Understanding As-Built Surveying
The completed works need a reliable record.
Design information describes what is intended to be constructed.
As-built survey information records relevant aspects of what has actually been completed on site.
These records can support quality assurance, engineering review, project documentation and final handover requirements.
How As-Built Surveying Works
From completed construction to a reliable record of what was built.
Project drawings describe what is intended to be constructed. Once the works have been completed, relevant positions, levels and project-specific interfaces may need to be surveyed and recorded so the final project information reflects what was actually delivered on site.
Complete the Construction Stage
The relevant foundation, structure or construction activity reaches the stage where the required survey information can be recorded.
Carry Out Final Survey Checks
Where required, completed positions, levels and relevant interfaces are checked using the project survey reference information.
Record the Completed Information
The relevant survey information is recorded so there is a traceable record of the completed works.
Support Quality & Handover
The recorded survey information can support quality documentation, engineering review and project close-out requirements depending on the agreed scope.
Simple Example
What is the difference between design information and as-built information?
An approved drawing shows where a foundation is intended to be constructed.
After construction, survey information can be used to record the relevant completed position and level information.
The resulting as-built information provides a record of what was actually constructed rather than relying only on the original design intent.
The exact information recorded and the format of the final as-built records depend on the project requirements, available survey information and agreed scope.
- Design Information“What is intended to be built”
- Construction
- Final Survey Checks
- As-Built Information“What was actually constructed”
- Quality Records / Project Handover
Why It Matters
Completed works need records that can be relied on later.
Completed Position Records
Records relevant completed positions so that the constructed works can be documented.
Quality Documentation
Survey information can form part of the quality records for the completed works.
Engineering Verification
As-built information can support engineering review of completed works against project requirements.
Project Handover
Recorded survey information can be included in handover and close-out documentation, where required.
From Construction to Close-Out
Survey information should remain traceable after construction is complete.
- Construction Completed
- Final Survey Checks
- Survey Information Recorded
- Quality / Engineering Records
- As-Built Information
- Project Close-Out
What AI Engineering Records
What may be recorded.
Depending on the agreed scope, AI Engineering can carry out final survey checks and record the as-built information required for quality documentation and project close-out.
Depending on project requirements, as-built information may include:
- Completed foundation positions
- Relevant structural positions
- Levels
- Project-specific interfaces
- Post-construction survey checks
- Survey records required for quality or close-out
Not every item is required on every project; the information recorded is agreed for each project.
Project Outputs
As-built information for quality records and handover.
The final as-built information provided depends on the agreed project scope and client/project requirements.