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Kazuo Iwamura Professor, Musashi Institute of Technology Vice-President, Japan Institute of Architects Director of the National Conference Board of SB05Tokyo.

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Presentation on theme: "Kazuo Iwamura Professor, Musashi Institute of Technology Vice-President, Japan Institute of Architects Director of the National Conference Board of SB05Tokyo."— Presentation transcript:

1 Kazuo Iwamura Professor, Musashi Institute of Technology Vice-President, Japan Institute of Architects Director of the National Conference Board of SB05Tokyo The Movement towards Sustainable Buildings in Japan 2005 WGBC Congress in San Francisco, June 1, 2005

2 Japan Sustainable Building Consortium (JSBC) Chair: Prof. Shuzo Murakami Academia Industry Government The JSBC was founded in 2001 and constituted of almost all the building- & construction-related organizations from Academia, Industry and Government under the auspice of the Japanese Ministry of Land, Infrastructure and Transport. Current major assignments are: Development of CASBEE and Preparing and operation of SB05Tokyo

3 Concept & Dissemination by The Japan Sustainable Building Consortium (JSBC) CASBEE Comprehensive Assessment System for Building Environmental Efficiency

4 Task Force for CASBEE Development Japan Sustainable Building Consortium (JSBC) Chair: Prof. Shuzo Murakami Academia Industry Government This task force is constituted of the following committees; 1.Steering Committee 2.Energy 3.Resource productivity 4.Indoor Air Quality 5.Local environment 6.Individual House 7.Urban & district 8.Heat Island 9.GBATool & Case study

5 1. Environmental Action Plan, Jun. 2004 by Ministry of Land, Infrastructure & Transport Dissemination of CASBEE for New & Existing Construction Establishment of CASBEE Accreditation Program Promotion of CASBEE to be introduced by local governments Japanese Government Policy Drive about 2. Green Program of Government Buildings, Jul. 2004 Introduction of CASBEE to the Green Design Guidelines for government buildings CASBEE for District/Region to be developed within two years Eco-rating of urban renewal projects within five years 3. Decision of Urban Renaissance Headquarters, Cabinet Secretariat, Dec. 2004

6 Introduction of CASBEE by Major Local Governments 1. City of Nagoya: April 2004 2. City of Osaka: October 2004 3. City of Yokohama: July 2005 Many other major local governments are now preparing to introduce CASBEE. It is mandatory for building permit applicants to submit the assessed data, part of which is to be disclosed on the website of local government.

7 Basic Idea of CASBEE CASBEE is a comprehensive, but clear, simple & affordable system to assess the building sustainability through both 1. Q :Building Environmental Quality & Performance and 2. L :Building Environmental Loadings, according to the Hypothetical Boundary of the project.

8 What is Hypothetical Boundary? (Neighboring building) Hypothetical Enclosed Space Site Boundary Assessment category L as negative impact outside the boundary Assessment category Q as positive impact inside the boundary Emission of Air-pollutants, Noise, Heat etc. Resource Consumption, Embodied CO 2 Emission, etc. Soil, Water-pollutants etc.

9 1. Eco-Efficiency = 2. Revised definition = 3. BEE in CASBEE = Values of products or services Environmental load unit Beneficial output Input + non-beneficial output Building environmental Quality and performance Building environmental Loadings From Eco-Efficiency To BEE (Building Environmental Efficiency)

10 Basic Idea of CASBEE (contd) Assessment result is finally indicated in terms of BEE = Q / L BEE: Building Environmental Efficiency Q : Building Environmental Quality & Performance L : Building Environmental Loadings

11 1. Basic Idea of CASBEE (contd) 1-4. CASBEE has four primary assessment areas, such as; 1) Energy Efficiency 2) Resource Efficiency 3) Local Environment 4) Indoor Environment to be re-categorized into Q-1~3 & L-1~3 for BEE evaluation

12 Re-categorized into Q (Quality) and L (Loadings) to indicate BEE = Assessment Areas of CASBEE Q1: Indoor environment Q2: Quality of Services Q3: Outdoor environment on site Numerator Areas L1: Energy L2: Resources and materials L3: Off-site environment Denominator Areas BEE BEE Evaluation Assessment Areas of QL Q & L CASBEE Hypothetical Enclosed Space for CASBEE 1. Energy efficiency 2. Resource efficiency 3. Local environment 4. Indoor environment (ca. 80 sub-items in total) Primary Areas

13 2.5 Entire Assessment Result Sheet-1 Project Outline Rader Chart of S Q & S LR Bar Charts of S Q -1~3 Bar Charts of S LR -1~3 Graphical Display of BEE = Q / L Optional Assessment Items

14 Q(S Q ) LR(S LR ) 2.5 Assessment Result Sheet-2Q(S Q ) & LR(S LR ) Display

15 BEE Graphical Display 2-5. BEE Graphical Display Q = 25 × (S Q - 1), L = 25 × (5 - S LR ) S Q : Total score of Q categories, S LR : Total score of L categories 50 100 050100 C B+AS BEE=1.5 BEE=3.0 BEE=0. 5 L Q B- BEE=1.0 (Very sustainable) (Unsustainable) 30 60 BEE=2.0 B-

16 Labeling results of ca. 80 submitted projects according to CASBEE Nagoya Submission mandatory for buildings with floor areas of more than 2000m 2 0 50 100 0 50 100 Q ( Q u a l i t y ) AB + B - C Office School Retail shop Restaurant Hall Hospital Hotel Apartment Factory L (Load) Rank S: excellent A: very good B+: good B-: fairly poor C: poor S

17 CASBEE Family 1-5. CASBEE Family comprises four basic Tools, to be customized according to the design process, including; 1) Tool-0: Pre-design Assessment Tool (to be elaborated) 2) Tool-1: for New Construction (completed in 2002) 3) Tool-2: for Existing Building (completed in 2004) 4) Tool-3: for Renovation (completed in 2005)

18 CABEE Family Tools & Design Process Tools Main Users Pre-designDesignPost-design Planning stage Design stageConstruction stage Operation stage Renewal design stage Tool-0: CASBEE for Pre-design Client Planner Designer Issues only possible to be assessed at planning stage, Including the site selection Tool-1: CASBEE for New Construction Client Designer Engineer Constructor Assessed by themselves Issues to be assessed at preliminary & final design stage Issues to be assessed at construction stage, including design amendments Tool-2: CASBEE for Existing Building Client Designer Engineer Constructor Assessed by Accredited Experts Assessment & labeling after one year operation or more Tool-3: CASBEE for Renovation Client Designer Engineer Assessed by themselves Assessment at renewal stage

19 Manuals of CASBEE Tool-1: CASBEE for New Construction Tool-2: CASBEE for Existing Building

20 Extension of CASBEE Family includes: 1) CASBEE-1 TC : Temporary Construction (completed in 2004) 2) CASBEE-HI: Heat Island (completed in 2005) 3) CASBEE-DR: District & Region (to be completed in 2005) 4) CASBEE-DH: Detached House (to be completed in 2006)

21 Manual of CASBEE Tool-1 TC an extension of CASBEE family Tool-1 TC: CASBEE for Temporary Construction (issued in 2004) The 2005 World Exposition, Aichi, Japan was assessed for the first time.

22 Certification & Accreditation 1. CASBEE Assessment Certification: provided by IBEC 2. CASBEE Assessor Accreditation: associated with the education system also provided by IBEC IBEC: Institute for Built Environment & Energy Conservation

23 http://www.sb05.com 27-29 September 2005 We are looking forward to seeing you all at:


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