Underwriter Labatories Fire Resistance Ratings Concrete Walls

The result t ef is then added to the concrete masonry wall equivalent thickness t e and used in table 1 to determine the wall s fire resistance rating i e the equivalent thickness of concrete masonry assemblies t ea t e t ef.

Underwriter labatories fire resistance ratings concrete walls. These values are for solid walls or slabs. Fire resistance rated designs are used to achieve code compliant installations where the building codes require hourly rated designs. For finishes on the fire exposed side of the wall a time from table 8 is assigned to the finish. Suitable fire resistance rated constructions can be identified by using our.

We test assemblies to international standards establishing an hourly rating to provide evidence of compliance to code requirements. Aci tms 216 1 14 code requirements for determining fire resistance of concrete and masonry construction assemblies lists the minimum equivalent thickness of single layer concrete walls to meet fire resistance ratings ranging from 1 to 4 hours see table on following page. Underwriters laboratories is a nonprofit organization dedicated to advancing the ul mission through the discovery and application of scientific knowledge. International vault products are manufactured to the most stringent security standards including the burglary resistance standards set forth by underwriters laboratories.

The fire resistance rating of reinforced and plain concrete walls floors and roofs depend on equivalent thickness of the element and can be found out using table 3.