W-J-1059

F Rating — 4 Hr

T Rating — 1/2 Hr

1. Wall Assembly — Min 5-5/8 in. thick reinforced lightweight or normal weight (100-150 pcf) concrete. Wall may also be constructed of any UL Classified Concrete Blocks*. Max diam of opening is 12-3/4 in.
See Concrete Blocks (CAZT) category in the Fire Resistance Directory for names of manufacturers.

2. Steel Wire Mesh — Cylindrical sleeve fabricated from No. 8 steel wire mesh and having a min 3 in. lap along the longitudinal seam. Length of steel mesh to be 1 in. less than thickness of wall. Steel wire mesh to be centered and formed to fit periphery of through opening.

3. Through Penetrants — One metallic pipe, conduit or tubing to be installed either concentrically or eccentrically within the firestop system. The annular space between pipes, conduits or tubing and periphery of opening shall be min 1/2 in. to max 1-1/2 in. Pipe, conduit or tubing to be rigidly supported on both sides of floor or wall assembly. The following types and sizes of metallic pipes, conduits or tubing may be used:
A. Steel Pipe — Nom 10 in. diam (or smaller) Schedule 40 (or heavier) steel pipe.
B. Iron Pipe — Nom 10 in. diam (or smaller) cast or ductile iron pipe.
C. Conduit — Nom 4 in. diam (or smaller) steel electrical metallic tubing or nom 6 in. diam (or smaller) steel conduit.
D. Copper Tubing — Nom 4 in. diam (or smaller) Type L (or heavier) copper tubing.
E. Copper Pipe — Nom 4 in. diam (or smaller) Regular (or heavier) copper pipe.

4. Firestop System — The firestop system shall consist of the following:
A. Packing Material — Min 3-1/8 in. thickness of min 4 pcf mineral wool batt insulation firmly packed into opening as a permanent form. Packing material to be recessed from both surfaces of wall as required to accommodate the required thickness of fill material.
B. Fill, Void or Cavity Material* — Caulk — Min 1-1/4 in. thickness of fill material applied within the annulus, flush with both surfaces of wall.
RECTORSEAL — Metacaulk 1000