What is the minimum number of samples that should be taken to form a representative sample from the roadway?

To form a representative sample from the roadway, it is crucial to ensure that the samples captured reflect the variations in materials and conditions present. The minimum of three samples is necessary because it allows for a more accurate representation of the overall characteristics of the roadway. With just two samples, there is a higher risk of anomalies or irregularities influencing the results, potentially leading to an inaccurate assessment of the material properties. Three samples provide a better statistical basis for analysis, helping to account for variability and mitigate the effects of outliers. By incorporating multiple samples, one can achieve a more comprehensive understanding of the roadway conditions, making it essential for achieving reliable results in earthwork projects.