GBC '98 - 2005 Process Overview
Table of content
 Summary  Benefits of the GBC to the Industry
 The Conferences - September 2004 and 2005  The Performance Assessment Process
 Goals and Objectives  GBtool 2000 - overview of the idea
 International Framework Committee . GBTool 2005 Overview   new
GBC 2005 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 2005 / SB05 is a continuation of the GBC '98 - 2002 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 will culminate in the presentation of the assessed buildings at the Sustainable Building 05 Conference (SB'05) held in Tokyo , Japan in September 2005 while intermediate stages and the preparation phase will be discussed at the five regional conferences SB'04

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

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

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


The GBC Performance Assessment Process

The assessment framework and software used to assess the selected projects was developed by a team of international experts under the direction of an International Framework Committee.  The process began in 1996 and will continue until at least the SB05 Tokyo conference.

All tools used in the GBC'02 process are accessible at the Downloading area.  (use Back button to return here or, if you downoladed GBTool, return first to iiSBE Home)
The current GBC'05 version of GBTool in Microsoft Excel format (under the working name of GBTool-Sep29) is available with the integrated manual at the Downloading area (once you are there after registering).

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.

Each national GBC team selects case study buildings to be assessed according to the GBC framework, and to be presented at the SB-series of international conferences. Buildings assessed are selected by national teams to represent at least “Good Practice” and to provide a good learning experience for the respective national industries. National teams gather information about these buildings, including a detailed physical characterization, a description of the process followed in its design, construction and operation and planned building operation procedures. The teams undertake energy simulations using accepted computer programs like DOE-2 or EE4 (in Canada ).


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 and GBC 2005 processes are:

  • 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)
Peter Graham Australia
Susanne Geissler Austria
Vanessa Gomes Brazil
Robert Bach Canada
Norman Goijberg Chile
Ilari Aho Finland
Philippe Duchene-Marullaz France
Sylviane Nibel France
Dimitrios Bikas Greece
Guenter Loehnert Germany
Stephen Lau Hong Kong
Yehuda Olander Israel
Andrea Moro Italy
Tatsuo Oka Japan
S.D. Park Korea
Cesar Ulises Trevino Mexico
Ronald Rovers Netherlands
Aleksander Panek Poland
Javier Serra Spain
Mauritz.Glaumann Sweden
Gail Lindsey U.S.A.
Nils Larsson