casbee final presentation 2070 batch

CASBEE

Presented by:

Binisha Gurung 70011

Krisha Shrestha 70018

Pooja Bazimaya 70025

Pooja Thapa 70026

Prabal Dahal 70027

Green Building Rating Systems

Department of Architecture

Kathmandu Engineering College

December 20171

Supervisors:

Dr. Sushil B. Bajracharya

Lec. Anjana Shrestha Vaidya

Green Building Design

AR 825 02

Green Building Design: AR 825 02 December 2017

Green Building Rating System: CASBEE

1. Introductioni. What is green building?ii. CASBEE: Backgroundiii. Beginning and history of developmentiv. Types of CASBEEv. CASBEE for specific purposevi. Statistics of Buildings Assessed

2. Rating system breakdown

3. Scoring System

4. CASBEE Rating System

5. CASE STUDY: OBAYASHI TECHNICAL RESEARCH INSTITUTE i. Introductionii. Rating statusiii. Featuresiv. Graphs and Analysis

6. Comparison with other systems

7. Conclusion

8. Recommendation

9. References

2

CONTENTS



GREEN BUILDING

• Green, or sustainable, building is the practice of creating and using healthier and more resource-efficient models of construction, renovation, operation, maintenance and demolition. (EPA, USA)

• Design is itself an important factor to consider while talking about green building.

3Source: myfloridagreenbuilding.info


Green Building Rating System: CASBEE 4

GREEN BUILDING RATING SYSTEM

Various green

rating systems

are established

globally to

evaluate the

sustainability of

construction

projects. Their

categories and

criteria have

been under

constant updates

to follow the

sustainable trend

of building

development.

(Science Direct)



• Comprehensive Assessment System for Built Environment Efficiency (CASBEE) is a method for evaluating and rating the environmental performance of buildings and the built environment.

• CASBEE was developed by a research committee established in 2001 through the collaboration of academia, industryand national and local governments, which established the Japan Sustainable Building Consortium (JSBC) under the auspice of the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). (IBEC)

5

CASBEE: BACKGROUND



WHY CASBEE?

Enhance the quality of people's

lives

Reduce the life-cycle resource use

Reduce environmental loads

associated with the built

environment, from a single home to

a whole city.

CASBEE: BACKGROUND



BEGINNING AND HISTORY OF DEVELOPMENT:

• There has been a growing movement towards sustainable construction since the second half of the 1980s, leading to the development of various methods for evaluating the environmental performance of buildings.

7

(Athulya Aby, https://www.slideshare.net/athulyaaby/casbee-certification)

https://www.slideshare.net/athulyaaby?utm_campaign=profiletracking&utm_medium=sssite&utm_source=ssslideview



CASBEE

• CASBEE was developed by a research committee established in 2001, as part of a joint industrial/ government/ academic project.

• It was developed out of a three-phase process to consider sustainability issues to Japan and Asia.• The first phase: Improving indoor air quality with little

regards to exterior condition or building development• The second phase: Grew out of concerns over air

pollution in Tokyo in the 1960s• The third phase: Looking at the broad picture, the

impact of building on the interior and exterior environment. (CTBUH.)

8



BEGINNING OF CASBEE

CASBEE was developed according to the following policies:

• The system should be structured to award high assessments to superior buildings, thereby enhancing incentives to designers and others.

• The assessment system should be as simple as possible.

• The system should be applicable to buildings in a wide range of building types.

• The system should take into consideration issues and problems peculiar to Japan and Asia.

9

(Athulya Aby, https://www.slideshare.net/athulyaaby/casbee-certification)

https://www.slideshare.net/athulyaaby?utm_campaign=profiletracking&utm_medium=sssite&utm_source=ssslideview



TYPES OF CASBEE

• CASBEE is divided into four assessment tools:

• The first assessment tool: CASBEE for Pre-design, was completed in 2002

• The second assessment tool: CASBEE for New Construction in July 2003

• The third assessment tool: CASBEE for Existing Buildings in July 2004

• The fourth assessment tool: CASBEE for Renovation in July 2005. (JSBC), J. G. (2014).

