Some things are done more efficiently in the shop than in the field. The more work you can do in the controlled environment of the shop, the lower your costs of completing a job. Some examples:
- In the field, four electricians may be walking back and forth to the conduit bender, which is often not in the room where the conduit is being installed. Often, someone has to stand there and wait his turn. From your CAD drawings, you can generate and identify most of the required bends and have those fabricated in the shop. Many firms do this and find the savings to be significant.
- It’s easier to wire the internals of, say, a control cabinet in the shop than in the field. Space, lighting, tool layout, and other factors contribute to this. Rather than have electricians mounting motor starters to backplanes in the field, let them wire connections to a prefabbed motor control cabinet.
- Properly completing “As Left” drawings can be expensive. One practice contributing to this expense is electricians update paper drawings by hand. There is usually a table set up somewhere for “markups”; people take notes on (little scraps of) paper and manually transfer the information to the drawings. Then a CAD technician updates from the markups. Why not skip all the writing? Let the CAD technician update from photographs. This really saves money on a project with many motor nameplates you’d otherwise jot data down from.
Source: Mark Lamendola | Mindconnection