3.1 Flexural strengths, as determined by Test Method C947, are used for quality control and design of GFRC products and may be used to verify compliance with specifications and to collect data in research and development programs. It is, therefore, important that coupons be prepared according to a standard practice. The coupons are used to make test specimens for Test Method C947 and for Test Method C1229 to determine the amount of glass fiber reinforcement per unit volume of GFRC for quality control purposes.1.1 This practice covers preparation of test coupons to be used in tests of plant manufactured thin-section glass fiber reinforced concrete (GFRC).1.2 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.1.3 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.1.4 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.

定价： 515元 / 折扣价： 438 元 加购物车

定价： 646元 / 折扣价： 550 元 加购物车

4.1 The procedures outlined in these test methods serve to evaluate the performance of the wall segments for deflection, permanent set, and maximum load-carrying capacity under transverse loading. Performance criteria based on data collected using these procedures fall outside the scope of these test methods.4.2 Transverse loads cannot be applied satisfactorily to some wall constructions, such as masonry, with the specimen in a horizontal position. For such constructions, the loads shall be applied to the specimen in a vertical position thus simulating service conditions.4.3 Test results obtained from the two-point loading (8.2.1 and 9.2.1) and the uniform loading (8.2.2 and 9.2.2) are neither compatible nor interchangeable.1.1 These test methods cover transverse load testing to determine the structural properties of wall segments.1.2 These test methods serve to evaluate the performance of wall panels subject to transverse bending loads applied perpendicular to the plane of the wall. The tests are conducted on horizontal or vertical specimens under two-point loading. It also shall be permitted to apply uniform load using an air bag or a vacuum chamber. Depending upon the configuration tested, these loads are intended to evaluate the transverse deflection, permanent set, and maximum flexural capacity or planar shear capacity, or both, of the wall segment. These test methods are not intended for the evaluation of individual structural framing or supporting members (floor joist, decking, etc.), or both. The connections between the vertical elements of the wall segment and the surrounding construction are excluded from the scope of these methods and shall be evaluated by alternative means.1.3 Notes and footnotes in this standard provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of this standard.1.4 The values stated in SI units are to be regarded as standard.1.5 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.1.6 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.

定价： 590元 / 折扣价： 502 元 加购物车

These test methods may be used to measure the equipment performance.These test methods are applicable when the conveying equipment is of sufficient length and is accessible for taking the samples and measuring the speed, or when the discharge is accessible to collect a sample in a given length of time. Not all pieces of equipment in a processing plant may be accessible; therefore, the input or total of inputs to adjacent upstream equipment/output or total of outputs of adjacent downstream equipment may be used to determine the throughput of the conveying equipment in question. Judgement must be used to determine any loss of material or changes in bulk density.1.1 These test methods include descriptions for conducting and reporting throughput and electrical power tests on mechanical conveying equipment for municipal solid waste and recovered products from resource recovery systems. Other aspects of performance testing such as spillage, conveyor tracking, dusting, slippage, transfer points, etc., should be considered in the interpretation of the results. These test methods can be used on equipment handling raw refuse, processed refuse, magnetic scrap metals, nonferrous scrap metals, mixed glass, and residues or tailings. These test methods may also be used for materials in other industries.1.2 These test methods cover mechanical conveying equipment including apron, belt, drag, flight, screw, slat, and vibrating conveyors and bucket elevators.1.3 These test methods are applicable specifically to the resource recovery industry since municipal solid wastes are heterogeneous mixtures and the composition and bulk densities vary considerably depending on many factors. Because of the varying composition of municipal solid waste, a number of samples must be taken to determine accurately the performance of the mechanical conveying equipment.1.4 Test methods for determining the approximate as-conveyed bulk density of the material and for determining the electrical horsepower input of the equipment motors are also included.1.5 It is intended that the tests be made and reported by personnel trained in the proper application and use of the various instruments and methods involved.1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.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 hazard statement, see Section .

