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IFC, what is IAI about?IFC, what is IAI about?

• Vision– To enable software interoperability in the AEC/FM industry.

• Mission– To provide a universal basis for process improvement and

information sharing in the construction and facilities management industries.

• Deliverables– The key deliverable of the IAI is the IFC Object Model. The

term ‘model’ in this case means that it provides a formal specification of requirements which can then be used by software authors to create the IFC compliant software applications.

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IFC, wIFC, whoho are participating are participating??

• Global• AEC/FM professionals• Software companies• Research Institutes• Governmental supported development programs• List: Graphisoft, Autodesk, Nemetschek, Microsoft,

HOK, Kajima, London Underground, LBNL, Stanford ... 600 members

• Vera, IT och Fastighed, Corenet, Construction Research Center,,,

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IFCIFC based based exchangeexchange• IFC

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IFC, what is IAI about ?IFC, what is IAI about ?

From

Details

To• Vision

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IFC-modellens dækningsgradIFC-modellens dækningsgrad• IFC does not standardize data structures in

individual tasks, only the shared information

3D Modelling

Visualisation

ArchitecturalDesign

StructuralDesign

HVACDesign

BuildingServices

Equipment Maintenance

Marketing

FacilityMaintenance

Sale andrentalactivities

PropertyManagement

Repair andRenovation

IFC-modelIFC-model

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IFC, how is IFC structIFC, how is IFC structurureded??ISO/PAS 16739

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IFC, how is IFC developed?IFC, how is IFC developed?

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IFC, how is IFC developed?IFC, how is IFC developed?

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IFC, how is IFC developed?IFC, how is IFC developed?

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IFC, what can IFC do?IFC, what can IFC do?

Shape (explicit)

Shape (extrusions)beams, columns, pipes, ducts, conduit, walls, etc.

Shape (topology)line representations for pipe, duct, structural, etc.

Building Elementswall, door, window, roof, stairs, etc.

Jeff Wix, IFC2x2 Foundation for AEC/FMJeff Wix, IFC2x2 Foundation for AEC/FM

HVAC Equipmentchillers, fans, pumps, boilers, coils, cooling towers, heaters, heat exchangers, etc..

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IFC, what can IFC do?IFC, what can IFC do?

Relations Between Elementsholes, chases, voids, zones

Furnitureinc. system furniture

Electrical Elementstransformers, motors, generators, switches, protective devices, power and communication outlets panels, cubicles

Fire Protection Elementssprinklers, hose reels, hydrants, wet/dry rising mains

Sanitary ElementsWC’s, urinals, baths, bidets, traps gulleys

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IFC, what can IFC do?IFC, what can IFC do?Space and Space Structurespace, building storey, building part, building, site

Zones, compartmentsfire, workstation

Systemspiping, ducting, cable, structural

Lightingrendering and lighting, light sources, rendering material reflections and textures

Manholesmanholes, inspection chambers, access chambers, meter chambers, valve chambers

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IFC, what can IFC do?IFC, what can IFC do?

Grids2D/3D grid structures assignment of elements to grids

Controls, Instrumentssensor, actuator, controller, gauge, meter

Structural Elementsmembers, profiles, rebars, properties, joints, features, surface

Structural analysis:

structural members, boundary conditions, connections, supports, loads, etc.

Draughting

annotations on model space, line types, text, symbols, hatches, dimension lines

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IFC, what can IFC do?IFC, what can IFC do?

Environmental Impactembodied energy, CO2

Move Management

Asset Managementmaintenance history, inventories

Air Handling Unit

Boiler

Pump Set[Physical

Association]

PreheaterValves

Luminaires[Spatial Association]

Helprequest, action, permit, warranty, operation

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IFC, what can IFC do?IFC, what can IFC do?Time Seriestime related events

Constraintsrules, specifications, requirementstrigger conditions

Holes and Basesholes, sleeves, packing, framing, upstands, vibration isolation

Brackets and Fastenersbrackets, drop rods, steel sections, bracket assemblies, screws, bolts etc.

