What is a field dimension?

A field dimension refers to a measurement that is taken after construction has been completed. This type of dimension is crucial for verifying that the built structures conform to the specified design and accurately reflect the actual conditions on site. Field dimensions can differ from drawings due to various factors such as site conditions, construction practices, and material tolerances.

Understanding field dimensions is important for ensuring that elements like grading, drainage systems, and other infrastructure are correctly located and installed. By measuring after construction, you can identify any discrepancies between the original plans and the realities of what has been built, thus enabling corrections or adjustments as needed.

The other options describe different contexts for measurements but do not accurately capture what a field dimension is. Measurements taken before construction would refer to design-related dimensions, theoretical dimensions pertain to idealized measures that may not reflect actual conditions, and dimensions defined by local codes relate more to regulatory requirements rather than the physical measurements observed in the field.