10



BUILDING LIFECYCLE

11

Figure: The cyclical process of building design (JSBC), J. G. (2014).



BUILDING LIFECYCLE AND ASSESSMENT TOOLS

12

(JSBC), J. G. (2014).



PRESENT ASSESSMENT TOOLS1. CASBEE for Buildings (New Construction) 2014 edition*

2. CASBEE for Buildings (Existing Buildings) 2014 edition

3. CASBEE for Buildings (Renovation) 2014 edition

4. CASBEE for Market Promotion (2014 edition)*

5. CASBEE for Commercial Interiors 2014 edition

6. CASBEE for Temporary Construction 2007 edition

7. CASBEE for Heat Island (2010 edition)

8. CASBEE for Urban Development (2014 edition)*

9. CASBEE for Cities (2013 edition)*

10. CASBEE for Cities - Pilot version for worldwide use (2015 edition)*

11. CASBEE for Detached Houses (New Construction) 2014 edition

12. The former tool, CASBEE for Homes (Detached Houses) 2007 edition*

13. CASBEE for Dwelling Unit (New Construction) 2014 edition

14. CASBEE Health Checklist

15. CASBEE for Housing Renovation Checklist

16. CASBEE Community Health Checklist

13

(Conservation (IBEC), J. S.)



CASBEE FOR SPECIFIC PURPOSE

14

Application Name

For Detached HousesCASBEE for Detached Houses

(for New Construction, for Existing Building)

For Temporary Construction CASBEE for Temporary Construction

Brief versions CASBEE for New Construction (Brief Version), for Existing

Buildings (Brief version), for Renovation (Brief version)

CASBEE for Urban Development (Brief version)

Local government versions CASBEE-Nagoya, CASBEE-Osaka, CASBEE-Yokohama etc.

For Heat Island effect CASBEE for Heat Island

For Urban Development CASBEE for Urban Development

For Cities CASBEE for Cities

For Market Promotion CASBEE for Market Promotion(JSBC), J. G. (2014).



• As of March 2015, the number of assessed buildings exceeds 16,000.

• Since the system started in 2004, about 500 buildings in total throughout Japan have so far been certified (as of March 2016.)

15

STATISTICS OF BUILDINGS ASSESSED

Figs: Cumulative number of CASBEE certified buildings and Accredited Professionals

(source: CASBEE Brochure 2016)

UD: URBAN DEVELOPMENTMP: MARKET PROMOTIONDH: DETACHED HOUSESBD: BUILDING DESIGN



RATING SYSTEM BREAKDOWN

The overall scoring breakdown for CASBEE is broken down to the following categories:

16

ENERGY THERMAL COMFORT

RESOURCES & MATERIALS

NOISE & ACOUSTICS

OFFSITE ENVIRONMENT

LIGHTING & ILLUMINATION

AIR QUALITY

FLEXIBILITY & ADAPTIBILITY

BIOTOPE CONSERVATION

TOWNSCAPE& LANDSCAPE



RATING SYSTEM BREAKDOWN

Due to the complex nature of CASBEE, the percentage that each category contributes to the overall score, varies by project.

17



SCORING SYSTEM

18

ECO- EFFICIENCY:

• "Value of products and services per unit environmental load.“

• Integrated assessment of two factors: inside and outsidethe building site.

• In terms of input and output quantities,

"(beneficial output)/ (input + non-beneficial output)."



ECO- EFFICIENCY:Built Environment Quality

Q (Quality)

L (Load)

Built Environment Load

= BEE

SCORING SYSTEM



Built Environment Efficiency (BEE):

• Ratio of environmental quality and performance to environmental loading

BEE = Q(Building environmental quality and performance

L(Building environmental loadings

SCORING SYSTEM



Inside the boundary

as positive impact

evaluated by

Q: Built Environment Quality

Outside the boundary

as negative impact

evaluated by

L: Built Environment Load

Resource consumption

embodied CO2 emission etc.

