TinnerFlow™3rd YearMeasuring & Layout
On iso drawings, establish which way is north, east, and up before interpreting any fitting. Build a cardboard mock-up of complex fittings before cutting…
On iso drawings, establish which way is north, east, and up before interpreting any fitting. Build a cardboard mock-up of complex fittings before cutting metal. A handed fitting built backward is scrap.
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.