Drafting specifications

Our drafting specifications ensure drawings submitted to us can be easily copied and used to construct our assets. They outline the type of font, line thickness and spacing, and character spacing for drawings.

We accept electronic technical drawings in Microstation (.DGN) and AutoCAD (.DWG) formats and have drawing borders for Microstation and drawing borders for AutoCAD.

You'll need to refer to our standard instrumentation key symbols for your drawings.

You also need to send an electronic drawings transmittal form with all electronic drawings.