USACE / NAVFAC / AFCESA / NASA UFGS-08 33 23 (July 2007)
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Preparing Activity: NASA Superseding
UFGS-08 33 23.00 40 (June 2006)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 08 33 23
OVERHEAD COILING DOORS
07/07
NOTE: This specification covers the requirements for manually-operated, power-operated
overhead coiling doors, overhead coiling counter doors.
Drawings must indicate door location, opening dimensions, wall thickness, side
room and headroom clearances, structural framing above the door track, jamb
conditions, location and type of electrical service, and remote-control stations,
elevations, sections, details, materials, finishes, conditions for anchorage
and support of each door. See limitation on the use of revolving doors in NFPA
101, chapter 5, section 2.1.3.2.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable item(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
This guide specification includes tailoring options for AFCESA, NASA, NAVFAC,
USACE, and varying conditions relating to equipment selection. Selection or
deselection of a tailoring option (select view-tailoring options) will include
or exclude that option in the section. Specific project editing is still required
for the resulting section.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)ASCE/SEI 7-05(2006) Minimum Design Loads for Buildings and Other Structures, Including Supplement No. 1][AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS (ASHRAE)ASHRAE FUN IP(2005) Fundamentals Handbook, I-P Edition][ASME INTERNATIONAL (ASME)ASME B29.400(2001; R 2008) Combination, "H" Type Mill Chains, and Sprockets][ASTM INTERNATIONAL (ASTM)ASTM A 153/A 153M(2005) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel HardwareASTM A 27/A 27M(2008) Standard Specification for Steel Castings, Carbon, for General ApplicationASTM A 307(2007b) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile StrengthASTM A 36/A 36M(2008) Standard Specification for Carbon Structural SteelASTM A 48/A 48M(2003; R 2008) Standard Specification for Gray Iron CastingsASTM A 53/A 53M(2007) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessASTM A 653/A 653M(2008) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip ProcessASTM A 780(2001; R 2006) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized CoatingsASTM A 924/A 924M(2008a) Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip ProcessASTM D 2000(2008) Standard Classification System for Rubber Products in Automotive ApplicationsASTM E 330(2002) Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure DifferenceASTM E 84(2008a) Standard Test Method for Surface Burning Characteristics of Building MaterialsASTM F 568M(2007) Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners][NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)NEMA ICS 2(2000; Errata 2002; R 2005; Errata 2006) Standard for Industrial Control and Systems: Controllers, Contractors, and Overload Relays Rated Not More than 2000 Volts AC or 750 Volts DC: Part 8 - Disconnect Devices for Use in Industrial Control EquipmentNEMA ICS 6(1993; R 2006) Standard for Industrial Controls and Systems EnclosuresNEMA MG 1(2007; Errata 2008) Standard for Motors and GeneratorsNEMA ST 1(1988; R 1997) Standard for Specialty Transformers (Except General Purpose Type)][NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)NFPA 70(2007; AMD 1 2008) National Electrical Code - 2008 EditionNFPA 80(2006; Errata 2008) Standard for Fire Doors and Other Opening Protectives][UNDERWRITERS LABORATORIES (UL)UL 674(2003; Rev thru Aug 2008) Standard for Electric Motors and Generators for Use in Division 1 Hazardous (Classified) LocationsUL Bld Mat Dir(2008) Building Materials Directory]1.2 DESCRIPTION
NOTE: To provide maximum protection from the weather, exterior doors will normally
be installed on the interior face of the wall. Weather protection features
should be considered for doors installed on the exterior face of the wall.
The appropriate design and fire rating classification will be selected. Depending
on the size of the fire door, labeling and oversize certificates and/or labels
will vary with the individual manufacturers. Generic installation of a rolling
fire door, as shown in NFPA 80 is applicable to masonry type fire walls and
the manufacturer's listed procedures, or the authority having jurisdiction.
Other wall construction listings such as non-masonry (drywall) will be accomplished
per the individual manufacturer's listed procedures or as approved by the authority
having jurisdiction. Manufacturer's catalogs should be consulted for required
headroom and side room.
