The Green Buiding Debate
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This presentation was co-delivered by Eman Farag & Diaa El-Masry at MEP Qatar Conferencey, June 2011
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The Green Buiding Debate
- 2. 1 1. Mandatory or Voluntary? 2. Added Cost or Added Value? 3. Green MEP or Conventional (Grey) MEP? 4. Conclusion
- 3. 2
- 4. 3 Impacts Resulting from Built Environment Source: IEA Statistics Division, UN Statistics Division, QSAS Manual Impacts of the Built Environment Air Pollution Land Use & Contami- nation Fossil Fuels Depletion Water Depletion Water Pollution Materials Depletion Human Health Climate Change • Largest Consumer of Energy, per capita. • Largest Producer of CO2 (69.2 metric tons – 2004) • 6% of the Total GCC Emissions from Air Pollutants • Highest Water Consumption Rates on Earth! • Will have No remaining Fresh Water within approx. 2- 5 years.
- 5. Green Building Areas Safeguarding Water and Water Efficiency Sustainable Site Planning Energy Efficiency and Renewable Energy Conservation of Materials and Resources Indoor Environmental Quality 4 Defining Green Building The Design and Construction Practices that significantly Reduce or Eliminate the negative Impacts of Buildings on the Environment and Occupants in Five broad areas: Source: USGBC
- 6. 5 Economic Benefits: • Reduce operating costs • Create & expand markets for green product and services • Improve occupant productivity • Optimize life-cycle economic performance Social Benefits: • Enhance occupant comfort and health • Preserve Cultural Identity • Minimize strain on local infrastructure • Improve overall quality of life Environmental Benefits: • Enhance and protect biodiversity and ecosystems • Improve air and water quality • Reduce waste streams • Conserve and restore natural resources Green Building Benefits…
- 7. 6 What Measures a Green Building? Source: World Green Building Council BREEAM LEED Estidama QSAS
- 8. BREEAM LEED Estidama PRS QSAS 1990 1998 2010 2010 BREEAM 2011 (1 st of July) LEED 2009 (LEED V3.0) PRS V2.0 (2011) QSAS V1.0 UK + Europe + Gulf US + Global Abu Dhabi (UAE) Qatar + GCC BRE (Building Research Establishment) USGBC (US Green Building Council) Abu Dhabi Urban Planning Council GORD (Gulf Organization for Research & Development) Offices / Retail / Industrial / Education / Healthcare / Residential / Prisons / New Construction / Core & Shell / Schools / Commercial Interiors / Existing Building / Homes / Neighborhood Development Office / Retail / Multi Residential / School / Mixed-Use / Community / Villas Commercial / Residential / Schools / Light Industry / Hotels / Mosque / Core & Shell / Sports / Neighborhood / Construction / Operation Pass >> Good >> Very Good >> Excellent >> Outstanding Certified >> Silver >> Gold >> Platinum 1 Pearl >> 2 Pearls >> 3 Pearls >> 4 Pearls >> 5 Pearls 1 Star >> 2 Stars >> 3 Stars >> 4 Stars >> 5 Stars >> 6 Stars >> 7 What Measures Green Building?
