System No. C-AJ-2020August 28, 2002
F Rating 3 Hr
FT Ratings 2 and 3 Hr (See Item 3)
FH Rating 3 Hr
FTH Ratings 2 and 3 Hr (See Item 3)
System tested with a pressure differential of 50 Pa between the exposed and the unexposed surfaces with the higher pressure on the exposed side.
1. Floor or Wall Assembly
Min 114 mm (4-1/2 in.) thick lightweight or normal weight (100-150 pcf) concrete. Wall may also be constructed of any UL Classified Concrete Blocks*. Max diam of opening 178 mm (7 in.).See Concrete Blocks (CAZT) category in the Fire Resistance Directory for names of manufacturers.
2. Through Penetrants
One nonmetallic pipe to be installed eccentrically or concentrically within the firestop system. A nom annular space of min 0 (point contact) to max 10 mm (3/8 in.) is required within the firestop system. Pipe to be rigidly supported on both sides of wall assembly. The following types and sizes of nonmetallic pipes may be used:
A. Polyvinyl Chloride (PVC) Pipe
Nom 153 mm (6 in.) diam (or smaller) Schedule 40 cellular or solid core PVC pipe for use in vented (drain, waste or vent) piping systems.
3. Firestop System
The firestop system shall consist of the following:*Bearing the UL Classification Mark
A. Fill, Void or Cavity Material*
Nom 6 mm (1/4 in.) thick by 51 mm (2 in.) wide intumescent wrap strip indvidually wrapped around the outer circumference of the pipe with ends butted and held in place with masking tape. Butted ends in successive layers shall be offset. Wrap strip tightly against the bottom surface of floor or both surfaces of wall. The pipe size, annular space, number of wrap strip layers and resulting T Rating ares shown in the table below:
RECTORSEAL Metacaulk Wrap Strip
|Nom Pipe Diam,
|No. of Wrap
|153 (6) or smaller
||0 to 8 (0-3/8)
|102 (4) or smaller
||0 to 13 (0-1/2)
B. Steel Collar
Collar fabricated from coils of precut min 0.41 mm (0.016 in.) thick (No. 28 gauge) galv steel available from fill material manufacturer. Collar shall be nom 51 mm (2 in.) deep with 25 mm (1 in.) wide by 31 mm (1-1/4 in.) long anchor tabs on 4 in. centers for securement to the underside of floor or both surfaces of wall. In addition, collar contains retainer tabs 13 mm (1/2 in.)
wide by 19 mm (3/4 in.) long, located opposite the anchor tabs. Collar shall be wrapped over the wrap strip, with ends overlapping min 25 mm (1 in.). The retainer tabs are folded 90 deg towards the pipe to maintain the annular space around the pipe and to retain the wrap strip. Collar secured to bottom surface of the floor or both surfaces of wall at each anchor tab by means of min 6 mm (1/4 in.) diam by 31 mm (1-1/4 in.) long steel expansion bolts or steel Tapcon® concrete anchors in conjunction with 6 mm (1/4 in.) by 16 mm (5/8 in.) diam washers.
A. Fill, Void or Cavity Material*
Two layers of nom 6 mm (1/4 in.)
thick by 51 mm (2 in.) wide intumescent wrap strip indvidually wrapped around the outer circumference of the pipe with ends butted and held in place with tape or tie wire. Butted ends in successive layers shall be offset. Wrap strip recessed 13 mm (1/2 in.) from bottom of floor or 6 mm (1/4 in.) from each surface of wall. RECTORSEAL Biostop Wrap Strip
B. Fill, Void or Cavity Material*
Min 13 mm (1/2 in.) thickness of caulk applied within annulus flush with top of floor or min 6 mm (1/4 in.) of caulk applied within annulus flush with each surface of wall. RECTORSEAL Biostop 500+