IAI Forum Denmark
1) Introduktion til IFC,Jan 12:30 - 13:15
2) Introduktion til det digitale byggeri, Søren kl. 13:15 13:45
Pause kl. 13:45 - 14:00
3) 3D-Visualisering, Jan 14:00 - 14:20
4) Digitalt udbud, Søren kl. 14:20 - 14:40
Pause kl. 14:40 - 15:00
5) Det Digitale Fundament, Søren kl. 15.00 - 15:20
6) Logistik og proces, Søren kl. 15.20 - 15.40
7) Digital aflevering, Jan kl. 15:40 - 16:00
IAI
Purpose of the IAI and IFC
IAI Forum Denmark
International Alliance
for Interoperability
•
Industry Foundation
Classes
•
sets the standard for objectbased data exchange and
sharing of virtual buildings
–
–
–
–
international
industry-driven
cross-discipline
all data for the virtual
building model – object
oriented paradigm
is the data exchange and
sharing standard for building
and construction life cycle
information
– goes beyond CAD
information
– involves engineering and
other applications
– includes whole life-cycle of
buildings
•
Is ISO certified
– ISO/PAS 16739
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IFC supports the sharing of models
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• 2D Drafting
– individual 2D plans – paper space
– no risk control by clash detection
– no calculation of quantities, costs,
thermal loads, etc.
• 2D/3D Model

– visualisation – model space
– clash detection on 3D geometry
– no calculation of quantities, costs,
thermal loads, etc.
• building model (now called

“BIM”)
–
–
–
–
intelligent elements
derivation of 2D plans
clash and risk assessment
calculation of quantities, costs,
thermal loads, etc.
IAI
Goals of building information models
IAI Forum Denmark
Analysis
- thermal performance
- structural analysis
- cost estimation
- collision checking
- design brief verification
- (others)
Construction
- cost control
- building site planning
- work scheduling
- progress control (4D) „like DXF is the exchange format for
- (others)
CAD drawings,
IFC is the exchange format for BIM“.
Design
- architecture
- building services
- electrical engineering
- structural engineering
- urban planning
- (others)
Operation and mgmt
- facility management
- move management
- operation and mgmt
- reconstruction
- (others)
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Integration example with mechanical
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2D Plan
Transformation into
IFC via Converter
Electrical
engineering
Ventilation design
3D model-based CAD +
Facility Management
Collision checking
Heating design
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Challenge and Benefits
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interoperability
 of processes
 of computer systems
• more effort needed at the beginning
– technical – creating the building
information model, attributing it, sharing
it
– cultural – mind change, training, move
all stakeholders along with
• benefits come along the process
– consistent data pool, collision checking
– change management
– take-off quantities, estimate costs
– extraction for the structural analysis
– extraction for the thermal analysis
– construction management
– schedules for component supplies
– take-over into facility management
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Why isn’t DXF/DWG sufficient ?
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• drawing based standards do not exchange the object
information, only geometry and presentation
Material, quantity,
space boundary?
no idea
this is a hole in the wall
a line
a wall
material
concrete
DXF
a recess
a space
what has
this been ?
another line
bureau
IAI
Why is IFC a solution ?
