LOD 500 (As-Built / FM)

LOD 500 (Level of Development 500) is the BIM Forum specification level representing 'As-Built / Facility Management'. Model elements are field-verified — actual constructed dimensions, locations, and properties replace design intent. Suitable for facility management (FM), building maintenance, and operational asset management. Per BIM Forum LOD Specification + ISO 19650-3 (operational phase information management), LOD 500 is the highest level of development.

LOD 500 typical elements: (a) Field-verified beam dimensions and locations — confirmed via post-construction survey. (b) MEP equipment with as-installed connections, model numbers, and operational data. (c) HVAC ductwork actual routing (vs design routing). (d) Concealed elements verified by ground-penetrating radar or sub-construction documentation. (e) Performance data (energy, water, occupancy) linked to elements for facility management. Indian projects achieving LOD 500 typically have: (1) Post-construction survey of all major elements. (2) MEP equipment data linked to BIM model (manufacturer, model, warranty, maintenance schedule). (3) Linked to facility management software (IBM TRIRIGA, Archibus). (4) Used for ongoing operations and maintenance.

Indian application: (1) Major commercial high-rise — facility management of multi-tenant offices. (2) Airports and railway stations — operational management of complex facilities. (3) Hospitals — equipment tracking and warranty management. (4) Industrial plants — predictive maintenance using BIM-linked sensor data. The most-overlooked aspect of Indian LOD 500: handover protocol. Many Indian projects don't formally hand over BIM model to facility management at occupancy — losing 80%+ of the design-stage BIM investment. Best practice: ISO 19650-3 compliant handover with full asset information model (AIM).