The following information must be indicated on the project drawings:
a. Size of door openings.
b. Type and details of door frames or jambs plus side room, jamb loads and
door curtain deflection under pressure load.
c. All wire and conduit from source of power to the operators and/or controls
for electric power operated doors.
Overhead coiling doors to be counterbalanced doors by methods of manufacturer's standard mechanism with an adjustable-tension,
steel helical torsion spring mounted around a steel shaft and contained in a spring barrel connected to top of
curtain with barrel rings. Use grease-sealed or self-lubricating bearings for rotating members. Doors to be
coiling type, with interlocking slats, complete with anchoring and door hardware, guides, hood, and operating
mechanisms, and designed for use on openings as indicated.
Fire-rated door assemblies must bear the Underwriters Laboratories, Warnock Hersey, Factory Mutual or other nationally
recognized testing laboratory label for [Class [_____] rating.] [the rating listed on the drawings.] Provide
a permanent label for each door showing the manufacturer's name and address and the model/serial number of the
door.
Oversized fire-rated door assemblies must be provided with a listing agency oversize label, or a certificate
signed by an official of the manufacturing company certifying that the door and operator have been designed to
meet the specified requirements.
1.3 PERFORMANCE REQUIREMENTS
1.3.1 Wind Loading
Design and fabricate door assembly to withstand the wind loading pressure of at least [_____] kilopascal pounds
per square foot with a maximum deflection of 1/120 of the opening width. Provide test data showing compliance
with ASTM E 330. Sound engineering principles may be used to interpolate or extrapolate test results to door
sizes not specifically tested Complete assembly must meet or exceed the requirements of ASCE/SEI 7-05.
1.3.2 Fire-Rated Doors, Frames, and Hardware
Provide fire-rated doors, frames, and hardware which are tested, rated, and labeled in accordance with Underwriters
Laboratories, Factory Mutual or Warnock Hersey. The labels must indicate the rating in hours, per NFPA 80 of
duration of exposure to fire, with a letter following the hourly rating to designate the location for which the
assembly is designed and the temperature rise on the unexposed face of the door at the end of 30 minutes of fire
exposure.
Provide and attach metal UL labels to each item of hardware in accordance with requirements specified in the
UL Bld Mat Dir.
1.3.3 Oversized Coiling Fire-rated Door Assemblies
Where fire-rated doors and frames exceed the size for which testing and labeling services are offered, furnish
certificates of inspection from the UL, Factory Mutual or Warnock Hersey. State within certificates that except
for size; doors, frames, and hardware are identical in design, materials, and construction to a door that has
been tested and rated..
1.3.4 Operational Cycle Life
NOTE: The particular needs of the project are those that will be used to determine
frequency of usage. The normal operating frequency for overhead coiling doors
is 10 cycles per day. Typical rolling doors are designed for 15,000-20,000
spring cycles. If doors are expected to operate at a significantly higher frequency,
the number of cycles per day or hour should be specified.
All portions of the door, hardware and operating mechanism that are subject to movement, wear, or stress fatigue
must be designed to operate through a minimum number of [10] [_____] cycles per [day] [hour]. One complete cycle
of door operation is defined as when the door is in the closed position, moves to the fully open position, and
returns to the closed position.
1.4 SUBMITTALS
NOTE: Review Submittal Description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] Submit the following
in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
SD-02 Shop Drawings
Provide fabrication drawings that show complete assembly with hardware and framing details
for the following items:
Overhead Coiling Doors
Counterbalancing Mechanism
Manual Door Operators
Electric Door Operators
Bottom Bar
Guides
Mounting Brackets
Overhead Drum
Hood
Painting
Submit Installation Drawings in accordance with paragraph entitled, "Overhead Coiling Door Assemblies,"
of this section.
SD-03 Product Data
Submit manufacturer's catalog data for the following items listing all accessories including
supports, locks and latches, and weather stripping.
Overhead Coiling Doors
Hardware
Counterbalancing Mechanism
Manual Door Operators
Electric Door Operators
Fire-Rated Door Assembly
SD-05 Design Data
Submit equipment and performance data for the following items in accordance with the paragraph
entitled, "Performance Requirements," of this section.
