Documentation
As-Built Documentation Guide
Requirements for as-constructed record drawings and survey data.
What is As-Built Documentation?
As-built (or as-constructed) documentation records the actual constructed condition of infrastructure. It captures variations from design and is essential for asset management.
As-Built Requirements
- Marked-up drawings showing actual construction
- Survey data in required formats (12d, CAD, GIS)
- Pipe invert levels and grades
- Final pavement levels and cross-sections
- Utility locations and depths
- Asset register information
Digital Requirements
Many authorities now require digital as-built data including:
- CAD files in specific layer formats
- GIS data for asset databases
- 12d model files
- BIM models (for major projects)