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1. Wall
Assembly — Min 4-1/2 in. thick reinforced lightweight or normal weight
(100-150 pcf) concrete floor. Floor may also be constructed of any min 6 in.
thick hollow-core Precast Concrete Units*. Max diam of opening is 4-1/2
in.
See
Concrete Blocks (CAZT) category in the Fire Resistance Directory for names
of manufacturers.
2.
Cables — Aggregate cross-sectional area of cables within opening to be min 8
percent to max 48 percent of the aggregate cross-sectional area of the opening.
Cables to be rigidly supported on both sides of floor assembly. Any combination
of the following types and sizes of cables may be used:
A. Max 200
pair No. 24 AWG (or smaller) copper conductor cable with polyvinyl chloride
(PVC) jacketing and insulation.
B. Max 1/C
- 750 kcmil power cable with copper conductors and cross-linked polyethylene (XLPE)
jacketing.
C. Max 3/C
No. 3/0 AWG (or smaller) aluminum or copper conductor service entrance cable
with PVC insulation and jacketing.
D. Max 3/C
No. 8 AWG (or smaller) nonmetallic sheathed (Romex) cable with copper conductors
and PVC insulation and jacketing.
E. Max 7/C
No. 2/0 AWG (or smaller) multiconductor power and control cables with XLPE or
PVC insulation and XLPE or PVC jacket.
F. Max RG/U
(or smaller) coaxial cable with fluorinated ethylene insulation and jacketing.
G. Max
62.5/48 fiber optic cable with PVC insulation and jacketing.
H. Max 4 pair
No. 24 AWG (or smaller) copper conductor data cable with Hylar insulation and
jacketing.
3.
Firestop System — The firestop system shall consist of the following:
A.
Firestop Device* — Threaded steel halves incorporating split nuts and split
washers sized to fit the specific diam of the opening. Device shall be installed
around cables in accordance with the accompanying installation instructions.
Device provided in nom 1, 2 and 4 in. sizes. Max diam of opening in floor for
nom 1, 2 and 4 in. size device is 1-1/4, 2-7/16 and 4-1/2 in., respectively.
UNIQUE FIRE
STOP PRODUCTS INC
— Split Sleeve
A1.
Firestop Device* (Not Shown) — As an alternate to Item 3A, threaded steel
sleeve device incorporating flat washers secured by threaded couplers. Device
shall be installed in accordance with the accompanying installation
instructions. Device provided in nom 1, 2 and 4 in. sizes. Max diam of opening
in floor for nom 1, 2 and 4 in. size device is 1-1/4, 2-7/16 and 4-1/2 in.,
respectively.
UNIQUE FIRE
STOP PRODUCTS INC
— Threaded Sleeve
B. Packing
Material — Min 4 pcf mineral wool batt insulation compressed and tightly
packed to fill device to min 3 in. depth with a min 2 in. of the depth within
the confines of the floor thickness. Packing material recessed from top edge of
device as required to accommodate fill material (Item 3C).
C. Fill,
Void or Cavity Material* — Putty — Min 1/2 in. thickness of fill
material applied within annulus, flush with top edge of steel sleeve.
UNIQUE FIRE
STOP PRODUCTS INC
—
*Bearing the
UL Classification Mark |
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