Overhead Coiling Doors
Hardware
Counterbalancing Mechanism
Manual Door Operators
Electric Door Operators
Fire-Rated Door
SD-10 Operation and Maintenance Data
Submit Operation and Maintenance Manuals for Overhead Coiling Door Assemblies , including the
following items:
Materials
Devices
Procedures
Manufacture's Brochures
Parts Lists
Cleaning
1.5 OVERHEAD COILING DOOR DETAIL SHOP DRAWINGS
Provide installation drawings for overhead coiling door assemblies which show elevations of each door type, shape
and thickness of materials, finishes, details of joints and connections, and details of guides and fittings,
rough opening dimensions, location and description of hardware, anchorage locations, and counterbalancing mechanism
and door operator details. Show locations of replaceable fusible links wiring diagrams for power, signal and
controls. Include a schedule showing the location of each door with the drawings.
Contractor must submit [6] [_____] copies of the Operation and Maintenance Manuals 30 calendar days prior to
testing the Overhead Coiling Door Assemblies. Update and resubmit data for final approval no later than 30 calendar
days prior to contract completion.
Provide operation and maintenance manuals which are consistent with manufacturer's standard brochures, schematics,
printed instructions, general operating procedures, and safety precautions. Provide test data that is legible
and of good quality.
1.6 WARRANTY, OPERATION AND MAINTENANCE DATA
Submit Operation and Maintenance Manuals for Overhead Coiling Door Assemblies, including the following items:
Materials
Devices
[Manual Door Operators]
Electric Door Operators
[Hood]
Counterbalancing Mechanism
Painting
Procedures
Manufacture's Brochures
Parts Lists
Contractor must furnish a written guarantee that the helical spring and counterbalance mechanism are free from
defects in material and workmanship and that they will remain so for not less than [two] [_____] years after
completion and acceptance of the project.
Contractor must warrant that upon notification by the Government, he will immediately make good any defects in
material, workmanship, and door operation within the same time period covered by the guarantee, at no cost to
the Government.
1.7 DELIVERY AND STORAGE
Delivered doors to the jobsite wrapped in a protective covering with the brands and names clearly marked thereon.
Store doors in a dry location that is adequately ventilated and free from dirt and dust, water, and other contaminants,
and in a manner that permits easy access for inspection and handling.
PART 2 PRODUCTS
2.1 OVERHEAD COILING DOORS
2.1.1 Curtain Materials and Construction
[Provide curtain slats which are fabricated from steel sheets conforming to ASTM A 653/A 653M, Grade A, with
the additional requirement of a minimum yield point of 228 Megapascal. 33,000 psi. Provide sheets which are
galvanized in accordance with ASTM A 653/A 653M and ASTM A 924/A 924M.]
[Provide curtain slats which are fabricated from Stainless steel sheets conforming to ASTM A 666, Type 304; sheet
thickness of 0.64 mm0.025 inch and as required to meet requirements.]
[Provide curtain slats which are fabricated from aluminum sheets conforming to ASTM B 209 (ASTM B 209M) sheet
or ASTM B 221 (ASTM B 221M) extrusions, alloy and temper standard with manufacturer for type of use and finish
indicated; thickness of 1.27 mm0.050 inch and as required to meet requirements.]
Fabricate doors from interlocking cold-rolled slats, with section profiles as specified, designed to withstand
the specified wind loading. Provide slats which are continuous without splices for the width of the door.
[Provide slats filled with manufacturer's standard thermal insulation complying with maximum flame-spread and
smoke-developed indexes of 75 and 450, respectively, according to ASTM E 84. Enclose insulation completely within
slat faces on interior surface of slats.]
2.1.2 Non-Insulated Curtains
NOTE: Where physical abuse of the doors may be a problem, the minimum decimal
thickness of material (bare metal) should be specified for the various door
widths. If physical abuse is not a factor, the decimal thickness of material
may be determined by wind pressure alone and the references to door width will
be deleted. The referenced bare metal thicknesses do not include galvanization
or paint coating thicknesses.
Form Curtains from manufacturer's standard shapes of interlocking slats.
