Design No. L502 August 13, 2020 Unrestrained Assembly Rating — 1 Hr Finish Rating — 22 Min. or (16 Min. See Item 7D) This design was evaluated using a load design method other than the Limit States Design Method (e.g., Working Stress Design Method). For …

Fire resistance is the ability of an assembly constructed in a laboratory to contain a fire in a carefully controlled test setting for a specified period of time.

Here, you can find drawings for our UL fire-rated floor assemblies and UL fire-rated ceiling assemblies. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire-rated ceiling assembly.

3/4" [19 mm] Steel plate, minimum 4" [101.6 mm] by 4" [101.6 mm] by 3/4" [19 mm] thick. Attached to structure per UL. View assembly information on UL Website. Available insulation products for UL L502, UL L515, UL L533, UL L545, UL L569, UL L590, UL M532, UL M535.

Fire-RatedFire-resistance ratings have long been used by UL, ASTM and building codes to measure the performance of various constructions for fire containment purposes. As applied to elements of buildings, the fire-resistance rating classifies the ability of an assembly

1-hour floor/ceiling assembly with solid sawn floor joists, gypsum concrete topping, carpet, and resilient channels. Fire rating per UL L502; STC 58 and IIC 73 per California Office of Noise Control Assembly 2.1.4.2.1.1.

Design No. L502 April 04, 2023 Unrestrained Assembly Rating — 1 Hr Finish Rating — 22 Min. or (16 Min. See Item 7D) This design was evaluated using a load design method other than the Limit States Design Method (e.g., Working Stress Design …

The UL assembilies listed below are Cretified for use in Canada by UL and comply with CAN/ULC S101 for fire resistence. The Standards Council of Canada recognizes UL as an accredited testing and cerification organization for certification of materials and systems to Canadian standards.

Common issues with UL approved assemblies: •Shallow Floor depth •Use prescriptive assemblies: IBC 721.1(3) assembly 21-1.1 •Or use the calculated method in IBC 722 •Use of Structural Composite Lumber •Manufacturer’s ESR shows equivalent fire performance to solid sawn Shallow Floor Depths • 1” gypsum underlayment • 19/32” WSP

3/4" [19 mm] Steel plate, minimum 4" [101.6 mm] by 4" [101.6 mm] by 3/4" [19 mm] thick. Attached to structure per UL. View assembly information on UL Website. Available insulation products for UL H501.