Measure elevation from AFF or control line

Is this bottom-of-duct from AFF, or are we using another reference?

I'm checking measure elevation from aff or control line. I measured the field condition and want to verify the reference point before I act. Is this bottom-of-duct from AFF, or are we using another reference?

Apprentice Workflow, Communication & Learning 3rd Year YELLOW

Stop if

Measurement question: Measure elevation from AFF or control line. I have the location, photo, and measured reference point ready. Who should verify before this becomes cut, ordered, drilled, or covered?

Watch out

Do not mix centerline and bottom-of-duct elevations.

Check

room/grid/area
photo with tape visible
reference point
measured number
drawing/detail if available
elevation/access impact
coordination conflict if any

Say this to your foreman

9018 measure elevation from aff or control line coordination measuring yellow 3 is this bottom-of-duct from aff, or are we using another reference? i'm checking measure elevation from aff or control line. i measured the field condition and want to verify the reference point before i act. is this bottom-of-duct from aff, or are we using another reference? measurement question: measure elevation from aff or control line. i have the location, photo, and measured reference point ready. who should verify before this becomes cut, ordered, drilled, or covered?

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