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 2017
1
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. Introduction
i. What is green building?
ii. CASBEE: Background
iii. Beginning and history of development
iv. Types of CASBEE
v. CASBEE for specific purpose
vi. Statistics of Buildings Assessed
2. Rating system breakdown
3. Scoring System
4. CASBEE Rating System
5. CASE STUDY: OBAYASHI TECHNICAL RESEARCH INSTITUTE
i. Introduction
ii. Rating status
iii. Features
iv. 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.
3
Source: 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, industry
and 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.ne
t/athulyaaby/
casbee-
certification)

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)

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 TOOLS
1. 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 Houses
CASBEE 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 DEVELOPMENT
MP: MARKET PROMOTION
DH: DETACHED HOUSES
BD: 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 outside
the 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 the
Institute of Technology
• Designed with state-of-the-art
technologies developed by
Obayashi Corporation.
• Advocating three concepts of
cutting-edge environmental
consideration, state-of-the-art
safety and security, and state-
of-the-art research
environment.
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
Engineering
Laboratory
Dynamics
Laboratory

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 airconditioning
loads.

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
in
Japan
Global Global Local
COMPARATIVE ANALYSIS

Characteristics
CASBEE
• Primarily on
environment concern
• Having 3 stages of
development
BREEAM
Two process of
assessment
1. Design stage
2. 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
http://global.ctbuh.org/resources/papers/download/1139-sustainable-rating-systems-around-the-world.pdf
• 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

THANK
YOU
ありがとうございました
Arigatōgozaimashita
50

Casbee final presentation 2070 batch

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