This video from the 2022 NCC Seminars provides an update on the NCC referencing system for NCC 2022 Volume One and Volume Two.
Hello my name is Graham Moss, I'm the Principal Building Surveyor for the Australian Building Codes Board
this video is an update on the NCC referencing system also known as the NCC structure for the
Building Code of Australia that's Volumes One and Two of the NCC. The best way to describe the
new referencing system is to compare it with the old one and so here I have Volume One NCC 2019.
On this slide as you can see this high level the structure starts with Section A the
governing requirements that's where you've got the classifications in A6 evidence to suitability in
A5 that sort of thing and then comes the technical provision starting with structure at Section B
far resistance in Section C and all the way down to Section J energy efficiency.
Note on this slide for this moment that Section I has some asterisks there, Section I is blank.
It's been like this since 2014 which was when we took maintenance out of the code and we put
those asterisks in as a placeholder so that Section J didn't suddenly become Section I.
And then after these technical provisions and the governing requirements you find the Schedules
where the definitions, state and territory variations and things like that are found.
So that's 2019 Volume One high level structure compare this to now NCC 2022 in the new structure.
Now at this level not much has changed in fact the only real change is that special use buildings
has moved from Section H in the 2019 structure into Section I in the 2022 structure.
What this has done is allowed Section H to be designated for housing and that's Volume Two
and we'll talk about that in a moment but we'll cover the Volume One amendments first.
And as is the same today then the schedules come after these technical
provisions found from B through to J and so there's not much not much change really at this high level.
However the changes come when you start to drill into the parts of Volume One because Volume One
uses the new Section Part Type Clause referencing system, Volume Two also uses this same referencing
system Section Part Type Clause, SPTC, but like I said we'll talk about Volume Two in a moment.
So Volume One at the part level has had some quite significant changes in the referencing system on
account of this new system and perhaps the best way to explain how this Section Part Type Clause
system works is showing an example from the NCC 2019 translated into 2022 so I'll do that in a
moment starting with the next slide. But what I want to point out is that along the way you
should pick up some tips and tricks about how to find what you're after in the new system you
might come to NCC 2022 with the old reference in your mind I wanted to give you some tips
and tricks to help you find that old reference how that's been translated to the new reference.
And like I said the best way to do that is to start with an example so here is E4.5 exit
signs as specified in NCC 2019. Now this is how the existing or the 2019 referencing system works we
know that E4.5 exit signs is in Section E because under the current numbering system E4.5
starts with the letter e. Next comes part we know that E4.5 exit signs is in Part 4
because after the E comes the number 4, I think you can see where this is going. Next is type SPTC Section Part
Type Clause we are up to type. Now under the current system you'll know that this is a
Deemed-to-Satisfy provision E4.5 because there's no letter after the E, if it was a performance
requirement so consider EP4.2, that's the relevant performance required for E4.5 we know that EP4.2
is a performance requirement because there is a P under the current system after after the E.
Also there's verification methods in the current system we'd know it would be a
verification method if it was EV so for instance EV4.1 is a verification method in NCC 2019.
Because there's no letter there we know it's a Deemed-to-Satisfy provision, so just note that
for now. And next in the current system E4.5 the last last numeral in that designation is
five because it's the fifth clause in part four of Section E that's why it's E4.5.
So that's how the current system works, this is how it translates to the new system
moving from E4.5 in NCC 2019 going across to NCC 2022 we have E4D5, Section Part Type Clause.
So E4.5 becomes E4D5 now exit signs this provision translates quite tidily, it makes
the referencing system the new referencing system look quite easy really just take the take the dot
away and put in the letter D for Deemed-to-Satisfy P for performance requirement, Etc.
Now there's been other changes for NCC 2022 that mean that it doesn't always translate this tidily.
For example there's a little trick that depends on where the performance requirements are.
Here's something you've probably already know but never really noticed and that is that sometimes in
Volume One the performance requirements are at the beginning of the section and sometimes in Volume One
the performance requirements are found at the beginning of the part. So for example Section C the
performance requirements are at the beginning of the section there's three parts in section
C1 fire resistance C2 compartmentation C3 protection of openings now all these parts are
related to one another they're to do with fire performance and those performance requirements
are related to one another these three parts are all related to the same fire
related performance requirements and that makes sense and that's fine. But consider
Section F for example, so Section F is all about health and amenity but health and amenity is
quite a broad subject you've got toilet provisions in F2, you've got noise attenuation in F5,
now F2 has its own performance requirements to do with toilet provision and F5 has its own
separate performance requirements to do with noise attenuation, now although they're all about health
and amenity they're different subject areas and therefore have different performance requirements
and that's why those performance requirements are found at the beginning of each part and
of course that's fine because it's just health and amenity it all meets that particular section.
Now why am I telling you this well it's because where the performance requirements are found at
the beginning of the part we've had to actually create a new part to accommodate those performance
requirements and also verification methods if there are verification methods for that particular
part. So for example Section C again fire resistance we've got the performance requirements
and verification methods in a brand new Part C1 and of course what that has done is meant
that the part number in the referencing system has bumped up by one so C1.14 ancillary
elements as referred to in NCC 2019 becomes C2D14 ancillary elements in NCC 2022 because the part
number has been bumped up by one. And if you're still lost CRTL-F is your friend you can do a
search in the new NCC 2022 because we've included the old reference this 2019 reference next to the
title in every new provision in NCC 2022. Now the specifications, in Volume One the specifications
are now all numbered it starts at number one and goes into the 40s I have on this particular slide
some of the more popular specifications listed here for example Spec C1.1 is now spec 5.
