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
Auto-Fire-Tite IMB Doors as manufactured by Alpine are ideal for use in School
Cafeteria’s, Healthcare Facilities, Hospitals, Chemical Warehouses and Airport
Concession Displays.
GENERAL
Rolling Auto-Fire-Tite IMB Doors manufactured by Alpine are classified for up to
a 4 hour fire rating and may also be installed in openings requiring a lower rating.
They carry the label of 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.
FUNCTIONAL BENEFITS
Designed for a safer, slower, uniform closing speed of approximately six inches
per second. All resetting is completed at the floor level with a touch of the “open”
button on the control station. Refer to the motor/operator section of the catalog
to view and select the Alpine Redi-Reset Operator for your door project.
CURTAIN
Curtains shall be constructed of 7/8” thick interlocking, roll-formed Insulated
Metal Back (IMB) V7 slats. The curtain shall be equiped with a bottom bar
consisting of two roll-formed angles measuring a minimum of 2” x 2” x 1/8”, one
on each side, securely fastened to the bottom of the curtain for reinforcement
and to provide contact against the sill when closed. Option: ASTM-240 Stainless
Steel 300 Series.
BRACKETS
Made from steel plate no less than 1/4” thick. Ball bearing at rotating support
points. Bolted to guide wall angle extension, supports counterbalance
assembly and forms an end enclosure.
HOOD HEXAGON (Square or Round OPTIONAL)
Manufactured 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)
GUIDES
Guides are designed using structural steel angles with a minimum
thickness of 3/16”, 1 1/4” 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.
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