F Rating — 3 Hr

T Rating — 1/4 Hr

    1. Floor or Wall Assembly — Min 4-1/2 in. thick reinforced lightweight or normal weight (100-150 pcf) concrete. Wall may also be constructed of any UL Classified Concrete Blocks*. Floor may also be constructed of any min 6 in. thick UL Classified hollow-core Precast Concrete Units* . Max diam of opening in solid lightweight or normal weight concrete floor or wall is 14 in. Max diam of opening in hollow-core precast concrete unit floor is 7 in.

    See Concrete Blocks (CAZT) and Precast Concrete Units (CFTV) categories in the Fire Resistance Directory for names of manufacturers.

    2. Steel Pipe — Nom 10 in. diam (or smaller) Schedule 10 (or heavier) steel pipe. One pipe to be installed either concentrically or eccentrically within the firestop system. The annular space shall be min 0 in. to max 3-1/4 in. Pipe to be rigidly supported on both sides of floor or wall assembly.
    3. Firestop System — The firestop system shall consist of the following:
      A. Packing Material — Mineral wool batt insulation firmly packed into opening as a permanent form. Packing material to be recessed from top surface of floor or from both surfaces of wall as required to accommodate the required thickness of fill material. As an option to the above, backer rod and/or foamed plastic backer material may be used. When floor is constructed of hollow-core precast concrete units, packing material is to be installed symmetrically on both sides of floor.
      B. Fill, Void or Cavity Material* — Caulk — Min 1/2 in. thickness of fill material applied within the annulus, flush with top surface of floor or with both surfaces of wall. At the point contact location between pipe and concrete, a min 1/2 in. diam bead of fill material shall be applied at the concrete/pipe interface on the top surface of floor and on both surfaces of wall. When floor is constructed of hollow-core precast concrete units, fill material is to be installed symmetrically on both sides of floor, flush with floor surfaces.

      RECTORSEAL — Metacaulk 950


XHEZ.C-AJ-1038 C-AJ-1038 XHEZ 613495002 System ACTIVE 19990111 19990111 613495002