Respecting Gravity Systems
Coordination, RFIs & Other Trades⚠️ VERIFYControlled condition
Core Answer
Gravity drain systems usually cannot move around duct as easily as pressure piping or conduit.
What to Check First
- Confirm drain slope
- invert/elevation
- ceiling height
- coordination priority before rerouting.
Ask Foreman
This conflict involves a gravity drain. Do we verify slope/elevation and approved reroute before changing duct?
Do Not Do This
Do not tell plumbing to “just move it” if it is a gravity system needing slope.
Why This Matters
flat drain, ceiling too low, plumbing code issue, duct rework
Verify against: plumbing drawings, coordination drawings, project elevations, foreman direction.