Emission of air

pollutants, noise, heat

etc.

Soil, water pollutants

etc.

SCORING SYSTEM



If Q: Built Environment

Quality= 34 &

L: Built Environment

Load= 6.0 then,

BEE=𝑸/𝑳 =34/6.0 =1.7

Fig: BEE Ranking Chart

SCORING SYSTEM



CASBEE RATING SYSTEM

23

Q

L

BEE

value

Rating Assessment

3.0+ if

Q>50

S Excellent

1.5-3.0+ if

Q<50

A Very good

1.0-1.5 B+ Good

0.5-1.0 B Fairly poor

<0.5 C Poor



CASE STUDY OF OBAYASHI TECHNICAL RESEARCH INSTITUE

24

Project name

Type

(new/renovation)

Designer(s)

Owner(s)

Developer(s)

Year of construction

Address, Country

Building life span

Tecno-Station, Obayashi Corporation

Technical Research Institute

New

Obayashi Corporation, Design Division

Obayashi Corporation

Obayashi Corporation

2010

4-640 Shimokiyoto Kiyose-shi Tokyo, Japan

50 years

Figure: Main Building

Source: Sustainable Building Challenge 2011.



Project gross area above

ground [m²]

Project gross area (including

below ground) [m²]

Site area [m²]

Stories (above grade)

Occupancy type(s)

Typical building population

Number of operating hours /

year

Assessment phase

Assessment tool

Rating

25

5535,38

8255

69401

3

Office

200

2596

New

CASBEE 2008 v. 3.4

Class S BEE=7.6

Figure: Main Building

Source: Sustainable Building Challenge 2011.



Figure: Main Building- Techno Station

Figure: Master Plan

• It is the core facility of theInstitute of Technology

• Designed with state-of-the-arttechnologies developed byObayashi Corporation.

• Advocating three concepts ofcutting-edge environmentalconsideration, state-of-the-artsafety and security, and state-of-the-art researchenvironment.

Source: Oyabashi Corporation, Technical Research Institute



Figure: Multipurpose laboratory 1

Figure: Master Plan

• The main concept of the Multipurpose Laboratory is skeleton-infill building.

• By using the space flexible they will respond to the changes of the social demands quickly.




Figure: Master Plan

Figure: Multipurpose Laboratory 2

• It is an experiment space where you can "fascinate" visualization and simulated experiences of technology.

• Experimental facility works on the fields of green innovation.




Figure: Materials and Chemical Engineering Laboratory

Structural Engineering Laboratory

Fire Protection Engineering Laboratory

Electromagnetic Environment Laboratory

Environment EngineeringLaboratory

DynamicsLaboratory




SPECIAL FEATURES:

30

Q-1 Indoor Environment - Ecological roof system that lets daylight into rooms thoroughly

- Solar radiation control system/Peri-buffer system that reduces air-conditioning

loads while allowing for open space structure

- Displacement ｎatural ventilation system for large-scale space

- Sensible/latent heat separated personal radiant air-conditioning system that

treats for comfortable and energy-saving

- Use of task/ambient lighting system. Flicker control of task lights using IC tags

- Introduction of air-conditioning system using blower outlet on the floor in the

workplace, and control of CO2 emissions

- Personal floor diffusing air-conditioning system, and CO2 monitor control system.

Q-2 Quality of Service - A wide and open workspace with a vaulted high ceiling

- Ensuring flexibility by adopting large span frames and separated cores

- High seismic capacity (seismic isolation structure/Super active vibration control

structure)

- Enhanced reliability through installation of advanced information network

systems, power generators and uninterruptible power systems (UPS)

- Rainwater and well water treatment system

- Preparation of gravity water supply system for toilets and emergency sewage

tanks as a disaster preparedness

Source: Japnese Sustainable Building Database



Q-3 Outdoor Environment on Site - Mitigating impact on the surrounding environment by adopting low-

rise building design and keeping large green space

- Improved thermal environment by introducing wet type of exterior

pavement materials

LR-1 Energy - 36 % reduction in PAL value

- 42 % reduction in ERR value, an integration of CEC values

- Natural energy utilization system including photovoltaic (150 kW)

