Page 106 - UL_Report On_Part 1

95 IITGN-UL/Façade 96 IITGN-UL/Façade

Another issue associated with glass wool usage as fire stop,
as observed, is that the compression of the wool specified
in the listed system’s installation instructions is sometimes
not achieved. Without sufficient compression, a gap may
develop when joints expand, impairing the integrity of the
fire stop system. The failure of fire stop in the present tests
might be attributed to insufficient compression.

Thermocouples placed at various levels within the
compartment were connected to DAQ placed at first floor
level through cables running through deck slab and masonry
walls. All base level thermocouple cables running through
deck slab were protected within 1 inch diameter PVC pipes and
then through masonry partition walls having 0.5 inch
diameter pipes to protect from fire. All roof level
thermocouples were running beneath cement boards which
were exposed to direct exposure on failure of cement boards.
These exposed cables were coated with Hilti CP 678 cable
coating to prevent propagation of fires along internal cables.
Cables coated with CP 678 exhibited increased protection in
the event of fire and helped in preventing loss of data.
Cables should be clean and must be dry and free from dust,
grease or oil. Thoroughly mix the CP 678 and apply to all areas
Image 44: Failure of fire stop (mineral wool) due to insufficient compression of the cables and cable run over the required length using
paint brush, roller or airless spray gun with recommended
nozzle and spray angle. Sufficient time should be given for
paint to dry and cure.