Install Instructions

IM-PR 566442 1114 (Design Manual)
12
Figure 1-9 Canada average annual heating degree-days (C-degrees)
1
Above-ground
Opaque Building
Assembly
Heating Degree-Days of Building Location in Celsius Degree-Days
Zone 4:
< 3000
Zone 5:
3000 to 3999
Zone 6:
4000 to 4999
Zone 7A:
5000 to 5999
Zone 7B:
6000 to 6999
Zone 8:
> 7000
Maximum Overall Thermal Transmittance, in W/(m
2
•K)
Walls 0.315 0.278 0.247 0.210 0.210 0.183
Roofs 0.227 0.183 0.183 0.162 0.162 0.142
Floors 0.227 0.183 0.183 0.162 0.162 0.142
Table 1-4 Overall Thermal Transmittance of Above-ground Opaque Building Assemblies
NOTE:
(1) Except as provided in Sentences (2) and (3) and Sentence 3.2.1.3.(1), the overall thermal transmittance
of above-ground opaque building assemblies shall be not more than that shown in Table 1-4 for the
building or part thereof enclosed by the opaque building assembly, for the applicable heating-degree
day category. (See Appendix A of National Energy Code of Canada for Buildings 2011.)
(2) Where radiant heating cables or heating or cooling pipes or membranes are embedded in the
surface of an above-ground opaque building assembly, this assembly shall have an overall thermal
transmittance no greater than 80% of that required by Sentence (1). (See Appendix A of the National
Energy Code of Canada for Buildings 2011.)
2
1. ©NRC. 2013. “National Energy Code of Canada for Buildings 2011” Figure A-1.1.4.1.(1) in Appendix A of Division B
2. ©NRC. 2013. “National Energy Code of Canada for Buildings 2011” Article 3.2.2.2.
(NEC Article 3.2.2.2.)
Division B A-1.3.1.2.(1)
GG00180A
Halifax
7000
6000
5000
5000
4000
4000
4000
5000
5000
4000
3000
3000
4000
7000
Fredericton
Ottawa
Québec
Toronto
Winnipeg
Victoria
Regina
Yellowknife
Edmonton
Charlottetown
St. John’s
Iqaluit
Whitehorse
6000
5000
Figure A-1.1.4.1.(1)
Average annual heating degree-days (C-degrees)
National Energy Code of Canada for Buildings 2011 Division B A-3