Survey team on a civil infrastructure site preparing as-constructed documentation
← Back to Resources

As-Built and Authority Documentation

As-Constructed Documentation for Civil and Infrastructure Projects

As-constructed documentation turns field survey data into the records authorities and asset owners rely on for acceptance, handover and future maintenance. When drawings, attributes, survey evidence and submission notes do not align, approvals slow down and rework becomes likely.

Use this guide to plan the survey capture, drawing preparation and documentation checks needed for roads, drainage, water, sewer, open space and utility corridor assets across WA civil and infrastructure projects.

Who this is for

Engineers, design managers, authority submission teams and client-side project managers responsible for delivering final documentation for roads, drainage, water infrastructure, sewer assets, open space assets or utility corridors to Water Corporation, Main Roads, local government or private asset owners.

What problem it solves

As-constructed submissions commonly fail when pickup data is incomplete, asset attributes are missing, design changes are not recorded, or drawings do not match the installed works. These gaps can delay clearance, trigger clarification requests and require crews to remobilise for avoidable pickups.

When it matters

Plan for as-constructed documentation before handover, not after construction is complete. It matters whenever projects require A-Spec, D-Spec, R-Spec, O-Spec, DS-80 or asset-owner deliverables, and whenever drainage structures, road corridors, water, sewer or utility assets change during construction.

What Noble Surveys delivers

Noble Surveys can provide survey control checks, targeted as-built pickups, road and drainage asset capture, water and sewer asset surveys, compliance markups against issued-for-construction models, DS-80 drawing preparation, attribute tables, digital files, submission notes and authority-ready handover packs.

As-constructed documentation checklist

Use these checks before handover so field data, drawings and submission requirements stay aligned.

Document each step in your quality plan.

Align specifications early

  • Capture the latest A-Spec/D-Spec/R-Spec/O-Spec requirements and circulate them to field crews.
  • List authority contacts and submission portals so data formats are known ahead of time.
  • Confirm naming conventions, chainage references and datum expectations to prevent rework.

Control the data chain

  • Log every design change that occurs post-set-out and tag them in the as-built register.
  • Use shared survey control and document any field adjustments with dates and crew notes.
  • Store point cloud, GNSS, total station and UAV data in a structured, backed-up repository.

Compile authority-ready packs

  • Generate DS-80 or equivalent drawings with attribute tables and clear symbology.
  • Include survey reports, photos and compliance statements that map evidence to each specification paragraph.
  • Run an internal review checklist before uploading to Water Corporation, Main Roads or local government portals.

FAQ

What is the difference between as-built and as-constructed documentation?

As-built surveys record what was physically constructed in the field. As-constructed documentation packages that survey evidence into the drawings, attributes, reports and submission formats required by authorities, asset owners or project specifications.

Do authorities still require DS-80 submissions?

Yes. Water Corporation expects DS-80 drawings for applicable projects, and many local governments mirror this format. Having templates ready accelerates approvals.

How detailed should attribute data be?

Provide the full chainage, offsets, materials and installation dates where specs call for it. More detail up front prevents clarification requests later.

Can you integrate our contractor's BIM or GIS data?

We regularly merge contractor BIM exports, GIS layers and survey pickups so the final deliverable reflects the actual installed works rather than design intent alone.

What if we are missing some field data?

Noble Surveys can remobilise quickly for targeted pickups, ensuring gaps are filled without re-surveying entire corridors.

Need as-constructed documentation ready for handover?

Send through your specification requirements, IFC drawings, staging schedule and submission deadlines. Noble Surveys can align field capture, drawing preparation and documentation checks so your handover package is ready for review.