An as-built survey records selected locations or elevations of constructed features after installation.
Definition
An as-built survey measures and records selected locations or elevations of features after they have been installed. The contract defines which features, accuracy, methods, coordinate basis, format, and timing are included. Deliverables may support record drawings, asset records, closeout, or acceptance review. Firms may scope field measurements and drafting separately, and the level of detail depends on the intended use and project requirements. An as-built survey reports what was measured within the stated scope and limitations. It does not certify that construction matches the design, complies with code, or meets every contract requirement. It also does not replace inspections or acceptance decisions assigned to the owner, engineer, or authority. Owners define the needed information before work starts so field access and records can be coordinated. See NCEES for information about professional licensure.
How owners use it
- An owner specifies the features and accuracy needed for project closeout or asset records.
- A project manager schedules field measurements after installation and coordinates access to the completed work.
- A firm scopes measurements, drafting, coordinate basis, and file format separately so the deliverable matches the intended use.
