CP 83-1:2004 (2020)
[Confirmed]
Code of practice for construction computer-aided design (CAD) - Organisation and naming of CAD layers
...formation (I-
in the Presentation field) of area calculation (AREA as main element and CALC as the sub-element in
the Element field)...
...formation, lot numbers, lot boundaries
CDSH Civil defence shelters (public shelter layouts, bounds of protection)
CEIL Ceilings
CHNY Chimneys
CLAD Claddings
COLN Columns
COMA Compressed air systems
CONC Concrete structures ...
...formation, lot numbers, lot boundaries
CADA
Airspace lot boundaries and lot numbers, elevation sketches, total area tables for airspace
lots
CADN Proposed new lot boundaries, house numbers, lot and marker numbers, inset diagrams
CADP Per-origi...