Mixing up inside and outside dimensions when reading blueprints
1st YearMeasuring & Layout
Before fabricating anything, confirm with your foreman or journeyman whether blueprint dimensions are inside clear, outside, or centerline. Mark it on the…
Safer field move
Before fabricating anything, confirm with your foreman or journeyman whether blueprint dimensions are inside clear, outside, or centerline. Mark it on the drawing in pen.
Ask Foreman
Can you verify this before I keep going? I’m looking at: Mixing up inside and outside dimensions when reading blueprints. What’s the approved correction for this job?
Do not
Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.