What thickness are the 3/8 shims used in straightedge calibration?

The thickness of the 3/8 shims used in straightedge calibration is 10mm. This standard thickness is critical for ensuring the accuracy and reliability of the straightedge when measuring the surface of the pavement. The straightedge is used to check the evenness and smoothness of the asphalt, which is vital for maintaining the quality and longevity of the paved surface. Using the correct thickness shims allows for precise adjustments and alignments, directly impacting the effectiveness of quality control measures during the asphalt paving process. This precision helps in identifying deviations in the surface that could affect performance, such as water drainage and surface durability.