What are the specification requirements for road surface evenness?

[DeJaxson]

The specification requirements for road surface evenness are as follows: 1. Selection of test locations for the test section: When conducting quality inspection during asphalt pavement construction, test locations should be selected at joints and evaluated with single-point measurements; except for special requirements, the standard position for continuous measurement should primarily be the wheel track on one side of the driving lane (0.8~1.0m from the lane). For existing rutted pavements, the measurement position should be the middle of the rut, marked with chalk on the road surface. 2. Frequency of evenness inspection: For pavement width <9m, inspect 1 lane; for pavement width 9~15m, inspect 2 lanes; for pavement width >15m, inspect 3 lanes. When using a 3m straightedge for inspection, measure two consecutive points every 20m with the straightedge and a feeler gauge, taking the maximum value. 3. Information recording: When filling out the work order, clearly indicate the project name, client, test stake number, designed road grade, design or standard evenness requirements, structural layer thickness, and other relevant information.