B
HomeLibrariesCopilotSearchProjectsBookmarks
FeedbackHelp Desk
Libraries
Building Codes
Code LibraryIBC — BuildingIRC — ResidentialIFC — FireIPC — PlumbingIMC — MechanicalIFGC — Fuel GasIECC — EnergyNEC — ElectricalModel Codes
Specifications
CSI SpecificationsDOT SpecsTransit SpecsUSACE
Standards
TransportationRailroadFire SafetyAccessibilityStructural
Tools & References
DiagramsAssembliesProductsCalculatorsChecklistsPermits
PricingLog in
Home / Assemblies / UL P103
UL P1031.5-hr Fire RatingFloor/CeilingLoad-BearingSTC 59
ConcreteHigh STCDesign

Concrete Slab Floor/Ceiling — single layer None

UL-listed 1.5-hour fire-rated concrete slab floor/ceiling assembly. Precast hollow-core slab, single layer of None ceiling.

Cross-Section Diagram

1234FLOOR/CEILING ASSEMBLYSECTION · NOT TO SCALE4 LAYERSsee legend for ① ② ③
Legend
1Floor covering(varies)
22-1/2" lightweight concrete on steel deck(2-1/2")
3Precast hollow-core slab(6.0")
4None(0")

Specifications

Fire Rating
1.5-Hour
STC Rating
STC 59
Load Bearing
Yes
Total Thickness
7.5"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
P103
Assembly Type
Floor/Ceiling
Test Standard
CAN/ULC-S101
Construction Group
Concrete/Masonry
Number of Layers
4 layers

Applicable Codes

IBC 2024 Table 722.1IBC 2024 §722

Construction Summary

Precast hollow-core slab, single layer of None ceiling

Material Layers

LayerMaterialThickness
1Floor coveringvaries
22-1/2" lightweight concrete on steel deck2-1/2"
3Precast hollow-core slab6.0"
4None0"

Important Notice

This assembly listing is for reference only. Always verify against the current UL Product iQ database before specifying in construction documents. Material substitutions may void the fire rating. Consult with a qualified fire protection engineer for project-specific requirements.