Environmental Principles

Transcription

1 Environmental Principles The Ownership group and lead consultants commitment to sustainability has been a driving force for its design. The project will achieve, per council policy for rezoning, an equivalency of LEED Gold (70 points) with an objective to achieve a 40% reduction in energy consumption from 00 levels, one stormwater and one water efficiency point. This environmental mindset is in line with that of the Toyota Brand, whose flagship store will form a centre piece for the project. The design team is led by James Hancock, Architect and LEED Accredited Professional, who has been active in regional sustainable projects such as the Hotel Georgia Tower and the Langara Library. LEED Project Management is provided by Daniel Roberts of Kane Consulting, LEED Accredited Professional, CaGBC Faculty and CaGBC Technical Advisory Group (TAG) member. Mr. Roberts has been a key team member in BC s most prominent sustainable projects including Dockside Green in Victoria and the South East False Creek Athletes Village (Millennium Water) in Vancouver. Integrated Sustainable Approach Sustainability has been a key consideration right from the initial concept with the early engagement and participation of key team members including the Mechanical Engineer, Energy Modeler and Sustainability Project Manger. Sustainability will continue to be a focal point throughout design and construction with the ultimate goal of providing a long lasting sustainable community for people to live and work. The next phase of design will include the engagement of BC Hydro and participation in their New Construction Program. The mandate of the program includes resources and technical assistance to developers and the design community to create high-performance, energy efficient buildings. The project team will continue to utilize resources such as the BC Hydro New Construction Program to help further optimize the passive and active strategies of the development. Transportation: The project will have a strong focus on alternative transportation from alternative fuel vehicles charging stations and co-op vehicles. Pedestrian opportunities for living and working downtown will be maximized by providing significant infrastructure for bicycle storage, public access, and smart location close to multiple bus routes and walking distance to many amenities within the downtown core. Key Features: LEED-NC 009 Gold Targeted Strategic location adjacent to multiple transit routes and City Bike Network Passive Architectural Strategies to reduce Heating and Cooling Loads Individual façade treatments per solar exposure Building envelope design with focus on energy conservation Energy Sharing through Heat Recovery Significant reduction in storm water runoff Green Roofs and Urban Agriculture including the use of native and adaptive vegetation Domestic potable water reduction through efficient fixtures Significant use of local manufactured materials Extensive diversion of construction waste through a Construction Waste Management Plan Retention of Toyota Dealership downtown reduces car trips out of town for vehicle servicing March nd 0 Environmental Principles 8

2 The Toyota Dealership The three storey Toyota Dealership will use a central elliptical atrium configured to create the opportunity for natural ventilation. Warm air will be passively drawn from the sales floors to the roof through stack effect; while also increasing daylight to the central darker regions of the plan below. The outward leaning form of its curtain wall façade will reduce solar heat gain and reduce the reliance on interior back-lighting as the leaning glass will increase visibility from the street. The design team is investigating additional strategies to decrease solar heat gains such as external shading devices and glass fritting. On the roof we propose an active area with significant greenery, which will cool the roof and shade the atrium skylight. GREEN ROOF DAYLIGHTING FROM GLASS & INTERNAL ATRIUM LEANING GLASS REDUCES SOLAR ANGLE OF INCIDENT NATURAL VENTILATION & COOLING THROUGH STACK EFFECT CURRENT TOYOTA SURFACE PARKING & CAR STORAGE MOVED UNDERGROUND March nd 0 Environmental Principles 9

3 The Office Building Facade Design The West & East façades of the Office feature a decorative frit pattern imbedded into the glass. This lace motif will decrease solar heat gain while retaining maximum view out. The South façade has louvers on every floor slab. Daylighting clear floors with floor to ceiling glazing and a relatively shallow office floor plate will allow daylight to enter all parts of the building. The narrow footplates will also create a sense of connection to the external environment, creating a more livable and workable environment. Heating & Cooling We will be exploring the use of Geo-exchange Fields to store heat under the buildings, an energy highway to transfer waste heat from air conditioning to building heating and domestic hot water systems, heat recovery from the office ceiling plenum, heat recovery from restaurant/automotive/office exhausts, solar heating panels, heat recovery from sewage, variable speed drives on all major heating and cooling systems, 9 SEER air conditioning units and natural ventilation for cooling of atrium and high ceiling areas. Key energy concepts will be confirmed through detailed energy modeling through the BC Hydro New Construction Program. Green Roof A green roof will cover a percentage of the main mechanical level, with a large canopy to further shade the roof activities and decrease its overall albedo and heat island effect. The green roof will also be a key component in reducing the developments impact on local storm sewer infrastructure by significantly reducing stormwater runoff compared to existing conditions. The green roofs and accessible areas will also create a retreat within the development; a place where the residents and office employees can enjoy breaks away from the noise and bustling city life around the development. March nd 0 Environmental Principles 30