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IFC, what can IFC do?IFC, what can IFC do?30

NameTitle

NameTitle

NameTitle

NameTitle

NameTitle

NameTitle

NameTitle

NameTitle

NameTitle

Actorspeople, organizations, org. structure, addresses

Costingobjects, cost planning, estimates, budgets

Abcd afrgf aahds jhiuhg reeiuhHfije ewku ijijij jhdfhb

Work Plans and Schedulesinc. nested schedules, resource allocation

O/Nr A1263

2xAbcd £ 263xafrgf £ 421xaahds £6854xjhiu £421

Orderswork orders, change orders, purchase orders

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IFC, what can IFC do?IFC, what can IFC do?

O/Nr A1263

2xAbcd £ 263xafrgf £ 421xaahds £6854xjhiu £421Associated Documents

ClassificationOCCS

Uniclass

External Data 2xAbcd £ 263xafrgf £ 421xaahds £6854xjhiu £421

Connectivityservices, structure, building

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IFC, how are they implemented?IFC, how are they implemented?IFC Express definition from IAI

DevelopToolkit

ProgramInputToolkit

Map-ping

OutputToolkit

Map-ping

Data i IFC format

IFC

ProgramInputToolkit

OutputToolkit

IFC IFC

ProgramIFC IFC

IFC

Express definition

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IFC, how are they implemented?IFC, how are they implemented?

ProgramInputToolkit

Map-ping

Data i IFC format

IFC

Express definition

Input Toolkit

Early binding

Late binding

IFCschema

Map-ping

ProgramMap-ping

Map-ping

IFC schema

OutputToolkit

IFCschema

IFC

IFCIFC

Output Toolkit

IFC schema

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IFC, how are they implemented?IFC, how are they implemented?• Views

IFC Schema

View 1

View 2

View 3

IFC R1.5.1 CAD View

IFC R2.0 Client briefing/space planning Architectural designArchitectural design Quantities take off / cost estimation

Architectural design Thermal load calculations / HVAC system design

HVAC design Architectural design

HVAC design Quantities take off / cost estimatingCAD View

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IFC, how are they implemented?IFC, how are they implemented?• Or via XML

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IFC2IFC2xx – Certification – CertificationView DefinitionsView Definitions

• Coordination view• BREPS• Parametric Geometry• Surface model (= open BREP)• MappedRepresentations• All subtypes of type ifcElement• All subtypes of spacial structure for logical purpose • Parameters• Swept geometry• Shape parameters of the elements• Spaces with geometry• BREP and open shell is always the fall back geometry• GUID• Representation of

building service

IFC2xViewdefinitions

www.iai.fhm.edu

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IFC2IFC2xx – Certification – CertificationView DefinitionsView Definitions

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Bentley Triforma CAD for Architects

DDS ElectroPartner/

HVACPartner

CAD for Electrical and HVAC Engineers

G.E.M. Team Solutions

IFC2x-Interface for Autodesk ADT

IFC-Interface for CAD for Architects

Graphisoft ArchiCAD CAD for Architects

Nemetschek Allplan 2003(Allplan, Allplot, Allready, AllFEM, Allfa)

CAD for Architects, Structural-, Civil- and HVAC- Engineers, Contractors and Facility Managers

BCA Singapore / novaSPRINT

e-Plan Checking Submission checking and control tool

Olof Granlund BSPro/RIUSKA IFC middleware and energy simulation

Solibri Model Checker Design Spell Checking

Vizelia Facility on line

VRML & CAD

IFC-customized VRML viewer and CAD for facility managers

YIT Cove Cost estimation

ACTIVe3D IFC-Tree & Viewer Visualisation

IFC2IFC2xx – Certification – Certification

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Bentley Triforma CAD for Architects

DDS ElectroPartner/

HVACPartner

CAD for Electrical and HVAC Engineers

G.E.M. Team Solutions

IFC2x-Interface for Autodesk ADT

IFC-Interface for CAD for Architects

Graphisoft ArchiCAD CAD for Architects

Nemetschek Allplan 2003(Allplan, Allplot, Allready, AllFEM, Allfa)

