BIM

LOD 200 (Schematic Design)

Generic systems, approximate quantities, size, shape, location, orientation. Suitable for schematic stage.

Also calledlod 200level of development 200

Related on InfraLens

CODES

ISO 19650

Definition

LOD 200 (Level of Development 200) is the second level in the BIM Forum LOD Specification, representing 'Schematic Design'. At LOD 200, model elements are graphically represented with approximate quantities, size, shape, location, and orientation. Non-graphic information may also be attached to the model element. LOD 200 is the typical level for design-development stage architectural and structural BIM models — sufficient for design coordination, clash detection of major systems, and approximate cost estimation. Indian Standards and references: ISO 19650-1:2018 (BIM information management), the BIM Forum LOD Specification, NBC 2016 Part 11 (Building Automation), and NBIMS-IN (National BIM Standard - India in development).

LOD 200 element examples: (a) An architectural wall is shown as a 3D solid with approximate thickness and length but generic representation (no specific material build-up, no joint details). (b) A structural column is shown as a 3D solid with approximate cross-section dimensions but no specific reinforcement, base plate, or end conditions. (c) MEP equipment is shown with approximate envelope dimensions and connection points but no specific manufacturer model. The model is suitable for general space planning, conflict detection between major building systems, and approximate cost analysis at ±15-20% accuracy.

Progression to higher LODs: LOD 300 (detailed design) — specific dimensions, exact location, connection details; LOD 350 (construction documentation) — fabrication-ready details for building elements that are subject to coordination challenges; LOD 400 (fabrication) — manufacturer-specific information, complete connection details; LOD 500 (as-built/FM) — field-verified element representation suitable for facility management. Indian projects vary: government projects increasingly mandate LOD 200-300 for design-stage models; commercial projects achieve LOD 350-400 at construction stage; only specialty projects (airports, metro stations) routinely reach LOD 500 with full FM integration. LOD 200 is the typical 'starting point' for serious BIM adoption — too simple to be useful for detailed design, too complex to be casually generated.

Where used

Design-development stage architectural BIM models
Schematic-level structural BIM models
Approximate cost estimation
Major-system clash detection
Initial 4D scheduling (LOD 200 in time)

Acceptance / threshold

Per BIM Forum LOD Specification: graphic representation with approximate dimensions; non-graphic information optional; suitable for schematic design but not detailed coordination or fabrication.

Site example

Site reality: a Bengaluru office tower project required LOD 300 BIM for tendering but the contractor delivered LOD 200 — schematic-level information. Major coordination issues emerged during construction: HVAC ducts conflicted with structural beams in 30% of locations. Re-modelling at LOD 350 took 6 weeks and cost ₹14 lakh. Always specify the required LOD explicitly in the BIM Execution Plan; LOD 200 is inadequate for construction-stage coordination.

Frequently asked

What is LOD 200 in BIM?

LOD 200 (Level of Development 200) is the BIM Forum specification level representing schematic design. Model elements are graphically represented with approximate dimensions, generic appearance, and may have attached non-graphic data. Suitable for design-development, major-system clash detection, and approximate cost estimation at ±15-20% accuracy. Higher LODs (300-500) are needed for detailed design, fabrication, and as-built.

What is the difference between LOD 200 and LOD 300?

LOD 200 (schematic): generic 3D shape, approximate dimensions, suitable for space planning and major coordination. LOD 300 (detailed design): specific dimensions, exact locations, defined connections, suitable for tendering and detailed clash detection. The progression LOD 200 → 300 → 400 → 500 represents increasing specificity, accuracy, and cost — LOD 300 typically takes 40-60% more modelling time than LOD 200.

Is LOD 200 enough for an Indian construction project?

Depends on project stage. LOD 200 is appropriate for design-development stage (concept, scheme design). LOD 300 is needed for detailed design and tendering. LOD 350-400 is required for construction-stage coordination and fabrication. For construction without rework, LOD 350+ is recommended. Indian government projects increasingly mandate LOD 200-300; commercial high-end projects require 350-400; specialty projects may need 500.

Related bim terms

Building Information Modelling (BIM)

ISO 19650 information management with BIM. India has no published IS BIM standard — projects reference ISO directly.

ISO 19650 Series

5-part international standard for BIM information management. Parts 1-5: concepts, delivery, operations, exchange, security.

Industry Foundation Classes (IFC)

Open ISO standard file format for BIM exchange. IFC 4.3 ADD2 supports buildings + infrastructure.

Level of Development (LOD) / LOIN

AIA LOD 100-500 vs BIMForum LOD Spec vs ISO 7817-1 LOIN. Defines geometric/info detail per object per milestone.

Common Data Environment (CDE)

Single trusted location for all project information. Mandatory under ISO 19650 with WIP→Shared→Published→Archived states.

BEP & EIR — BIM Execution Plan / Exchange Information Requirements