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ICT Platform for Object Oriented Knowledge

Håvard Bell, Ph.D.

Norwegian Building Research Institute

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IFDIFC

IFG

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IFC

Industry Foundation Classes

From DRAWING to MODEL

Not lines and surfaces, but building OBJECTS

Way of exchanging building information

IFCArchitect

Authority Builder

Owner

Model server

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IFC + IFD IFC + IFD produkt produkt modellmodell

Images from: Byggforsk, Olof Granlund, NBLN University of California, Stanford University

Building design-Functional spec.-Estimates-Budget-Specs

Knowledgebase-Predefined solutions -Design sheets-In house knowledge bases

Laws and Regulations-Building rules-Building regulations

CAD software-Drawings, calculations-Architect, engineer,…

VRML-Visualization, 3D models

Simulations-Comfort-HVAC-LCC-Light & sound-Insulation-Fire-Environment-Lifetime-

analysis

Building specifications-NS 3420 (bill of quantity)-NS 3451-Calculations, estimates

Product ordering-Product databases-Price databases

FDVU-Rental, sale-Maintenance-Warranties

Remodeling, refurbishing-Remodeling-Demolition-Refurbishing

Progress and schedules-Scheduling-Logistics, 4D

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Effect of IFC?

“Low friction information logistics”

Lars C. Christensen, Selvaag Blue Think

New decision processes:

Earlier access to information

Possible to simulate decisions and see the consequences earlier

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Information Exchange in the Building Process

Information-modelcentrerd

Documentcentered

Check out/check in data

File exchange:

Data is not exchanged, drawings are (e)mailed.

Model exchange:

Data is exchanged on application specific formats and drawings are (e)mailed.

Model server:

Data is exchanged using a neutral format. Data is available in a neutral model server and is accessed from different applications.

Drawing

Model

Legend:

Document

Model file

Standardized model data

Datacentrerd

(Thanks to Lars C. Christensen, Selvaag Blue Think)

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IFD

International Framework for Dictionaries

ISO (DIS) 12006-3

Needed to define concepts and relations

Are we talking about the same thing?

The semantics of IFC

Adoptable on national or project levels

A “column” might be defined as an IfcColumn plus some customized attributes, or even attached objects

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日本語！Norsk!? ?

English!IFD(BARBi)

Communication Method?IFCSpeaking

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BARBi Bygg og Anlegg Referanse Bibliotek

Norwegian implementation of IFD

Complete and working implementation of IFD 999 activities/processes, 40901 names, 6600 definitions,

1939 properties, 8757 objects/subjects, ca 1300 relations, etc..

Based on EXPRESS (EDM, EPM Tech.)

Will provide a free reference library to the Norwegian Building Industry

Anyone can access and use it

Import functions from LexiCon (Netherlands's IFD implementation)

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BARBi Example I:

A concept may consist of:

Global unique ID

Names (may be several)

Definition

Unit(s)

Value(s)

Etc.

Products are defined through properties

A set of properties (concepts) and perhaps values, defines a product

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BARBi Example II:

Door:

In Norway:

– “Høyde” (height)

– “Bredde” (width)

– “Brannklasse” (fire category)

In United Kingdom:

– “Height”

– “Width”

– “Fire Category”

– “Security Class” DFI7362LHAS00CC

E34FJ55693HD340

E34FJ55693HD340

A3R33693U88CC3

A3R33693U88CC3

8944GGQQL9883C

8944GGQQL9883C

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ServiceProvider

Model

Produktleverandør

Produktleverandør

Manufacturers

Country a

Produktleverandør

Produktleverandør

Manufacturers

Country b

ServiceProvider

?$$$$$$$$$$$$$$

Owner

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BARBi and China

Letter of Intention signed between Chinese authorities and Norway

June 2004

Provide a Chinese IFD platform

Support in establishing IFD data

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IFG

IFC enhancement for the GIS world

Close to completion

Allows the 2D map world to talk to the 3D building world and vice versa

You know where the building is in the world

Here!

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IFG Aim:

3D? Yes,but what is it?

3D? Yes,here it is!

3D

Kilde: Statens Kartverk

Today

IFG

(Thanks to Jøns Sjøgren, Home Builders Association)

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NBI’s Knowledge Base

Over 800 design sheets

Best practice

Research

Etc.

Over 50 years of experience

Highly regarded in the industry

Example:

How to properly lay a bathroom floor

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NBI’s Knowledge Base

Highly used…

…and not used

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ApplicationApplication

NBI’s Knowledge Base

NBI’sKnowledge

Base

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Three Ingredients

NBI’sKnowledge

Base(IFC/IFD)

BARBi(IFD)

ModelServer(IFC)

NBI Service

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Lifetime Analysis

Factor Method

Empirical data collections

Theoretical Formulas

Statistical Analysis

Developed over time

(Not my area of expertise…)

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NBIService

Lifetime of Building?

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What material?

NBIService

IFCModel

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It’s 32DFE854KE

NBIService

IFCModel

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What is 32DFE854KE?

NBIService

BARBi

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It’s Aluminum

NBIService

BARBi

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OR…

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I don’t know

NBIService

BARBi?

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NBIService

What is 32DFE854KE?

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NBIService

It’s Aluminum

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What is definition of Aluminum?

NBIService

BARBi

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It’s Aluminum

NBIService

BARBi

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32DFE854KE is Aluminum

NBIService

IFCModel

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What is Lifetime of Aluminum?

NBIService

NBIKnowledge Base

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40 Years

NBIService

NBIKnowledge Base

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Aluminum at your place lives 40 Years

NBIService

IFCModel

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NBIService

40 Years

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NBIService

Thanks!

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IFCModel BARBi

NBIKnowledge

Base

NBIService

Lifetime of building? What material?

Well defined material?

Get lifetime datafor model’s area

40 years

Overview

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Demo…

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Questions?

havard.bell@byggforsk.no