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PART 1 GENERAL
1.01
Furnish and install:
Rolling Service Doors as
manufactured by Best Rolling Manufacturer. Complete with curtain, hood,
guides, counter balance and options as specified. Not included is any structural
or miscellaneous iron, masonry or wood preparation of door opening.
1.02 Opening preparation:
Miscellaneous or structural steel,
access panels, finish or field painting, master keying cylinders, and
(electrical wires, wiring, disconnect switches, conduit) are in the scope of the
work of other sections or trades.
1.03
Mounting:
To be (Interior Face Mounted on a prepared opening)
(Interior Mounted between jambs and under lintel in a prepared opening)
(Exterior Mounted).
PART 2 PRODUCT
2.01 CURTAIN
A.
Curtain:
shall
be roll-formed inter locking curved or flat slat.
B.
Endlocks:
each end of alternate
slats to be fitted with endlocks or windlocks to act as a wearing surface in the
guides and to maintain slat alignment.
C.
Windload:
door
construction designed to satisfy windload of 50 PSF in the fully closed
position, higher windloads available.
D.
Gauge:
thickness of slat material to be as required by width of opening and windloading
requirements.
E.
Galvanizing:
zinc coated in accordance with A.S.T.M. A-525.
F.
Bottom Bar: curtain to be
reinforced with a bottom bar consisting of two steel angles, two primed
steel flat bar or extruded aluminum.
2.02
GUIDE AND WALL ANGLE
ASSEMBLY:
A.
Guides shall be primed and assembled roll-formed steel shapes
or steel
angles of 1/8”
minimum thickness. Provide windlock bars
as required to meet design windload.
B.
Depth of Guide:
to provide adequate slat penetration to satisfy specified
windloading.
2.03 SPRING COUNTERBALANCE:
A.
COUNTERBALANCE:
housed in a steel pipe of proper dimension to restrict deflection to
.03” per foot of door width.
B.
SPRINGS:
spring shall be helical torsion type designed to include an overload factor of
25 percent for maximum safety.
The helical torsion spring assembly designed for proper balance of door to
insure that effort to operate door will not exceed 35 pounds. Springs are to be
grease packed.
C. SPRING
TENSION: shall be adjusted by a wheel from the outside of the end
brackets.
D.
BALL BEARINGS:
Permanently lubricated ball or
roller bearing to be furnished at rotating support points.
2.04 BRACKET PLATES
A.
BRACKET PLATES
shall be of sufficient thickness to support
counterbalance and curtain and to act as enclosures and support for the hood.
B. DRIVE END
BRACKET PLATE: Permanently
lubricated ball or roller bearing to be furnished at rotating support points.
2.05 HOODS
A.
HOODS
shall be #24 U.S. gauge steel formed to fit around the end
brackets.
B.
REINFORCING:
to be laterally reinforced to prevent sag.
C.
INTERMEDIATE HOOD SUPPORTS:
Intermediate
hood supports will be fur nished when necessary to prevent sagging.
2.06
LOCKING
A.
SLIDE
BOLTS:
on bottom bar for
manual push-up). Prepared for padlocks (padlocks provided by others)
B. HAND CHAIN
LOCK:
locking bracket,
mounted on guide angle for chain operated doors,
C. INTEGRAL
GEARING: of motor operator
to provide locking for door.
2.07
FINISH
A.
UNGALVANIZED SURFACES:
to consist of a shop coat of rust inhibiting
metallic primer on exposed ferrous surfaces, except bearings.
2.08 OPERATION
A.
OPERATION
shall be manual push-up, gear reduced chain hoist, gear reduced
awning or wall crank, or gear reduced motor operation.
PART 3 EXECUTION
3.01 INSTALLATION
A.
INSTALLATION:
to be by BEST ROLLING MANUFACTURER authorized representative and in accordance
with Best’ standards and instructions.
PART 4 OPTIONAL FEATURES
►
SLATS also
available in (aluminum) (extruded aluminum flat slats) or (stainless steel).
Gauges available 24,22,20 or 18 slat material.
►
WEATHER-STRIPPING field applied vinyl guide seals, factory mounted
neoprene hood baffle and bottom bar astragal.
►
VISION LITES/VENTILATION HOLES shall consist of cutouts in the flat
slat 6” x 1”. Clear 1/8" lexan can be applied when vision lites are required.
►
LOCKING can be by cylinder locks on the bottom bar. BEST recommends motor
operated doors to have an interlock system to disable the door from operating
until unlocked.
►
PASS DOOR Furnish 3-0” x 7-0” (914
mm x 2134 mm) hollow metal pedestrian door within rolling door. Hollow metal
door frame is to be hinged to rolling door guide so that frame and metal door
will swing clear of opening when desired. Hardware to include heavy duty hinges
and lock set with cylinder lock.
►
PIGGY
BACK DOOR Rolling Door and
Rolling Grille Combinations (Door/Grille Combo)
►
BARCKET PLATES can be made of (galvanized steel).
►
GUIDES angles
can be
galvanized steel, aluminum or stainless steel angles. Furnish guide
weatherstripping on outside or both sides -inside and outside- to seal against
flat slat.
►
HOODS can be fabricated of galvanized steel, aluminum or stainless steel.
Furnish neoprene
► HOOD
BAFFLE in hood to
minimize air infiltration.
►
MOTOR OPERATORS
shall be Model
GH,H,MH, OR J.
► HIGH
CYCLE
SPRINGS (for motorized doors) design is to satisfy 50,000 cycles
►
SAFETY EDGE shall be electric or pneumatic.
►
FINISHES are
available galvanized, primed, prepainted or stainless steel 2B or 4B finish.
Aluminum shall be mill, anodized or prepainted finish.
► POWDER
COAT provide a
powder coat colored finish on both sides of the roll formed slat. Multiple
colors are available. Please specify manufacture’s number for custom colors.
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