- 9. 8 Which is Mandatory? All buildings on the Government Estate to achieve: - A minimum BREEAM rating of Excellent for new buildings -A minimum BREEAM rating of Very Good for all major refurbishments. Source: DEFRA, (Department for Environment, Food and Rural Affairs) Various LEED initiatives including legislation, executive orders, resolutions, ordinances, policies, and incentives are found in 45 states, including 442 localities , 35 state governments , 14 federal agencies or departments, and numerous public school jurisdictions across the United States. Source: USGBC website “All new buildings must meet the 1 Pearl requirements starting in September 2010. All government funded buildings must achieve minimum 2 Pearls. Significant effort has been made to align the PBRS with the Abu Dhabi Development and Building Codes.” Reference: Executive Council Order of May 2010 “The Qatar Sustainability Assessment System (QSAS) certification will become mandatory for all new projects in the country soon” Source: Qatar Tribune, 27/4/2011 in a statement by Dr. Youssef Al-Horr
- 10. Incorporate Green into QCS Fund Research & Develop- ment Re-write Building Codes Materials & Systems Approval 9 Suggested Enforcement Process • Education & AwarenessStep-1 • Start by Government BuildingsStep-2 • Provide IncentivesStep-3 • Raise the Bar GraduallyStep-4 • Promote Market TransformationStep-5 • Provide More IncentivesStep-6 • Raise the Bar Again!Step-7 •Mandate!Step-8
- 11. 10 “Green buildings offer value that extends well beyond the standard measures of profit and cost savings”
- 12. 11 Green Building Cost • Green buildings cost slightly more than conventional buildings • Estimates range from: 2% to more than 5% The Cost of Green: Source: The Cost of Green Revisited – Davis Langdon Location. Baseline. Values. Climate. Timing Size Scope. Source: World Business Council for SD
- 13. 12 In a survey by the U.S. General Services Administration, it was found that green buildings, when compared to conventional buildings, have: 13% Lower Maintenance Costs 26% Lower Energy Usage 27% Higher Building User Satisfaction 33% Lower CO2 Levels Green Building Advantages… Source: U.S. General Services Administration
- 14. 13 Green Building Advantages… Source: USGBC Better health Greater comfort Lower utility bills Less maintenance Lasting value!
- 15. 14 Mitigate Cost! Source: USGBC “GREEN” RFP’s & Contracts 3% More During Design Saves 10% In Construction. Integrated Design Team. Involve The Contractor Early. Hire the (MEP) Firm at the Beginning. Recognize that Green is Good Practice. Invest in a Good Energy Model. Standardize the Layout of Similar Spaces. Use Daylighting Well-insulated Building Envelope. Sustainable Projects Cost Less than Expected. If it is Mandatory, then it is not Additional Cost! Source: Managing the Cost of Green Buildings
- 16. 15 Adding Value Source: USGBC Building Knowledge: Enhancing the basis of decision-making to include techniques and expertise that bring new insights to design through: •LocalContext •BroadExpertise •LifeCycle Costing •Modeling •LifeCycle Assessment Integration: Developing challenging performance goals and viewing the project as an integrated system using:•BuildingEnv. Assessment Methods •GoalSetting •Design Charrettes Verification: Ensuring that buildings perform as closely as possible to that anticipated by undertaking: •3rdParty Certification •Commissioning •Post-Occupancy Evaluation Source: BUILDING GREEN, Adding Value Through Process
- 17. 16 “Green Building requires a change in the culture of building design & construction, so that alternative strategies can be considered and increased performance and value can be achieved.”
- 18. 17 Variation in MEP Requirements •Leads to Under-Performing and Over-Priced Buildings •Applying Safety Factors to Those Assumptions •“Rule-of-Thumb” Assumptions – No Actual Performance Information Assumes High-Performance Commissioning Energy Modeling Building Information Modeling (BIM) High-Performance Design Tools Source: Integrative Design – Building Momentum Group
- 19. 18 Variation in MEP Requirements Redefinition of Priorities Creation of Improved Forms of Participation and Communication Shift in the Mindsets and Patterns of all the participating professionals Establish New Working Relationships , Build Knowledge, and Form Consensus. Modifying the building design & construction process involves:
- 20. 19 Variation in MEP Requirements • Site Location/ Site Orientation Building Site Selection • Building Footprint • Roof/ Walls/ Floors/ Slabs • Doors/ Windows/ Skylights Building Envelope • Use Efficient Plumbing Fixtures • Use non-potable water • Install sub-meters Indoor Water • Use Native and Adaptive Plants • Use Xeriscaping • Use Efficient Irrigation systems • Use Non-Potable Water Outdoor Water • Lighting Load/ Appliance Load/ Occupancy Load Building Internal Load • Ventilation System / Thermal Comfort HVAC Systems and Equip. • Control System/ Control Strategies Controls • Photovoltaic Cells • Solar Panels • Ground source Heat Pumps • Wind • River/ Ocean Renewable Strategies • Preconstruction Commissioning Commissioning
