Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO R 43M/R 43:2007
• Năm ban hành / Publication date: 2007
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng việt / Title in Vietnamese: Standard Practice for Quantifying Roughness of Pavements
• Tên tiếng anh / Title in English: Standard Practice for Quantifying Roughness of Pavements

Thay thế bằng / Replaced by

AASHTO R 43:2013

Lịch sử soát xét / History of version

• AASHTO R 43M/R 43:2007 
• AASHTO R 43:2013(W - Hết hiệu lực)

• Số trang / Page: 4

Phạm vi áp dụng / Scope of standard

This 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 wheelpaths of the
pavement. The average of these two IRI statistics is reported as
the roughness of the pavement section.

The 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 practice is in conflict with its references
made, such as ASTM standards, this practice takes precedence for
its purpose.

The values in either SI units or inch-pound units are to be
regarded separately as standard. Within the text, the inch-pound
units are shown in parentheses. The values stated in each system
are not exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems
may result in nonconformance with the specification.

This practice does not purport to address all of the safety
issues, if any, associated with its use. It is the responsibility
of the user of this practice to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations related to and prior to its use.