FIRE-RESISTANCE-RATED
STUD WALL ASSEMBLY
MEMBRANE PENETRATION
(THROUGH ONLY ONE SIDE
OF ASSEMBLY)
MEMBRANE PENETRATION FIRESTOP
MEMBRANE PENETRATION FIRESTOP
SYSTEM – INCLUDES:
• FIRE-RESISTANCE-RATED WALL OR
HORIZONTAL ASSEMBLY
• PENETRATING ITEM – PASSING
THROUGH ONE SIDE OF ASSEMBLY
• MATERIALS/DEVICES INSTALLED TO
RESIST SPREAD OF FIRE INTO THE
ASSEMBLY
(Fig 2.6 Membrane Penetration, Firestop and Firestop System)
THROUGH PENETRATION
A breach in both sides of a floor, floor-ceiling or wall assembly to
accommodate an item passing through the breaches. Figure 2.7
shows an example of a through penetration and how it differs from
a membrane penetration due to the fact that it passes entirely
through the assembly. Through penetration definition is included in
both IBC and NBC.