Measured existing-condition documentation
As-Built Detailing
SiteOps as-built detailing converts existing structures into reliable, design-ready records for design coordination, retrofit planning, and construction risk reduction. We capture and reconcile what is physically on site - not just what legacy drawings claim exists.
Our teams combine non-destructive subsurface mapping (GPR/Ferroscan), geometric capture (LiDAR/point cloud), and targeted visual verification to define slab zones, reinforcement risk areas, post-tension corridors, service routes, and penetration constraints before cutting or drilling works commence.
Deliverables are structured for practical project use: marked-up investigation plans, coordination overlays, and CAD/BIM-friendly as-built packages that support architects, structural engineers, services consultants, and contractors through design and delivery.
Where data confidence varies by area, we provide confidence zoning and recommended hold points so teams can stage works safely. This reduces rework, avoids accidental strikes, and improves programme certainty on refurbishment and adaptive reuse projects.
Key Features
- •Existing-condition capture and reconciliation against legacy drawings
- •Subsurface risk mapping for reinforcement and post-tension zones
- •Services and penetration conflict identification before works
- •2D plans and 3D coordination-ready as-built outputs
- •Confidence zoning with area-specific verification notes
- •Pre-cut and pre-core hold-point planning
- •Expert-reviewed annotations for site delivery teams
- •Revision control for staged investigations and updates
Standards
Applications
- •Refurbishment and adaptive reuse coordination
- •Tenant fit-out penetration planning
- •Post-tension slab drilling permits
- •Facade and services retrofit design
- •Pre-demolition scope validation
- •Heritage building measured documentation
- •Construction sequencing and hold-point definition
- •Forensic baseline record creation
Stack & equipment
Technologies used
Case experience
Related projects
HeritageSouth Brisbane, QLD
Queensland Art Gallery External Works
Structural investigation of Queensland Art Gallery external works to establish concrete thickness, reinforcement placement, spacing, cover, and estimated bar diameters for engineering design and planning.
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InfrastructureHelensvale, QLD
Hope Island Bridge As-Built Detailing
GPR-led investigation of Hope Island Bridge to establish as-built detailing of concrete balustrades, slab zones, and beam elements for design support.
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IndustrialWacol, QLD
Wacol Warehouse Drainage Investigation
Structural investigation of the Wacol Warehouse drainage channel to identify subsurface voids and defects and quantify cracking and displacement behavior along the channel system.
View projectFAQ
Common questions about As-Built Detailing
Is GPR the same as X-ray?+
No. GPR is not X-ray. Ground Penetrating Radar uses low-power electromagnetic radio waves and receives reflected signals to map subsurface features from one accessible surface. It does not use ionising radiation, does not require radiation exclusion zones, and is generally suitable for occupied environments. X-ray (radiography) is a different method that uses ionising radiation and stricter safety controls.
What does an as-built detailing package include?+
A standard package includes site capture methodology, marked-up plans, identified reinforcement and post-tension risk zones, mapped service corridors where detectable, confidence zoning, and recommended verification hold points. For projects requiring model-based coordination, SiteOps can also provide CAD/BIM-ready overlays and data extracts aligned to the project grid and level set-out.
Can this be done when original drawings are missing or unreliable?+
Yes. As-built detailing is specifically designed for that situation. We establish a measured baseline directly from site conditions, then highlight discrepancies between observed conditions and any available legacy documentation. This allows design and construction teams to make decisions on current reality instead of assumptions.
How accurate is as-built detailing for live project decisions?+
Accuracy depends on access, element type, and capture method; accordingly, SiteOps reports confidence by zone rather than claiming a single blanket tolerance. High-confidence zones can be used for immediate coordination, while medium-confidence areas are flagged for controlled verification prior to irreversible works such as drilling, cutting, or fixing.
When should we engage as-built detailing in the project timeline?+
The highest value is early - during concept or developed design, before procurement and definitely before site cutting starts. Early as-built capture reduces redesign cycles, prevents latent-condition surprises, and allows contractors to plan methodology and sequencing with fewer variations during delivery.
Need As-Built Detailing?
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