Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO R 48:2010
• Năm ban hành / Publication date: 2010
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Practice for Determining Rut Depth in Pavements
• Thay thế cho / Replace: AASHTO R 48:2009
• Số trang / Page: 2

Phạm vi áp dụng / Scope of standard

This practice describes a method for determining rut depth in
pavement surfaces from transverse profile measurements. Five
transverse profile points are the minimum number of points required
to determine rut depth. While this practice is based on a
five-measurement transverse profile, more than five measurements
greatly improve the accuracy and enhance the likelihood of
identifying the maximum and average rut depth given survey vehicle
wander and various rut configurations.

Procedures are defined for measuring a transverse profile and
deriving a rut depth, but detailed specifications are not included
for equipment, instruments, or software used to make the
measurements. Any equipment and/or procedure that can measure as
specified, with the accuracy stipulated herein, and that can be
adequately calibrated is acceptable for this method.

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