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    Base Infrastructure Schemas (BIS)

    Guide

    • Introduction

      • Overview
      • Federated Digital Twins
      • Modeling with BIS
      • Organization of BIS
      • Fabric of the Universe

    • Fundamentals

      • Element Fundamentals
      • Codes
      • FederationGuids
      • ElementAspect Fundamentals
      • Mixins
      • Model Fundamentals
      • Relationship Fundamentals
      • Schemas (“Domains”)
      • Classifying Elements
      • Type Definitions
      • Categories

    • Data Organization

      • Information Hierarchy
      • Modeling Perspectives
      • Top of the World
      • Single Responsible-Party Principle
      • Organizing Models and Elements
      • Spatial Composition
      • Modeling Systems
      • Organizing Definition Elements

    • Physical Modeling Perspective

      • 3D Guidance
      • PhysicalModel Hierarchy
      • Physical Models and Elements
      • Physical Materials
      • Quantity Takeoffs: Guidelines

    • Other Modeling Perspectives

      • Functional Models and Elements
      • Analysis Models and Elements
      • Information Models and Elements

    • Schema Evolution

      • Schema Customization
      • Data Evolution Across Time
      • Schema Versioning
      • Schema Production Status
      • Schema Design Guidelines

    • BIS Naming Guidelines

      • Rules and Recommendations
      • Special Terms
      • Summary of Exceptions
      • Abbreviations and Acronyms
      • Relationship “Strengths”

    • Other topics

      • BIS Schema Units
      • BIS Schema KindOfQuantities
      • BIS Schema Validation

    • References

      • BIS Glossary
      • Class-diagram Conventions
      • Instance-diagram Conventions

    Domain Schemas

    • Core domains

      • Overview
      • Analytical
      • BisCore
      • - Drawings & Sheets
      • - Provenance in BIS
      • Functional
      • Generic
      • PhysicalMaterial

    • Common domains

      • Overview
      • AECUnits
      • ClassificationSystems
      • DistributionSystems
      • DocumentMetadata
      • Linear Referencing
      • Profiles
      • SpatialComposition

    • Discipline-Physical domains

      • Overview
      • Building domains
      • Civil domains
      • Construction
      • Earthwork
      • Structural domains
      • Terrain

    • Discipline-Other domains

      • Overview
      • Structural domains

    • Standard schemas

      • Overview
      • BisCustomAttributes
      • CoreCustomAttributes
      • ECDbMap
      • Formats
      • Units

    Engineering Content (EC)

    • Overview
    • ECSchema
    • ECClass
    • ECEntityClass
    • ECMixinClass
    • ECStructClass
    • ECCustomAttributeClass
    • ECRelationshipClass
    • ECProperty
    • ECCustomAttributes
    • ECEnumeration
    • KindOfQuantity
    • PropertyCategory
    • PrimitiveTypes
    • CustomAttribute Container Types
    • Unit
    • Constant
    • Phenomenon
    • UnitSystem
    • Format
    • ECName
    • Changes Between ECObjects 2 and 3
Base Infrastructure Schema › Domains › Common Domains
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Common domains

The following domains lay out the Common layer in the BIS hierarchy. They define abstract concepts and patterns used by multiple disciplines.

AECUnits

ClassificationSystems

DistributionSystems

DocumentMetadata

Linear Referencing

Profiles

SpatialComposition

Last Updated: 15 May, 2024

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  • Common domains
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