Livslang læring AAU 8 2005 Per Christiansson IT in Civil Engineering Aalborg University http:://it.bt.aau.dk [ 1/35]

Den Digitale ByggeprocessIntroduktion

Per Christiansson

Aalborg University http://it.bt.aau.dk

Livslang Læring

Aalborg Universitet 26 august 2005

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INDHOLD

° Presentation of Course° Driving Forces° Competences Needs° Models and model access° Short Building Models history° The DDB Program /Det Digitale Byggeri)° International activities° How can I interact with DDB?° Conclusions

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Der er i øjeblikket megen fokus på digitale objektorienterede modeller i byggebranchen. Branchen er begyndt at omstille sig fra udelukkende at anvende traditionelle 2D-tegninger til at anvende 3D-modeller, hvor data kan genbruges til en række formål i hele byggeprocessen og bygningens levetid.

Aalborg Universitet er stærkt engageret i Erhvervs- og Byggestyrelsens udviklingsprojekt www.detdigitalebyggeri.dk der skal munde ud i, at de statslige bygherrer fra 2007 stille krav om, at alle byggedata ved statslige byggerier håndteres og udveksles digitalt.

Med udgangspunkt i erfaringerne fra ”Det Digitale Byggeri” og nært beslægtede forskningsprojekter vil underviserne give en introduktion til en række centrale problemstillinger, aktuelle værktøjer og udviklingstendenser indenfor den digitale byggeproces og objektorienterede bygningsmodeller.

Fra Kursusbeskrivelse

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Professor Per Christiansson, Bygningsinformatik, http://it.bt.aau.dk

Lektor Erik Kjems, VR Media Lab, http://www.vrmedialab.dk

Lektor Kaj Jørgensen, Inst. For Produktion http://www.iprod.aau.dk

Lektor Kjeld Svidt, Bygningsinformatik, http://it.bt.aau.dk

PhD stud. Mads Carlsen, Bygningsinformatik, http://it.bt.aau.dk

Kursusholdere

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SKEMA

0900-0945 Den Digitale Byggeprocess Introduktion

Per Christiansson

0945 - 10.05 DDB 3D, Kjeld Svidt

10.05-10.30 Kaffe

10.30-11.30 DACaPO, Mads Carlsen

Digitale Fundament, Mads Carlsen

Forts DDB projekter

11.30-12.00 IFC grundlag. Kaj Jørgensen, Kjeld Svidt

12.00-13.00 Frokost

13.00-14.00 IFC anvendelser. Sorthøj (KJ), simuleringer, Solibri, DDS viewer(KS)

14.00-14.15 Kaffe

14.15-15.00 Arbejdsmetoder, processer (KS, EK,..)

15.00-16.00 Afsluttende disk og evaluering

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DRIVING FORCES

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A COMPLEX PROCESS

- the building process is one of the most complex and less formalized applied processes

- Building process actors using different ICT tools, languages and model formalisms with a rich spectrum of user interfaces with different characteristics

- A very cross scientific domain.

- Too little focus on building up it's own ICT competences (the out-sourcing trend increases the risk of loosen company business strategic knowledge).

- Low client understanding that ICT pays back (better early decisions in alternative solutions, higher quality and better documented end products.

The implementation in the building process has been rather slow due to

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- Enhanced clients requirements on the digital building process for increased value on results

- Efficient and effective use of building models

- Improved collaboration and competence utilization

- Better documentation of building projects

- Agreed solutions implemented in the sector’s every day life

POTENTIALS

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Future ICT toolsWireless networks with fibre based backbone

Portable/ubiquitous units (computers, service/communication units)

Many (flat panel/glasses/..) communication units (offices, building sites, homes)

Embedded intelligence (installation components etc.) with Internet connectivity

Peer-to-peer societies/interest-groups/’global’ villages

Family/personal servers (personal storage of information/knowledge within physical reach)

Manifold of parallel personalised/team/project market and service places

XML tagged communication standards and Semantic Web.

All information ('good' and 'bad') accessible through dynamic logical containers

Virtual spaces for communication and learning

Personal global positioning units

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Emerging ICT tools

• XML (Extensible Markup Language)

• Time parameter taken into account in models

• The SEMANTIC WEB

• Virtual Workspaces

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COMPETENCES NEEDS

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COMPETENCES 1/2

There is at present and in the future building industry a great need for persons who can take active part in specification, design, implementation, and evaluation of tomorrows building process support systems.

A broad view and insight into the complex building process together with a broad and in some key areas deep knowledge into existing and coming ICT tools are required in combination.

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COMPETENCES 2/2

Builders must process some ICT competences to be able to formulate needs, requirements, and perform usability evaluation as well as to actively participate in the (creative) design of tomorrows building process ICT tools.

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ICT in Construction Learning Domains

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MODELS AND MODEL ACCESS

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ICT and MODELS of REALITY

ICT (Information and Communication Technology) may be defined as the technologies to support capture, storage, manipulation, communication and delivery of information on different application levels (from macro to micro scale) and in different contexts such as technological, organisational, and cultural.

PRODUCTPROCESS

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From the world to data models implemented in software systems.

