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Description of ASTM-E950/E950M 2022ASTM E950/E950M-22Redline Standard: Standard Test Method for Measuring the Longitudinal Profile of Traveled SurfacesASTM E950/E950MScope 1.1 This standard is device independent. Measurements may be made by any device capable of producing a suitable longitudinal elevation profile for the vehicular traveled surface. However, cellular phone-based road rating devices are not applicable. The vehicle-based profiling device, commonly described as the “inertial profiler,” is used as an example of one such device. 1.2 Elevation measurements may be used to validate or certify a profiling device or to determine its suitability for a particular application by comparing measurements produced by a profiling device, called a candidate Production Class profiler, with measurements produced by a reference profiling device, called a Reference Class profiler. To conduct profile measurements for a particular application, the calculated profile shall meet the accuracy and repeatability requirements specified herein for that particular application or class. The selection of proper filtering allows the user to obtain suitable wavelength information for the intended application. For example, for application for road roughness evaluation, the precision and bias are determined using the cross-correlation method after filtering using the International Roughness Index (IRI) filter (1).2 1.3 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. 1.4 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. Specific precautionary information is given in Section 7. 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. Keywords accuracy; cross-correlation; longitudinal profile; precision and bias; profilers; profiling device; profilometer; repeatability; ICS Code ICS Number Code 93.080.20 (Road construction materials) DOI: 10.1520/E0950_E0950M-22 This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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