2.1.3 Insulated Curtains
NOTE: Several manufacturers can provide insulated slats that comply with all
specified requirements. Check manufacturers' literature for information on
R-value. At least one manufacturer makes an oversize slat that provides increased
insulation.
Do not specify insulated slats for fire doors.
Form Curtains from manufacturer's standard shapes of interlocking slats. Supply slat system with a minimum R-value
of 4 [_____] when calculated in accordance with ASHRAE FUN IP. Slats to consist of a [urethane] [polystyrene]
core not less than 17 mm 11/16 inch thick, completely enclosed within metal facings. Exterior face of slats
must be the same gauge as specified for curtains. Interior face must be not lighter than 0.56 mm 0.0219 inches
. The insulated slat assembly is to have a flame spread rating of not more than 25 and a smoke development factor
of not more than 50 when tested in accordance with ASTM E 84.
2.1.4 Curtain Bottom Bar
Curtain bottom bars must be pairs of angles from the manufacturer's standard steel, stainless and aluminum extrusions
not less than 50 by 50 millimeter by 4.8 millimeter. 2.0 by 2.0 inches by 0.188 inch. Steel extrusions must
conform to ASTM A 36/A 36M. Stainless steel extrusions conforming to ASTM A 666, Type 304. Aluminum extrusions
conforming to ASTM B 221 or(ASTM B 221M). Galvanize angles and fasteners in accordance with ASTM A 653/A 653M
and ASTM A 924/A 924M. Coat welds and abrasions with paint conforming to ASTM A 780.
2.1.5 Vision Panels
NOTE: Drawings must indicate the size and location of vision panels.
Provide complete manufacturer's standard vision panels assembly consist of clear acrylic glazing panels or fire-rated
glass as required for the type door set in a neoprene channel with a galvanized-steel frame not less than 0.91
millimeter 0.0359-inch uncoated thickness.
2.1.6 Locks
Provide end and/or wind locks of cast steel conforming to ASTM A 27/A 27M, Grade B; galvanized in accordance
with ASTM A 653/A 653M, ASTM A 153/A 153M and ASTM A 924/A 924M and secured at every other curtain slat.
2.1.7 Weather Stripping
Weather-stripping at the door-head and jamb must be 3.2 millimeter 1/8-inch thick sheet of natural or neoprene
rubber with air baffles, secured to the insides of hoods with galvanized-steel fasteners through continuous galvanized-steel
pressure bars at least 15.9 millimeter 5/8-inch wide and 3.2 millimeter 1/8-inch thick.
Threshold weather-stripping must be 3.2 millimeter 1/8-inch thick sheet natural or neoprene rubber secured to
the bottom bars.
Provide weather-stripping of natural or neoprene rubber conforming to ASTM D 2000.
2.1.8 Locking Devices
Slide Bolt to engage through slots in tracks for locking by padlock, located on both left and right jamb sides,
operable from coil side.
Locking Device Assembly which includes cylinder lock, spring-loaded dead bolt, operating handle, cam plate, and
adjustable locking bars to engage through slots in tracks.
[Provide Chain Lock Keeper which suitable for a standard padlock.]
2.1.9 Safety Interlock
Equip power-operated doors with safety interlock switch to disengage power supply when door is locked.
2.1.10 Overhead Drum
[Fabricate drums from nominal 0.71-mm0.028-inch thick, hot-dip galvanized steel sheet with G90 (Z275) zinc coating,
complying with ASTM A 653/A 653M.]
[Fabricate drums from nominal 0.64-mm0.025-inch thick stainless-steel sheet, Type 304, complying with ASTM A
666.]
[Fabricate drums from nominal 1.02-mm 0.040-inch thick aluminum sheet complying with ASTM B 209 (ASTM B 209M),
of alloy and temper recommended by manufacturer and finish for type of use and finish indicated.]
2.2 HARDWARE
All hardware must conform to ASTM A 153/A 153M, ASTM A 307, ASTM F 568M, and ASTM A 27/A 27M.
2.2.1 Guides
NOTE: Drawings must indicate jamb-guide anchorage details.
