At what frequency should cross slope measurements be taken?

Cross slope measurements are crucial for ensuring proper drainage and ride quality on asphalt pavements. The recommended frequency of every 100 feet for taking these measurements is based on industry standards that help ensure consistency and reliability in assessing the pavement's geometric features. This frequency allows for an adequate number of measurements across a section to accurately capture any variations in slope that may affect drainage performance and vehicle safety.

Taking measurements too infrequently, such as every 150 or 200 feet, could lead to missed problematic areas, resulting in water pooling or inadequate drainage. Conversely, measuring every 50 feet might be overly meticulous for typical projects and could lead to unnecessary time and resource consumption without providing significantly more value. Therefore, measuring at 100-foot intervals strikes a balance, ensuring sufficient data collection while remaining practical and efficient for construction monitoring and quality assurance practices.