定价： 0元 / 折扣价： 0 元

3.1 Tensile loads determined by this test method are useful for quality control of GFRC architectural panels manufactured using the steel panel frame support design. In addition, test results may be used to verify compliance with governing specifications, research and development, and generating data for use in product design.1.1 This test method covers determination of the tensile load capacity of glass-fiber reinforced concrete (GFRC) bonding pads used for attaching steel anchors to GFRC architectural panels.1.2 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.1.3 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.1.4 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.

定价： 515元 / 折扣价： 438 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车

4.1 The use of statistical analysis will enable the investigator to make better, more informed decisions when using the information derived from the analyses.4.1.1 The goals when performing statistical analyses, are to summarize, display, quantify, and provide objective measures for assessing the relationships and anomalies in data. Statistical analyses also involve fitting a model to the data and making inferences from the model. The type of data dictates the type of model to be used. Statistical analysis provides the means to test differences between control and treatment groups (one form of hypothesis testing), as well as the means to describe the relationship between the level of treatment and the measured responses (concentration effect curves), or to quantify the degree of uncertainty in the end-point estimates derived from the data.4.1.2 The goals of this practice are to identify and describe commonly used statistical procedures for toxicity tests. Fig. 1, Section 6, following statistical methods (Section 5), presents a flow chart and some recommended analysis paths, with references. From this guideline, it is recommended that each investigator develop a statistical analysis protocol specific to his test results. The flow chart, along with the rest of this guideline, may provide both useful direction, and service as a quality assurance tool, to help ensure that important steps in the analysis are not overlooked.FIG. 1  Flow Chart for Practice for Statistical AnalysisFIG. 1  Flow Chart for Practice for Statistical Analysis (continued)FIG. 1  Flow Chart for Practice for Statistical Analysis (continued)FIG. 1  Flow Chart for Practice for Statistical Analysis (continued)1.1 This practice covers guidance for the statistical analysis of laboratory data on the toxicity of chemicals or mixtures of chemicals to aquatic or terrestrial plants and animals. This practice applies only to the analysis of the data, after the test has been completed. All design concerns, such as the statement of the null hypothesis and its alternative, the choice of alpha and beta risks, the identification of experimental units, possible pseudo replication, randomization techniques, and the execution of the test are beyond the scope of this practice. This practice is not a textbook, nor does it replace consultation with a statistician. It assumes that the investigator recognizes the structure of his experimental design, has identified the experimental units that were used, and understands how the test was conducted. Given this information, the proper statistical analyses can be determined for the data.1.1.1 Recognizing that statistics is a profession in which research continues in order to improve methods for performing the analysis of scientific data, the use of statistical methods other than those described in this practice is acceptable as long as they are properly documented and scientifically defensible. Additional annexes may be developed in the future to reflect comments and needs identified by users, such as more detailed discussion of probit and logistic regression models, or statistical methods for dose response and risk assessment.1.2 The sections of this guide appear as follows:Title      Section Referenced Documents 2Terminology 3 4Statistical Methods 5Flow Chart 6Flow Chart Comments 7Keywords 8References  1.3 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.

