5.1 This test method measures the permanent deformation behavior and rutting resistance of an asphalt mixture specimen.5.2 This method can also measure moisture susceptibility of an asphalt mixture specimen if required by the agency.NOTE 1: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.1.1 This test method describes a procedure for testing permanent deformation behavior and rutting resistance of compacted asphalt mixtures using a modified version of a loaded wheel tracker device2 utilizing controlled confining pressure. The test specimen is tested either dry or moisture conditioned. A laboratory roller compactor or its equivalent is used to prepare test slabs of 305 mm by 305 mm [12 in. by 12 in.] and thickness 50 mm, 75 mm, or 100 mm [2 in., 3 in., or 4 in.] depending on the nominal maximum aggregate size. The thickness of the specimen must be at least two and half times the nominal maximum aggregate size. Alternatively, saw-cut slab specimens with dimensions 305 mm by 305 mm [12 in. by 12 in.] and thickness 50 mm to 100 mm [2 in. to 4 in.] may be secured from the field.1.2 Units—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 in nonconformance with the standard.1.3 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.1.4 Since a precision estimate for this standard has not been fully developed, the test method is to be used for research and informational purposes only. Therefore, this standard should not be used for acceptance or rejection of a material for purchasing purposes.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

定价： 689元 / 折扣价： 586 元 加购物车

This specification covers gray iron castings that are statically cast in permanent molds. Castings under this specification are classified into a number of grades (A-SA, A-SB, A-SC, A-SS, A-CA, A-CB, A-CC, N-SA, N-SB, N-SC,N-SS, N-CA, N-CB and N-CC) based on the properties of separately cast test bars. The grades are designated A for annealed or N for normalized; followed by an S or a C to designate a solid or a cored casting; followed by an A, B, C, or S to designate the test bar to be poured with the castings. The cast test bar shall be selected on the basis of the controlling section size of the casting and shall have the specified dimensions (diameter and length). Castings may be produced in the as cast state provided the tensile strength and Brinell hardness requirements are met. The chemical composition and heat treatment shall be such as to produce these mechanical requirements as well. A suitable permanent mold design for separately cast test bars is described and the tension test requirements are detailed.1.1 This specification covers gray iron castings that are statically cast in permanent molds.1.2 No precise quantitative relationship can be stated between the properties of the iron in various locations of the same casting or between the properties of a casting and those of a test specimen cast from the same iron (see Appendix X1).1.3 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.1.4 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： 590元 / 折扣价： 502 元 加购物车

4.1 These test methods are intended to provide information from which applicable design and performance data can be derived for the performance of metal railing systems and rails installed and fastened to structural elements of concrete, masonry, wood, and metal as well as related products.4.2 These test methods may be used to determine whether railing systems comply with requirements of the applicable performance specifications.4.3 These test methods are intended for use in the buying and selling of railing systems and components according to performance specifications, for use in product development research, for use in quality assurance and manufacturing process control, for use in developing performance standards, and for use in field and laboratory compliance determination. Typical floor-mounted railings are shown in Fig. 1.FIG. 1 Front Views of Sections of Three Typical Railing Systems1.1 These test methods cover procedures to be followed in testing the performance of permanent metal railing systems (guard, stair, and ramp-rail systems), including components such as rails (hand, wall, grab, and transfer rails) and swing gates or other forms of required guardrail opening protection, installed in and for agricultural, assembly, commercial, educational, industrial, institutional, recreational, and residential buildings and other structures, such as towers or elevated platforms.1.2 These test methods are applicable to such railing systems and rails having major structural components made of metal, with their secondary components, including swing gates or other forms of guardrail opening protection, made of metal or other materials such as wood, plastic, and glass.1.3 These test methods can be used to determine whether permanent metal railing systems and rails,2 including components, comply with requirements of the applicable performance specifications, such as building codes, or performance standards such as those described in Specification E985, ANSI/ASSE A1264.1, and OSHA 1910.23.1.4 Specifically, these test methods cover procedures for determining the static strength of metal railing systems, rails and components as structural elements when installed and fastened to concrete, masonry, wood, and metal, as well as related products.1.5 No consideration is given in these test methods to any possible deterioration of metal railing systems, rails, and connections, resulting from adverse environmental conditions. The performance of special tests covering this aspect may be desirable.1.6 These test methods are limited to the application of the loads described herein.1.7 Should computations make it possible to provide the needed information, testing can be employed for verification.1.8 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.1.9 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. For specific hazard statements, see 11.2.1.10 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.

