一致性评估

This Technical Specification is applicable to the conformity assessment of enterprises and personnel performing specified parts of sampling and groundwater measurements in accordance with ISO 22475-1 and complying with the technical qualification criteria given in ISO/TS 22475-2 by third-party control.

Geotechnical investigation and testing - Sampling methods and groundwater measurements - Part 3: Conformity assessment of enterprises and personnel by third party

TB 10012-2007 铁路工程地质勘察规范

本规范适用于新建与改建铁路勘测设计、施工和运营阶段的工程地质勘察工作。

Code for geology investigagion of railway engineering

KS I ISO 14254:2007 土壤质量.氯化钡萃取液中互换酸性的测定

이 규격은 KS M ISO 11260에 따라 만든 토양 시료의 염화 바륨 추출액 중의 교환

Soil quality－Determination of exchangeable acidity in barium chloride extracts

TB 10084-2007 铁路天然建筑材料工程地质勘察规程

本规程适用于新建与改建铁路路基填料、碎石道砟、混凝土骨料、石料等天然建筑材料的工程地质勘察工作。

Code for geology investigation of natural building material of railway engineering

DL/T 5385-2007 大坝安全监测系统施工监理规范

本标准规定了对大坝监测系统施工监理的基本要求，包括对监理机构和监理人员的要求，工程质量、进度和投资的控制，以及合同管理和工程验收的内容等。 本标准适用于大、中型水电水利工程1级、2级、3级建筑物、地下工程及对大坝安全有重大影响的坝区边坡和其他与大坝安全有关建筑物的安全监测系统的施工监理。 4、5级建筑物及小型水电水利工程的安全监测系统施工监理可参照执行。

Specification for construction supervision of dam safety monitoring system

NF P94-510-1:2007 土工调查和检验.抽样法和地下水测量.第1部分:执行技术原则

Geotechnical investigation and testing - Sampling methods and groundwater measurements - Part 1 : technical principles for execution.

ASTM D4829-07 土壤膨胀系数的标准试验方法

The expansion index, EI, provides an indication of swelling potential of a compacted soil. The EI test is not used to duplicate any particular field conditions such as soil density, water content, loading, in-place soil structure, or soil water chemistry. However, consistent test conditions are used in preparation of compacted specimens such that direct correlation of data can be made between organizations. Note 1&8212;Qualitative classification of potential expansion in a soil based on EI is provided in Table 1. Note 2&8212;Notwithstanding the statements on precision and bias contained in this test method: The precision of this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. Agencies which meet the criteria of Practice D 3740 are generally considered capable of competent testing. Users of this test method are cautioned that compliance with Practice D 3740 does not ensure reliable testing. Reliable testing depends on several factors; Practice D 3740 provides a means of evaluating some of those factors. TABLE 1 Classification of Potential Expansion of Soils Using EI Average Expansion IndexStandard Deviation (1 s limit)Difference Two-Standard-Deviation Limit (d2s limit) 561130 761439 7718501.1 This test method allows for determination of expansion potential of compacted soils when inundated with distilled water.1.2 This test method provides a simple yet sensitive method for determination of expansion potential of compacted soils for practical engineering applications using an index parameter.1.3 The values stated in SI units are to be regarded as the standard. The values stated in inch-pound units are approximate.1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026.1.4.1 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.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.

Standard Test Method for Expansion Index of Soils