定价： 0元 / 折扣价： 0 元

定价： 646元 / 折扣价： 550 元 加购物车

定价： 515元 / 折扣价： 438 元 加购物车

定价： 0元 / 折扣价： 0 元 加购物车

定价： 345元 / 折扣价： 294 元 加购物车

5.1 The USEPA's policy for whole-effluent monitoring stresses, an integrated approach to toxicity testing (1, 5) tests and other measures of toxicity, should be systematically employed and should be related to certain aquatic-system factors, such as the type of habitats available (benthic and water column), flow regime, and physicochemical quality of the site water and sediment. The determination of toxicity is generally accomplished with a few surrogate species for four major reasons: a regulatory agency can compare test results between sites and over time in order to help prioritize enforcement efforts, tests using these species are relatively inexpensive since the organisms can be cultured year-round under laboratory conditions, the reliability of test methods utilizing surrogate species is better established than for other species, and surrogate species are better integrated into toxicity identification evaluations than other species. For regulatory purposes, under the National Pollution Discharge Elimination System (NPDES), USEPA considers it unnecessary to conduct whole effluent toxicity tests with resident or indigenous species (6). An alternate testing procedure protocol is provided by USEPA for validating toxicity methods using species not already approved (6,7). In systems where surrogate species are not found, erroneous predictions might be obtained of environmental impact or water and sediment quality impairment based on toxicity tests using surrogate species (8).5.2 This guide is intended to assist researchers and managers in selecting appropriate resident species for site-specific toxicity assessments. This guide could be used to select a resident species for use in predicting the potential toxic effects of a substance in certain types of aquatic environments. Another use might be for selecting a number of indigenous species from the aquatic community, that when tested, might indicate potential toxic effects of the test substance or material on the ecological integrity of that community. Selection of a suitable test species is very important because species might respond quite differently to toxic compounds (9). Species suggested as test organisms by regulatory agencies might not occur in the receiving waters of interest and their sensitivity to a toxic substance might not be representative of the sensitivity exhibited by resident species. Since aquatic ecosystem structure and function is often determined by a few key species (10, 11, 12, 13), toxicological tests with these resident species might be very important.5.3 This guide can be used in the selection of representative test species for certain site-specific assessments, such as the Resident-Species Criteria Modification Procedure (1), the Recalculation Procedure (14), and ecological risk assessment studies.5.4 This guide can be used as a general framework for researchers who desire to develop or modify existing toxicity test methods for previously untested species.5.5 Researchers in countries other than the United States and Canada might obtain useful information from this guide regarding potential test species or test methods for sites of local interest.1.1 This guide along with Guide E1192 and guidance from the U.S. Environmental Protection Agency (1,2)2 covers the use of resident species in toxicity testing, particularly if site-specific information is desired. For example, in those systems where particular species are considered to be economically or aesthetically important, it might be more appropriate to utilize resident species for testing (3). For this reason, the USEPA allows development of site-specific chemical standards, using resident species, in order to reflect local conditions (1). This guide is designed to guide the selection of resident species for use as test organisms in aquatic and sediment toxicity tests. It presupposes that the user is familiar with the taxonomy of aquatic and benthic species and has some field experience.1.2 Because toxicological information is often limited for many aquatic species, it is assumed that the majority of testing applications will be acute tests. Therefore, much of the guidance presented in this guide pertaining to the species selection process is applicable when acute toxicity testing is the desired goal. However, the principles discussed in this guide pertain to chronic toxicity test applications as well, although it should be clearly understood that such testing requires substantially greater effort, time, and resources than acute testing.1.3 The procedures for selecting resident species in toxicity testing are necessarily general at this time because information is often lacking for specific taxa or groups of taxa. This guide attempts to give specific information when appropriate.1.4 This guide is not intended to be inclusive. References listed provide a starting point from which to approach the literature. This guide deals solely with aquatic toxicity test situations. Terrestrial, arboreal, or atmospheric species are not considered in this guide.1.5 This guide is arranged as follows:  Section    1  Referenced Documents 2  Terminology 3  Summary of Guide 4   5  Species Selection Process 6  Collection of Information 6.1Obtaining Resident Species for Toxicity Testing 6.2Criteria for Selection 6.3Test Performance Characterization 6.4Interferences 7  Safety Precautions 8  Documentation 9  Keywords 10   AppendixesPotential Test Species  Appendix X1  Algae  X1.1Aquatic Floating Macrophytes  X1.2Protozoa  X1.3Rotifera  X1.4Attached and Benthic Fauna  X1.5Fish  X1.6Amphibia  X1.7Examples of Resident Species  Table X1.1Taxonomic Keys—Partial Listing  Appendix X2  Flow Chart of Factors to Consider For Selecting A Resident Species  Appendix X3  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. All safety precautions and health-related practices are the responsibility of the user. Specific safety practices are suggested in Section 8.1.7 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.

