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Level of Development (LOD) Standards
Definitions of LOD 100–500, how they map to scan-to-BIM deliverables, and level-of-accuracy expectations.
Last updated: May 2026
1. LOD Definitions
ScanLogiq follows the BIMForum/AIA Level of Development framework. LOD describes the reliability of an element's geometry and information — not simply how detailed it looks.
| LOD | Definition |
|---|---|
| 100 | Conceptual — symbolic representation, no reliable geometry. |
| 200 | Approximate — generic geometry with approximate size, shape, and location. |
| 300 | Precise — accurate size, shape, and location measured from reality capture. |
| 350 | Coordinated — LOD 300 plus interfaces and connections to other systems. |
| 400 | Fabrication — detailing/fabrication-level geometry and information. |
| 500 | As-built / verified — field-verified representation of installed conditions. |
2. Applying LOD to Scan to BIM
- Most existing-conditions BIM is delivered at LOD 200–300; MEP-coordinated work is typically LOD 350.
- The contracted LOD governs both modeling detail and the model-to-cloud tolerance in the BIM Modeling Standards.
- LOD may vary by discipline or system within a single project — always document the per-system LOD.
3. Level of Accuracy (LOA)
Because scan-to-BIM derives from measured reality, we also report Level of Accuracy per USIBD guidelines, describing how closely the model represents captured conditions.
| LOA | Represented accuracy (upper range) |
|---|---|
| LOA 20 | ± 50 mm |
| LOA 30 | ± 15 mm |
| LOA 40 | ± 5 mm |
| LOA 50 | ± 1 mm |
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