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CASBEE

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Building Assessment Systems and case studies

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CASBEE

  1. 1. CASBEE PRESENTATION ON RAHUL BAJRACHARYA 69029 ROJAN SHRESTHA 69031 ROJINA SHRESTHA 69032 SHRISTI SHAKYA 69044
  2. 2. Green Building??? Creating structures and using processes that are: environmentally responsible resource-efficient throughout a building’s life- cycle from siting to design, construction, operation, maintenance, renovation and deconstruction.
  3. 3. – Reduce carbon consumption, – Energy independence, – Preserve natural systems – Improved building performance – Increased revenue (higher rents/sales price, improved productivity, fewer/shorter vacancies) – Lower cost (utilities, costs of conversion) Why Green???
  4. 4. Comprehensive Assessment System for Built Environment Efficiency
  5. 5. Building Rating System • 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.
  6. 6. 6 40% of CO2 are related to buildings in Japan New construction Residential bldgs 3.4% Commercial bldgs 3.2% Renovation 1.1% 0.9% Operation 13.5% 18.0% Construction Operation Renovation DemolitionMaterial Production Design by T. Ikaga 1300Mt-CO2 in 2005
  7. 7. Introduction • Rating system: CASBEE • Established year: 2001 • Supported by: Japanese ministry of Land, Infrastructure, Transport and Tourism. • Assesses the quality of a building environmental awareness in using building materials and equipment that have little environmental impact, level of comfort of an interior or the views 25 30 35 40 45 120 E 125 130 135 140 145 Tokyo Shang hai Osaka Seoul Pusan Beijing Shenyang Vladivostok Taipei P´yongyang Nagoya Sapporo Yuzhno Sakha Fukuoka
  8. 8. 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. 9. CASBEE assessment tools principles [1] Comprehensive assessment throughout the life cycle of the building [2] Assessment of the Built Environment Quality and Built Environment Load [3] Assessment based on the newly developed Built Environment Efficiency (BEE) indicator APPLICATION: • CASBEE-Housing and CASBEE-Building are applied for individual houses and buildings to assess their environmental performance. • CASBEE-Urban Development is used to evaluate environmental performance of urban blocks and town development. • CASBEE-City evaluates environmental performance on a local government scale. • These are assessed based on BEE indicators by CASBEE. CASBEE Assessment Tools
  10. 10. • CASBEE-Housing and CASBEE-Building are applied for individual houses and buildings to assess their environmental performance. • CASBEE-Urban Development is used to evaluate environmental performance of urban blocks and town development.
  11. 11. Four Basic Tools Pre-design, CASBEE for New Construction, CASBEE for Existing Buildings, CASBEE for Renovation
  12. 12. 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 CASBEE for Specific Purposes (April 2014)
  13. 13. Building Environmental Quality and Performance: CASBEE major categories of criteria Indoor Environment Quality Thermal comfort Acoustics and noise Lighting and illumination Air quality Quality of service Functionality and usability amenities Durability and reliability flexibility and adaptability Outdoor environment on site preservation and creation of biotope outdoor amenities townscape and landscape
  14. 14. Building Environmental loading: Resources and materials recycled materials Water conservation materials with low health risks sustainably harvested timber Energy thermal load efficiency of systems use of natural energy efficient operations Off-site environment air pollution, noise and vibration sunlight obstruction, light pollution heat island effect, and local on local infrastructure CASBEE major categories of criteria
  15. 15. 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 Evaluation Assessment Areas of Q & L Hypothetical Enclosed Space for CASBEE 1. Energy efficiency 2. Resource efficiency 3. Local environment 4. Indoor environment (ca. 80 sub-items in total) Target Areas
  16. 16. Assessment Field % of the overall weight Items related to L % of the overall weight Water Efficiency 50 Water Leakage Detection (3.6%) water use during construction (1.8%) Waste water management (7.2%) Sanitary Used Pip (2.4%) 15 Materials and Resources 10 Regionally procured materials (1.5%) Materials fabricated on site (0.5%) Use of readily renewable materials (1.5%) Use of salvaged materials (1.5%) Use of recycled materials (2%) Use of lightweight materials (0.5%) Use of higher durability materials (0.5%) Use of prefabricated elements (1.5%) Life Cycle Cost (LCC) analysis of materials in the project (0.5%) 0 Indoor Environmental Quality 10 10 CASBEE ASSESSMENT PROCESS