- 21. Consider all aspects of the building simultaneously Decide on design goals as early as possible "Right Size" HVAC systems to ensure efficient operation Consider part- load performance when selecting equipment Shift or shave electric loads during peak demand periods Plan for expansion, but don't size for it Commission the HVAC & other systems Establish an Operations and Maintenance (O&M) Program Source: Harvard University Office of Sustainability Green Building Resource 20 Make your MEP Green!…
- 22. 21
- 23. Based on: Harvard University Office of Sustainability Green Building Resource 22 10 Commandments For a Sustainable MEP… Source: USGBC • assess actual building program • consider opportunities to share resources • work towards a common goal to create a successful project. 1. Evaluate Program Needs: • Set measurable targets for energy, water, daylight, etc. • require reporting on progress towards goals • consider financial incentives 2. Establish Measures for Success: • Include design charettes in Concept and Schematic Design • Follow an integrated approach 3. Harness Available Expertise: • Question the “rules of thumb” or “business as usual.” • look to alternatives to common strategies • develop solutions appropriate for their specific project. 4. Ask Why: • Include energy modeling in all Design stages • Conduct multiple parametric runs • evaluate major design decisions. 5. Model Alternative Systems:
- 24. Based on: Harvard University Office of Sustainability Green Building Resource 23 10 Commandments For a Sustainable MEP… Source: USGBC • Identify & include operations representative in all meetings • Provide comprehensive preventive maintenance plan • Ensure effective training of O&M staff. 6. Design for O&M: • Engage a CxA in Schematic Design • Include thorough M&V of building performance • Plan for continuous Cx. 7. Commission throughout Project: • Identify LCC requirements early in design • Require LCC results before making major design decisions • Utilize LCC when evaluating systems 8. Consider LCCA: • Identify M&V requirements for the project • Include operations staff in design process • Include controls vendor in design process. 9. Measure and Verify Performance: • Provide training • High Performance Building Resource. • Collect and share documentation, • Success stories. 10. Utilize Lessons Learned:
Editor's Notes
- The extent of increased initial outlay, if any, is influenced by: The level of performance targeted contextual factors such as: the maturity of the local green building market the openness of the client to alternative solutions, the size and type of project the experience and creativity of the design team. Green building strategies to lessen the economic impact: Write RFPs and contracts that clearly describe green building requirements. Invest an additional 3% of total project costs during design to yield 10% savings in costs of construction. Implement an Integrated Design team to encourage creative solutions. Involve the contractor early in the design process. Hire the mechanical electrical and plumbing firm (MEP) at the beginning of design Recognize that green is good practice—and as such should not be considered separate from standard construction. Spend money on a good energy model and use it to explore first cost and operating cost savings strategies. Standardize the layout of similar spaces. Use daylighting and do not ignore the value of a well-insulated building envelope. Recognize that current LEED projects cost less than expected. Most Certified and Silver projects are built with little to no additional cost. Identify utility, state, and other funding sources to help offset investments in energy efficiency, water efficiency and renewables. Additional time invested early in the process to allow for extra design meetings, materials and systems research, and modeling of alternative design strategies can pay off significantly by: avoiding costly mistakes and time expenditures later in the process achieving significant efficiencies in operating costs.
- The approaches in Building Knowledge and Integration are typically embraced directly within an Integrated Design Process, while those in Verifi cation offer a means to demonstrate and communicate the success of that effort. Many of the techniques and processes situated within these domains are also clearly inter-related and several are valuable throughout the entire design process. Building Green: Adding Value Through Process presents the key components, benefi ts and potential pitfalls associated with each of the techniques and processes individually and, where appropriate, additional links and resources are highlighted