2015 Codes Re-Adoption

Before any snarky analysis, I would like to point out that the RAC performed expediently and effectively recently in getting our State's codes into modern times. Hopefully, they continue to do so with the adoption of the 2018 codes. On to the info:

Disclaimer: This does not repeal any previous amendments.

The 2015 IWUIC is adopted with no amendments. (There is definitely a correlation between the importance of a code and your knowledge of what the acronym stands for.)

The 2015  IFC is adopted with no amendments. (Keep in mind as per the original legislation only the portions referenced by the IBC are part of the UCC)

2015 IBC Amended as Follows:

913.2.2 - Deleted requirement for fire pump circuit cables to comply with UL 2196. (UL 2196 is essentially the listing for 2 hour fire rated power cabling systems. The deletion of this section doesn't mean one can't use such a system; rather, it clarifies that any of the 3 acceptable methods in NFPA 70 2014 can be used.)

2609.4 - Add the word "maintaining" to the exception for greenhouses  in the Light-Transmitting Plastic Roof Panels section. (Yes, greenhouses are in fact used to maintain plant life. The fact we need to make this clear is a troubling commentary on our society.)

2015 IRC Amended as Follows:

302.5.1 - Deletes updated requirement to provide closers on communicating doors between the garage and the house. (It was critical to remove this tyrannical intrusion by big brother into our homes. I for one never forget to shut doors in my domicile, and everyone knows responsibility is inherent to children as soon as they have the motor skills to operate handles.) 

322.2.1 & 322.3.2- The tightening of flood zone requirements to include Coastal A Zones, and some increased height requirements was not adopted and will keep the language from 09. (The devastating flooding out nation has experienced recently has been declared fake news by the RAC)

325.5 - Modified to require that mezzanines remain open regardless of sprinklers or the number of exits, and does not allow walls to be greater than 36" and still be considered open. (Essentially adopts the 2018 version of this section.)

507.6 - Deletes the deck beam span table and time warps up to present day. (Yep, we should probably make structural design considerations based on how physics works in the reality.)

602.3.1 - Add an exception to allow 12' load bearing wall studs in exposure B with a live load not exceeding  20 psf and snow load not exceeding  30 psf. (Another time travel to 2018 standards.)

602.7.5 - Deletes reference to table 602.7.5. (Part of changing 602.3.1 requires this section to be warped to 2018 also.)

M1601.4.1 - Modified so as not to allow the exception for additional closure systems on snap/button lock seams outside of conditioned spaces. (OK.) 

M1602.2 - Adds the word "perimeter" to clarify the intent. (OK.)

P2503.5.1 - Keeps the mistake from the 2009 edition that allows PVC to be air tested. (Good luck with that.)

E3901.7- Will keep the wording from 2009 which has an exception for the outdoor receptacle on decks and similar spaces less than 20 square feet. (Seems reasonable)

E3901.11 - Amends the convenience receptacle spacing for foyers less than 60 square feet in a way that will only require one receptacle. (Again, seems reasonable.)


310.1.2 - Adds section from 2018 to account for counterstrike and similar arc resistant CSST products. (Logical)

2015 IEBC

101.2 - Removes the the 3 story accessory structure limitation on the IRC potentially being applicable. (The state and I have very different definitions of accessory.)

2015 IECC

C104.2.6 - Deletes the building commissioning requirements from the final inspection requirements. (I'm on your schedule captain.)

C408.2.4 - Delete's more building commissioning requirements. (Again, no problem here.)

R102.1.1 - Keeps the exception for meeting the mandatory compliance with Chapter 5 for alternate above code compliance in residential buildings. (No issues)

Definitions: Adds Framing Factor - The fraction of the total building component area that is structural framing. (OK)

Table R402.1.2 - Adds an option for Wood frame walls to be 18 + 6.5ci for the 6 counties in Climate Zone 6. (Look, living in Climate Zone 6 is hard enough, let's give them some options.)

Table R402.1.2 - Adds a footnote that allows R-18 in place of R-20 provided the wall framing factor is 20% or less, or 24" O.C. stud spacing. (ASHRAE lists 16"o.c. walls as having a framing factor of 25%, and 24"o.c. walls having a factor of 22%, so.... basically you can use R-18 in place of R20 on 24" o.c. walls. Whatever.)

R403.3.6 & R403.3.7 - Cherry picks these sections from the 2018 Codes. It's a bit verbose, so just go have a look at them here:


R402.4.1.2 - Amends this section so that every climate zone can comply with the air change requirements for Climate Zones 1 & 2. (For those keeping score, different climates also fake news.)

R403.3.5 - Amends this section to still allow building cavities to be used for return air. (Even if you can meet sealing requirements this can create a potential moisture issue. Just because something has been done in a way for years doesn't mean it still should.)

R403.5.2- Deletes requirement for demand recirculating hot water systems in situations where a recirculating pump is needed. (I'm all for conserving water, but I think the code may be getting ahead of itself here with the cost effectiveness currently involved.)

R405.2 - Language added to clarify that Section 402.4.1.2 is in fact included in Section 402.4.1 (LOL)

Table R406.4 - Adds a footnote from 2018. (Again just have a look using the link above.)