  17. 17. Assessment Field % of the overall weight Items related to L % of the overall weight Sustainable Site. Accessibility and Ecology I5 Desert area development (1.5%) Informal area redevelopment (1.5%) Brownfield site redevelopment (1.5%) Compatibility with National Development Plan (1.5%) Transport infrastructure connection (1.5%) Catering for remote sites (1.5%) Alternative methods of transport (1.5%) Protection of habitat (1.5%) Respect for sites of historic or cultural interest (1.5%) Minimizing Pollution during construction (1.5%) 0 Energy Efficiency 25 Passive External Heat Gain loss Reduction (3.5%) Energy Efficient Appliances (1.5%) Vertical Transportation Systems (1.5%) Peak Load Reduction (3%) Renewable Energy Sources (5%) Environmental Impact (2%) Energy and Carbon Inventories (1%) 7.5
  18. 18. Assessment Field % of the overall weight Items related to L % of the overall weight Management 10 Providing Containers for site materials waste (1%) Control of emissions and pollutants (1%) waste recycling workers on site (0.5%) Providing Identified and separated storage areas (1%) Project Waste Management Plan (0.5%) Engaging a company specialized in recycling (1%) Protecting water sources from pollution (1%) Waste from mixing equipment (1%) 3
  19. 19. Assessment Field % of the overall weight Items related to Q % of the overall weight Sustainable Site. Accessibility and Ecology 15 0 Energy Efficiency 25 Energy Efficiency Improvement (5%) Optimized balance of Energy and Performance (2%) Operation and Maintenance (0.5%) 7.5 Water Efficiency 30 Indoor Water Efficiency Improvement (4.8%) Outdoor Water Efficiency Improvement (5.4%) Efficiency of Water-based Cooling (2.4%) Water Feature Efficiency (2.4%) 15 Materials and Resources 10 0 Indoor Environmental Quality 10 Optimized Ventilation (3.33%) Controlling emissions from building materials (3.33%) Controlling emissions from building materials (3.33%) Thermal Comfort (1.3%) Visual Comfort (1.3%) Acoustic Comfort (0.67%) 10
  20. 20. Assessment Field % of the overall weight Items related to Q % of the overall weight Management 10 Providing access for lorries, plant and equipment (0.5%) Providing a Building User Guide (1.5%) Providing a Periodic Maintenance Schedule (1%) 3
  21. 21. (Neighboring building) (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 CO2 Emission, etc. Soil, Water-pollutants etc. What is ‘Hypothetical Boundary’?
  22. 22. BEE Representation • Plot L on the x axis and Q on the y axis. • The BEE value assessment result is expressed as the gradient of the straight line passing through the origin (0,0). • The higher the Q value and the lower the L value, the steeper the gradient and the more sustainable the building is. • possible to graphically present the results of built environment assessments using areas bounded by these gradients.
  23. 23. From Eco-efficiency to Built Environment Efficiency (BEE) • Eco-Efficiency - "Value of products and services per unit environmental load.” • Efficiency - in terms of input and output quantities • so a new model - expanded definition of Eco-Efficiency - as "(beneficial output) / (input + non-beneficial output)." • This new model of environment efficiency can be extended to define Built Environment Efficiency (BEE), which CASBEE uses as its assessment indicator.
  24. 24. “BEE Graphical Display” 50 100 0 50 100 C B+AS BEE=1.5BEE=3.0 BEE=0.5 L Q B- BEE=1.0 (Very sustainable) (Unsustainable) 30 60 BEE=2.0 B-
  25. 25. Rating system Rating for CASBEE Ranks Assessment BEE value Expression S Excellent BEE= 3.0 or more and Q=50 or more ***** A Very good BEE=1.5-3.0 BEE=3.0 or or more and Q is less than 50 **** B + Good BEE=1.0-1.5 *** B Fairy Poor BEE=0.5-1.0 ** C Poor BEE=less than 0.5 *
  26. 26. CASBEE Different Than Other Rating System - New concept for assessment (distinguishes environmental load from quality of building performance) - CASBEE results are presented as a measure of eco-efficiency or BEE. - Accuracy of Data Inputting High ,Accuracy of Data Processing High ,Accuracy of Data Outputting high
  27. 27. Comparison between various rating system BREEAM LEED CASBEE GRIHA Year of commence 1990 1998 2001 2007 Country of origin UK USA Japan India Developed by Building Research Establishment (BRE) Ltd U.S Green Building Council (USGBC) Japan Sustainable Building Consortium (JSBC) MNRE Geographical focus Global Global Global but specially in japan Local, India and nearby area Characteristics Two process of assessment. 1.Design stage 2.Post construction A voluntary tool constitute of 5 sustainability areas. Industrial standard certification process Primarily on environment concern. Having 3 stages of development Designed for building’s environmental performance in context to Indian atmospheric condition
