GREEN BUILDINGS AND GREEN CITIES RWANDA GREEN GROWTH WEEK SUSTAINABLE BUILT ENVIRONMENT By Eng. Harouna/BRIA-DM December 8, 2017
Content of the Presentation PART ONE: GREEN BUILDINGS -What is a green building? -Why Green buildings? -Green building in Rwandan context -Difference between Min. Compliance & Rating System? -Minimum compliance indicators PART TWO: GREEN CITIES -Definition of a Green City -Indicators of a green city -Illustrations of elements of a green city - Illustration of problems if we don’t go green
PART ONE GREEN BUILDING Is it a green colored building?
What is a green building? Is it a green coloured building? Is it a green house? Is it the one covered by grass? • Globally ‘green’ refers to – Pursuit of an activity that has positive impact on the environment, leading to sustainable development. Hence the term ‘green building’ *Images are for representation purpose only
Why Green buildings? Increasing Urbanization from18% to 35% (Vision 2020) -75% of building stock yet to be built (UN-Habitat) Increased resource consumption -Energy, Water, Materials Increasing CO 2 emissions from building sector Policy context -National Green Growth and Climate Resilient Strategy 2011 -GoR & GGGI National Roadmap for Green Secondary City Development 2015 -Rwanda Building Code 2015 -NST1 *Images are for representation purpose only
Green building in Rwandan context can be defined as the one which: Optimize use of developable land (Densification) Take advantage of the comfortable ambient weather (Upland climate) Maximize use of sustainable & locally manufactured building materials (Made in Rwanda & Rwandan Character) Reduce Energy & Water consumption Provide superior Indoor Environmental Quality for occupants Protect environment and promote biodiversity . . . *Images are for representation purpose only
Min. Compliance vs Rating System? Min. Compliance System Rating System Mandatory Standard Voluntary Standard Enforced by Govt. Agencies Promoted by Non-government organizations/ Industry Associations Example: Building Example: LEED promoted by US Green Building Council, Indian Construction Authority, Green Building Council (IGBC), Green Star in Australia/South Singapore Africa, EDGE by International Finance Corporation, DGNB in Germany, BREEAM in UK etc. Ensures a degree of Choice of the building owner to pursue. Although few Govts. sustainability in majority of provide incentives to encourage adoption buildings Simple and easy to understand Challenging features with a need to involve specialized professionals. For Example: Energy Modelling, Daylighting simulation etc. Building Permit Rating Certificate awarded to projects. For example: Platinum, Gold, Gold Plus, Silver, Certified; 6 star, 5 star, 4 star;
The Five Modules Energy Efficiency Water Efficiency Environmental Protection Indoor Quality Other Green Features
Proposed Applicability All new Category 3 & 4 buildings comprising of Commercial Buildings Public administrative and institutional buildings Social, cultural and assembly buildings Health facilities Educational buildings *Images are for representation purpose only
Features of min. green building compliance Min. Compliance Modules Indicators Points available achieved Design + On-site Verification to ensure compliance
Legal basis for Green Building Min. Compliance Few Prerequisites addressing National Priorities Non-negotiable and every building has to comply Indicators aligned with National policies For Ex: Locally manufactured materials, Densification etc. Easier enforcement of building code For Ex: Noise limits Optional Indicators (Limited in each module). Ex: Innovation Reuse of treated wastewater Use of off-grid energy/Solar panels
Module 1: Energy Efficiency
Module 1: Energy Efficiency S.No. Indicator 1.1 Building Envelope: Air-conditioned Space 1.2 Building Envelope: Non Air-conditioned space 1.3 Thermal Transmittance (U- Value) for roof 1.4 Air Conditioning System 1.5 Natural Ventilation 1.6 Daylighting 1.7 Lighting Efficiency 1.8 Ventilation in Carparks 1.9 Ventilation in Common Areas 1.10 Lifts and Escalators 1.11 Energy Efficient Practices 1.12 Renewable Energy 1.13 Solar Hot Water Systems Energy Metering 1.14 *Images are for representation purpose only
Module 2: Water efficiency
Module 2: Water Efficiency S.No. Indicator 2.1 Efficient Plumbing Fixtures 2.2 Rainwater Harvesting 2.3 Waste water Treatment 2.4 Treated waste water reuse 2.5 Water Metering *Images are for representation purpose only
Module 3: Environmental Protection
Module 3: Environmental Protection S.No. Indicator 3.1 Sustainable Construction & Materials 3.2 Greenery Provision 3.3 Environmental Management Practices 3.4 Refrigerants 3.5 Segregation of Waste, Post-occupancy 3.6 Construction Waste Management 3.7 Heat Island Reduction Soil Erosion & Sedimentation Control 3.8 *Images are for representation purpose only
Source: LBNL Heat Island Group
Module 4: Indoor Environmental Quality
Module 4: Indoor Environment Quality S.No. Indicator 4.1 Minimum Fresh Air Ventilation - Mechanically ventilated spaces 4.2 Thermal Comfort - Mechanically ventilated spaces 4.3 Noise Level Low VOC Paints & Adhesives 4.4 *Images are for representation purpose only
MODULE 5: INNOVATION AND OTHER GREEN FEATURES
Module 5: innovation and Other Green Features S.No. Indicator 5.1 Innovation 5.2 Optimum Use of Developable Land 5.3 Universally Accessible Building *Images are for representation purpose only
Way Forward Technical committee meetings Finalize requirements, tools, scores etc. Enforcement Procedures to be finalized Validation Integration in BPMIS Capacity building of stakeholders Proposed Timeline Validation – Expected period 3 rd & 4 th Quarter of F.Y. 2017-18 Adoption & Enforcement – End of F.Y. 2017-18
PART TWO GREEN CITIES Does a set of green buildings make a green city?
Definition of a Green City “Green cities have clean air and water and pleasant streets and parks. Green cities are resilient in the face of natural disasters, and the risk of major infectious disease outbreaks in such cities is low. Green cities also encourage green behavior, such as the use of public transit, and their ecological impact is relatively small ” (Kahn, 2006); SDG Goal 11: Make cities and human settlements inclusive, safe, resilient and sustainable National Urbanization Policy: Densification and Conviviality Pillars
Indicators of a Green City Green City Indicators Green City Indicators Solid Waste Management Eco-vision of the city Waste water treatment & Compact City Planning / reuse Densification Protection of eco- % Affordable Housing units sensitive zones % Green Buildings % Public Green and open Urban Heat Island Mitigation spaces, Accessibility % Employment Opportunities and employability
Indicators of a Green City Green City Indicators Green City Indicators Universally Accessible Resource efficient city city Air Quality Integrated Utility Network Innovation ICT Responsible consumption and Sustainable Mobility Lifestyle Public Transport, Gender and Pedestrian, Bicycle Inclusiveness Climate & disaster resilience
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Thank you!
References 1. Rwanda Minimum Compliance Green Building Indicators- Draft 2. Indicators for sustainable cities-European Commission, November 2016 3. How green is a “Green City”? A review of existing indicators and approaches: Institute for Advanced Sustainability Studies (IASS) Potsdam, December 2016 4. Rwanda Building Code 5. Urban Planning Code 6. Rwanda Green City Toolkit, 2017
Email your inputs and comments: Harouna: harouna.nshimiyimana@rha.gov.rw Dheeraj: arrabothu.dheeraj@gggi.org Yves: ysangwa@gmail.com Farizan: farizan@greenaconsultants.com
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