Static field route #19361

What do I do when a spiral riser has a wide open slab penetration gap?

Fire/Smoke Dampers, Access Doors & Rated Assemblies⛔ STOP / GET DIRECTIONField answer expansion

📖 Verified core answer

A wide open floor penetration is a rated-assembly problem. Stop and firestop/sleeve it only by the approved listed detail.

Open in Field Rescue Open category

Field verification checklist

Measure/photograph the gap around the pipe.
Confirm floor rating and penetration detail.
Check whether a sleeve is required.
Identify who owns firestopping on the project.
Do not cover until the listed assembly is installed/inspected.

Ask foreman

The core hole around the spiral riser at [location] has a wide open gap through the slab. I checked that it is a floor penetration. Do you want this held for the approved sleeve/firestop detail?

Text to foreman

Route options

ACorrect it only if the fix is within your assignment and approved method.

BHold and document if it affects pressure class, listed assembly, material spec, support load path, fire barrier, equipment, TAB, or another trade.

CBring the foreman/detailer the location, what you checked, and what decision you need before sealing, testing, cover, or startup.

Do not do this

Do not stuff random insulation or spray foam around a rated floor penetration.

Why this matters

Bad floor penetration firestopping can fail inspection and compromise smoke/fire separation between levels.

Final verification

Use this as field training guidance. Final direction still comes from the foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, pressure/material schedule, and AHJ/code requirements.

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