How do we deal with columns and beams within and passing through compartment walls?
Where a beam is passing through a compartment wall it should be fire protected to the appropriate level up to the wall and a fire seal should be utilised to prevent passage of fire through the compartment where the beam meets the wall. This fire seal should provide the necessary level of fire resistance, including fire integrity and insulation, and should be capable of dealing with any expected differential movement. Where a beam or column forms part of a fire compartment wall there are two separate issues, [a] fire protection of the steel [b] fire separation criteria for the wall. The criteria for [b]may be the dominant feature, such that additional protection thickness/measures will then be required for the steel work in the region of the wall, in order to deal with the fire integrity and insulation requirement from Approved Document B – Appendix A. Specifically, under normal circumstances, a maximum 140ºC rise in the average temperature of the surfaces on the non- fire side of the c
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