Fabricate curtain jamb guides from the manufacturer's standard angles or channels of same material and finish
as curtain slats unless otherwise indicated, with sufficient depth and strength to retain curtain, to allow curtain
to operate smoothly, and to withstand loading. Slot bolt holes for track adjustment.
2.2.2 Equipment Supports
Fabricate door-operating equipment supports from the manufacturer's standard steel shapes and plates conforming
to ASTM A 36/A 36M, galvanized in accordance with ASTM A 653/A 653M and ASTM A 924/A 924M. Size the shapes and
plates in accordance with the industry standards for the size, weight, and type of door installation..
2.3 COUNTERBALANCING MECHANISM
Counterbalance doors by means of manufacturer's standard mechanism with an adjustable-tension, steel helical
torsion spring mounted around a steel shaft and contained in a spring barrel connected to top of curtain with
barrel rings. Use grease-sealed or self-lubricating bearings for rotating members.
2.3.1 Brackets
Provide the manufacturer's standard mounting brackets of either cast iron or cold-rolled steel with one located
at each end of the counterbalance barrel conforming to ASTM A 48/A 48M.
2.3.2 Counterbalance Barrels
Fabricate spring barrel of manufacturer's standard hot-formed, structural-quality, welded or seamless carbon-steel
pipe, conforming to ASTM A 53/A 53M, of sufficient diameter and wall thickness to support rolled-up curtain without
distortion of slats and to limit barrel deflection to not more than 2.5 mm per meter 0.03 inch per foot of span
under full load.
2.3.3 Spring Balance
NOTE: Delete the paragraph heading and the following paragraphs if Metal Rolling
Counter Doors are not being used.
One or more oil-tempered, heat-treated steel helical torsion springs installed within the barrel capable of producing
sufficient torque to assure easy operation of the door curtain. Provide and size springs to counterbalance weight
of curtain, with uniform adjustment accessible from outside barrel. Secure ends of springs to barrel and shaft
with cast-steel barrel plugs.
2.3.4 Torsion Rod for Counter Balance
Fabricate rod from the manufacturer's standard cold-rolled steel, sized to hold fixed spring ends and carry torsional
load.
2.4 MANUAL DOOR OPERATORS
NOTE: Select desired method of manual operation paragraph from the following
three paragraphs and delete the remaining two paragraphs.
[2.4.1 Manual Push-Up Door Operators
Equip door with manufacturer's recommended lifting handles, locks, and latches. Adjust counterbalance mechanisms
so that the required lift or pull for operation does not exceed 11 kilogram 25 pounds unless another type of
door operator is indicated. Design operating mechanisms so that the curtain can be stopped at any point in its
upward or downward travel and will remain in that position until pushed to the fully open or closed position.
][2.4.2 Manual Chain-Hoist Door Operators
Provide door operators which consist of an endless steel hand chain, chain-pocket wheel, guard, and a geared
reduction unit [of at least a 3 to 1 ratio] [with a maximum[ 111 N 25 lbf] [ 133 N 30 lbf]] required pull for
operation must not exceed 16 kilogram35 pounds.
Provide chain hoists to have a self-locking mechanism allowing the curtain to be stopped at any point in its
upward or downward travel and to remain in that position until moved to the fully open or closed position. Provide
hand chains of cadmium-plated alloy steel conforming to ASME B29.400. Yield point of the chain must be at least
three times the required hand-chain pull.
Provide chain sprocket wheels of cast iron conforming to ASTM A 48/A 48M.
][2.4.3 Manual Crank-Hoist Door Operators
Provide door operators which consist of crank and crank gearbox, steel crank drive shaft, and gear-reduction
unit [of at least a 3 to 1 ratio] [with a maximum[ 111 N 25 lbf] [ 133 N 30 lbf]] force to turn crank. Fabricate
gearbox to be oil tight and to completely enclose operating mechanism. Provide manufacturer's standard crank-locking
device having a self-locking mechanism allowing the curtain to be stopped at any point in its upward or downward
travel and remain in that position until moved to the fully open or closed position.
]2.5 ELECTRIC DOOR OPERATORS
NOTE: Delete the paragraph heading and the following paragraphs if electric
door operation is not required.
