Transcript To problemstillinger som enda er uavklart

Use of Building Product Models and
Reference Data Libraries for project and
quality management.
CONSTRUCTION PROJECT MANAGEMENT SYSTEMS:
THE CHALLENGE OF INTEGRATION
São Paulo 25-28 March 2003
Lars Bjørkhaug
Norwegian Building Research Institute
18.07.2015
1
Introduction to IFC and IFD
 IFC - International Foundation Classes
 IFC is developed and maintained by IAI (International Alliance for Interoperability)
 IFC is a complete EXPRESS product model of a building project
 IAI has 9 chapters each with members from several countries:
North American, German Speaking, Nordic, French, Singaporean, Korean, Australasian, Japanese
 IFC is supported by most leading building software vendors:
 IFD - International Framework for Dictionaries
 IFD is developed and maintained by ISO/TC 59/SC 13/WG 6
 IFD is an EXPRESS model standardised in ISO 12006-3
 Several countries has started building dictionaries based on IFD
BARBi
LexiCon
SDC
NBR
…
 IFC and IFD is currently being harmonised through the work of XM-7
More information at: http://cic.vtt.fi/niai/technical/ifc_3/R3_projects.html
Lars Bjørkhaug, Norwegian Building Research Institute
BARBi the Norwegian IFD library
 BARBi is a conceptual context independent reference library
BARBi
describes objects independent of usage and time,
regardless of how they are named or classified.
NS 3451 ”Building parts”
NS 3420 ”Building specifications”
R.6 Doors, gates, sliding walls, trapdoors
2 Building
2.3 Outer walls
R.6.1 Doors
”Building product catalogue”
15 Wooden products and interior
15/10 Bathroom panel
2.3.1 Primary construction
R.6.1.1 Inner doors
2.3.3 Windows, doors, etc
R.6.1.2 Outer doors
15/20/000 Inner doors
2.3.3.x Outer doors
R.6.1.3 Entrance doors
15/20/100 Outer doors
2.3.3.y Outer windows
R.6.1.4 Sliding doors
15/20/230 Sliding doors
Outer cladding and surface
2.4 Inner walls
R.6.2 Industry gates
R.6.3 ...
15/20 Doors
15/20/420 Entrance doors
15/24 Windows
2.4.1 Primary construction
2.4.3 Windows, doors, etc
2.4.3.x Inner doors
2.4.3.y Inner windows
2.4.5 Inner cladding and surface
building, outer wall, inner wall, door, outer
door, inner door, sliding door, cladding,
outer cladding, inner cladding, surface,
inner surface, outer surface, inner
surface, artefact, interior...
Lars Bjørkhaug, Norwegian Building Research Institute
BARBi the Norwegian IFD library
 BARBi is object oriented
BARBi describes an concept by relating it to other concepts
Any concept in BARBi exist only once
Concepts can be referred to, though globally unique IDs
inner door
is a type of
door
fire door
is a type of
fire escape route
door
consists_of
door
is part of
door leaf
door frame
doorway
horizontal light-opening for door
door
can be
building product
is a type of
is part of
door sill
consists_of
is a type of
opening in wall
relates to
inner door
outer door
sliding door
rotating door
strongroom door
escape route
consists of
with of escape route
sliding door leaf
sliding door frame
Lars Bjørkhaug, Norwegian Building Research Institute
BARBi the Norwegian IFD library
 BARBi is multi lingual according to the rules of IFD
 Concepts are classified as objects, activities, properties and units, not
as verbs, substantives, adjectives, etc.
dør
door
dørblad
door
bjelke
door-set
 A dictionary based mapping does
not necessarily refer to the
identical concept.
beam
 An concept can have multiple
truss
names on the same language
balk
ligger
pump
Functional object
a pump as a functional object
Physical object
a physical pump on a plant
Activity or process
to pump
 A name can refer to multiple
concepts
Lars Bjørkhaug, Norwegian Building Research Institute
What can BARBi do for the building industry?
Give precise and exact definitions of objects, properties and
relationships.
I.e. What do we mean by ”width” and ”height” for a
door?
height
width

depends on who is using the concept, and in
which context it is used.