IAI Forum Denmark
• all intelligent object information are exchanged, they can be
reused and interpreted in other applications throughout the
life cycle
this is a hole in the wall
20cm concrete –
u-value is 6
a wall
a wall
a recess
material
concrete
good for
routing
IFC
a recess
a space
bureau
a space
has lighting
requirements
IAI
IAI Forum Denmark
100%
IFC1.0
IFC1.5
IFC2.0
IFC2x
Drafting
Libraries
Facilities Mgmt
Construction Mgmt
Code Checking
Structural Engineering
Building Electrical
Building Services
Architecture
Current IFC – completeness of definitions
80%
60%
40%
20%
0%
IFC2x2
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IFC2x Platform – extensible concept
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ISO/PAS 16739
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Example – structural engineering
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Checking
Engineer
ST-5
Project
Manager
Timber
Extension
HVAC
IFC2x3
Designer*
(Timber)
(Timber)
Construction
Manager
Checking
Engineer
Cost
Calculation
Design
(Steel)
Detailing
(Steel)
Architect
Facility
Manager
other
disciplines
Checking
Engineer
IFC2x
ST-4/2
Steel
Extension
IFC2x2/3
Construction
Manager
ST-4
Analysis
IFC2x2
Cost
Calculation
ST-3
RC
Extension
IFC2x2
Detailing
(RC)
Fabrication
(RC)
Construction
Manager
Cost
Calculation
Structural
Engineer
IAI
Advantages of using IFC building models
– inter-disciplinary
– enables sharing of
knowledge across
organisational boundaries
– takes away risk by reliable
cost, quantity and clash
control for all disciplines
• Data integration
– digital information created
for reuse throughout the
life cycle
– all disciplines can share
consistent project data
– no re-keying of data,
less errors
Information available in life cycle
available information
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• Process integration
fragmented (old)
integrated (BIM)
IAI
Advantages of using IFC building models
cost of changes
•
IT/CAD system integration
– for designer and consultants
• time saving, less costs by avoiding the parallel use of IT
systems
– for building owner
• free bidding for best value, no constraints by IT system
compatibility
– for administration
• can demand non-proprietary data
de
n
ea
rly
de
si
de
gn
ta
ile
d
de
si
gn
co
ns
tru
ct
io
n
op
er
at
io
n
Risk management
– lower construction risks
– lower budget risks
– lower security risks
sig
n
•
in
ce
pt
io
IAI Forum Denmark
Costs = life cycle phase ^ 2
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Data exchange and sharing is essential
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• reuse of BIM data is essential
value creation
– requires many software applications
to share data
– requires data exchange/sharing on
object level
– drawing based (2D) exchange not
sufficient
BIM: value = reuse ^ 2
• use of standards is required
– not a single software vendor can
cover all processes
– data to be shared across proprietary
boundaries
– open, international standards
preferred
number of integrated processes
Source: Volker Thein
value of building information model
= (number of processes using it) ^ 2
IAI
Acceptance and usage
IAI Forum Denmark
• Usage within the Building Industry
– Many national and international projects and pilot projects using
IFC within the design phase
– Examples where IFC is used as database for FM
– Pilot applications where IFC are used as the schema for model
servers to coordinate project planning activities
– And more …
• Usage within the Building Authorities
– Use IFC to exchange within the organization
– Use IFC to communicate with external consultants
– Use IFC to hand-over situation plans
– Use IFC to check building submissions
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IFC, who are participating?
IAI Forum Denmark
•
•
•
•
•
•
Global
AEC/FM professionals
Software companies
Research Institutes
Governmental supported development programs
List: Graphisoft, Autodesk, Bentley, Nemetschek, Microsoft,
GSA, HOK, Kajima, London Underground, LBNL, Stanford ...
600 members
• Sara, Corenet, Construction Research Center,,,
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IFC based exchange
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• IFC
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IFC, what is IAI about ?
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• Vision
To
From
Details
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IFC model
IAI Forum Denmark
• IFC does not standardize data structures in
individual tasks, only the shared information
Equipment Maintenance
Facility
Building
Maintenance
Services
HVAC
Design
Repair and
Renovation
Property
Management
IFC-model
Sale and
rental
activities
Marketing
Structural
Design
Architectural
Design
3D Modelling
Visualisation
IAI
IFC, how is IFC developed?
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IAI
IFC, how is IFC developed?
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IFC, how is IFC developed?
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What IFC2x2 can do today
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Geometry (explicit)
B-rep
CSG
Geometry (Sweep)
volume - extrusion, rotation
areas - extrusion, rotation
Topology
element connectivity,
schematic design
Building Elements
Walls, Openings, Doors
Roofs, Stairs, Ramps, etc.
Relations between
Building Elements
Wall Connections
Holes
Chases
Zones
Spaces and
Spatial Structure
Space
Building Storey
Building
Building Site
Site and Terrain
Model
Site
Site attributes
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What IFC2x2 can do today
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HVAC elements
ducting, piping
chillers, fans, etc
electrical comp.
other building services
electrical elements
fire protection elements
(sprinklers, hose reels, etc.)
sanitary elements
(WC’s, urinals, baths, etc.)
Controls, Instruments
building automation
sensor, actuator, controller,
gauge, meter, etc.
