MEP
Rough-In
The initial phase of MEP installation where pipes, conduit, and ductwork are run through walls and floors before the finishes are applied.
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In the Field
Rough-in happens after framing inspection and before insulation and drywall. All trades must coordinate rough-in to avoid conflicts — ductwork, plumbing, and electrical all compete for the same ceiling and wall cavities. Pre-construction BIM coordination prevents field clashes.
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Rule of Thumb
Allow 2–3 weeks for MEP rough-in coordination on a typical commercial floor before drywall can start. Rushing rough-in creates punch list items that are exponentially harder to fix after close-in.