BIM Glossary Essential BIM & BIM Automation Terms Explained

3D BIM

3D BIM refers to the creation of three-dimensional digital models that represent the physical and spatial characteristics of a building or infrastructure asset. It forms the foundation of all BIM workflows by combining geometry with embedded object-level data.

3D BIM improves visualization, design coordination, and spatial understanding, enabling stakeholders to identify design issues early and reduce reliance on disconnected 2D drawings.

4D BIM

4D BIM integrates time and scheduling data with 3D BIM models to simulate construction sequencing and project timelines. It links model elements to construction activities, enabling teams to visualize how a project will be built over time.

4D BIM is commonly used for construction planning, progress tracking, logistics optimization, and identifying potential scheduling conflicts before construction begins.

5D BIM

5D BIM combines cost information with 3D and 4D BIM models to enable real-time cost estimation and financial planning. Each model element is associated with quantity and cost data, allowing dynamic budget analysis as designs evolve.

5D BIM improves cost control, supports value engineering, and helps project teams make informed decisions by understanding the financial impact of design and construction changes.

6D BIM

6D BIM focuses on sustainability, energy performance, and lifecycle analysis of a built asset. It extends BIM data to support energy modeling, carbon analysis, and long-term operational efficiency.

6D BIM is widely used to evaluate environmental performance, reduce energy consumption, and support green building certifications by analyzing how design decisions impact sustainability outcomes.

7D BIM

7D BIM represents the use of BIM for facility management and operations after construction is complete. It connects the as-built model with asset data, maintenance schedules, and operational workflows.

7D BIM enables building owners and facility managers to manage assets more efficiently, improve maintenance planning, and support digital twin and smart building initiatives.

AI-Integrated Revit Modeling

AI-Integrated Revit Modeling combines artificial intelligence with Revit-based BIM authoring.

It is used to automate modeling decisions, detect patterns, and enhance productivity through intelligent, data-driven workflows.

As-Built Model

An As-Built Model represents the verified condition of a building after construction is completed.

Delivered at LOD 500, it is used for facility management, renovations, and digital twin foundations.

Asset Information Model (AIM)

An Asset Information Model contains verified asset data required for managing a building during its operational phase.

AIMs are derived from BIM models at handover and are used by CAFM and facility management systems.

Augmented Reality (AR) in BIM

Augmented Reality in BIM overlays digital BIM models onto the physical environment.

It is used on-site to compare design intent with real-world conditions using AR-capable devices and apps.

Autodesk Platform Services (APS)

Autodesk Platform Services is a cloud platform that provides APIs for accessing, processing, and visualizing BIM data.

APS is used to build web-based BIM viewers, data extraction tools, and cloud automation outside the Revit desktop environment.

BIM (Building Information Modeling)

BIM is a digital method for creating and managing structured information about a built asset across its lifecycle.

It is used for design, coordination, documentation, and handover, typically in BIM authoring tools like Revit and interoperable formats like IFC.

BIM Automation

BIM Automation refers to the use of scripts, rule engines, APIs, and software tools to automate repetitive and rule-based BIM tasks. These tasks may include model validation, data extraction, sheet generation, and standards enforcement.

BIM automation improves productivity, reduces manual errors, and ensures consistency across large and complex projects, especially in enterprise-scale BIM environments.

BIM Cloud Integration

BIM Cloud Integration connects BIM data with cloud platforms for access, automation, and collaboration.

It enables scalable workflows such as model viewing, data exchange, and system integration using APIs and web services.

BIM Compliance

BIM Compliance refers to validating whether a BIM model meets defined standards, rules, and project requirements.

It is often checked using automated model review tools and rule-based validation workflows.

BIM Coordination

BIM Coordination is the collaborative alignment of multi-disciplinary BIM models into a coordinated project environment.

It is carried out using Revit, Navisworks, and CDE platforms to minimize clashes and ensure system compatibility.

BIM Design

BIM Design is the use of BIM models to define design intent, spatial relationships, and system layouts during planning and design.

It supports early coordination and analysis and is commonly executed in tools like Revit before moving to coordination and review workflows.

BIM Execution Plan (BEP)

A BIM Execution Plan defines how BIM will be implemented, managed, and delivered on a project.

It outlines roles, standards, LOD requirements, and workflows to ensure consistent BIM coordination.

BIM Extractor

A BIM Extractor is a tool or process used to pull structured data from BIM models.

