Fire rated non-loadbearing partitions

ir_71 · 03-07-2011, 06:00 AM

Lightweight non-loadbearing partitions are used in all types of buildings; the actual form of construction will be determined by the specified performance criteria and desired appearance. Fixed stud and sheet or panel partitions are normally used in housing, schools and industrial buildings, whereas re-locatable frame and sheet systems are more appropriate for offices and other commercial buildings. Twin-framed constructions of various types are also available, which are used to sub-divide multi-screen cinema complexes and other applications requiring high sound insulation. To some extent all partitions help to contain the effects of fire and depending on the size and function of a building, national Building Regulations require lightweight non-loadbearing partitions to have specific fire resistance. When correctly specified and installed, the partitions will contribute substantially to the safety of the occupants of the building. Insurance companies may also specify particular requirements for certain applications such as property protection. Accordingly, many partition suppliers carry out extensive research and development and are able to demonstrate that their partition designs can achieve satisfactory levels of fire resistance when tested in the laboratory to the appropriate standards. Details of such fire rated partition designs, which cover a range of requirements, are described in this publication for fire resistance periods ranging from 30 minutes to 240 minutes (or more).
This publication relates to the fire resistance performance of partitions, which can be considered as a single element in their own right, with no interruptions in their function from such items as doors or glazing. This is the vitally important starting point for designing partitions that will achieve suitable fire resistance between spaces. It should be appreciated that the fire resistance of a partition assembly containing other components, such as a door or glazing, is likely to be controlled by the performance of the weakest component, In addition to the fire resistance of partitions, based upon their behaviour when subjected to a standard fire resistance test, this publication also covers reaction to fire (a property of individual materials rather than the complete element). Reaction to fire may also need to be considered separately in order to meet the requirements of Building Regulations. The classification of materials can be obtained from the partition manufacturer/supplier, but test evidence (test(s)) and/or assessment(s) must support the claimed fire performance. References to the following types of partition are not included in this publication, as these will be dealt with in later issues.
Fully glazed partitions
Tracked, sliding or folding partitions
Shaftwalls and stairwalls
Cavity Barriers
Screens (free-standing partitions)
Partitions made up from different forms of construction

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