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1. FLOOR/CEILING OR WALL ASSEMBLY: Use a two-hour fire-rated floor/ceiling or wall assembly consisting of minimum 6-inch (152 mm) thick
normal weight (100-150 pcf (1600-2400 kg/m³)) reinforced concrete or hollow or concrete filled Concrete Masonry Units (CMU).  Create a round
through-opening with a maximum diameter of 4-inches (102 mm).
2. PENETRATING ITEM: Install one of the following penetrating items:
• Maximum 1 inch (25 mm) Cast Iron Pipe
• Maximum 1 inch (25 mm) Rigid Steel Conduit or EMT
• Maximum 1 inch (25 mm) Schedule 40 (or thicker) Steel Pipe
• Maximum 1 inch (25 mm) copper tubing
Install penetrating item centered or offset maximum 2-7/8-inches (73 mm) in the through-opening created in the floor/ceiling or wall assembly (Item 1).
3. PACKING MATERIAL: Install minimum 4 pcf (64 kg/m³) density mineral wool batt insulation in the annular space, compressed 25% around the
penetrating item (Item 2) as follows:
• Floor Ceiling Assembly-Install nominal 5-3/4-inch (146 mm) layer recessed 1/4-inch (6 mm) from the bottom of the floor/ceiling assembly (Item 1)
• Wall Assembly: Install nominal 5-1/2-inch (140 mm) layer recessed 1/4-inch (6 mm) from both surfaces of the wall assembly (Item 1).
4. CERTIFIED COMPANY:  Hilti Corporation
CERTIFIED PRODUCT:  Sealant
MODEL:  FS-ONE Intumescent Firestop Sealant
Apply nominal 1/4-inch (6 mm) layer of FS-ONE Intumescent Firestop Sealant to fill the 1/4-inch (6 mm) void left after installing the packing material
(Item 3).  After installing the insulation (Item 5) around the penetrating item (Item 2), apply a nominal 1/4-inch (6 mm) bead of FS-ONE Intumescent
Firestop Sealant in the longitudinal seam of the insulation and a 1/2-inch (13 mm) bead at the insulation (Item 5) and floor/ceiling or wall assembly
(Item 1) interface.
5. INSULATION: Install one layer of 36-inch (914 mm) long, 8 pcf (128 kg/m³) density  hollow cylindrical mineral wool pipe insulation around penetrating
item (Item 1) installed below the floor/ceiling assembly (Item 1) or on both sides of the wall assembly (Item 1).  If the floor/ceiling or wall assembly
(Item 1) is greater than 6-inches then the 36-inch (914 mm) insulation may be reduced by the value of the increase in thickness.  When this method is
used, the glass fiber insulation (Item 6) is always required on the top side of the floor/ceiling assembly (Item 1).
6. GLASS FIBER INSULATION: Install 1/2-inch (13 mm) thick, 12-inch (305 mm) long hollow cylindrical glass fiber insulation with self-sealing tape
around the penetrating item (Item 2) on the top surface of the floor/ceiling assembly (Item 1).  Glass fiber insulation is not required for wall
assemblies (Item 1).  When the floor/ceiling assembly (Item 1) exceeds 8 inches (203 mm) in thickness, the glass fiber insulation is not required;
however, the insulation (Item 5) must be 36-inches long and may not be reduced as specified in Item 5.
7. STAINLESS STEEL CLAMP: Install 1/2-inch (13 mm) wide stainless steel hose clamps to secure insulation (Item 5) around penetrating item (Item
2).  Install hose clamps spaced 2-inches (51 mm) from the ends of the insulation and 8-inches (203 mm) on center between.
8. RISER CLAMP: Install 1-inch (25 mm) galvanized steel riser clamp around penetrating item (Item 2) flush with the end of the insulation (Item 5) (not
required on horizontal penetration).
9. STEEL PLATE: Install 4-inch X 4-inch steel plate between the insulation (Item 5) and the riser clamp (Item 8) to prevent the insulation (Item 5) from
sagging (not required on a horizontal penetration).
Reproduced by HILTI, Inc.
Courtesy of  Intertek Group
February 08, 2012
Hilti Corporation
Design Number HI/PHV 120-04
Through Penetration
FS-ONE Intumescent Firestop Sealant
ASTM E 814 (2011) & UL 1479 (2010)
F Rating: 2 Hours
T Rating: 2 Hours
H Rating: 2 Hours
CAN/ULC S115 (2011) at 2.5Pa
FTH: 2 Hours
HI/PHV 120-04