定价： 590元 / 折扣价： 502 元 加购物车

定价： 260元 / 折扣价： 221 元 加购物车

定价： 345元 / 折扣价： 294 元

5.1 Test Method D3106 for testing permanent deformation of elastomeric yarns is considered satisfactory for acceptance testing of commercial shipments when there is prior agreement as to the exact value of elongation to be used for testing, since current estimates of between-laboratory precision are acceptable.5.1.1 If there are differences or practical significance between reported test results for two laboratories (or more) comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, test samples that are as homogeneous as possible, drawn from the material from which the disparate test results were obtained, and randomly assigned in equal numbers to each laboratory for testing. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.5.2 Yarns are subjected to long periods of tension resulting in an appreciable amount of stretch during normal use. A portion of the induced stretch may be permanent. The amount of permanent deformation is influenced by the amount of tension, the time the yarn is under tension and the time available for recovery between successive uses.5.3 For optimum processing of elastomeric yarns, the permanent deformation value should be low or zero.1.1 This test method covers the determination of the permanent deformation of bare, continuous elastomeric monofilaments and filament yarns made from rubber, spandex, anidex, or other elastomers subjected to prolonged periods of tension. This test method is applicable to elastomeric yarns having a linear density in the range from 4 to 320 tex (36 to 2900 den.).1.2 This test method is not applicable to covered, wrapped, core-spun yarns, or yarns spun from elastomeric staple.1.3 This test method was developed using yarns in the “as-received” condition, but may be used for treated yarns provided the treatment is specified.1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.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

定价： 345元 / 折扣价： 294 元

This specification covers magnesium alloy permanent mold casting. The castings may be subjected to the heat treatment necessary to produce material that will conform to the requirements specified. Heat treatment shall be performed on the whole of a casting, never on a part only, and shall be applied in a manner that will produce the utmost uniformity. The castings shall be of uniform quality and condition, free of cracks or other injurious defects, and shall be well cleaned by sand blasting or any other approved process before inspection. The material shall conform to the chemical composition limits prescribed. Any suitable method of chemical analysis may be used. Unless otherwise specified, heat treatment for the applicable tempers designated shall be in accordance with practice B 661 or with Military Specification MIL-M-6857. The tension test specimens representing the castings shall conform to the requirements specified. At least one tension test specimen shall be cast from each melt of 2000 lb (907 kg) or fraction thereof to represent the castings poured from the same melt. The tension tests shall be made in accordance with test methods B 557.1.1 This specification covers magnesium alloy permanent mold casting alloys designated as shown in Table 1.1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are provided for information only.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.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： 590元 / 折扣价： 502 元 加购物车

定价： 260元 / 折扣价： 221 元 加购物车

4.1 The mechanical properties determined from test bars for sand, permanent mold, and centrifugal castings poured in accordance with this practice represent the properties of the metal going into castings poured from the same heat. These mechanical properties may not be the same as the properties of the corresponding castings because of the solidification effects of varying size, section, and design.4.2 Test bars for continuous castings are taken from the castings and therefore represent the properties of the castings.1.1 This practice establishes procedures for preparing test coupons and specimens (machined and unmachined) for tension tests of copper alloys for sand, permanent mold, centrifugal and continuous castings.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 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

This specification covers the requirements for UNS C95300, C95400, C95410, C95500, C95800, C87500, C87800, C87850, and C89540 copper alloy permanent mold castings for general applications. UNS C95800 copper alloy used in sea water applications should be heat treated for better corrosion resistance. In general, alloys included in this specification are weldable. Mechanical properties like the tensile strength, yield strength and elongation are determined from separately cast test bar castings and should conform to the specified requirements.1.1 This specification covers requirements for copper alloy2 permanent mold castings for general applications. Nominal compositions of the alloys under this specification are shown in Table 1.1.2 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 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

This specification covers permanent metal railing systems (such as guard, stair, and ramp-rail systems) and rails (such as hand, wall, grab, and transfer rails) for use in agricultural, assembly, commercial, educational, industrial, institutional, recreational, and residential buildings. Also covered in this specification are basic design requirements and considerations, and minimum criteria for load and deflections; however, it does not cover design criteria for specific field conditions. Railing systems and rails shall be manufactured with major structural components made of metal and secondary components made of metal, wood, plastics, or glass, and shall withstand forces that may potentially be exerted by building users. Tests for static loading and deflection shall be performed and shall conform to the requirements specified.1.1 This specification covers permanent metal railing systems (guard, stair, and ramp-rail systems) and rails (hand, wall, grab, and transfer rails) installed in and for agricultural, assembly, commercial, educational, industrial, institutional, recreational, and residential buildings.1.2 This specification is intended to be applied to permanent metal railing systems for buildings and to such railing systems and rails having major structural components made of metal, with their secondary components made of metal or other materials such as wood, plastics, and glass.1.3 This specification considers that today's and tomorrow's overall outlook is based on the health and safety of all potential users of buildings. The criteria incorporated in this specification provide for normal and anticipated building uses, but not for abuses for which the building and its components are not designed.1.4 This specification establishes basic minimum requirements and criteria that lead to satisfactory products under normal use conditions and does not give consideration to design criteria for specific field conditions, the establishment of which is the prerogative and responsibility of the designer, specification writer, and code agencies.1.5 Sources of supportive information are listed in the Reference section ().1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.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 and health practices and determine the applicability of regulatory limitations prior to use.

定价： 0元 / 折扣价： 0 元