/wind power generation, utilization of daylight, geothermal power and

natural ventilation

- Visualization system utilizing BEMS for raising environmental

awareness of occupants of the building

LR-2 Resources and Materials - Cascade using rainwater and well water for saving resources

LR-3 Off-site Environment - Decided location of facilities and trees with consideration for prevailing

wind and thermal environment

- Appropriate sound-deadening silencer for equipment on the roof

31




ECOLOGICAL ROOF SYSTEM

32

PHOTO VOLATIC PANEL SET UP IN 30 DEGREE

Solar panels installed on the entire of the slanted roof which generate highly effective power .


TECHNICAL DETAIL OF Q1: INDOOR ENVIRONMENT

1. ECOLOGICAL ROOFSYSTEM



2. NATURAL LIGHTING BY REFLECTION OF INDIRECT LIGHT

33

• A slanted roof and a porch facing high side light were installed on a wide upper portion of the room .

• A System that diffracts skylight with less fluctuation on a reflecting surface eliminates the need of lighting during daytime .




3. PERI BUFFER SYSTEM

34

• This peri-buffer zone is intended to control impact of air-conditioning loads on the inside working zone, and consists of aisles, meeting space and lounges that are located around the working area and adjacent to an outdoor deck .

• A thermal buffer zone established around windows reduces airconditioningloads.




4. DISPLACEMENT NATURAL VENTILATION SYSTEM

35

• When outside air meets the predetermined conditions, an air-conditioner is stopped automatically. The air is discharged from high side lights on the upper of the building.

• This helps control adverse effects of increase in outside air temperature caused by sunlight reflected by exterior pavement materials




5. SENSIBLE/LATENT HEAT SEPARATED PERSONAL RADIANT AIR-CONDITIONING SYSTEM (O-TASC)

36

• Personal air-conditioning by using radiative-convective task panels.• A desiccant air-conditioner treats latent heat of the outside air properly, and brings

it into the zones through blower outlets on the floor.• Task panels treat sensible heat generated from human.




6. LIGHTING/AIR-CONDITIONING CONTROL SYSTEM USING IC TAGS

37

• IC tags that are used for security control detects if individual staffs are at their seats and in the office, and task lighting and air-conditioning systems are controlled to be turned on/off.

• Detailed switch control depending on the required time and location allows for eliminating unnecessary energy use.




•well water is used as heat source for the heat pump to improve the efficiency in heat source operation. •A heat source system that utilizes stable geothermal power throughout the year.


TECHNICAL DETAIL OF LR1: ENERGY

1. HYBRID HEAT PUMP SYSTEM OF GEOTHERMAL AND WELL-WATER HEAT



2. VISUALIZATION SYSTEM

•The visualization system displays the effects of environmental measures on the monitor for occupants by utilizing the energy data obtained from BEMS.• It calculates and displays energy usage and its reduction in terms of CO2 emissions by it .





CASBEE SCORE:



CASBEE BREEAM LEED GRIHA

Year of commence 2001 1990 1998 2007

Country of origin

Japan UK USA India

Developed by Building Research Establishment Ltd

Geographical focus

Global, specially inJapan

Global Global Local

COMPARATIVE ANALYSIS



Characteristics

CASBEE

• Primarily on environment concern

• Having 3 stages of development

BREEAM

Two process of assessment1. Design stage2. Post

construction



Characteristics

LEED

• A voluntary tool constitute of 5 sustainability areas

• Industrial standard certification process

GRIHA

• Designed for building’s environmental performance in context to Indian atmospheric condition




