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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
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

Overview
Core domains
Common domains
Discipline-Physical domains
Discipline-Other domains

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 > guide > references

BIS Guide - References

BIS Glossary
Class-diagram Conventions
Instance-diagram Conventions

Last Updated: 21 November, 2022

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