定价： 646元 / 折扣价： 550 元 加购物车

定价： 605元 / 折扣价： 515 元 加购物车

5.1 Polychaetes are an important component of the benthic community, in which they generally comprise 30 to 50 % of the macroinvertebrate population. They are preyed upon by many species of fish, birds, and larger invertebrate species. Larger polychaetes feed on small invertebrates, larval stages of invertebrates, and algae. Polychaetes are especially sensitive to inorganic toxicants and, to a lesser extent, to organic toxicants (1).4 The ecological importance of polychaetes and their wide geographical distribution, ability to be cultured in the laboratory, and sensitivity to contaminants make them appropriate acute and chronic toxicity test organisms. Their relatively short life cycle enables the investigator to measure the effect of contaminants on reproduction.5.2 An acute toxicity or chronic text is conducted to obtain information concerning the immediate effects of an exposure to a test material on a test organism under specified experimental conditions. An acute toxicity test provides data on the short-term effects, which are useful for comparisons to other species but do not provide information on delayed effects. Chronic toxicity tests provide data on long-term effects.5.3 A life-cycle toxicity test is conducted to determine the effects of the test material on survival, growth, and reproduction of the test species. Additional sublethal endpoints (for example, biochemical, physiological, and histopathological) may be used to determine the health of the species under field conditions.5.4 The results of acute, chronic, and life-cycle toxicity tests can be used to predict effects likely to occur on marine organisms under field conditions.5.5 The results of acute, chronic, or life-cycle toxicity tests might be used to compare the sensitivities of different species and the toxicities of different test materials, as well as to study the effects of various environmental factors on the results of such tests.5.6 The results of acute, chronic, or life-cycle toxicity tests might be an important consideration when assessing the hazards of materials to marine organisms (see Guide E1023) or when deriving water quality criteria for aquatic organisms (2).5.7 The results of acute, chronic, or life-cycle toxicity tests might be useful for studying the biological availability of, and structure activity relationships between, test materials.5.8 The results of acute, chronic, and life-cycle toxicity tests will depend partly on the temperature, quality of food, condition of test organisms, test procedures, and other factors.1.1 This guide covers procedures for obtaining data concerning the adverse effects of a test material added to marine and estuarine waters on certain species of polychaetes during short- or long-term continuous exposure. The polychaete species used in these tests are either field collected or from laboratory cultures and exposed to varying concentrations of a toxicant in static or static-renewal conditions. These procedures may be useful for conducting toxicity tests with other species of polychaetes, although modifications might be necessary.1.2 Modifications of these procedures might be justified by special needs or circumstances. Although using appropriate procedures is more important than following prescribed procedures, the results of tests conducted using unusual procedures are not likely to be comparable to those of many other tests. Comparisons of results obtained using modified and unmodified versions of these procedures might provide useful information concerning new concepts and procedures for conducting acute, chronic, or life-cycle tests with other species of polychaetes.1.3 These procedures are applicable to most chemicals, either individually or in formulations, commercial products, and known or unknown mixtures. With appropriate modifications, these procedures can be used to conduct these tests on factors such as temperature, salinity, and dissolved oxygen. These procedures can also be used to assess the toxicity of potentially toxic discharges such as municipal wastes, sediments/soils, oil drilling fluids, produced water from oil well production, and other types of industrial wastes. An LC50 (medial lethal concentration) may be calculated from the data generated in each acute and chronic toxicity test when multiple concentrations are tested. Growth, determined by a change in measured weight, and reproduction, as the change in total number of organisms, are used to measure the effect of a toxicant on life-cycle tests; data are analyzed statistically to indicate that concentration at which a significant difference occurs between the test solutions and control(s).1.4 The results of dose-response acute or chronic toxicity tests with toxicants added experimentally to salt water should usually be reported in terms of an LC50 (mortality), or EC50 (medial effect concentration). The results of life-cycle toxicity tests with toxicants added experimentally to salt water should be reported as that concentration at which a statistically significant difference in the number of offspring or growth (determined by weight) is produced with reference to the control(s).1.5 Where appropriate, this standard has been designed to be consistent with or complementary to other methods for assessing toxicity to invertebrates described in Test Methods E1367 and E1706, and Guides E1391, E1525, E1611, and E1688.1.6 This guide is arranged as follows:  SectionReferenced Documents  2Terminology  3Summary of Guide  4  5Apparatus  6 Facilities  6.1 Construction Materials  6.2 Test Chambers  6.3 Cleaning  6.4 Acceptability  6.5Safety Precautions  7Dilution Water  8 Requirements  8.1 Source  8.2 Treatment  8.3 Characterization  8.4Test Material  9 General  9.1 Stock Solution  9.2 Test Concentrations  9.3Test Organisms 10 Species 10.1 Age 10.2 Source 10.3 Feeding 10.4 Holding 10.5 Quality 10.6Procedure 11 Experimental Design 11.1  Acute Test 11.1.1  Chronic Test 11.1.2  Life-Cycle Test 11.1.3 Test Condition Specifications 11.2  Dissolved Oxygen 11.2.1  Temperature 11.2.2  Loading 11.2.3  Salinity 11.2.4  Light 11.2.5 Beginning the Test 11.3 Feeding 11.4 Duration of Test 11.5 Biological Data 11.6 Other Measurements 11.7Hazards  Analytical Methodology 13Acceptability of Test 14Calculation of Results 15Report 16Keywords 17Appendixes:   Neanthes arenaceodentata Appendix X1 Capitella capitata Appendix X2 Ophryotrocha diadema Appendix X3 Dinophilus gyrociliatus Appendix X41.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in 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. Specific precautionary statements are given in Section 7.1.9 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.

