What does "(A, B, C) (I-P)" refer to?

[sunyaer]

The following is the table title from Ontario building code SB-10 Division 2 chapter 1 (page 25 of SB-10):
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TABLE SB 5.5-5 (See Appendix A.)
(Supersedes Table 5.5-5 in 2010 ANSI/ASHRAE/IES 90.1)
Building Envelope Requirements for Climate Zone 5 (A, B, C) (I-P)

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What does (A, B, C) (I-P) refer to?
It looks like "I-P" is a unit system, but want does it stand for? Imperial? Do "I-P" and "IP" stand for the same thing? "IP" is in Table 3.1.1.2.A (IP)

 

[tmurray]

That section supersedes similar tables in ASHRAE 90.1 to understand them them properly, you would need to view them within that standard.

I'm not in possession of the standard (it is not referenced by the national code), but my initial assumption is that these are sub-categorizations of a climate zone. The national code breaks Zone 7 into A and B to apply different requirements.

The I-P and SI mean imperial and international system as you suspect.

 

[mark handler]

The following is the table title from Ontario building code SB-10 Division 2 chapter 1 (page 25 of SB-10):
-------------------------------------------------------------------------------------------------------------------
TABLE SB 5.5-5 (See Appendix A.)
(Supersedes Table 5.5-5 in 2010 ANSI/ASHRAE/IES 90.1)
Building Envelope Requirements for Climate Zone 5 (A, B, C) (I-P)

------------------------------------------------------------------------------------------------------------------

What does (A, B, C) (I-P) refer to?
It looks like "I-P" is a unit system, but want does it stand for? Imperial? Do "I-P" and "IP" stand for the same thing? "IP" is in Table 3.1.1.2.A (IP)

North America was divided into 8 general climate zones based primarily on temperature.
It was then divided into three moisture categories designated A, B, and C.
Zone A being humid, Zone B being dry, and zone C Marine, where the warmest months don’t exceed 72 °F and winter temperatures range between 27 and 65 °F.