It is commonly used to extract quantities, parameters, and asset data from Revit or IFC models for reporting and integration.

BIM for Operations

BIM for Operations refers to using BIM data to support day-to-day building management and maintenance.

It connects as-built BIM models with FM, CAFM, and digital twin platforms for operational decision-making.

BIM Modeling

BIM Modeling is the creation of intelligent model elements with geometry and embedded data such as type, quantity, and parameters.

It is typically produced in BIM tools like Revit and used to generate drawings, schedules, quantities, and coordinated model outputs.

BIM Modeling Automation

BIM Modeling Automation is the automatic creation or update of model elements based on parameters, rules, or external data.

It supports repeatable, standards-driven modeling and often leverages Revit, Dynamo graphs, and custom add-ins for execution.

BIM Review Automation

BIM Review Automation automates the checking of BIM models against predefined rules and standards.

It is used to validate compliance, detect issues, and reduce manual QA/QC effort during coordination and delivery.

BIM Software

BIM Software refers to applications used to create, manage, and analyze Building Information Models. Common BIM software platforms support 3D modeling, data integration, collaboration, and interoperability across different disciplines.

BIM software enables workflows such as model coordination, automation, simulation, documentation, and integration with cost, scheduling, and facility management systems.

BIM Standards

BIM Standards are documented rules that define how BIM models should be created, structured, and delivered.

They ensure consistency across teams and often align with ISO 19650, IFC, and organizational BIM guidelines.

BIM Workflow Automation

BIM Workflow Automation automates connected BIM processes from modeling to validation, documentation, and data exchange.

It often combines Revit, Navisworks review steps, and APS/Forge integrations to create repeatable, scalable BIM pipelines.

CAD to Revit Converter

A CAD to Revit Converter transforms 2D CAD drawings into structured BIM models.

It is used to migrate legacy CAD data into Revit workflows, enabling coordination, automation, and modern BIM usage.

CAFM Software

CAFM Software is used to manage facilities, assets, spaces, and maintenance activities using structured building data.

In BIM workflows, it consumes LOD 500 or COBie data exported from Revit or IFC models for operational use.

Carbon Analysis in BIM

Carbon Analysis in BIM evaluates the environmental impact of a building by measuring embodied and operational carbon using model data.

It uses BIM geometry, materials, and quantities from tools like Revit to support lifecycle assessment, net-zero planning, and carbon-aware design decisions including automated BIM Star Rating Analysis based on EU standards.

Change Detection

Change Detection identifies differences between BIM model versions across design or coordination updates.

It is used to track geometry and data changes and assess their impact on coordination and planning.

Clash Detection

Clash Detection is the process of identifying conflicts between architectural, structural, and MEP elements within a BIM model.

It is commonly performed using Autodesk Navisworks Manage and Revit coordination models to resolve issues before construction.

COBie

COBie is a standardized data format used to deliver structured asset information for facility management.

It is typically extracted from Revit or IFC models and integrated with CAFM or FM systems at handover.

Common Data Environment (CDE)

A Common Data Environment is a centralized platform for storing, managing, and sharing BIM project information.

CDEs support collaboration, version control, and approvals and are a core requirement under ISO 19650 standards.

Coordination Rules

Coordination Rules define constraints that govern how architectural, structural, and MEP systems interact.

They are applied during coordination reviews to prevent clashes and ensure compliant system layouts.

Data Validation

Data Validation ensures that non-graphical BIM information is accurate, complete, and correctly structured.

It is used to verify parameters, classifications, and asset data before handover or system integration.

Digital Twin in BIM

A Digital Twin is a virtual representation of a physical asset that reflects its design, condition, and operational state.

It enables real-world and on-site model visualization by combining BIM data with visualization engines like Unity and Unreal, often integrated with IoT, facility data, and GPS.

Dynamo for Revit

Dynamo for Revit is a visual programming tool used to automate and control BIM modeling through node-based logic.

It enables rule-based modeling, data manipulation, and repetitive task automation directly within Revit workflows.

Energy Modeling in BIM

Energy Modeling in BIM analyzes how a building will consume energy by using geometry, systems, and material data from BIM models. Also includes generating Energy efficient building using BIM services. Efficiently use tools like REVIT and Bentley Systems to automate the process.

It is applied during early and detailed design using BIM data from tools like Revit to support energy-efficient, performance-driven design decisions.