depends on when, in an object’s lifetime, the
concept is used.

depends on which classification we refer to.
Lars Bjørkhaug, Norwegian Building Research Institute
What can BARBi do for the building industry?
Give precise and exact definitions of objects, properties and
relationships.
in BARBi you will find:
maximum horizontal door opening
minimum horizontal door opening
horizontal door module with
outside frame width
frame thickness for door top frame
door sill thickness
horizontal door opening
with door in most
unfavourable position
vertical light opening
maximum vertical door opening
minimum vertical door opening
vertical module door height
outside frame height
inside frame width
frame thickness
for side frame

all known properties for objects with explicit
names

several types of relationships between objects,
properties, activities, units and references.

references to known standards and classification
systems

a global unique ID and a set of languagedependent names and definitions, for every
concept in the library
Lars Bjørkhaug, Norwegian Building Research Institute
IFC and IFD for exchange of data
IFD reference data
IFC propertyset
Information exchange on
IFC format
Self defined data
IFC propertyset
+ IFC ensure that data is exchanged as objects and object properties and
not as lines and layers…
-
IFC can only standardise to a level of detail that is internationally agreed
about…
+ IFC can also exchange self defined data through IFC property-set…
- The properties within an IFC property-set are not always standardised
- IFC properties are not context independent…
+ IFC and IFD opens for 100% standardisation of exchanged data
Lars Bjørkhaug, Norwegian Building Research Institute
From ad-hock, fragmented information to shared standardised data
Laws and regulations
CAD software
-Building regulations
-Building specifications
-Drawings, calculations
-Architect, engineer,…
VRML
Knowledge databases
-Visualisation, 3D models
-Best practise knowledge
-Own practice
Simulations
-Comfort
-Ventilation, heating
-Life cycle cost
-Light, sound
-Insulation
-Fire, usage
-Environment
-Life time predictions
Briefing
-Functional req.
-Estimates
-Conditions
-Requirements
IFC + IFD
product
model
Demolition, refurbishment
-Rebuild
-Demolition
-Restoration
Facility management
-Letting, sale, operations
-Maintenance
-Guaranties
Specifications
Construction management
-Scheduling
-Logistics, 4D
Illustrations: Norwegian Building
Research Institute, Olof Granlund,
NBLN University of California, Stanford
University
-Specification sheets
-Classification standards
-Estimates, accounting
Procurement
-Product databases
-Price databases
Lars Bjørkhaug, Norwegian Building Research Institute
Who will be using IFC and IFD?
 Research centres, authorities and suppliers of best knowledge:
 Generic object databases with links to
specification sheets and knowledge
databases (best solutions)
IFC
 Predefined objects to drag-and-drop into CAD
or specification software, etc.
IFC
 Automatic control of selected solutions
against best practise and regulations.
 Automatic control towards company
knowledge
 Centralised calculations of environmental impact
IFC
 Calculations of life cycle cost and lifetime
prediction
 Health and safety evaluation and
recommendations
Lars Bjørkhaug, Norwegian Building Research Institute
Who will be using IFC and IFD?
 Product model servers (project hotels, project servers)
 Possibility to exchange and update single objects. No
longer need to send the whole drawing layer.
 History of changes and reason for changes.
Possibilities to set access rights for particular actors.
IFC + IFD
product model
 One project can be visualised in multiple ways; as
drawings, specifications, calculation, estimates, etc.
 Functional demands, technical solutions and product
information stored on the same object.
 Construction companies, architects and engineers
 Extracts of essential information from product models;
escape routes, room functions, load bearing walls
 Reuse of information already typed
IFC + IFD
product model
Sov
Sov
 Information to and from building authorities
Sov
Sov
 Materials and product orders
 Generation of checklists
 Facility management information
 Guaranties and maintenance information
Lars Bjørkhaug, Norwegian Building Research Institute
Further reading:
 For information about IFC and IAI visit: www.iai-international.org
 Documents and technical papers
 Calendar, links, International chapters
 Demos
 For information about IFD and BARBi visit: www.barbi.no
 Online version of the Norwegian IFD library
 Papers and documentation about the project
 Tools and demos
Lars Bjørkhaug, Norwegian Building Research Institute