  28. 28. Building type Offices, retails, industry units, courts, educations, healthcare, prison Healthcare facilities, schools, homes, entire neighbourhoods. Residential and non-residential type of building Commercial,resid ential and Institutional Assessment criteria for green building tool 1.Management 2.Health and Wellbeing 3.Energy 4.Water 5.Material 6.Trasport 7.Waste 8.Landuse and Ecology 9.Pollution 1.Sustainable site 2.Water efficiency 3.Energy and atmosphere 4.Materials and resources 5.Indoor environmental quality credits 6.Innovation in Design 7.Regional Priority Built environment quality 1.Indoor environment 2.Quality of service 3.Outdoor environment on site Built load 1.Energy 2.Resources and material 3.Off-site environment 1.Sustainable Site 2.Water Management Energy optimization 4.Sustainable building materials 5.Waste Management 6.Health and wellbeing 7.Building operation and maintenance 8.Innovation Comparison between various rating system
  29. 29. BREEAM LEED CASBEE GRIHA Certification cost $1290 each stage $1,250-$17500 $3570-$4500 <5000sq.m. -3,14,000 Rs >5000sq.m. -3,14,000 Rs + 3.75 per sq.m. above 5000 sq.m. Results Representation Pass, Good, Very Good, Excellent Certified (40%), Silver (50%), Gold (60 %), Platinum (80%) "spider web" diagram, histograms and BEE graph 50-60 is 1 star 61-70 is a 2 star 71-80 is a 3 star 81-90 is a 4 star 91-100 is a 5 star Result Product Certificate Award letter, certificate and plaque Certificate and website published results Certificate Comparison between various rating system
  30. 30. Disadvantages • Meticulous record keeping is required • The main disadvantage of the certification process is that they are expensive. • Sometimes the availability of materials may cause problem. • Takes time for the certification.
  31. 31. 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
  32. 32. Utilization of CASBEE in local governments
  33. 33. Number of buildings reported to local governments (as of March 2015)
  34. 34. CASE STUDY-OBAYASHI TECHNICAL RESEARCH INSTITUTE MAIN BUILDING [CASBEE rank] S (5 STAR) [CASBEE tool used] CASBEE for New Construction (2008 edition) [Location] Kiyose City, Tokyo [Completion date] September, 2010 [Site area] 69,401m 2 [Total floor area] 5,535m 2 [Structure] Steel construction (seismically isolated structure (Super-Active base isolation system)) [Owner] Obayashi Corporation [Designer] Obayashi Corporation [Contractor] Obayashi Corporation Project Outline This building is a central workplace for Obayashi Corporation. With an aim to create an environmentally- friendly workplace, the building adopted a complex passive. The systems allowed for 55 percent reduction in CO2 emissions during operation, the highest level in Japan. Awards Adopted as the 2nd Model Project for Promoting CO2 Reduction in Housing and Building in 2009 by the Ministry of Land, Infrastructure, Transport and Tourism Source: Japanese Sustainable Building database
  35. 35. ABOUT THE PROJECT Source: Japanese Sustainable Building database
  36. 36. ABOUT THE PROJECT Source: Japanese Sustainable Building database
  37. 37. ECOLOGICAL ROOF SYSTEM Solar panels installed on the entire of the slanted roof generate power. A system that diffracts skylight with less fluctuation on a reflecting surface eliminates the need of lighting during daytime. Source: Japanese Sustainable Building database
  38. 38. PERI-BUFFER SYSTEM 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 air- conditioning loads. Source: Japanese Sustainable Building database
  39. 39. Displacement Natural ventilation system This helps control adverse effects of increase in outside air temperature caused by sunlight reflected by exterior pavement materials 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. Source: Japanese Sustainable Building database
  40. 40. SENSIBLE/LATENT HEAT SEPARATED PERSONAL RADIANT AIR-CONDITIONING SYSTEM (O-TASC) 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. Source: Japanese Sustainable Building database
  41. 41. LIGHTING/AIR-CONDITIONING CONTROL SYSTEM USING IC TAGS 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. Source: Japanese Sustainable Building database
  42. 42. HYBRID HEAT PUMP SYSTEM OF GEOTHERMAL AND WELL-WATER HEAT •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. Source: Japanese Sustainable Building database
  43. 43. 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 items on a real time basis. Source: Japanese Sustainable Building database
  44. 44. SUMMARY Source: Japanese Sustainable Building database
  45. 45. Bibliography http://www.sciencedirect.com/science/article/pii/S1877705811048636 http://www.survivalrenewableenergy.com/ http://www.ijern.com/journal/November-2013/41.pdf (BREEAM,20 13), (Mao et al., 2009) LEED, 2013), (Ding, 2008) CASBEE, 2013), (Ding, 2008), (Sinou & Kyvelou, 2006)

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