Junction of compartment wall or compartment floor with other walls

Compartment walls should be able to accommodate deflection of the floor, when exposed to fire, by either of the following means. a. Between the wall and floor, provide a head detail that is capable of maintaining its integrity while deforming. b. Design the wall so it maintains its integrity by resisting the additional vertical load from the floor above. Where compartment walls are located within the middle half of a floor between vertical supports, the deflection may be assumed to be 40mm unless a smaller value can be justified by assessment. Outside this area, the limit can be reduced linearly to zero at the supports. For steel beams that do not have the required fire resistance, reference should be made to SCI Publication P288