CAD for Architects, Structural-, Civil- and HVAC- Engineers, Contractors and Facility Managers

BCA Singapore / novaSPRINT

e-Plan Checking Submission checking and control tool

Olof Granlund BSPro/RIUSKA IFC middleware and energy simulation

Solibri Model Checker Design Spell Checking

Vizelia Facility on line

VRML & CAD

IFC-customized VRML viewer and CAD for facility managers

YIT Cove Cost estimation

ACTIVe3D IFC-Tree & Viewer Visualisation

Wid

espr

ead

field

s of

app

licat

ion

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FZK – Storey Viewer

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IFC 2x2 Electrical modelIFC 2x2 Electrical model

Snapshot from Snapshot from DDS Electro PartnerDDS Electro Partner

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IFC 2x2 Electrical modelIFC 2x2 Electrical model

Snapshot from Snapshot from Nemetchek Allplan FTNemetchek Allplan FT

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IFC 2x2 Electrical modelIFC 2x2 Electrical model

Snapshot from Snapshot from Autodesk ADTAutodesk ADT

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IFC 2x2 Electrical modelIFC 2x2 Electrical model

Snapshot from Snapshot from ArchiCadArchiCad

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Course:Course: IT in the Building ProcessIT in the Building Process

Product models in practice - based on the IFC pilot project Product models in practice - based on the IFC pilot project in connection to DR's new headquarter in Ørestadin connection to DR's new headquarter in Ørestad

Jan Karlshøj

CAD Manager, M.Sc,PhD

Building and Transportation and Tele, RAMBØLL

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Status of an IFC Pilot ProjectStatus of an IFC Pilot Project

• Is it possible to achieve the vision of a total interoperable IT-environment in a construction project by using IFC?– No– But what can be achieved, and what are the alternatives?

BackgroundBackgroundI have been active in IAI since 1996, and chaired the International I have been active in IAI since 1996, and chaired the International Technical Management Committee between July 1999 and July Technical Management Committee between July 1999 and July 20012001

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What have been tested?What have been tested?

• Building– Part of segment 1 of

the new headquarter for the Danish Broad-casting Cooperation

• 50,000 square meters

– Total project• 100,000 square meters• 350 million US $

– Why this project• Carl Bro participates in the project• Scale matters• Interesting project• Too big ?

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What have been tested?What have been tested?

• Software– IFC 2.0

• ArchiCAD

• Visio

• Solibri Model Checker

• RIUSKA

• Excel

• ConViewer

– IFC 1.5.1 • Architectural Desktop

– Tools

• IFC Tree Viewer

• IFC to VRML converter

• Process– Used concurrently with the ordinary process

• Why?– I don’t want to sign legal contracts or to use

IFC in full scale, before we have tested the new process with real data

• Exchange– Only by using IFC

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What have been tested?What have been tested?• Type of objects:

– Wall– Column– Beam– Slab– Window– Door

• Hierarchy– Site– Building– Floor– Space

• Roles• But not

– HVAC, electrical, structural model, requirements, financial information, maintenance etc.

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So, how did the testSo, how did the testss gogo??

• Exchange– Many things worked

• Basic geometry• Types• Some attributes• (Different concepts in different software

product)

– Basic limitations of the software• Only handle bounding box geometry• Only handle 2½D geometry• Only handle spaces of the same storey

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So, how did the testSo, how did the testss gogo??

• Limitations in IFC implementations– Support only specific views– Support only IFC import/export for some components

– Do not support features in IFC like openings in slab (has anybody ever heard about an elevator or a pipe?)

IFC ERROR: Kun åbninger i vægge understøttes på nuværende tidspunkt!IFC ERROR: Kun åbninger i vægge understøttes på nuværende tidspunkt!

IFC ERROR: At the moment only openings in walls are supported!IFC ERROR: At the moment only openings in walls are supported!

IFC ERROR: Kun åbninger i vægge understøttes på nuværende tidspunkt!IFC ERROR: Kun åbninger i vægge understøttes på nuværende tidspunkt!

