Post on 29-Nov-2014
description
Jeff Armstrong - DAC International Division
Kott Group
Cold Climate Social Housing - a case study
• 2 million km2
• 26 communities
• 30,000 people
• Iqaluit - pop: 7,000
• No roads
• 2 million km2
• 26 communities
• 30,000 people
• Iqaluit - pop: 7,000
• No roads
Approximately 8,500 dwellings
80% are public, gov’t staff or rent subsidized housing
Nearly half of all houses are below Canadian housing standards
Current shortfall of 3,000 units
Average annual new-build - 200 units
Funding committed for 2012 - 2013 - $0.00
The scale of the housing problem...
Average house size - 93 sq. m.
Median number of people in a home is 6
Half of Nunavut’s homes are overcrowded or need serious repair.
4% of the population does not have a permanent home and bounce between homes often sleeping in shifts on couches, in kitchens, dining rooms or hallways
Tuberculosis rate 62 times the Canadian average
Highest birth rate & lowest life expectancy in Canada
Health and social impacts...
“There is a strong correlation between the state of housing in Nunavut and domestic violence, mental health problems, substance abuse, poor academic performance, respiratory ailments and the spread of infectious diseases”
Nunavut 10 year Inuit Housing Action Plan
".…the conditions in far too many Aboriginal communities can only be described as shameful. This offends our values. It is in our collective interest to turn the corner. And we must start now."
The Right Honourable Adrienne Clarkson - Speech from the Throne, February 2, 2004
The bottom line...
The Challenge
To provide a high performance building enclosure system that is easy to put up quickly in Northern conditions at a reasonable cost.
Nunavut Housing Corporation RFP - June 2009
Nunavut Housing Corporation RFP - June 2009
StructureThermal ControlVapour ControlAir Leakage Control
Nunavut Housing Corporation RFP - June 2009
StructureThermal ControlVapour ControlAir Leakage Control
Plywood skins
R - 50 Floor, R - 40 Walls, R - 50 Roof
Air leakage control without caulking or spray foam - 0.5 AC/h @ 50 Pa
Nunavut Housing Corporation RFP - June 2009
Structural insulated panels
Blower Door Testing
R-2000 - 1.5 ac/h@ 50 Pa
PassivHaus - 0.6
Nunavut Housing - 0.5
Plywood skins
R-50 Floor, R-40 Walls, R-50 Roof
Air leakage control without caulking or spray foam - 0.5 AC/h @ 50 Pa
Capable of being handled by hand or machine
Designed to meet highest wind and snow loads in Nunavut
“Closed Cell” foam (vapour control)
Thick enough to incorporate structural elements
Nunavut Housing Corporation RFP - June 2009
Structural insulated panels
Project TimelineReceived RFP - June 26 / 09
Tender closed in Iqaluit - July 17
Tender Award - August 6
D1 erected at Kott Yard - September 14 - 18
D1 erected in Morrisburg - September 21 - 26
Authorization to Proceed - October 30
D2 erected at Kott Yard - December 9 - January 10
Production Starts - January 4
Crates to Port - April 3 - July 15
Total Production: 15,336 panels; 1,420 crates
5 24 3 16
C B A
1 BUILDING SECTION 2 BUILDING SECTION
ASSEMBLY SCHEDULE3
ROOM FINISH SCHEDULE4
A4
BUILDING SECTIONS,ASSEMBLY &
FINISH SCHEDULES
PH. (867) 6690058
P.O. BOX 1525YELLOWKNIFE, N.W.T.
FAX.(778) 2850033
email: tjtech@shaw.caweb site: tjtechnical.ca
X1A 2P2
08220
3 BEDROOM SINGLEFAMILY DWELLING
AMARUK
Grade Insulated floorCrawlspace
5 24 3 16
C B A
1 BUILDING SECTION 2 BUILDING SECTION
ASSEMBLY SCHEDULE3
ROOM FINISH SCHEDULE4
A4
BUILDING SECTIONS,ASSEMBLY &
FINISH SCHEDULES
PH. (867) 6690058
P.O. BOX 1525YELLOWKNIFE, N.W.T.
FAX.(778) 2850033
email: tjtech@shaw.caweb site: tjtechnical.ca
X1A 2P2
08220
3 BEDROOM SINGLEFAMILY DWELLING
AMARUK
Grade Insulated floorCrawlspace
CONSTRUCTIONNORTH
A
B
C
2 653 41
CONSTRUCTIONNORTH
61
A1 A1
2 53 4
A2
FLOOR PLANSPH. (867) 6690058
P.O. BOX 1525YELLOWKNIFE, N.W.T.
