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Mistake & recovery · #124

Neglecting to balance takeoffs by adjusting splitter dampers during rough-in

3rd YearDuct Systems

Set splitter dampers during rough-in based on CFM ratios from the mechanical schedule. An unbalanced rough-in forces the TAB contractor to fight the syste…

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Safer field move

Set splitter dampers during rough-in based on CFM ratios from the mechanical schedule. An unbalanced rough-in forces the TAB contractor to fight the system during balancing — a costly and time-consuming problem.

Ask Foreman

Can you verify this before I keep going? I’m looking at: Neglecting to balance takeoffs by adjusting splitter dampers during rough-in. 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.

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