Environmental Principles

Transcription

1 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 (63 points) with at least 6 energy points, 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 2009 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 35

2 The Toyota Dealership As the flagship store for Toyota in Vancouver, the showroom will be also be a showcase of green design with reductions in energy consuption and a conection to the energy highway between all components of the project 141 KWH/M 2 /YEAR 36

3 The Office Building Facade Design spandrel frit and high performance clear glass are used along with shading devices to reduce solar heat loads while maintaining maximum daylght. Daylighting 12 clear floors with floor to ceiling glazing and a relatively shallow office floor plate will allow daylight to enter all parts of the building. Heating & Cooling We will be exploring the use of Geothermal Fields, heat recovery in the office ceiling Plenum, office air heat recovery and sanitary heat recovery. 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. 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. 121 KWH/M 2 /YEAR 37

4 Design Strategies The Towers RETAILERS K 5 11 The showroom at grade of Tower A will be for Toyota s new Sub-compact brand Scion, a compact fuelefficient vehicle. A large grocery store under Tower C will allow residents to shop locally and not drive to grocery stores further out of the neighbourhood. Passive solar design Individual facade treatments per solar exposure 40% - 50% Energy reduction below 2010 requirements Energy highway connecting all parts of project for energy exchange between the different uses Automatic and manual controls for daylighting High performance glazing Limit of approximately 50% vision glass for all buildings Higher insulation levels for walls and roofs W H 2 /M /Y EA R FACADE 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. 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. 38

5 Key Features The Podium Outward sloped glazing (5-10% cooling Horizontal shading fins (5-15% cooling Vertical shading fins (15-30% cooling Daylight sensors in all window adjacent locations (15-45% lighting energy reduction) Fritted glass on non-vision component of glazing to reduce solar glare Natural ventilation in the form of operable windows & passive vents Access to landscaped outdoor amenity area for all users Passive design elements improve occupant comfort Mechanical systems Four pipe fan-coil utilizing up to 30% outside air for free cooling Central washroom exhaust system with heat recovery and rejection to building energy highway Central plant to consist of energy highway water loop connecting all building heating /cooling loads to enable easy exchange of waste heat from cooling to building heating and domestic hot water needs Individual energy metering monitored/measured by building ddc system. K 1 12 W H 2 /M /Y EA R 39