定价： 843元 / 折扣价： 717 元 加购物车

4.1 This practice provides a controlled corrosive environment that has been utilized to produce relative corrosion information.4.2 The primary application of the data from this practice is to evaluate the performance of metallic materials for use in soil environments.4.3 This practice may not duplicate all field conditions and variables such as stray currents, microbiologically influenced corrosion, non-homogeneous conditions, pollutants in the soil, and long cell corrosion. The reproducibility of results in the practice is highly dependent on the type of specimen tested and the evaluation criteria selected as well as the control of the operating variables. In any testing program, sufficient replicates should be included to establish the variability of the results.4.4 Structures and components may be made of several different metals; therefore, the practice may be used to evaluate galvanic corrosion effects in soils (see Guide G71).4.5 Structures and components may be coated with sacrificial or noble metal coatings, which may be scratched or otherwise rendered discontinuous (for example, no coating on the edges of metal strips cut from a wide sheet). This test is useful to evaluate the effect of defective metallic coatings.4.6 Structures and components may be coated or jacketed with organic materials (for example, paints and plastics), and these coatings and jackets may be rendered discontinuous. The test is useful to evaluate the effect of defective or incompletely covering coatings and jackets.NOTE 1: The corrosivity of soils strongly depends on soluble salt content (related parameters are chemistry and soil resistivity, see Test Methods G57 and G187), acidity or alkalinity (measured by soil pH, see Test Method G51), Temperature, and oxygen content (loose, for example, sand, or compact, for example, clay, soils are extreme examples, see Test Method G200 – oxidation-reduction potential). The manufacturer, supplier, or user, or combination thereof, should establish the nature of the expected soil environment(s) and select the test environment(s) accordingly. Multiple types of soil can be used to determine the effect of this variable.1.1 This practice covers procedures for conducting laboratory corrosion tests in soils to evaluate the potential for corrosion attack on engineering materials in soils. The test is conducted under laboratory ambient temperature unless the effect of temperature is being evaluated. This practice does not include provisions for microbiological influenced corrosion (MIC) testing, nor its influence on results.1.2 This practice covers specimen selection and preparation, test environments, evaluation, and reporting of test results.1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 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.

定价： 590元 / 折扣价： 502 元 加购物车