Building Models and Building Modelling Research Presentation Theoretical Foundation Aalborg University – Associate prof. Kaj A. Jørgensen Aarhus School of Architecture – Associate prof. Jørn Skauge Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Introduction The ”Sorthøj-project” Launch of research about building modelling Support from ”Boligfonden Kuben” Research work performed – two research methodologies Work on Sorthøj modelling – explorative research Modelling tools have been studied Modelling work has been carried out – problems, experiences, etc. Study of modelling methodologies Work on the report – deductive research Identification and description of theoretical foundation Deduction of theories about building modelling Primary building modelling activities Building modelling framework Some consequences for building modelling in practice Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Presentation Outline Problems about building models and building modelling Redundant data in building construction projects Need for one united building model Building modelling is more than 3D modelling Theoretical foundation for models Generic model component attributes and internal structure Modelling matrix Function/process driven or data driven modelling approach Discussion Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Presentation Outline Problems about building models and building modelling Redundant data in building construction projects Need for one united building model Building modelling is more than 3D modelling Theoretical foundation for models Generic model component attributes and internal structure Modelling matrix Function/process driven or data driven modelling approach Discussion Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Problems about building models and building modelling Descriptions and drawings are primarily document based Prepared by IT tools but printed and distributed Drawings are slowly moving from 2D to 3D 2D is more difficult to interpret than 3D Descriptions and drawings exist in multiple copies Problems with data maintenance – all copies must be updated Redundant data will often lead to inconsistency Inconsistent data causes wrong decisions Databases have been the solution to these problems for 30 years Redundancy handled by structuring information and data Data represented according to a well prepared data model Maintenance operations are supported by integrity constraints Concurrency issues are handled by transaction management What is needed? Building model represented as one united model – Model servers Modelling tools and applications must work with model servers No distribution of data – users select data when needed Data is authorised according to work flow and extracted by end users Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Physical Building and Computer-Based Building Model Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Data Extractions and Presentation Forms Augmented reality Virtual reality Graphs Picture Lists Planned flight/tour Hierarchies Tables Scale model – 3D print Etc. Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Physical Building and Building Model Building and model have separate lives Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Building Modelling, Analysis and Simulation Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Data Exchange – Building Model Representation Data exchange based on file Building Model Represented as One United Model Data exchange through model server Data maintenance versus data extraction Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Presentation Outline Problems about building models and building modelling Redundant data in building construction projects Need for one united building model Building modelling is more than 3D modelling Theoretical foundation for models Generic model component attributes and internal structure Modelling matrix Function/process driven or data driven modelling approach Discussion Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Two Kinds of Models Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Abstraction Level versus Modelling Approach Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Space Concept: User Spaces + Construction Spaces User spaces and construction spaces are complementary to each other Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Generic Model Component Concepts to clarify: Object Object-orientation Component Building Information Model Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Component Type and Component Instances Component types Primary content of information models Identification - definition - specification Attributes - name, data type, constraints Relationship types reference types collection types can be defined by special attributes Components Generated from types Indefinite number of instances Structures Based on relationship types Access paths to objects Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Wall Object: Attributes and Relationships betw. Objects Relationships between objects Objects represented in a data structure Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Different modelling approaches Modelling Matrix Different modelling approaches Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Traditional Phases of 3D Building Modelling ProIT – Finland Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

Presentation Outline Problems about building models and building modelling Redundant data in building construction projects Need for one united building model Building modelling is more than 3D modelling Theoretical foundation for models Generic model component attributes and internal structure Modelling matrix Function/process driven or data driven modelling approach Discussion Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design

The End Kaj Jørgensen, Aalborg University, Department of Production and Jørn Skauge, School of Architecture Aarhus, Department of Architectural Design