AEC (UK) Layer Protocol v4.0 is here!

For all of you asking when the AEC (UK) will release an update incorporating Uniclass 2015… it is now available from the Documents page.

Version 4.0 incorporates Uniclass 2015 into the layer naming conventions, and also adds best practice guidance to help you understand how to implement the various Uniclass tables. We have also included an updated and expanded version of our Table Zz (for non-physical or “CAD” elements). This is expanded from the original AEC (UK) table which has since been made available from the NBS website and includes items requested by our users across the UK.


4 Responses to AEC (UK) Layer Protocol v4.0 is here!

  1. Kate says:

    I’m new to this so please forgive me if this is obvious, but I have a question when trying to update our layer naming classification fields across to the new uniclass 2015 classification tables. I need one layer for Walls-external and another for Walls_internal. I currently use G251 and G252 classification codes but I cannot find a similar level equivalent classification within the Uniclass 2015 tables? In the area of as-built survey drawings I only need a simple level of specification but do need to differentiate between internal and external so cannot just use EF_25_10 “Walls”. Similarly I need to have Windows and doors on separate layers but without further sub-classification so can’t use EF_25_30 “Doors and windows”. I found the previous classifications quite user friendly but am struggling on initial attempt with the new version. Any guidance is much appreciated and apologies if I have misunderstood. Many thanks.

  2. andrewallen2015 says:

    AEC (UK) Layer Protocol v4.0 is here!
    Where? Can you please supply a link to a pdf / downloadable version please?
    Many thanks.

    • AEC (UK) Chair says:

      On the Documents page, Andrew.

      • Hi,
        Thanks for the reply to my last question. I have been working on our acad layers based on v4-0-2. My issue is that as an architects practice, we have tried and tested office printing standards that are defined via line colour and therefore line weight. I simply need to add more defined layers for example:-


        is a defined layer, but that leaves me one colour and line weight to use. I don’t want our planning team individually making their own separate colour and weight decisions for glass, the frame or the cill.

        So can I add in more defined numbers like below to cover these elements?


        Any help would be much appreciated.



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