I will follow Building Lines when running certain things, rather than level (per Torpedo, etc)- when the installation calls for it.
Human nature will follow the overwhelming structural lines and interpret those as "Normal".
If the building lines are not plumb, it goes unnoticed.
If Conduit is run level per a Torpedo, but not plumb with the building lines, it will be very noticable.
These are (actually "were") issues which came up alot in my former long term trade specific industry (Banks).
CCTV Camera brackets, long runs of 3000, 4000 and 6000 Wiremold Raceways, and similar items.
We would follow Ceiling lines for measurements (measure down from the ceiling, rather than up from the floor), and things turned out looking perfect - even though they may be as much as 5% off plumb!
This applies to only the situations which merit such applications.
When it comes to running Conduits across the wall of a Concrete Tilt-Up, then it's back to the Torpedo!
Including a personal $0.02
Scott35