Now I'm afraid I haven't got any translation tricks for you here but we do have a list
of NCC Specifications at the front of Volume One that you might find useful and of course
that search function that I mentioned just now also works because we still have the old clause
numbers next to the title of every part of the clause for NCC 2022. Now that covers the changes
in the referencing system and the structure for Volume One now I'm going to show you Volume Two.
Volume Two has had a big makeover and this is what Volume Two looks like today, we start with
Section 1 the governing requirements which is more or less the same as Section A in Volume One,
then we have Section 2 in the 2019 system for Volume Two and Section 2 contains the performance
provisions this is where the performance requirements and the verification methods live,
and then we have Section 3 which is mostly the acceptable construction practice and all the parts
are listed here from 3.0 structural provisions down to 3.12 Energy Efficiency,
and after that we have the Schedules including the definitions and state and territory variations
much certain territory editions much like Volume One. So that's how Volume Two looks today
like I've said we've given Volume Two a large makeover and that's because for 2022 we've picked
up most of the acceptable construction practice out of Section 3 and transferred that into a new
ABCB reference document the ABCB Housing Provisions Standard. Think of this as being like a reference
standard like perhaps an Australian Standard it's not in the NCC but it's called up by the NCC.
It's not our reference document we already have three ABCB reference standards there's the
protocol for structural software, the standard for construction in flight hazard areas, we've
also got the standard for NatHERS Heating and Cooling load limits these are freely available
ABCB Standards that are on our website today and referenced by the National Construction Code.
So the idea of an ABCB Standard isn't new, however this is our biggest one ever it's over 400 pages
and that's what you get when you pick up most of Volume Two and move it into a reference standard.
As a result Volume Two itself has become a lot thinner you still have the governing
requirements, that's section A and then you have that Section H that I mentioned earlier
and each of these parts, the parts in Section H have the relevant performance requirements, the
verification methods, if there are any, and then you have these Deemed-to-Satisfy provisions that are
enacting the Housing Provisions by referencing them. Now these particular provisions might also
enact a referenced Australian Standard, I'll show you an example on the next slide, but
certainly this is how the ABCB Housing Provision Standard is called up by NCC 2022 Volume Two.
Now some of you might be thinking okay when it comes to Volume Two today I rarely find myself in
Section 2 I usually just go to Section 3 and that's where I find my Deemed-to-Satisfy
provisions within the pages of the code the acceptable construction practice and
you think to yourself well because of this I'm probably going to be finding myself picking up
the Housing Provisions Standard and I don't really have to pick up NCC 2022 Volume Two because I'm not
using the verification methods or the performance requirements. Now that might be the case and you
may you are going to find yourself in the Housing Provisions Standard a lot but please note this very
carefully that the ABCB Housing Provisions Standard must be read in conjunction with NCC 2022 Volume Two.
I'll demonstrate this by showing you H1D5 masonry in Volume Two. So H1D5 subclause (1) is the new
part of volume Two that deals with masonry veneer now this is one of those application clauses
that I was speaking about earlier. Note that this application clause allows you to use the reference
standards AS 3700 or AS 4773 series and this is the case today there's no technical change here
or as an alternative to these you can use Part 5.2 of the ABCB Housing Provisions Standard
this is how it's enacted by Volume Two, but what I want to highlight on this slide
is the limitations that for using the standard are contained here in Volume Two. Now these
limitations aren't new these are 184.108.40.206 in NCC 2019 however these limitations are integral to
using the provisions of the standard but you won't find them in the standard so as you can
see you need to keep Volume Two at hand when you're using the new ABCB Housing Provisions Standard but
of course in a digital environment that's easy you just click between the two documents that's fine.
Now don't worry if you do pick up the standard first there are reminders in that standard itself
to point you back to Volume Two so here is Part 5.2 masonry veneer inside the standard we've just
been passed here we've just been sent here from Volume Two but have a look at subclause (1) this
subclause is reminding us that this particular part of the Housing Provisions Standard is subject
to the limitations found elsewhere that is back in Volume Two H1D5(1)(c). Note also that
5.2.1 subclause (2) is saying that you don't have to use these Housing Provisions Standard if you're
complying with AS 3700 or the AS 4773 series it's reminding you that if you're using the reference
documents as acceptable construction manuals as we call them today then you don't need to use these
particular provisions inside the Housing Provisions Standard. So what I'm saying if you do pick up the
standard first you're going to find links back to Volume Two when it matters. Now a question that we're
often asked about the new referencing system is why are we doing this well there's a few reasons
but in a nutshell the new referencing system is necessary to achieve digitization. Put simply the
existing referencing system is not machine readable and a machine readable referencing
system is necessary to achieve digitization, now digitization is something that the board and the
office of the ABCB are committed to and therefore was necessary to introduce this new referencing
system. This video has been a brief overview of the new referencing system for NCC 2022 Volumes One and Two.
If you do require further information please refer to our website abcb.gov.au