where do we apply fire rated sealant in buildings?

Question

hi there.i want to know where to apply fire rated sealnt in buildings?and how does it behave in case of fire?thx

Answer 1

Usually around pipes or conduit passing through holes made in fire-rated slabs or walls (such as shafts or stairwells). When exposed to heat that would be high enough to damage a metal/pvc pipe that is going through the hole, the sealant expands and hardens, maintaining the integrity of the fire-rated construction (wall, slab, etc.)

Answer 2

Remember 911, The collapse of towers.
Those columns in there had some protection, but not enough.

The new steel colums in high rises have a "heat sealant' to shield heat and avoid overheating which would cause bending and buckling and eventual collapse of building. This material acts as an insulator and a reflector to keep the fire's effect from the main support columns and structural supports.