The new 2014 Alberta Building Code came into effect November 1, 2015. Section 9.36, Energy Efficiency will come into effect May 1, 2016. At that time you will be able to build with either the 2006 or 2014 versions until November 1, 2016. After November 1, 2016 you must use section 9.36.
2014 Alberta Building Code section 9.36 Energy Efficiency is divided into 3 main Scopes, that cover 3 main areas of the buildings energy efficiency;
3.Domestic Hot Water
There are 3 compliance paths
The following examples are based on
•climate zone 7A – 5000 degree days (Calgary AB)
•ventilation with Active HRV (Heat Recovery Ventilator) – when no HRV is used, the insulation levels must be increased as per Part 9.36 tables
•HOT2000 Energy Modeling Software
•Effective Insulation levels – NOT Nominal levels – I.E. a 2X6 wall with studs at 16” on center with nominal R-20 batts, has an effective value of approximately R-15.5.
This is the house you want to build –
called PROPOSED house
- 1902 ft2 2 story
- full basement
- No vaulted ceiling
- Bonus room over garage
Create a copy of this house –
called REFERENCE house
Based on the old EnerGuide 78
Create an Energy Model of this REFERENCE house – Use the Prescriptive section of Part 9.36
Effective Insulation values required by Part 9.36
Effective Insulation – NOT Nominal
Climate Zone – 7A 5000 Degree Days
HRV – No (must be modeled without an HRV)
Attic Insulation R- 59.2
Wall Insulation R-17.49
Foundation Insulation R-19.65
Cantilevers R- 28.5
Windows Overall Average R 3.55 (U 1.6)
Furnace 92% AFUE
DHW – Natural Gas Tank 67% EF
Air Tightness Prescriptive Details
FDWR 17% Minimum 22% Maximum
Obtain Total Energy Usage for this REFERENCE house –
Obtain Window / Wall Ratio
If the PROPOSEDhouse has < 17% then use 17% for the REFERENCE house.
If the PROPOSEDhouse has >22% then use 22% for the REFERENCE house.
Otherwise, match both if between 17% - 22%
REFERENCEhouse Total Energy Usage
Walls 2X6 24” O.C R-20 Batts
Attic Insulation R-40 Blow In
Windows Double Low E Argon
Foundation 2X4 24” O.C. R-12 Batt
Rim 4” CC Spray foam
Cantilevers 4” CC Spray foam
HRV 74% / 68%
Furnace 92% AFUE
DHW Direct Vent NG 67%
Create an Energy Model of this PROPOSED house – Use the REFERENCE house model as the baseline
Adjust insulation levels, windows, heating and DHW to suit.
Obtain Total Energy Usage for PROPOSED house.
PROPOSED must be equal to or less than REFERENCE
Build PROPOSEDhouse with other minor prescriptive requirements
Simplified List - See Part 9.36 for details
See 2014 ABC Part 9.36 for details or contact us for consultation.
is the Fenestration Door and Window Ratio
Most new homes are only 8% - 12%
For the reference house you must use 17% minimum divided equally on 4 sides.
BUILDING THE REFERENCE ENERGY MODEL
To produce the reference energy model, the code requires the non-HRV insulation values and no HRV to produce the energy usage model to compare to the proposed house.