Assessment criteria for Green Building tool

Built environment

quality

Indoor

environment

Quality of

service

Built environment

load

Energy

Resources and

material

Off-site

environment

Management

Health and wellbeing

Energy

Water

Material

Transport

Waste

Landuse and ecology

Pollution

Sustainable site

Water efficiency

Energy and

atmosphere

Materials and

resources

Indoor

environmental

quality credits

Innovation in design

Regional priority

Sustainable site

Water management

Energy optimization

Sustainable building

materials

Waste management

Building operation

and maintenance

Innovation



Certification cost $3570-$4500$1290 each stage $1,250-$17500

5000sq.m. -3,14,000 Rs + 3.75 per sq.m. above 5000 sq.m

Results

Representation

Various graphs Pass

Good

Very good

Excellent

Certified

Silver

Gold

Platinum

50-60

61-70

71-80

81-90

91-100

Result Product

40%50%60%80%




• CASBEE is a very good tool for evaluating the sustainability of a built space that is available to use worldwide, primarily in Japan, the country of its origin.

• CASBEE is highly technical and assesses a building on two main criteria viz Building load (L) and Building quality (Q).

• The results of CASBEE are prepared in form of build environment efficiency (BEE) graphs, histograms and spider webs apart from categorizing buildings as S(excellent), A, B+, B- and C(poor)

• Obayashi Technical Research Institute: Natural lighting, ventilation, ecological roofing, and other energy saving green strategies have been well used in the building.

47

CONCLUSION



• Nepal needs a rating system of its own. From design to completion, everything needs to be assessed for sustainability and energy efficiency.

• Though it may be difficult, there could be a master rating system in the world that could be sub divided for regional or local environmental and built environment assessment. This could help bring homogeneity in the evaluation.

• Bodies like the United Nations could regulate the system at global level.

48

RECOMMENDATION



REFERENCES• (JSBC), J. G. (2014). An overview of CASBEE. Retrieved from Welcome to CASBEE: http://www.ibec.or.jp/CASBEE/english/overviewE.htm

• Agency, E. P. (n.d.). Environmental Protection Agency. Retrieved December 2017, from https://www.epa.gov/greenbuilding/pubs/about.htm

• Agency, E. P. (n.d.). Why Build Green Building. Retrieved December 2017, from https://archive.epa.gov/greenbuilding/web/html/whybuild.html

• Candace Say, A. W. (2008). CTBUH Journal. Retrieved from sustainable rating systems around the world:

http://global.ctbuh.org/resources/papers/download/1139-sustainable-rating-systems-around-the-world.pdf

• Conservation（IBEC）, J. S. (n.d.). welcome to CASBEE. Retrieved from Welcome to CASBEE website:

http://www.ibec.or.jp/CASBEE/english/

• CTBUH. (n.d.). Sustainable Rating Systems Around the World. Retrieved December 2017, from


• Green Building Concept. (n.d.). Retrieved December 2017, from SCRIBD: https://www.scribd.com/doc/35910007/Green-Building-Concept

• IBEC. (2017). http://www.ibec.or.jp/CASBEE/english/. Retrieved from About CASBEE.

• IBEC. (n.d.). IBEC. Retrieved December 2017, from CASBEE: http://www.ibec.or.jp/CASBEE/english/backgroundE.htm

• Progress, T. (n.d.). Cost and Benefits of Green Buildings. Retrieved December 2017, from Think Progress: https://thinkprogress.org/costs-and-

benefits-of-green-buildings-ceef267baf06/#

• Obayashi Corporation. Japan Sustainable Building Database. 12 December 2017. Document. April 2011.

• Sustainable Building Challenge 2011. 12 December 2017. Document. October 2011.

• Inhabitat. (2017, December 12). Retrieved January 28, 2014, from inhabitat: www.inhabitat.com

http://www.ibec.or.jp/CASBEE/english/overviewE.htm

https://www.epa.gov/greenbuilding/pubs/about.htm

https://archive.epa.gov/greenbuilding/web/html/whybuild.html


http://www.ibec.or.jp/CASBEE/english/


https://www.scribd.com/doc/35910007/Green-Building-Concept

http://www.ibec.or.jp/CASBEE/english/backgroundE.htm

https://thinkprogress.org/costs-and-benefits-of-green-buildings-ceef267baf06/

http://www.inhabitat.com/



THANK YOU

ありがとうございましたArigatōgozaimashita

50