GBC '98 - 2002 Process Overview
Table of content
 Summary  Benefits to the Industry
 The Conference - September 2002  The Performance Assessment Process
 Goals and Objectives  GBC2k GBTool Overview
 International Framework Committee .
GBC 2002 Summary

Green Building Challenge is an international collaborative effort to develop a building environmental assessment tool that exposes and addresses controversial aspects of building performance and from which the participating countries can selectively draw ideas to either incorporate into or modify their own tools.
Green Building Challenge 2002 was a continuation of the GBC '98 - 2000 process and a multi-year period of review, modification and testing of the GBC Assessment Framework and Green Building Tool (GBTool) - the operational software for the assessment framework. This round of the GBC process culminated in the presentation of the assessed buildings at the Sustainable Building 2002 Conference (SB 2002) held in Oslo, Norway in September 2002.

kula_zie.gif - 326 Bytes   GBC 2000- 2002 Overview in printable format.  kula_zie.gif - 326 Bytes

kula_zie.gif - 326 BytesReview of GBTool and Analysis of GBC 2002 Case Study Projects  kula_zie.gif - 326 Bytes

kula_zie.gif - 326 Bytes  GBC 2005 Proposed Strategy  kula_zie.gif - 326 Bytes


The SB / GBC 2002 Conference

The international conference SB 2002 which included GBC2002 presented a unique opportunity for participants to learn details about some of the world's best sustainable buildings.

green  Green Building Performance Assessments
The presentation and analysis of the buildings that have undergone in-depth assessments was a main feature of the GBC 2002 part of the conference.

green  Analysis of the assessment framework
The assessment framework  represents a major milestone in the development of our understanding of building performance issues. The framework has been analyzed, scrutinized and its features discussed by those who developed it and those who had their projects assessed.

green  Technical papers
Technical papers were presesented with a wide range of issues of importance to green building and its assessment,including performance target-setting, regional and climatic considerations,technologies and the characteristics of current performance assessment systems.

green  Poster projects
Additional green building projects were exhibited in poster sessions.


The Performance Assessment Process

The assessment framework having been used to assess the selected projects was developed by a team of international experts under the direction of an International Framework Committee. 

The core assessment framework has been adapted by national teams to the conditions of their own countries and regions.  The regionally adapted systems reflect issues such as regional energy and environmental priorities, cost-effectiveness and urban planning issues.

Buildings assessed have been selected by national teams to represent "best practices", and conform to key criteria of the assessment framework. National teams supervised the information gathering process about these buildings, including a detailed characterization of the building, a description of the process followed in its design, construction and operation and planned building operation procedures. The teams have undertaken energy simulations using accepted computer programs like DOE-2 or EE4 (in Canada).
 A central quality control mechanism ensured that national teams use relatively consistent assumptions.
The heart of the process is the detailed assessment of 2 or more "best practice" buildings from each participating country. The results were scored, weighted and graphically represented, all assisted by GBTool - a program developed especially for the purpose.


Goals and Objectives

The three general goals for the Green Building Challenge process were:

  • To advance the state-of-the-art in building environmental performance assessment methodologies.
  • To maintain a watching brief on sustainability issues to ascertain their relevance to "green" building in general, and to the content and structuring of building environmental assessment methods in particular.
  • Sponsor conferences that promote exchange between the building environmental research community and building practitioners and showcase the performance assessments of environmentally progressive buildings.

These goals reflect the acknowledged success of the GBC process in having significantly increased the understanding of building environmental assessment through international collaboration. In addition to the above general goals, two specific objectives of GBC 2002 process were:

  • To develop an internationally accepted generic framework that can be used to compare existing building environmental assessment methods and used by others to produce regionally based industry systems.
  • To expand the scope of the GBC Assessment Framework from green building to include environmental sustainability issues and to facilitate international comparisons of the environmental performance of buildings.
Other objectives:
green To test new methods of assessing building performance
green To showcase "best-practice" examples of green buildings around the world
green To document the successful elements of individual green buildings
green To offer direction to participating countries in the development of regionally-sensitive assessment models
green To promote an international exchange of information,  ideas and green building technologies


Members of the current International Framework Committee

Silvia de Schiller Argentina (observer)
Susanne Geissler Austria
Rein Jaaniste Australia
Vanessa Gomes Brazil
Alex Zimmerman Canada
Norman Goijberg Chile
Ilari Aho Finland
Philippe Duchene-Marullaz France
Sylviane Nibel France
Günter Löhnert Germany
Dimitrios Bikas Greece
Stephen Lau Hong Kong
Andrea Moro Italy
Tatsuo Oka Japan
Nori Yokoo Japan
Lee Pil-Jae Korea
S.D. Park Korea
Ronald Rovers Netherlands
Chiel Boonstra Netherlands
Sverre Fossdal Norway
Aleksander Panek Poland
J.L. Grobler South Africa
Neil Oliver South Africa
Javier Serra Spain
Mauritz Glaumann Sweden
Gail Lindsey U.S.A.
Drury Crawley U.S.A.
Phil Jones Wales
Ray Cole
Nils Larsson