Facility Management BIM

Facility Management BIM refers to the use of BIM models for operating and maintaining buildings after construction.

It relies on as-built models and integrates with CAFM or FM platforms to support maintenance and asset tracking.

FM Integration with BIM

FM Integration with BIM is the process of connecting BIM models with facility management systems.

It enables asset data, maintenance schedules, and space information to flow from Revit or IFC into FM platforms.

Forge API

Forge API is a set of cloud APIs used to work with design and BIM data programmatically.

It enables model viewing, data extraction, and integration of BIM information into custom web and enterprise applications.

Forge Viewer

Forge Viewer is a web-based visualization component used to view and interact with BIM and design models in the browser.

Built on Autodesk Platform Services (APS), it supports model navigation, metadata access, and cloud-based BIM visualization without requiring native software.

Generative Design

Generative Design is a computational approach where multiple design options are automatically generated based on defined goals and constraints.

In BIM workflows, it is used to explore layouts, performance outcomes, and design variations using rule-based or AI-driven engines.

IFC (Industry Foundation Classes)

IFC is an open, neutral data format used to exchange BIM information between different software platforms.

It enables interoperability between tools such as Revit and Navisworks and supports openBIM workflows.

Interoperability

Interoperability refers to the ability of different software systems to exchange, interpret, and reuse data accurately.

In BIM workflows, it enables one-click data transfer between tools such as Revit, coordination platforms, cloud viewers, and FM systems, allowing teams to migrate models without manual conversion.

ISO 19650

ISO 19650 is an international standard that defines how BIM information should be managed and exchanged.

It governs workflows around CDE usage, naming conventions, roles, and data governance in BIM projects.

Issue Tracking

Issue Tracking manages clashes, errors, and coordination issues identified during model reviews.

Issues are logged, assigned, and resolved using coordination platforms and structured review workflows.

LOD (Level of Development)

LOD (Level of Development) defines the reliability and completeness of a BIM model element at different stages of a project. It specifies how much detail, accuracy, and information a model component contains and how it can be used by downstream stakeholders.

LOD standards help align expectations between project teams by clearly defining what information is available and what decisions can be made at each phase of design and construction.

LOD 100

LOD 100 represents the conceptual level of a BIM model. At this stage, elements are shown as basic massing or symbols without precise geometry, dimensions, or detailed data.

LOD 100 models are typically used for early feasibility studies, space planning, and high-level project visualization rather than technical coordination or construction documentation.

LOD 200

LOD 200 indicates an approximate level of geometry and information. Model elements include generalized shapes, approximate sizes, locations, and orientations but are not yet fully accurate or fabrication-ready.

LOD 200 models support design development, preliminary coordination, and early cost estimation, helping teams evaluate design options before committing to detailed construction decisions.

LOD 300

LOD 300 represents a precise and coordinated level of BIM modeling where elements are defined with accurate geometry, dimensions, locations, and quantities.

At LOD 300, the model can be reliably used for construction documentation, coordination between disciplines, and detailed quantity take-offs. Most design-stage approvals and regulatory submissions rely on LOD 300 models.

LOD 400

LOD 400 includes fabrication-level detail required for manufacturing, assembly, and installation. Model elements contain complete geometry, connections, tolerances, and fabrication-specific data.

LOD 400 models are typically developed by contractors, fabricators, or specialist consultants and are used for shop drawings, prefabrication, and on-site installation workflows.

LOD 500

LOD 500 represents the as-built condition of a facility. BIM elements at this level reflect verified field conditions and accurately capture what has been constructed and installed.

LOD 500 models are primarily used for facility management, operations, maintenance planning, and digital twin implementations, serving as a long-term information asset for owners and operators.

Mixed Reality in BIM

Mixed Reality in BIM blends digital BIM content with the physical environment while allowing interaction.

It supports advanced coordination and on-site decision-making using spatial computing devices.

Mobile BIM Viewer

A Mobile BIM Viewer allows users to view and interact with BIM models on smartphones and tablets.

It is used for on-site access, reviews, and coordination, often powered by cloud viewers or custom apps built on APS, Unity, or similar platforms.

Model Audit

A Model Audit is a structured review process used to assess the quality and consistency of a BIM model.

It is conducted during design and delivery using rule-based checks, coordination platforms, and validation tools.

Model Cloud Analysis

Model Cloud Analysis refers to processing and analyzing BIM models using cloud-based platforms.

