ASTM E2133-25

1.1 This test method describes the measurement of transverse and longitudinal profiles of traveled surfaces using a Rolling Inclinometer Device operated by a person or propelled/steered by automation.

1.2 It shall be designed to acquire raw slope data and compute elevations to produce profiles that may be used to:

• (1) quantify the roughness of new pavements and bridge decks,
• (2) investigate the effect of various construction methods on surface roughness, and
• (3) serve as a reference device for qualifying high-speed inertial profilers.

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

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.

5.1 This test method establishes procedures for collecting elevation and distance data of longitudinal and transverse profiles on a traveled surface.

5.2 Results of this test are used primarily to:

• 5.2.1 Evaluate the roughness of traveled surfaces using any of several roughness indices shown in Table 1. Equations required for calculations of various indices are contained in references shown in Table 1.

Note 1: When this test is used to evaluate the compliance of a new pavement surface with contract roughness specifications, the timeliness of the test in relation to the date of the surface's installation is of critical importance. Since most portland cement concrete surfaces will change shape within a few days after installation—due to changes in thermal and moisture gradients, which cause curling at joints and cracks at slab edges—for contractor quality control only, it may be desirable to gather profile data within 72 h after pavement installation.

• 5.2.2 Investigate the effect of different construction methods on resulting pavement surface roughness.
• 5.2.3 Investigate the curvature of pavement surfaces due to curling and deflection of structural members within bridges and other structures.
• 5.2.4 Measure rut depth using computer simulation in accordance with Test Method E1703/E1703M.
• 5.2.5 Measure reference profiles for qualifying high-speed inertial profilers with Test Method E950/E950M.