Refer to Division 16, "Electrical," for electrical requirements.
Provide electrical wiring and door operating controls conforming to the applicable requirements of NFPA 70.
Electric door-operator assemblies must be the sizes and capacities recommended and provided by the door manufacturer
for specified doors. Assemblies must be complete with electric motors and factory-prewired motor controls, starter,
gear reduction units, solenoid-operated brakes, clutch, remote-control stations, manual or automatic control
devices, and accessories as required for proper operation of the doors.
Design the operators so that motors may be removed without disturbing the limit-switch adjustment and affecting
the emergency auxiliary operators.
Provide a manual operator of crank-gear or chain-gear mechanisms with a release clutch to permit manual operation
of doors in case of power failure. Arrange the emergency manual operator so that it may be put into and out
of operation from floor level, and its use will not affect the adjustment of the limit switches. Provide an
electrical or mechanical device which will automatically disconnect the motor from the operating mechanism when
the emergency manual operating mechanism is engaged.
2.5.1 Door-Operator Types
[Provide an operator which is mounted to the right or left door head plate with the operator on top of the door-hood
assembly and connected to the door drive shaft with drive chain and sprockets. Headroom is required for this
type of mounting.]
[Provide an operator which is mounted to the right or left door head plate with the operator on coil side of the
door-hood assembly and connected to the door drive shaft with drive chain and sprockets. Front clearance is
required for this type of mounting.]
[Provide an operator which is mounted to the inside front wall on the left or right side of door and connected
to door drive shaft with drive chain and sprockets. Side room is required for this type of mounting. Wall mounted
operator can also be mounted above or below shaft; if above shaft, headroom is required.]
[Provide a bench mounted operator which is mounted to the right or left door head plate and connected to the door
drive shaft with drive chain and sprockets. Side room is required for this type of mounting.]
[Provide a through-wall operator which is mounted on other side of wall from coil side of door.]
2.5.2 Electric Motors
Provide motors which are the high-starting-torque, reversible, constant-duty electrical type with overload protection
of sufficient torque and wattage horsepower to move the door in either direction from any position and produce
a door-travel speed of not less than 0.2 nor more than 0.3 meter 8 nor more than 12 inches per second without
exceeding the wattagehorsepower rating.
Provide motors which conform to NEMA MG 1 designation, temperature rating, service factor, enclosure type, and
efficiency to the requirements specified.
[Certify and label explosion-proof motors to indicate conformance to the following:
[UL 674, Class I, Groups C and D]
[UL 674, Class II, Groups F and G]]
2.5.3 Motor Bearings
Bearings must be bronze-sleeve or heavy-duty ball or roller antifriction type with full provisions for the type
of thrust imposed by the specific duty load.
Pre-lubricate and factory seal bearings in motors less than 375 watts 1/2 horsepower.
Equip motors coupled to worm-gear reduction units with either ball or roller bearings.
Equip bearings in motors 375 watts 1/2 horsepower or larger with lubrication service fittings. Fit lubrication
fittings with color-coded plastic or metal dust caps.
In any motor, bearings that are lubricated at the factory for extended duty periods do not need to be lubricated
for a given number of operating hours. Display this information on an appropriate tag or label on the motor
with instructions for lubrication cycle maintenance.
2.5.4 Motor Starters, Controls, and Enclosures
Each door motor must have a factory-wired, unfused, disconnect switch; a reversing, across-the-line magnetic
starter with thermal overload protection; 120-volt operating coils with a control transformer limit switch; and
a safety interlock assembled in a NEMA ICS 6 type enclosure as specified herein. Control equipment must conform
to NEMA ICS 2.
Provide adjustable switches, electrically interlocked with the motor controls and set to stop the door automatically
at the fully open and fully closed position.
2.5.5 Control Enclosures
Provide control enclosures that conform to NEMA ICS 6 for [general purpose NEMA Type 1.] [oil-tight and dust-tight
NEMA Type 13.] [explosion-proof, NEMA Type 7, group as indicated.] [explosion-proof NEMA Type 9, group as indicated.]
