At what speed should the rolling straightedge be pulled for effective operation?

The effective operation of a rolling straightedge requires a specific speed to ensure accurate measurements and a proper assessment of the pavement's smoothness. The correct speed range of 3 to 5 mph allows for the optimal balance between getting a good measurement and ensuring the operator can adequately control the straightedge while observing any deviations in the surface. This speed is slow enough to provide precise readings and identify any irregularities in the asphalt surface without being so fast that the operator cannot respond quickly to changes.

Operating the straightedge at this speed also minimizes errors that could occur from vibration or instability at higher speeds, ensuring that the tool accurately reflects the surface conditions of the asphalt. Thus, maintaining the rolling straightedge within this specified speed range is essential for effective operation and quality assurance in asphalt paving.