Westbrook Block is a proud producer of Underwriters Laboratories® (UL®) Approved Fire-Rated CMU, both Light Weight and Normal Weight densities, in 2-, 3- and 4-hour configurations. Allowing for safe means of egress and a higher fire rating, these blocks should no longer be looked at as JUST standard grey CMU.

2024年9月4日 · 1.2 Fireplace accessories as covered by these requirements are intended for installation in accordance with the Standard for Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances, NFPA 211, and in accordance with codes such as the International Building Code, International Mechanical Code, and related mechanical codes.

USG provides resources here for our UL wall assemblies for seamless integration into any construction project. These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies.

Concrete masonry is a noncombustible construction material possessing excellent fire-resistive properties. The resistance of concrete masonry to fire is well established by extensive testing to be a function of the type of aggregate used in the manufacture of the masonry units and their equivalent thickness.

The table on the following pages lists the UL fire rated assemblies that include Vulcraft composite and non-composite decks profiles. This summary table is provided to assist in identification of assemblies to meet specific project requirements. Refer to the particular UL assembly for full details of construction including, specific

4 Hour Fire Ratings: Underwriters Laboratories Design No. U905 shows that a 2 hour rated 8, 10, or 12 inch (20, 25, or 30 cm) concrete block wall is improved to four hours when cores are filled with perlite. UL Designs U901, U904, and U907 also achieve 4 hour fire ratings.

Rmax has tested and obtained classifications through Underwriters Laboratories (UL) for the use of various wall insulation products in fire resistant rated Wall and Partition assemblies per ANSI/UL 263.

2015年6月12日 · U906, U907, V454, and V499. Refer to the UL Fire Resistance Certification information for File R15890 (CCVW) for applicable design coverage and details of the fire-resistance rated wall assemblies covered

compliance with the appropriate UL design number. For all fire rated assemblies provide concrete masonry units conforming to Underwriters Laboratories Inc. UL 618 and design numbers: U901, U904, U906, U910, U912, U913 and U914 .

Fire resistance assemblies and products are developed by the design submitter and have been investigated by UL for compliance with applicable requirements. The published information cannot always address every construction nuance