Mike Dolt Enterprises
Mike Dolt Enterprises
User: Npstewart, Location: Florida
Asked on: Wednesday, March 30, 2011 at 9:20 am EDT
Answered on: Tuesday, May 14, 2024 at 3:28 am EDT
Question: I have a fire rated corridor going around offices. I am penetrating the corridor with a 2" sleeve for circuits etc. above every office. I have a UL detail to install the sleeve however the building dept is asking for a detail to fill the void between the wires and the wall of the sleeve. My UL detail doesen't cover that right now. Currently I am using UL detail W-L-1453.Thank you guys
Fire-Rated Sleeve Penetration with Void FillMaterials
Fire-resistant caulk or sealant Non-combustible insulation (e.g., mineral wool, fiberglass)
Installation
1. Install the fire-rated sleeve according to UL detail W-L-1453.
2. Route the circuits through the sleeve.3. Fill the void between the wires and the walls of the sleeve with fire-resistant caulk or sealant.
4. Install non-combustible insulation around the wires and into the remaining void space.
Additional Considerations
Use materials that are compatible with the fire-rated sleeve and caulk. Ensure that the void fill is completely filled and provides a continuous barrier against fire and smoke.* Inspect the installation regularly and repair any damage to the void fill or caulk.
Note: This detail supplements UL detail W-L-1453 by providing instructions for void filling. Verify that this detail complies with all applicable building codes and regulations. Flag for review