TinnerFlow logoTinnerFlow™
Apprentice Q&A · #200

I just realized I misread the print, and the last 100 feet of duct is 4 inches too small. Do I hide it or tell the boss immediately?

4th YearAdvanced Problem SolvingRED · Stop / Verify

Tell your foreman immediately. Never try to hide a major installation error behind ceiling tiles. The system balancer will catch the severe airflow restriction the moment the fans start up, forcing a massive, costly teardown later. * Own the mistake instantly, bring the foreman the exact layout metrics of the error, and help them organize a recovery plan to swap out the runs. Admitting a mistake early preserves your reputation as a professional, trustworthy pre-foreman who respects the integ

Search Field RescueOpen in Q&A search

Plain-English answer

Tell your foreman immediately. Never try to hide a major installation error behind ceiling tiles. The system balancer will catch the severe airflow restriction the moment the fans start up, forcing a massive, costly teardown later. * Own the mistake instantly, bring the foreman the exact layout metrics of the error, and help them organize a recovery plan to swap out the runs. Admitting a mistake early preserves your reputation as a professional, trustworthy pre-foreman who respects the integrity of the trade.

--

Field checklist

Ask Foreman

Hey boss, I’m on advanced problem solving and need verification before I touch this: I just realized I misread the print, and the last 100 feet of duct is 4 inches too small. Do I hide it or tell the boss immediately? Do you want me to stop here and check the approved detail, submittal, or inspector/manufacturer requirement first?

Open Ask Foreman

Verify before acting

Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

Related questions

Related Field Rescue routes

Related mistakes & recovery checks