IFC ERROR: At the moment only openings in walls are supported!IFC ERROR: At the moment only openings in walls are supported!

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So, how did the testSo, how did the testss gogo??• One common building model?

– Walls as one object per layer or one per wall– Some applications prefer ”tall” walls, whereas

others only display walls on the storey they belong to

– Again some applications support voids within a space, others do not

One BuildingOne Building ModelModel

One BuildingOne Building ModelModel

Domain specific Domain specific ModelsModels

Domain specific Domain specific ModelsModels

????

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So, how did the testSo, how did the testss gogo??

• Reaction from software companies– From very good feedback– To very low of feedback

• Looks like the business model is very important in this matter

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So, how did the test So, how did the test gogo??

• Users– Find the people who understand the use of models, instead

of traditional documents like: drawings and specifications– Willing to try a new approach– Be ready to be a beta tester

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ParticipantsParticipants

• Active participants – Engineering College of Copenhagen– School of Architecture in Aarhus– Byggeinformatik– Carl Bro

• Advisory Group– Danish Broadcasting Cooperation– Cowi– Vilhelm Lauritzen, Architects– PLH, Architect

• Ministry of Education financed the work carried out by the College and Architectural school (50,000 US $

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Compared to the “real” projectCompared to the “real” project

Status• 2D CAD-drawings

– in production: demand to use 2D-files

• Few CAD-models– 3D geometry for parts of the model

• Simulations– CFD, Bsim, Radiance, GTStrudl

• But at lot of– Documents (Word and Excel)

• Few databases• Start to use a common Document management system for approved

documents• Visualization

– Cave at the construction site?

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ConclusionConclusion

• IFC goes beyond what is supported by most applications

• IFC can be used, but for a broader acceptance improvements have to be made– Implementation– Guidelines– Training material– (Model Extensions)

• One unified model can not fulfil all the requirements at the moment

• Data Management and legal aspects have to be investigated further

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Architectural ContestArchitectural Contestfor Extension offor Extension of

Munich Main-Train-StationMunich Main-Train-Station

Current Situation:

Junction of:• 2 dead-end train-

stations– 36 Tracks

• 1 tunnel for city train• 2 tunnels for

underground

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Master Screen Floor # -1

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Wireframe-model Total View

New approach of using IFCNew approach of using IFC• Reference-data for architectural contests provided as IFC2x• Level of detailness moderate• Moderate requirements on accuracy• Participants can choose any the IFC-compliant CAD-software • As IFC = standard => support of the idea by authorities

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Section through Tunnels

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Section through track

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Master ScreenFloor # -1

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View from underneatrh new 2. S-Bahn-Stammstrecke new 2. City-Train Main-Track

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Junction new 2. City-Train Main-Track to U1/2

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East-Exit

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Junction U4/5 to U1/2

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IFC-2x ModelIFC-2x ModelImported into Allplan 2003Imported into Allplan 2003

IFC 2x - Model

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Erfaring fra MunchenErfaring fra MunchenRasso Steinmann, NemetschekRasso Steinmann, Nemetschek• The German Rail, the Bavarian Ministry for Economy and

the City of Munich´brought out an invited competition. They entered new ground, as they provided together with the typical documentation also a 3D-model, which contains the existing situation as well as rough proposal for a solution.

• The task is, to design an extension of the Munich Main Train Station,because they are currently digging a second tube for the S-Bahn (=City Train). Munich public transport is about to collapse, and therefore the second tube is really needed.

• Obermeyer Planen + Beraten made the 3D-model with ADT4 and provided the data as an IFC2x-model. The competition participants, who are using Allplan, were able to read this huge model in some 15 minutes without any difficulties, and saved a lot of work, at least some 2 weeks, which they had to invest without this 3D model.

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Industry Foundation ClassesIndustry Foundation Classes

Students are hereby invited to use the IFC Students are hereby invited to use the IFC specifications in their work, and take part in the specifications in their work, and take part in the development, testing and implementation of IFC.development, testing and implementation of IFC.

Thanks for listening !Thanks for listening !

www.iai-forum.dk

www.iai-international.org

http://www.blis-project.org/