FAX.(778) 2850033
email: tjtech@shaw.ca
T.J. TECHNICAL SERVICES
web site: tjtechnical.ca
X1A 2P2
08220
3 BEDROOM SINGLEFAMILY DWELLING
AMARUK
Solution
R-40 Walls (12”)R-50 Floor (14-5/8”)R-50 Roof (14-5/8”)
Critical month ACH (Natural) 4.43 0.50Critical month ACH (Total) 0.486 0.256
ANNUAL FUEL CONSUMPTION SUMMARYOil (Imp. Gal) 810.6 387.5Electricity (Mil. Btu) 8767.4 9092.5
ESTIMATED FUEL COSTS (Dollars)Oil 1614.4 834.3Electricity 909.5 941.2
Total 2523.9 1775.4ANNUAL SPACE HEATING SYSTEM PERFORMANCESpace Heating Load (Mil.BTU) 93.8 34.1Furnace Input (Mil.BTU) 111.0 40.7Pilot Light (Mil.BTU) 0.0 0.0Indoor Fans (Mil.BTU) 0.0 0.0Heat Pump Input (Mil.BTU) 0.0 0.0Total Input (Mil.BTU) 111.0 40.7System COP 9.8 7.5
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HOUSE DATACOMPARISON REPORT
HOT2000Natural Resources CANADA
Version 10.31
Nunavut-MNECCH Nunavut-SIP
AIR LEAKAGE AND VENTILATION SYSTEMSHouse Volume (ft3) 15931.0 15931.0
Envelope Surface Area (ft2) 3949.9 3949.9Natural Infiltration Rate (ACH) 0.285 0.032
Equivalent Leakage Area (in2) 115.7 13.1Central Ventilation Supply Rate (ACH) 0.040 0.270Central Ventilation Exhaust Rate (ACH) 0.040 0.270Other Supply Rate (ACH) 0.000 0.000Other Exhaust Rate (ACH) 0.000 0.000Seasonal HRV Efficiency (%) 59.0 57.7Gross Air and Vent. Energy (Mil.BTU) 44.5 32.1Vent. Elec. Load: Heating Hrs (Mil.BTU) 0.0 1.1Vent. Elec. Load: Non Htg Hrs (Mil.BTU) 0.0 0.0Net Air and Vent. Energy (Mil.BTU) 44.3 16.3
ANNUAL SPACE HEATING SUMMARYDesign Heat Loss (Watts) 39523 22648Gross Space Heat Loss (Mil.BTU) 129.5 63.3Sensible Occupancy Heat Gain (Mil. Btu/day) 2.40 2.40Usable Internal Gains (Mil.BTU) 27.0 24.8Usable Internal Gains Fraction (%) 20.9 39.1Usable Solar Gains (Mil.BTU) 8.7 4.4Usable Solar Gains Fraction (%) 6.7 7.0Vent. Electrical Contribution (Mil.BTU) 44.3 16.3Auxiliary Energy Required (Mil.BTU) 93.8 34.1SPACE + DHW ENERGY (Mil.BTU) 134.6 65.5R-2000 SPACE + DHW TARGET (Mil.BTU) 110.2 110.2
ENERGUIDE RATING (0 to 100) 76.2 86.1Air Change Rate at 50 Pa. 76.2 86.1
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HOUSE DATACOMPARISON REPORT
HOT2000Natural Resources CANADA
Version 10.31
Nunavut-MNECCH Nunavut-SIP
AIR LEAKAGE AND VENTILATION SYSTEMSHouse Volume (ft3) 15931.0 15931.0
Envelope Surface Area (ft2) 3949.9 3949.9Natural Infiltration Rate (ACH) 0.285 0.032
Equivalent Leakage Area (in2) 115.7 13.1Central Ventilation Supply Rate (ACH) 0.040 0.270Central Ventilation Exhaust Rate (ACH) 0.040 0.270Other Supply Rate (ACH) 0.000 0.000Other Exhaust Rate (ACH) 0.000 0.000Seasonal HRV Efficiency (%) 59.0 57.7Gross Air and Vent. Energy (Mil.BTU) 44.5 32.1Vent. Elec. Load: Heating Hrs (Mil.BTU) 0.0 1.1Vent. Elec. Load: Non Htg Hrs (Mil.BTU) 0.0 0.0Net Air and Vent. Energy (Mil.BTU) 44.3 16.3
ANNUAL SPACE HEATING SUMMARYDesign Heat Loss (Watts) 39523 22648Gross Space Heat Loss (Mil.BTU) 129.5 63.3Sensible Occupancy Heat Gain (Mil. Btu/day) 2.40 2.40Usable Internal Gains (Mil.BTU) 27.0 24.8Usable Internal Gains Fraction (%) 20.9 39.1Usable Solar Gains (Mil.BTU) 8.7 4.4Usable Solar Gains Fraction (%) 6.7 7.0Vent. Electrical Contribution (Mil.BTU) 44.3 16.3Auxiliary Energy Required (Mil.BTU) 93.8 34.1SPACE + DHW ENERGY (Mil.BTU) 134.6 65.5R-2000 SPACE + DHW TARGET (Mil.BTU) 110.2 110.2