It enables scalable tasks such as data validation, extraction, visualization, and performance analysis using APS or similar cloud services.

Model Coordination

Model Coordination is the technical process of combining discipline-specific BIM models into a single federated model.

This process is typically executed in Navisworks to validate geometry, data consistency, and constructability.

Model Health Check

A Model Health Check evaluates the overall usability, structure, and performance of a BIM model.

It identifies issues that may impact coordination, automation, or long-term model maintainability.

Model Validation

Model Validation ensures that a BIM model meets defined standards, requirements, and data quality rules.

It is often automated using rule-based checks within coordination or BIM automation workflows.

OpenBIM

OpenBIM is a collaborative approach that promotes open standards and vendor-neutral BIM data exchange.

It relies on standards like IFC, COBie, and ISO 19650 to enable cross-platform collaboration.

Parametric Modeling

Parametric Modeling defines BIM elements using parameters that control geometry and behavior.

It allows models to update automatically when inputs change and is widely used in automated and generative BIM workflows.

Predictive Models

Predictive Models use historical and real-time data to forecast future outcomes related to design, construction, or operations.

In BIM contexts, they help anticipate risks, performance issues, or maintenance needs using analytics and AI techniques.

QA/QC in BIM Models

QA/QC in BIM models refers to quality assurance and quality control processes applied to ensure accuracy and reliability.

It involves checking geometry, data, and standards using coordination tools and automated model review workflows.

Real-Time BIM Visualization

Real-time BIM Visualization enables interactive exploration of BIM models with immediate visual feedback.

It is commonly implemented using Forge, React, SWIFT, Kotlin, WebGl for the Web and Mobile applications and game engines like Unity or Unreal for high-fidelity rendering and simulation.

Revit Add-in

A Revit Add-in is a custom extension that adds new features or automations inside Autodesk Revit.

Built using the Revit API, add-ins can support BIM extraction, model QA/QC, documentation automation, and system integration.

Revit Automation

Revit Automation streamlines Revit workflows using scripts, add-ins, and APIs to perform repetitive or rule-based tasks.

It is implemented through Dynamo, .NET add-ins, and the Revit API, and can extend to APS/Forge integrations for scale.

Revit API

The Revit API allows developers to programmatically access, create, and modify elements within Autodesk Revit models.

It is used to build automation tools, custom workflows, and add-ins that extend Revit functionality beyond manual modeling.

Room Extractor

A Room Extractor is a tool that identifies and extracts room or space data from BIM models.

It is commonly used to retrieve room geometry, areas, and parameters from Revit or IFC models for analysis, reporting, or FM integration.

Rule-Based BIM

Rule-Based BIM applies predefined logic to control how BIM models are created and validated.

It is implemented using tools like Dynamo, Revit API, or automation engines to enforce consistency and standards.

Rule Engine

A Rule Engine applies predefined logic to automatically evaluate BIM models against project or organizational standards.

It is used in automation workflows to detect errors, enforce naming conventions, and validate model data.

SDK (Software Development Kit)

An SDK is a collection of tools, libraries, and documentation that facilitates development for specific platforms, engines, or services. Examples include Meta Quest SDK and Google Play Games SDK.

Site Intelligence

Site Intelligence refers to the use of digital data to understand conditions, progress, and risks on a construction site.

It combines BIM data with site inputs such as schedules, sensors, or visual feeds to support informed planning and execution.

Standards Checker

A Standards Checker verifies whether a BIM model complies with defined standards and project guidelines.

It is commonly automated using rule engines and validation tools to ensure consistent delivery.

Unity-Based BIM Visualization

Unity-based BIM Visualization uses the Unity engine to render and interact with BIM models.

It is applied for mobile, AR, VR, and on-site BIM applications requiring real-time performance.

Unreal Engine BIM Visualization

Unreal Engine BIM Visualization focuses on high-fidelity rendering of BIM models.

It is used for photorealistic walkthroughs, simulations, and digital twin visualization scenarios.

Version Control

Version Control manages revisions and updates of BIM models throughout a project lifecycle.

It ensures traceability, prevents conflicts, and supports controlled collaboration across teams.

Virtual Reality (VR) in BIM

Virtual Reality in BIM provides immersive experiences by placing users inside a virtual building environment.

It is used for design validation, walkthroughs, and training using VR headsets and real-time engines.