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The Oversize Certificate is authorized for rolling steel doors for
the protection of openings in fire walls, vertical shafts and
exterior walls where the area exceeds 152 square ft., or for
openings in the above locations when width or height exceeds
13’6”x12’. The maximum dimensions for doors for standard fire
protection provided with the Oversize Fire Door Certificate are
not to exceed 56 ft. in width and 24 ft. in height.Doors are constructed to conform within requirements specified by
Underwriter’s Laboratories. Inc. (U.L.). Doors are automatic and
self-closing, Class (A) (B) (C) (D) or oversized certificate.
4 hour - Approved for doors with openings not exceeding 162 sq. ft.
in area.
Class (A) - 3 hour approved for doors in dividing fire walls with
openings not exceeding 120 sq. ft. in area.
Class (B) - 1.5 hour approved for doors, in vertical shaft openings
not exceeding 120 sq. ft. in area.
Class (C) - 0.75 hour approved for doors in a corridor or a room-partition
opening not exceeding 120 sq. ft. in area.
Class (D) - 1.5 hour approved for doors in an exterior wall opening
not exceeding 120 sq. ft. in area.
APPLICATION AND USE
Smoke-Fire-Tite Flat Slat Doors as manufactured by Alpine are ideal for use in
School Cafeteria’s, Healthcare Facilities, Hospitals, Chemical Warehouses and
Airport Concession Displays.
GENERAL
Rolling Smoke-Fire-Tite Doors manufactured by Alpine are classified for a 4 hour
rating and may also be installed in openings requiring a lower rating. They are
Underwriter’s Laboratories, Inc., (U.L.), Classified. FM Approved for Fire Rating up to
and including 3 hours.
Opening preparation, miscellaneous or structural metal work, access doors, finish or
field painting, field electrical wiring, wire, conduit, fuses and disconnect switches are
in the Scope of Work of other divisons or trades.
CURTAIN
Flat Slats constructed of interlocking, roll-formed galvanized steel, G90 coating exterior,
(G60 interior), Structural Quality Grade C, as per ASTM-653/A653-M) in 22
Gauge. Optional Gauges in 20 and 18. (Finish Options: baked enamel or powder
coated.) Curtain equiped with a bottom bar which consists of two roll-formed galvanized
steel angles measuring 2”x2”x1/8” and is designed to reinforce the bottom of
the curtain. Bottom bar equiped with a vinyl, smoke seal astragal.
BRACKETS
Made from a steel plate 1/4” thick. Ball bearing at rotating support points. Bolted to
the wall mounting angles with 1/2” fasteners. Plate supports the counterbalance
assembly and forms an end enclosure.
HOOD HEXAGON (Square or Round OPTIONAL)
Constructed from #22 gauge galvanized steel and formed to fit the contour of the
brackets. Intermediate supports are used as required in order to prevent excessive
sag. Option: stainless steel. Hood equipped with a Lintel, 2” brush seal.
GUIDES
Guides are designed using structural steel angles with a minimum
thickness of 3/16”, expansion slotted connections, and removable
bellmount curtain stops to allow for curtain maintenance without removal
of the guides. Bellmount stops shall be flush with the guide groove. Guides equipped
with a 1 1/2” brush smoke gasket.
COUNTERBALANCED ASSEMBLY
Steel pipe barrel of a size capable of carrying a curtain load with a maximum deflection
of 0.03” per ft. of door width. Heat treated helical torsion
springs encased in a steel pipe and designed to include an overload
factor of 25% to ensure minimum effort to operate. Sealed and
prelubricated ball bearings are located at rotating support points. Torsion spring
charge wheel is present for applying initial spring torque and for future adjustments.
Option: stainless steel or hot dipped galvanized. Option: High Cycle Springs can be
designed to satisfy from 10,000 through 400,000 life cycles.
OPERATION
Choice of push-up, hand chain, hand-crank, or motor operation. For optional features
see the motor operators section in this catalog.
INSTALLATION
The opening preparation and the installation of the fire door shall
be performed in strict compliance with NFPA-80.
LOCKING
Provide padlockable slide locks for latching and locking the door on the coil side of the bottom bar. Electric Interlocks recommended with motorized doors.
FINISHES (Optional)
Finish on steel to be shop coated primer, except galvanized surfaces.
Stainless steel, mill finish #2B, #4 satin, polished or mill finish.
GALVANIZING
To be applied to the guides, brackets, pipe shafts and gears in addition to
the standard specifications. Applied where conditions of extreme or
unusual atmospheric contamination is present. In accordance with ASTM: A123.
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