Grid
linear, circular grids
positioning to grid
Systems
piping, ducting,
cable, structural
Lighting
fittings, rendering,
photo-accurate
lighting
Drafting
Furniture
furniture items
system furniture
2D presentations in
model space,
dimensioning,
colors, texture maps
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What IFC2x2 can do today
IAI Forum Denmark
Actors
Time Series
time related events
energy simulation
People
Organisations
Addresses
Constraints
rules, specifications,
requirements
trigger conditions
AA
aa
bb
BB
aa
bb
structural members,
boundary conditions,
connections, loads, etc.
members, profiles,
rebars, properties,
joints, features, surface
schedules
resource allocation
Costing
Structural analysis:
Structural Elements
Work plans
Cost of objects
Cost planning
Cost estimates
2xAbcd
£ 26
3xafrgf
£ 42
External Data
classification,
libraries,
documentation
IAI
solutions planned: IFC2x3 May 2005
IAI Forum Denmark
Geographic Information Systems
define the link to GIS information
geo-referencing of building models
situation maps and land-use plans
steel and timber frame detailing
steel detailing (joints, fasteners, etc.)
timber frame profiles, wood properties
link to CIS/2
bridge structures
pylons, suspended structures
bridge sections, sections and reference lines
access roads, etc.
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IFC, how are they implemented?
IAI Forum Denmark
IFC Express
definition from
IAI
IFC
Input
Toolkit
IFC
Express definition
Develop
Toolkit
Mapping
Input
Toolkit
IFC
Data i IFC format
Program
Mapping
Program
Output
Toolkit
Program
Output
Toolkit
IFC
IFC
IFC
IAI
IFC, how are they implemented?
IAI Forum Denmark
Express definition
Data i IFC format
Early binding
IFC
Input IFC
Toolkit schema
Mapping
Program
Mapping
Output IFC
Toolkit schema
IFC
Late binding
IFC
IFC schema
Input Toolkit
Mapping
Program
Mapping
IFC schema
IFC
Output Toolkit
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IFC, how are they implemented?
IAI Forum Denmark
• Views
View 1
View 2
IFC Schema
View 3
IFC R1.5.1
CAD View
IFC R2.0
Client briefing/space planning  Architectural design
Architectural design  Quantities take off / cost
estimation
Architectural design  Thermal load calculations /
HVAC system design
HVAC design   Architectural design
HVAC design  Quantities take off / cost estimating
CAD View
IAI
IFC, how are they implemented?
IAI Forum Denmark
• Express or via XML
real world
Stage
IFC 2x
EXPRESS
Stage
2
ifcXML
optimized
1
semantic model
STEP
Toolbox
aecXML
ifcXML
bcXML
implementation
aecXML
bcXML
files
IFC STEP File
IFC XML file
data exchange (files)
IAI
IFC2x – Certification
View Definitions
IAI Forum Denmark
• Coordination view
•
•
•
•
•
•
•
•
•
•
•
•
•
BREPS
IFC2x
Parametric Geometry
Viewdefinitions
Surface model (= open BREP)
www.iai.fhm.edu
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
IAI
IFC2x – Certification
View Definitions
IAI Forum Denmark
IAI
IFC2x – Certification
IAI Forum Denmark
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
CAD for Architects,
Structural-, Civil- and HVACEngineers, Contractors and
Facility Managers
(Allplan, Allplot,
Allready, AllFEM, Allfa)
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
IAI
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
CAD for Architects,
Structural-, Civil- and HVACEngineers, Contractors and
Facility Managers
(Allplan, Allplot,
Allready, AllFEM, Allfa)
BCA
AEC-CAD Market Share covered by IFC2x
Singapore /
novaSPRINT
e-Plan Checking
BSPro/RIUSKA
Olof Granlund
IFC2x certified
Others
Widespread fields of application
IAI Forum Denmark
Bentley
Submission checking and
control tool
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
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FZK – Storey Viewer
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IFC 2x2 Electrical model
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Snapshot from DDS Electro Partner
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IFC 2x2 Electrical model
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Snapshot from Nemetchek Allplan FT
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IFC 2x2 Electrical model
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Snapshot from Autodesk ADT
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IFC 2x2 Electrical model
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Snapshot from ArchiCad
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Architectural Contest
for Extension of
Munich Main-Train-Station
IAI Forum Denmark
Current Situation:
Junction of:
• 2 dead-end trainstations
– 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
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New 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
IAI
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Section through Tunnels
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Section through track
IAI
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Master Screen
Floor # -1
IAI
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View from underneatrh new 2. S-Bahn-Stammstrecke
new 2. City-Train Main-Track
IAI
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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
IAI
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IFC 2x -Model
Model
IFC-2x
Imported into Allplan 2003
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Erfaring fra Munchen
Rasso Steinmann, Nemetschek
IAI Forum Denmark
• 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 Classes
IAI Forum Denmark
Students are hereby invited to use the IFC
specifications in their work, and take part in the
development, testing and implementation of IFC.
Thanks for listening !
www.iai-forum.dk
www.iai-international.org
http://www.blis-project.org/
IAI