Standard Practice for
Roads and Parking Lots Pavement Condition Index Surveys1
This standard is issued under the ﬁxed designation D6433; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon(´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.1 This practice covers the determination of roads and parking lots pavement condition through visual surveys using the Pavement Condition Index (PCI) method of quantifying pavement condition. 1.2 The PCI for roads and parking lots was developed by the U.S. Army Corps of Engineers (1, 2).2 It is further veriﬁed andadopted by DOD and APWA. 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 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 thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Speciﬁc precautionary statements are given in Section 6. 2. Terminology 2.1 Deﬁnitions of Terms Speciﬁc to This Standard: 2.1.1 additional sample—a sample unit inspected in addition to the random sample units to include nonrepresentative sample units in thedetermination of the pavement condition. This includes very poor or excellent samples that are not typical of the section and sample units, which contain an unusual distress such as a utility cut. If a sample unit containing an unusual distress is chosen at random it should be counted as an additional sample unit and another random sample unit should be chosen. If every sample unit is surveyed, then thereare no additional sample units.
1 This practice is under the jurisdiction of ASTM Committee E17 on Vehicle Pavement Systems and is the direct responsibility of Subcommittee E17.42 on Pavement Testing and Evaluation. Current edition approved Nov. 1, 2009. Published December 2009. Originally approved in 1999. Last previous edition approved in 2007 as D6433 – 07. DOI: 10.1520/D6433-09. 2 Theboldface numbers in parentheses refer to the list of references at the end of this standard.
2.1.2 asphalt concrete (AC) surface—aggregate mixture with an asphalt cement binder. This term also refers to surfaces constructed of coal tars and natural tars for purposes of this practice. 2.1.3 pavement branch—a branch is an identiﬁable part of the pavement network that is a single entity and has adistinct function. For example, each roadway or parking area is a separate branch. 2.1.4 pavement condition index (PCI)—a numerical rating of the pavement condition that ranges from 0 to 100 with 0 being the worst possible condition and 100 being the best possible condition. 2.1.5 pavement condition rating—a verbal description of pavement condition as a function of the PCI value that varies from “failed”to “excellent” as shown in Fig. 1. 2.1.6 pavement distress—external indicators of pavement deterioration caused by loading, environmental factors, construction deﬁciencies, or a combination thereof. Typical distresses are cracks, rutting, and weathering of the pavement surface. Distress types and severity levels detailed in Appendix X1 for AC, and Appendix X2 for PCC pavements must be used toobtain an accurate PCI value. 2.1.7 pavement sample unit—a subdivision of a pavement section that has a standard size range: 20 contiguous slabs (68 slabs if the total number of slabs in the section is not evenly divided by 20 or to accommodate speciﬁc ﬁeld condition) for PCC pavement, and 2500 contiguous square feet, 6 1000 ft2 (225 6 90 m2), if the pavement is not evenly divided by 2500 or to...