It is common practice that a General Assembly drawing is produced first for comment and approval. 3D CAD Modelling is now the standard for steel detailing. This means the GA drawing is derived from the 3D CAD model.
The General Assembly drawing has to communicate sufficient detail to allow the structural engineers and architects an excellent understanding of the steel model without any assumptions being made klikk på denne linken.
The GA drawing should show:
- Plan view, fully dimensioning all column and beam positions
- Elevations & sections showing top of steel (TOS) heights
- All steel connections in detail views
- All section sizes
- Material type of all sections (hot & cold rolled) and plates
- Finish (such as galvanised or primed)
Once the GA drawing has been approved by the structural engineer and architect the detailed fabrication drawings can be produced. There is no point for the detailed drawings to be produced prior approval and fabrication should never commence prior approval of the GA.