ENERGUIDE RATING (0 to 100) 76.2 86.1Air Change Rate at 50 Pa. 76.2 86.1
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H2K Modeling - Bruce Gough, Energy Building GroupSolution
Critical month ACH (Natural) 4.43 0.50Critical month ACH (Total) 0.486 0.256
ANNUAL FUEL CONSUMPTION SUMMARYOil (Imp. Gal) 810.6 387.5Electricity (Mil. Btu) 8767.4 9092.5
ESTIMATED FUEL COSTS (Dollars)Oil 1614.4 834.3Electricity 909.5 941.2
Total 2523.9 1775.4ANNUAL SPACE HEATING SYSTEM PERFORMANCESpace Heating Load (Mil.BTU) 93.8 34.1Furnace Input (Mil.BTU) 111.0 40.7Pilot Light (Mil.BTU) 0.0 0.0Indoor Fans (Mil.BTU) 0.0 0.0Heat Pump Input (Mil.BTU) 0.0 0.0Total Input (Mil.BTU) 111.0 40.7System COP 9.8 7.5
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MNEC
SolutionExpanded Polystyrene core with plywood skins
Skins glued to core with urethane to provide vapour control
Peel & stick on panel joints for air leakage control
Nascor i-joist splines
All panels thermally broken
SolutionExpanded Polystyrene core with plywood skins
Skins glued to core with urethane to provide vapour control
Peel & stick on panel joints for air leakage control
Nascor i-joist splines
All panels thermally broken
Soft foam gaskets at panel joints
SolutionExpanded Polystyrene core with plywood skins
Skins glued to core with urethane to provide vapour control
Peel & stick on panel joints for air leakage control
Nascor i-joist splines
All panels thermally broken
Soft foam gaskets at panel joints
Construction Guide & Training DVD - with Inuktitut Translation
D1 Morrisburg
D1 Morrisburg
D1 Morrisburg
D1 Results
Floor complete in 3.5 hrs. - 5 man crew
Complete shell of house erected and tested for air leakage in 4.5 days
D2 Kott Yard
D2 Blower Door Results
R-2000 - 1.5 AC/h @ 50 Pa
Client Spec - 0.5
D1 - 0.67
D2 - #1 - 0.21
D2 - #2 - 0.19
Training Team
29 units
113 units
On-site construction started August 15 - 2010
115 house shells erected by December 20 - 2010
Pangnirtung - Nov. 27, 2010
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We could not calculate directions between Iqaluit, NU and Igloolik, NU.
Iqaluit, NU to Igloolik, NU - Google Maps http://maps.google.ca/maps?f=d&source=s_d&saddr=Iqaluit,+...
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BaffinIsland
HudsonBay
IqaluitCoral
Harbor
Arviat
RankinInlet
RepulseBay
Igloolik
December 14 & 15 2010
December 14 & 15 2010
Field Notes:21 houses inspected
Working Conditions - minus 40 deg. C / dark
Some foundations off level
Some walls installed off plumb
Some panels not pulled completely together
Field Notes:
Air leakage control much better than required
21 houses inspected
Working Conditions - minus 40 deg. C / dark
Some foundations off level
Some walls installed off plumb
Some panels not pulled completely together
Thermal imaging indicates open joints still perform well
What about costs?Slightly more than stick-built
Unfamiliarity with SIPs = higher labour pricing
Underutilized local labour
Buildings will be monitored to confirm heating cost savings
Turnkey = lower price
System refinements & manufacturing efficiencies = lower price
Multi-unit Arctic SIP houses