parkdale united church foundation green phoenix. parkdale united church foundation design charrette...
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Parkdale United Church Foundation
• Design charrette January 2005• Integrated design process: spring
and summer 2005• Community consultation
committee 2005-2006• CBIP review 2006• 3rd party commissioning
Design Process
Parkdale United Church Foundation
• Replace aging building components.
• Reduce utility costs to keep rents affordable.
• Improve air quality and temperatures.
• Reduce environmental footprint.
• Provide 21 new housing units and new amenity spaces.
• Architectural landmark
GoalsProject
Parkdale United Church Foundation
• 11 storey high-rise, 5,116 s.m• 137 apartments, most 225 s.f. bachelor• Heating: electric baseboards• Domestic hot water: 600K BTU – 4 power-
vented boilers• Exhaust air: kitchen/bathroom fans• Make-up air: 400K BTU gas rooftop unit• Windows: aluminum sliders• Envelope: exposed slab edges & walls of
plaster, 1 1/2” foam board insulation, and 6” bricks
The existing building
Parkdale United Church Foundation
• Fan-coil units replace electric baseboard heating & window AC units
• Geothermal heating & cooling plant for 85% of peak loads
• Solar thermal array (40 panels) to pre-heat city water
• High-efficiency boilers for backup and peak loads
• Rooftop ERV for central exhaust from apartments and make-up air to corridors
Sustainable Design
Parkdale United Church Foundation
• New building envelope: 4” Roxsul insulation and field-applied stucco
• Windows: fibreglass frames, low-E argon thermal units
• Sub-metering of hydro to monitor use• Energy-efficient lighting and appliances• Building automation system• Extended commissioning by 3rd party• Off-site performance monitoring
Sustainable Design
Parkdale United Church Foundation
$0
$5,000,000
$10,000,000
$15,000,000
50 year life cycle costs: 2008 - 2057
Base Case Conventional Geo/Solar Hybrid
Maintenance
Utilities
Capital Costs
Life cycle cost analysis
Parkdale United Church Foundation
Mechanical: geothermal wells, heat pumps, distribution, fan coils& controls, boilers, ERV
$2,280,000
Solar wall $135,000
EIFS and windows $800,000
Building automation, sub-metering, commissioning
$135,000
Soft costs (design, contract admin., legal, organizational)
$250,000
TOTAL $3,600,000
Costs
Parkdale United Church Foundation
20%35%
17%0%
28%
Infrastructure Ontario Loan
Energy Efficiency Office Loan
Reserves
Grants (HRSDC, NRCan, Trillium,TAF)
Revenue
Parkdale United Church Foundation
• Benefits of the integrated design process
• Consultants with specific expertise, capacity, references
• 3rd party review of the design
• Engagement of all stakeholders: tenants, board members, broader community & agencies
• Contractors with experience working in occupied buildings, and the capacity to manage the complexities of a retrofit
• Commissioning process
What We Learned
Parkdale United Church Foundation
Thanks & Acknowledgements• City of Toronto: Affordable Housing Office, Social
Housing Unit, Energy Efficiency Office, Better Buildings Partnership, Toronto Atmospheric Fund
• Infrastructure Ontario• Social Housing Services Corporation• Canada Mortgage & Housing Corporation• Trillium Foundation• United Church of Canada• MMAH