When paving an unsupported edge, how much can it deviate from the string line?

When paving an unsupported edge, the allowable deviation from the string line is typically up to +/- 1.5 inches. This tolerance ensures that the paving work maintains a level of accuracy while still allowing for some flexibility during the application process. Such a standard ensures quality in the surface finish and structural integrity of the pavement.

Paving operations must adhere to specified tolerances to meet engineering standards and ensure the proper performance of the asphalt surface. Limits such as +/- 1.5 inches help to control the overall design specifications, allowing for effective drainage, compacting processes, and the longevity of the pavement.

Understanding this guideline is crucial for professionals in the field to maintain proper quality control during asphalt paving projects, especially when dealing with conditions that may lead to deviations, such as variations in the base materials or environmental factors.