Case Study 3: Minto Roehampton, Toronto, Ontario

Type: Residential

Location: Toronto, OntarioApproximate gross area: 9,666 m2
Number of floors above ground: 14Occupancy: Spring 2007 with 148 rental suites 
Design population: 200
Annual Greenhouse Reductions: 582 tonnes

Architect: MintoUrban Communities Inc.
Energy analysis: Minto Energy Management
Contact:
Lyle Scott, Manager, Minto Energy Management

Members of assessment teams:
Doug Webber, Halsall Associates; Woytek Kujawski, CMHC; Jamie Meil, Athena SMI; Jiri Skopek, EDC Canada;

General Description
MintoRoehampton is a 16 storey apartment located in the heart of midtown Toronto within walking distance of countless restaurants, retail outlets, and public transportation routes. Bicycle parking has been provided for more than half of the occupants and a hybrid car sharing program will make it easy for residents to reduce their personal carbon footprint.

Envelope construction:
     - fenestration-to-wall ratio: 66%
     - opaque wall RSI value (m2 * C/W): 15.80
     - window U-value (W/m2*C)/ 2.78
     - window SHGC: 0.47


The SBTool results (from 0 to 5)


The SBTool results (from 0 to 5)


MAIN SUSTAINABILITY FEATURES

Sustainable Design Principles

  • Respect for the site for the site:

    • Minimize impact of project construction

    • Preserve neighborhood character

    • Protect and enhance existing ecosystems

  • Use of Site Systems:

    • Incorporate the natural operating systems occurring at the site:

      • Water

      • Light

      • Air

      • Heat

  • Architectural Integrations:

    • Integrate sustainable components into the architectural expression of the building.

Sustainable Site Design Strategies

  • Utilize heat from the ocean

  • Protect existing native trees, remove invasion species

  • Remove contaminated soils

  • Take advantage of sea & land breezes

  • Use sun for day lighting& to generate electricity

  • Preserve existing character house and protect existing ornamental garden

  • Protect marine environment

  • Harvest rainwater for non-potable applications

Energy Efficiency Strategies

  • Ocean based geothermal system coupled with in-floor radiant heating

  • Exhaust air heat recovery

  • Photovoltaic system provides 20% of the building’s energy requirements

  • The exterior wall assembly has been engineered to optimize thermal performance and durability

  • Lighting density is 9.3 w/m2

  • Exterior sunshades control direct solar radiation

  • Open atrium promotes natural ventilation

  • Ventilation system consists of 100% outside air system with high induction diffusers

  • Occupancy demand ventilation control including carbon dioxide sensors

Building Envelope Design

  • Each façade designed in response to its orientation: sunshades provided on the South and East facades for passive shading.Continuous glazing on the North façade takes advantage of the expansive views

  • Exterior sunshades limit amount of direct sun into the building and help prevent heat gain in summer

  • The exterior wall assembly engineered to minimize air leakage and heat losses

  • Materials selected to resist the marine environment

  • Assemblies designed to be easily maintained and replaced

Interior Environmental Quality

  • Design of building encourages natural ventilation

  • Daylight is the primary means of illumination during daytime hours

  • Building designed to place all work spaces adjacent to opening windows

  • Workstations & offices furnished with lighting, temperature and air controls

  • Minimal finishes and materials used in the interior of the building

  • Finishes, materials and furniture selected on basis of low VOC emission levels

  • Green housekeeping products and procedures implemented

  • Ventilation system supply air delivers 100% outdoor air

Environmental Rating

  • 75.5% Energy Reduction over MNECB Reference Building (> 12 LEED points)

  • Green House Gas Reduction = 32.3 tonnes/year

  • 60% Potable Water Reduction

  • 98% Reduction of potable water use for sanitary waste conveyance

  • Renewable Energy photovoltaic panels provide 20% of the building’s energy requirements

  • The building has been designed to be suitable for current climate conditions with no mechanical cooling implemented at present

  • The ocean loop/heat pump system has been designed to be capable of providing cooling to the radiant floor system if necessary

  • Project incorporates only off-the shelf products, proven technology and local design& construction resources. No emerging or prototypical technologies used.

  • More information about the building on websites of:
    Architects Larry McFarland Architects Ltd
    Canadian Architect