The UK BIM layering standard seems to be a reworking of the old UK (Autodesk driven) CAD layering standard, and as such seems to have limited value to any BIM product. The original UK CAD standard was established with two aims -
1. The comply with BS1192 - in that all common elements should be placed on unique and clearly identified layers.
2. To ensure most drawings used more than 100 layers.
The CAD standard used CISFB codes for element identification, which in my view does not comply with BS1192 in that you have to be quite a nerd to be able to identify any element by its CISFB code.
The second objective was purely to blow out Microstation, as at the time it was limited to just 99 layers.
This process delivered a cumbersome layer naming convention, which could be made to work with products that had a high degree of automation, but fell down in interoperability terms, the very reason for setting up the standard.
A BIM solution has far less reliance on layer naming to identify elements, I cannot see how these people can suggest a naming convention that was cumbersome for 2D CAD could be suitable for BIM
AC 17
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