WORLD - SYSTEM - MODEL 1/4

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ONTOLOGY- the branch of metaphysics dealing with the nature of being- An explicit formal specification of how to represent the objects, concepts, and other entities that are assumed to exist in some area of interest and the relationships that hold among them.

DICTIONARY- a book that lists the words of a language in alphabetic order and gives their meaning, or that gives equivalent words in different language.

CLASSIFICATION- The action or process of classifying something according to shared qualities or characteristics

DEFINITIONS

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The real world is modeled and accessed from a User Environment, UE, to facilitate experience capture, design, construction, use and re-design of buildings.

World - system - model 2/4

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World - system - model 3/4

The Virtual Building, VB, model is accessed through more or less detailed representations. The VB sub-models may be partly overlapping and also contain redundant information.

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World - system - model 4/4

The complexity and flexibility in organization of the building process leads to large difficulties to build up highly formalized non-redundant models except for certain more standardized buildings and process organization

The favorable degree of optimum formalization of the building process will be different dependent on which actors view is applied.

There might be a negative correlation between effectiveness and flexibility for different representations.

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BUILDING MODELLING HISTORY

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Building Process Oscillations

Christiansson P, 1984, “Integrated Comouter Aided Design. Present and Future Data Structures”. CIB W78 'Integrated Computer Aided Design'. London 5th-7th June 1984. CIB Proceedings Publication 78. (pp. 20-25).

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Building Process Oscillations

Building Process models development have during the latest decades had periodic focus on achieving a highly formalized non-redundant building product model, Virtual Building, VB

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Building Process in Change

ICT tools described into a building process context. We envision greater emphasis in the near future on formalisation of building process/product components especially on the meta data level. Formalised processes will more efficiently handle flexible user environments (UE) and project information containers accommodating partly redundant information.

Christiansson, P, 2003, “Next Generation Knowledge Management Systems for the Construction Industry” Auckland, New Zealand, April 23-25, 2003. CIB W78 Proceedings 'Construction IT Bridging the Distance", ISBN 0-908689-71-3. CIB Publication 284. (494 pages). (pp. 80-87).

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Det Digitale Byggeri Program,

DDB

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In 2002 the Danish national 'Digital Construction - a development program for the whole construction sector' in Danish 'Det Digitale Byggeri', DDB, was started.

See also http://www.detdigitalebyggeri.dk.

As a result the public clients will 2007 state a set of ICT requirements that the enterprises of the construction sector must meet if they wish to tender for public construction projects.

An Advisory Board advises the National Agency for Enterprise and Construction. EBST, on the overall direction and progress of the development project. EBST also forms secretariat for the project, http://www.naec.dk/

DDB 1/2

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Four projects were launched in 2003 within client requirements formulation

(1) Digital tender(2) 3D models(3) Digital handover (Digital aflevering), DACaPo(4) Projectweb

together with a project on (5) Foundation for Digital Construction (classification and standardization issues).

In 2005 the final project was launched namely(6) Best Practice - or in Danish ‘Bedst i Byggeriet’

(7) Digital Projekplanlægning i renoveringssektorn (5 2005)

http://www.detdigitalebyggeri.dk/english/0/10

DDB 2/2

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WHERE DO FIND DDB INFO? At the Detdigitalebyggeri site http://www.detdigitalebyggeri.dk

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Document ClassesSiteBuildingO&MEconomy

PC 3.6.2005

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VERA, http://cic.vtt.fi/vera/english.htm (1997-2002) ITBOF2002, IT Bygg och Fastighet. http://www.itbof.se

IAI, International Alliance for Interoperability,(IFC) http://www.iai-international.org(http://cic.vtt.fi/niai/ Nordic Chapter, http://www.iai-forum.dk/)

CIB W78, International Council for Research and Innovation in Building and Construction, IT in Construction. http://w78.civil.auc.dk (http://it.bt.aau.dk Building Informatics AAU)

INTERNATIONAL ACTIVITIES

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HOW CAN I FOLLOW/INTERACT WITH THE WORK?

The DDB program will end in 2007.

A lot of what is presented at this stage may (and will) be revised both client requirements and classification schemes.

You are encouraged to follow (both push and pull) the discussions and progress on the Learning Net. http://www.detdigitalebyggeri.dk/forum/0/3

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CONCLUSIONS

The Danish DDB program is an important initiative for developing the ICT support in construction.

The public clients are a powerful driving force for change.

The global perspective on business, organizational networks, and competences utilization, due to global communication support, will increase the speed of ICT related changes.

There is a great need for broadening and deepen the competences in areas related to introduction of ICT in organizations and projects. (DDB contributes in that).

DDB should be regarded as one important step in the future change process.

P. Christiansson P. & Carlsen M. (2005) “Virtual Buildings from theory to practice”. Proceedings W78 22nd Conference

on Information Technology in Construction. Edited by R.J. Scherer,P. Katranuschkov, S.-E. Schapke. Dresden July 19-21, 2005. (pp. 171- 175).http://it.bt.aau.dk/it/reports/2005_07_w78_dresden.pdf

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END

Slides athttp://it.bt.aau.dk/it/education