1. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEEGREEN BUILDING ASSESSMENT: 1
Presented by:
• Alina Dallakoti 71003
• Asmita Dahal 71010
• Pratikshya Dhital 71022
Green Building
Assessment using
CASBEE
Supervisor:
Sr. Lec. Anjana Shrestha Vaidya
Green Building Design
AR 825 02
Department of Architecture
Kathmandu Engineering College February 2019
2. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
1. Introduction
i. What is Green Design?
ii. What is CASBEE?
iii. How is assessment done in
CASBEE?Rating System
Breakdown Scoring
System
Rating System
2. Case Study: BUTWAL HYDROPOWER COMPANY
I. Introduction of the building
II. Quality features
i.
ii.
iii.
Q1
Q2
Q3
III. Load
featuresL1
L2
L3
IV. BEE Value
Calculation
V. BEE Graph
3. Conclusion and Recommendation
CONTENTS
3. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
• Green design is an approach to building that minimizes harmful effects on
human health and environment.
• Green building uses less water, optimizes energy efficiency, conserves
natural resources, generates less waste and provides healthier space for
occupants as compared to conventional buildings.
GREEN DESIGN
4. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
OBJECTIVES OF GREEN BUILDING
• To reduce the overall impact on human health and the natural
environment by the following ways.
• To use energy, water and other resources efficiently.
• To reduce waste, pollution and environmental degradation.
6. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
NATIONAL CONTEXT
• Prototype Buildings Construction
• Excessive Modernization and Urbanization
• Current development patterns and practices are environmentally
unfriendly or wasteful.
Zero energy house, Pulchowk Matoghar, Budhanilkantha Residence of Ujjawal Man Shakya
7. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
• 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)
CASBE
E
8. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
The overall scoring breakdown for CASBEE is broken down to
the following categories:
RATING SYSTEM
BREAKDOWN
9. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Due to the complex nature of CASBEE, the percentage that each
category contributes to the overall score, varies by project.
RATING SYSTEM
BREAKDOWN
10. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
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
CASBEE RATING SYSTEM
11. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
CASE STUDY ASSESSMENT
• BUTWAL POWER COMPANY Ltd.
• Location: Buddhanagar, Kathmandu
• Building Typology: Head Office
• Structural Technology: RCC
• Chief Architect: Ujjwal Man Shakya
• Consulting Firm: Innovative Creaters
Pvt. Ltd.
13. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q1(INDOOR ENVIRONMENT): EAT SYSTEM
To maximize building’s performance and energy savings.
•Tube Depth and length: 4m below the surface constant
throughout the year
Length of pipe: Increased length; increased heat
transfer and higher efficiency (Winter)
Increased length: Increased pressure drop and increased
fan energy(Summer)
Butwal power company: 4m Depth AND 75m length of tube
14. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
• Tube Diameter
Smaller diameter –better thermal performance; larger pressure drop
increasing fan energy requirement.
Increased diameter: reduction in air speed and heat transfer.
Optimum determined by actual cost of tube and excavation cost.
Butwal power company : 400 Dia HDPE PIPE
15. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
• Tube Arrangement
-Open Loop System
-Closed Loop System
On the basis of number of tubes,
-One-tube system
-Parallel Tubes System
Butwal power company : Open loop and Parallel (2) tube system
16. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
INTAKE WELL
SOLAR PANELS
BLOWERS AND DUCTS
DIFFUSERS
COLLECTOR WELL (20’ x 20’)
FILTERS
17. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q1(INDOOR ENVIRONMENT):
Use of materials : ACP which provides a degree of thermal insulation.
Building oriented north and all the office work
space on the same side to avoid the sun glare
18. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Concerned Items
SCORE
AVAILABLE
SCORE
OBTAINED
Q1 Indoor Environment
1.1Noise & Acoustics 3.80 2.80
1.2 Thermal Comfort 3.50 2.00
1.3Lighting & illumination 3.90 3.36
1.4 Air quality 3.20 3.00
Q1 (Indoor
Environment):
19. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q2-ROOF GARDEN
Green roofs reduce the temperature of the building and the
surrounding air in multiple ways
• SHADING
• EVAPOTRANSPIRATION: absorb water -use surrounding
heat from the air to evaporate the water.
• Bpc: roof garden on the top floor as outdoor canteen.
• Drain lines provided through canal system.
• Also used as catchment area for rain water harvesting
20. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q2-FALSE CEILING AND LIGHTINGS
• Provides an insulating effect - air trapped between
actual ceiling and the false one.
• Reduces heat during summers and cold during winters
BPC- False ceiling provided at building and work space to
maintain insulation as well as for aesthetic.
• Diffusers inserted in false ceiling which is connected with
the duct of blower.
Use of light fixtures
21. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q2-OVER HANGS AND GLAZINGS
• Fixture on the outside -Design because it blocks
the sun’s heat energy.
BPC :- No overhangs to control solar radiation.
Translucent glass used to control the heavy sun
penetration.
Diffused lightings to work
space
22. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q2-DOOR SENSORS
DOOR SENSORS IN BUTWAL HYDROPOWER
Energy saving
Due to the motion sensors, doors only open when it is
necessary. Once you have crossed them, they close again
Essential to maintain the temperature of the installations and
for energy savings.
The less time it is open, the less energy is lost.
Places with doors left ajar spend more on heating and/or air
conditioning.
Also serve as a natural barrier to maintain the desired
temperature.
23. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Canteen area decor
Work space decor
Q2 (AMENITIES):
Roof garden for refreshment
24. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q2 (DURABILITY AND RELIABILITY):
•Earthquake reliability
•Building is in regular grid construction
•Performs better during an earthquake as well as provides aesthetical feature
Various electricity power source -
pv cells power, nea supply ups,
25. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q2 (Quality of
Services):
Concerned Items
Score
Available
Score
Obtained
Q2 Quailty of Service
2.1 Service Ability 3.6 3.23
2.2 Durability and Reliability 3.4 2.90
2.3 Flexibility and Adaptibility 0.5 0.2
26. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Accessibility for
maintenance but
not so easy
Q2-MAINTEANCE MANAGEMENT
27. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Q3-TOWNSCAPE AND OUTDOOR AMENITY:
The landscape is the fusion of
Green and Concrete Does not Enhance the
Townscape
Parking followed by patch of
greenery
Reed bed plants in the west directon
28. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Concerned Items
Score
Available
Score
Obtained
Q3 Outdoor Environment on Site
1 Conservation and Creation of Biotope 4.0 1.00
2 Townscape and Landscape 5 3.00
3 Local Characteristics and Outdoor Amenity 4.5 1.50
Q3 (Outdoor environment on
site ):
29. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
L1 SOLAR LIGHTINGS:
• Use for the energy efficient building design and green
approach, used as the bipvs in the modern corporate
office buildings
SOALR PANEL IN BUTWAL HYDROPOWER
Depending upon the size of building and energy demand:
Small to Medium Size Business Solar Systems: 20 - 50 kW
Commercial Grade Solar Systems: 50 - 100 kW
The average size of solar panels used in a rooftop solar installation is
approximately 65 inches by 39 inches, or 5.4 feet by 3.25 feet.
Two types of solar panels
39 panels of size 2’6”x3’
250 panels of size 3’
Total capacity-34kw
Small to medium size solar system
Use of glasses for natural lightings
30. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Concerned Items
SCORE
AVAILABLE
SCORE
OBTAINED
LR1 Energy
1 Building thermal load 4.0 2.50
2 Natural energy utilization 3 2.00
3 Efficiency in building service system 4.5 2
4 Efficient operation 3.5 2.2
L1
(Energy):
31. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
L2 INSULATING MATERIALS:
No any mechanism for insulation except the use of
false ceiling and ACP cladding
Provision of Powdered Fire Extinguisher As Fire
Retardant
32. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
Concerned Items
Score
Available
Score
Obtained
L2 RESOURCES AND MATERIALS
2.1 Water Resources 3.7 3.4
2.2 Reduction of non renewable material use 4.0 1
2.3 Material with low heat risk 3.7 1
L2 (Resources and Materials):
33. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
L3: ROOF GARDEN, WATER DISCHARGE
Heat island effect is
mitigated by vegetation,
Rain water discharge
through 2mm plastic pipes
Soil layer
Round gitti
Water proof membrane
34. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
RAINWATER HARVESTING IN BUTWAL HYDROPOWER
Rainwater harvesting is the
accumulation and storage of rainwater
for reuse on-site, rather than allowing
it to run off.
-Small pipes to collect water from
garden’s section
-3 storage tank of capacity 1lakh litre,
45000 litre , 15000l itre
-Underground of size 15’x4’ collected
through ducts
-Sand and gravel as the natural filter
-Rainwater used for fire extinguishing
L3: RAIN WATER HARVESTING
35. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
L3: WASTE WATER MANAGEMENT
Reed bed plants for purifying the grey
water from the basins and kitchens
Proposed to be use for the watering of
plants
Not in proper applications
WASTE WATER MANAGEMENT BY REED BED IN BUTWAL
HYDROPOWER
With the help of common reed
plants, reed beds drain all
wastewater and pollutants from
solids
Transfer oxygen directly from
their root systems and through
their stems.
By a multitude of micro-
organisms
36. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
L3 (Off Site
environment):
Concerned Items
Score
Available
Score
Obtained
L3 FOR OFF site environment
1Consideration of Global Warming 3.8 1.50
2Consideration of Local Environment 3.1 2.0
3Consideration of Surrounding Environment 3.7
1.5
37. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
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
Q VALUE = 22.99
L VALUE = 19.1
Q/L =22.99/19.1 =
1.20
:BUTWAL POWER COMPANY Ltd.
38. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
SOCIAL IMPACT
• Positive impact on residents of surrounding for the use of Earth air
tunnel.
• Solar panels encouraging people towards the use of it.
• Roof garden, rain water harvesting, reed bed plants encouraging people
of surroundings towards its use.
• Positive example for the initiation of green building in society.
• Breakage of skyline
39. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
CONCLUSION
• Green approach limited to techniques only.
• Lack of focus on green building materials for the construction resulting
low thermal insulation.
• Waste management techniques-Reed bed were propsed but not
applied practically.
• Water from rain water harvesting system is not in frequent use hence
wastage of water.
• Solar panels in sufficient amount but the building is still using supply of
NEA.
• EAT as a only and properly executed technique to alter the
temperature.
• Work space planned at north to avoid the glare.
40. FINAL PRESENTATION
FALGUN 2075
BUTWAL POWER COMPANY LIMITED
GREEN BUILDING ASSESSMENT : CASBEE
RECOMMENDATION
• Solar panels could be used BIPVS for space efficiency and also as a
building material.
• Energy generated from PV cells could be used as a energy to sustain the
whole building.
• Water purified from reed bed plants could be used properly in
gardening.
• Water from the rain water harvesting could be used in basins and
commode for its proper use.
