When identifying a flat area using a manual straightedge, what is the next step?

When identifying a flat area using a manual straightedge, the correct next step is to place the rolling straightedge next to it. This process is significant because the rolling straightedge provides a more accurate evaluation of the flatness over a larger area compared to the manual straightedge.

The purpose of using the rolling straightedge after the manual straightedge is to ensure that any imperfections or irregularities in the surface are assessed comprehensively. The rolling straightedge can highlight deviations in the paving that may not have been apparent with the manual straightedge alone, allowing for adjustments before paving begins. This methodical approach helps maintain quality standards in asphalt paving.

In contrast, removing the manual straightedge too quickly may overlook any necessary adjustments. Starting to pave immediately without confirming the flatness can lead to problematic surfaces that require costly repairs or reinstatement later. Finally, calibrating the manual straightedge is not needed at this stage because it is only used to make the initial assessment; the rolling straightedge is intended for a definitive measure of flatness during the paving process.