Ductwork in Stairwell Pressurization

For this stairwell pressurization duct, what are the specific code and design requirements? And is it on emergency power?

I'm checking ductwork in stairwell pressurization at [location]. I found ductwork supplying pressurized air to stairwell for smoke control. For this stairwell pressurization duct, what are the specific code and design requirements? And is it on emergency power?

Fire/Smoke Dampers & Rated Assemblies 3rd Year RED

Stop if

Hold point on ductwork in stairwell pressurization: I have the location, photo, drawing/detail, and what was checked. Who should verify before this gets cut, covered, lifted, sealed, energized, or signed off?

Watch out

Don't treat stairwell pressurization as standard duct. Don't install without checking smoke control design.

Check

room/grid/area
photo of condition
drawing/detail
manufacturer/model if visible
what I already checked

Say this to your foreman

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