4 The Towers The showroom at grade of Tower A will be for Toyota s new Sub-compact brand Scion, a compact fuelefficient vehicle. From the lane a surface parking zone will be retained, in Tower C; containing 6 Toyota fuel efficient vehicles for the project s Car Share program. The outward leaning façade will decrease solar heat gain, and a green roof with low albedo surface materials will decrease heat island effect and interior heat gain. To provide shade from the heat intensive western sun path and further reduce solar heat gain, the South Façade will be equipped with large horizontal overhangs; the East and West feature façade will be configured in a staggered grid, and the organic pattern will also provide an opportunity to decrease the elevations overall quantity of glazing. Conversely the lower units gain the benefit of increased privacy by the smaller quantity of vision area. This punched façade will also act as a heat sink, drawing in heat during the day and releasing it to the interior during the night. Overall we see this as a whole development, which will provide a place to live, work and play. Residents, guests & workers can use the Hotel facilities, Daycare, and amenities. By having such an extensive mixed-use development, the overall number of car trips can be greatly reduced in the City, decreasing congestion and increasing the standard of living for both those within the building and the surrounding neighbourhood. March nd 0 Environmental Principles 3

5 LEED Checklist Certified 40 to 49 points Silver 50 to 59 points Gold 60 to 79 points P Sustainable Sites Possible Points 6 Y Prereq Construction Activity Pollution Prevention Credit Site Selection 5 Credit Development Density and Community Connectivity 3,5 Credit 3 Brownfield Redevelopment 6 Credit 4. Alternative Transportation, Public Transportation Access 3,6 Credit 4. Alternative Transportation, Bicycle Storage & Changing Rooms 3 Credit 4.3 Alternative Transportation, Low-Emitting and Fuel-Efficient Vehicles 3 Credit 4.4 Alternative Transportation, Parking Capacity Credit 5. Site Development, Protect and Restore Habitat Credit 5. Site Development, Maximize Open Space Credit 6. Stormwater Design, Quantity Control Credit 6. Stormwater Design, Quality Control Credit 7. Heat Island Effect, Non-Roof Credit 7. Heat Island Effect, Roof Credit 8 Light Pollution Reduction 5 4 Water Efficiency Possible Points 0 Y Prereq Water Use Reduction Credit Water Efficient Landscaping, Reduce by 50%, No Potable Water Use,4 Credit Innovative Wastewater Technologies 3 Credit 3 Water Use Reduction, 30%, 35%, 40% Reduction Energy and Atmosphere Possible Points 35 Y Prereq Y Prereq Y Prereq 3 5 Credit Optimize Energy Performance -9 7 Credit On-site Renewable Energy -7 Credit 3 Enhanced Commissioning Credit 4 Enhanced Refrigerant Management 3 Credit 5 Measurement & Verification 3 Credit 6 Green Power Y Legend LEED Analysis by: Kane Consulting Total Project Score & Rating Fundamental Commissioning of Building Energy Systems Minimum Energy Performance Fundamental Refrigerant Management Credit Complete Credit Incomplete Not Attempting Prerequisite (Must Achieve) GOLD Possible Points 0 Platinum 80 or more points 6 7 Materials and Resources Possible Points 4 Y Prereq Storage and Collection of Recyclables 3 Credit. Building Reuse, Maintain Existing Walls, Floor and Roof -3 Credit. Building Reuse, Maintain Interior Non-Structural Elements Credit Construction Waste Management, Divert 50%, 75% - Credit 3 Materials Reuse, 5%, 0% - Credit 4 Recycled Content, 0%, 0% - Credit 5 Regional Materials, 0%, 30% - Credit 6 Rapidly Renewable Materials Credit 7 Certified Wood Indoor Environmental Quality Possible Points 5 Y Prereq Minimum IAQ Performance Y Prereq Environmental Tobacco Smoke (ETS) Control Credit Outdoor Air Delivery Monitoring Credit Increased Ventilation Credit 3. Construction IAQ Management Plan, During Construction Credit 3. Construction IAQ Management Plan, Before Occupancy Credit 4. Low-Emitting Materials, Adhesives & Sealants Credit 4. Low-Emitting Materials, Paints and Coatings Credit 4.3 Low-Emitting Materials, Flooring Systems Credit 4.4 Low-Emitting Materials, Composite Wood and Agrifiber Credit 5 Indoor Chemical & Pollutant Source Control Credit 6. Controllability of Systems, Lighting Credit 6. Controllability of Systems, Thermal Comfort Credit 7. Thermal Comfort, Design Credit 7. Thermal Comfort, Verification Credit 8. Daylight & Views, Daylight 75% of Spaces Credit 8. Daylight & Views, Views for 90% of Spaces 6 Innovation & Design Process Possible Points 6 Credit. Innovation in Design: Exemplary Performance SSc7. Credit. Innovation in Design: Exemplary Performance Materials Credit.3 Innovation in Design: Green Building Education Credit.4 Innovation in Design: Green Cleaning Program Credit.5 Innovation in Design: Low Mercury Lighting Credit LEEDª Accredited Professional 4 Regional Priority Possible Points 4 Credit Durable Building Credit. Regional Priority Credit. Regional Priority Credit.3 Regional Priority March nd 0 Environmental Principles 3