2D drawing information – for the purposes of assembling a printed set of plans – is derived from the BIM model(s) to the fullest extent possible. All BIM information is fully parametric so that all applicable information regarding fixtures and/or elements can be used to generate schedules. Where required by the client, editable text files are attached to fixtures/elements to aid in calculations.
In the absence of existing documented CAD/drawing standards mandated by the client, the BIM Team nominates the CAD/Drawing Standards to be used on the project. Any amendments considered necessary to these standards must be documented.
When the CAD / Drawing standards and amendments have been agreed by the BIM Team they are adopted and managed for consistent application by the BIM Manager.
At a minimum, the CAD/Drawing Standards address the following:
- Drawing naming conventions.
- Layer naming conventions.
- Sheet sizes.
- Title blocks.
- Drawing scales.
- Linestyles and line weights.
- Annotations and keynoting.
- Labelling and tagging.
- Representation of materials and finishes.