Solid Concrete Wall Fire Rating

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.

Solid concrete wall fire rating.

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. Fire endurance of structures figure 5 shows the effect of fire on the resistance of a simply supported reinforced concrete. Unit width block type face shell solid equivalent thickness normal weight concrete siliceous gravel medium weight 105 125lb per cubic ft blended light weight under 105lbs per cubic ft expanded clay shale or slate 4 4 3 core regular solid. 13 14 6 15 shall apply.

Concrete masonry walls are often used for their ability to isolate continue reading sound. 25 mm thickness measured perpendicular to the face of the wall of ceramic fiber in the joint can be used in walls with fire resistance ratings up to 3 hours while a 2 in. 203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in. Where all of the core spaces of hollow core wall panels are filled with loose fill material such as expanded shale clay or slag or vermiculite or perlite the fire resistance rating of the wall is the same as that of a solid wall of the same concrete type and of the same overall thickness.

The equivalent thickness of different types of concrete masonry is provided in the following. The standard is used to hourly fire rating and to indicate wall s its durability during a fire. 13 mm a 1 in. 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.

For example for an 8 in. Structural function or both. A fire resistance rating is assigned when the average temperature rise does not exceed 1000 ºf 556 ºc or the maximum temperature rise does not exceed 1200 ºf 667 ºc at any one point. Fire ratings hours.

6 6 6 2 core regular 2 core 75 solid solid. The hose stream test provides a meaningful measure of. 51 mm thickness can be used in the joints of a 4 hour wall. Fire resistance ratings of walls there are several sources of fire resistance ratings for brick masonry assemblies that will typically satisfy.

These values are for solid walls or slabs. The requirements of astm c55 astm c73 astm c90 or astm c744 refs. Fire resistance rating or fire rating is defined as the duration of time that an assembly roof floor beam wall or column can endure a standard fire as defined in astm e 119 3. Fire resistancerated wall assembliesare commonly evaluated using astm standard e 119 ref.