Fire and impact test.

Underwriter labatories fire resistance ratings concrete walls. A fire resistance rating between the hourly fi re resistance rating periods listed may be determined by linear in terpolation based on the equivalent thickness value of the concrete masonry unit. To establish the fire rating safes may undergo various fire resisting tests. See joint systems xhbn. Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies.

Fire resistance of concrete masonry walls is a function of aggregate type and equivalent thickness of the masonry units. Perimeter fire containment systems. R 1 r 2 r n fire resistance rating of wythe 1 2 n respectively hr. A 1 a 2.

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. Combined explosion and impact test. Fire resistance certification services. These values are for solid walls or slabs.

13 14 6 15 shall apply. We test assemblies to international standards establishing an hourly rating to provide evidence of compliance to code requirements. The ratings in the charts below are calculated using the actual percent of solids in the various sizes of blocks as manufactured by capitol concrete products. Insulating concrete nonstructural concrete with a unit weight less than 60 pcf.

Fire safe ratings can be based on specific time periods the safe will withstand effect from a fire ie. Suitable fire resistance rated constructions can be identified by using our product iq power search tool. The fire rating labelling will indicate the degree of protection the safe and filing cabinet will provide its contents if exposed to extreme heat or fire. The fire resistance rating of multi wythe walls figure 2 is based on the fire resistance of each wythe and the air space between each wythe using the following equation.

The requirements of astm c55 astm c73 astm c90 or astm c744 refs. Include equivalent thickness of. Step by step instructions on locating through penetration firestop system certifications. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

Links to joint systems for use in static and dynamic applications. Step by step instructions on locating rated walls floors beams and columns. Underwriters laboratories is a nonprofit organization dedicated to advancing the ul mission through the discovery and application of scientific knowledge. R r 1 0 59 r 2 0 59 r n 0 59 a 1 a 2 a n 1 7.

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