Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO R 43:2013
• Năm ban hành / Publication date: 2013
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Practice for Quantifying Roughness of Pavements

Thay thế cho / Replace

AASHTO R 43M/R 43:2007

• Số trang / Page: 6

Phạm vi áp dụng / Scope of standard

This standard practice describes a method for estimating
roughness for a pavement section. An International Roughness Index
(IRI) statistic is calculated from a single longitudinal profile
measured with a road profiler in both the inside and outside wheel
paths of the pavement. The average of these two IRI statistics
(Mean Roughness Index, MRI) is reported as the roughness of the
pavement section.

This standard practice recognizes the need for a quality
assurance (QA) plan and proposes guidelines for the development of
a QA plan.

Measurements of profile are made in accordance with ASTM E 950.
If any part of this standard practice is in conflict with its
referenced documents, such as ASTM standards or other AASHTO
standards, this standard practice takes precedence for its
purpose.

This standard practice 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 practice to establish
appropriate safety and health practices and determine the
applicability of regulatory limitations related to and prior to its
use.