XHEZ.C-AJ-2935 - Through-penetration Firestop
Systems
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Through-penetration Firestop Systems
System No. C-AJ-2935

March 31, 2022
ANSI/UL1479 (ASTM E814)
F Rating — 2 HrT Rating — 2 Hr

System tested with a pressure differential of 2.5 Pa between the exposed and the unexposed surfaces with the higher pressure on theexposed side.

1. Floor or Wall Assembly — Min 114 mm (4-1/2 in.) thick reinforced normal weight (2320-2480 kg/m3 or 145-155 pcf) concrete. Wall may
also be constructed of any UL Classified Concrete Blocks*. Max diam of opening shall be 200 mm (7-7/8 in.).
See Concrete Blocks (CAZT) category in the Fire Resistance Directory for names of manufacturers.

2. Through Penetrant — One nonmetallic pipe or tubing installed concentrically within the opening. The annular space within the firestop
system shall be a nom 43 mm (1-3/4 in.). Penetrant to be rigidly supported on both sides of floor or wall. The following types and sizes ofnonmetallic pipes or tubing may be used:
A. Polyvinyl Chloride (PVC) Pipe — Nom 4 in. (102 mm) diam (or smaller) Schedule 40 solid or cellular core PVC pipe for use inclosed (process or supply) piping systems.

3. Firestop System — The firestop system shall consist of the following:
A. Fill, Void or Cavity Materials* — Putty — Min 5 mm (1/4 in.) thick by 60 mm (2-3/8 in.) deep of fill material applied within theannulus, extending 10 mm (7/16 in.) beyond the top surface of floor or both surfaces of wall.
FURUKAWA TECHNO MATERIAL CO LTD — Firestop Sheet-BPB. Fill, Void or Cavity Materials* — Mortar — Min 114 mm (4-1/2 in.) thickness of fill material installed flush with both surfaces offloor or wall to completely fill the gap between all the penetrants and the wall/floor opening. Mortar to be mixed at a rate of 1 partdry mixture to 0.8-1 part water by weight in accordance with the installation instructions supplied with the product.
FURUKAWA TECHNO MATERIAL CO LTD — Firestop Mortar* Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such asCanada), respectively.

Last Updated on 2022-03-31

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