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YIT CORPORATION 05.03.2002

Utilising a Product Model in the Construction Process

Case HUT600

Susanne Backas, YIT

YIT CORPORATION

YIT provides total service for construction and industry.

DESIGN ANDIMPLEMENTATION

MAINTENANCE AND OPERATION

Properties

Industry

Infrastructure

Net sales in 2001:EUR 1.6 billion

Personnel:about 10,000

Over 130 regional officesin Finland and 20 abroad+ 70 regional offices of Calor

in Sweden

YIT in brief

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YIT CORPORATION

HUT 600 project

CLIENTS

Owner: Senate Properties

End-Users: Helsinki University of Technology

PROJECT TEAM

Architect: Arkkitehtitoimisto A-Konsultit Oy

Structural Engineer: Insinööritoimisto Magnus Malmberg Oy

Building Services Consultants & Designers: Insinööritoimisto Olof Granlund Oy

Construction Manager & General Contractor: YIT Concept Projektinjohtopalvelut Oy

RESEARCH PARTNERS

Research Financing Agency: TEKES ( National Technology Agency in Finland )

Research Collaborator: CIFE ( Center for Integrated Facility Engineering ), Stanford University

YIT CORPORATION

HUT 600 project

• Extension of HUT main building by Alvar Aalto in Otaniemi, Finland

• Auditorium for 600 people, technical facilities, renovation of foyer, handicap accesibility improvements

• Project started in October 2000

• Construction started in May 2001, finished in February 2002

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YIT CORPORATION

Research project: PM 4D

GOALS:

• Provide decision support for client and designers in early briefing phase

• Demonstrate benefits of product model approach from client briefing to design to construction to facility management

• Share recommendations

• Prioritize agenda for further R&D

• Technology tested:

- product model approach in HVAC simulation, cost estimation, construction planning

- IFC product model exchange

- project databank

- visualisation

- 4D approach

YIT CORPORATION

The product model and YIT

TENDERING

Supply Management

DESIGN TOOLS

COVE

Quantity management

StandardResources

STANDARD SOLUTIONS

Project db

4D

Scheduling

TIMING

COMPANY KNOW-HOW

ArchiCAD / IFC model STANDARD

SOLUTIONS

QUANTITIES& LOCATIONS

GEOMETRY,SOLUTIONS

PROCUREMENT NEEDS

Best Practice

Knowledge

COST MODELS

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YIT CORPORATION

Solibri Model Checker- Checking reliability of model

- Key figures

- Solutions used in the model vs Standard resources solutions

- Visualising results through simple 3D interface

Model Analysis

YIT CORPORATION

Model Analysis

Example:Checking conflicts in schedule

Colliding tasks!

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YIT CORPORATION

4D simulation

- Management of complicated schedules

- Building site organisation

- Visual check of collisions in the schedule

YIT CORPORATION

4D simulation

Solibri, Inc.

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YIT CORPORATION

Experiences from PM4D / HUT600

Benefits

- Alternative design solutions can be analysed in early design phase- Decision support for clients, designers

In the HUT600 case, the design team produced models of three different architectural solutions and two building system solutions in the early design phase, which were analysed by Olof Granlund ( life cycle simulation ) and YIT ( cost estimation )

- Cost estimates in the early phases can be made more accurate- Organising of material deliveries and subcontracts can be made sooner- The contractor can provide efficient input in the early project phase- Data sharing through IFC/product model

Instead of a variety of conventional data transfer methods( faxes, e-mail, 2D CAD documents, etc.. )

YIT CORPORATION

Experiences from PM4D / HUT600

Challenges

• IFC file size• Revision management• Different software-specific model requirements• Lack of IFC-write

• Lack of IFC support ( earthworks, etc. )• Management of non-3D data

_ Required multiple amount of formats

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YIT CORPORATION

Experiences from PM4D / HUT600

Conclusion

• Main benefit in transfer of product model geometry • Benefits >Challenges, experiences are very promising• Need for further development efforts to provide means for use of

product model in production ( pilot projects, etc.. )

YIT CORPORATION

Thank you for your attention!

Susanne Backas

susanne.backas@yit.fi