In India, NBC 2016 recom-
mends the sealing of breaches
created by low voltage cables,
electrical cables, pipes, ducts
and shaft sealing, etc. under
multiple clauses. However, it
does not give very comprehen-
sive detail in the 2016 edition.
This is why it is advantageous to
refer to IBC where it gives good
education on the requirements
of sealing such breaches. To
maintain the effectiveness of an
assembly,
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IBC Section 703.2 requires the
rating of penetrations to be de-
termined in accordance with
Section 714 with the purpose
of showing “that the required
fire-resistance rating is not re-
duced”.
When dealing with penetrations,
perhaps the best thing to keep
in mind is that there is no sin-
gle item that will work for each
and every situation. Penetration
firestop protection systems are
dependent on:
The type and rating of the fire-resistance-rated assembly
The type, size and material of the penetrant
The type and thickness of any insulation used on the penetrant
The material type and thickness of any sleeve used in the assembly
Any covering on the penetrant
The size and configuration of the opening
The annular space between the penetrant and the periphery of the
opening
The type of firestopping material(s) used in the penetration firestop
system
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