2.5.6 Transformer
Provide starters with 230/460 to 115 volt control transformers with one secondary fuse when it is required to
reduce the voltage on control circuits to 120 volts or less. Provide transformer that conforms to NEMA ST 1.
2.5.7 Safety-Edge Device
Provide each door with a pneumatic safety device extending the full width of the door and located within a U-section
neoprene or rubber astragal mounted on the bottom rail of the bottom door section. Device must immediately stop
and reverse the door upon contact with an obstruction in the door opening during downward travel and cause the
door to return to full-open position. Safety device is not a substitute for a limit switch.
Connect safety device to the control circuit through a retracting safety cord and reel.
2.5.8 Remote-Control Stations
[Provide interior remote control stations which are full-guarded, momentary-contact three-button, heavy-duty,
surface-mounted NEMA ICS 6 type enclosures as specified. Mark buttons "OPEN," "CLOSE," and "STOP." The "CLOSE"
button must be the type requiring a constant pressure to maintain the closing motion of the door. When the door
is in motion and the "STOP" button is pressed, the door must stop instantly and remain in the stopped position;
from the stopped position, the door may then be operated in either direction.]
[Provide exterior control stations which are full-guarded, momentary-contact three-button standard-duty, surface-mounted,
weatherproof type, NEMA ICS 6, Type 4 enclosures, key-operated, with the same operating functions as specified
herein for interior remote-control stations.]
2.5.9 Speed-Reduction Units
Provide speed-reduction units consisting of hardened-steel worm and bronze worm gear assemblies running in oil
or grease and encased in a sealed casing, coupled to the motor through a flexible coupling. Drive shafts must
rotate on ball- or roller-bearing assemblies that are integral with the unit.
Provide minimum ratings of speed reduction units which are in accordance with AGMA provisions for class of service.
Ground worm gears to provide accurate thread form; machine teeth for all other types of gearing. Surface harden
all gears.
Provide bearings which are the antifriction type equipped with oil seals.
2.5.10 Chain Drives
Provide roller chains that are power-transmission series steel roller type conforming to ASME B29.400, with a
minimum safety factor of 10 times the design load.
Roller-chain side bars, rollers, pins, and bushings must be heat-treated or otherwise hardened.
Provide chain sprockets that are high-carbon steel with machine-cut hardened teeth, finished bore and keyseat,
and hollow-head setscrews.
2.5.11 Brakes
Provide brakes which are 360-degree shoe brakes or shoe and drum brakes, solenoid-operated and electrically interlocked
to the control circuit to set automatically when power is interrupted.
2.5.12 Clutches
Clutches must be the 100 millimeter 4-inch diameter, multiple face, externally adjustable friction type or adjustable
centrifugal type.
2.6 FIRE-RATED DOOR ASSEMBLY
Provide fire-rated door assemblies with the dimensions, fire rating, and operating type indicated with electric
operators and assemblies that do not interfere with manufacturer's standard interconnecting fusible links.
[Provide door manufacturer's standard interconnecting fusible links for door assemblies on both sides of the
wall opening.]
2.6.1 Fire Ratings
Provide fire-rated door assemblies complying with NFPA 80 Standard for Fire Doors and Other Opening Protectives
and UL Fire Resistance - Volume 3.
2.7 SURFACE FINISHING
Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying
and designating finishes. Noticeable variations in the same metal component are not acceptable. Variations in
appearance of adjoining components are acceptable if they are within the range of approved samples and are assembled
or installed to minimize contrast.
PART 3 EXECUTION
3.1 GENERAL
Install overhead coiling door assembly, anchors and inserts for guides, brackets, motors, switches, hardware,
and other accessories in accordance with approved detail drawings and manufacturer's written instructions. Upon
completion of installation, doors must be free from all distortion.
Install overhead coiling doors, motors, hoods, and operators at the mounting locations as indicated for each
door in the contract documents and as required by the manufacturer.
Install overhead coiling doors, switches, and controls along accessible routes in compliance with regulatory
requirements for accessibility and as required by the manufacturer.
3.2 FIELD PAINTED FINISH
Steel doors and frames which are to be field painted must accordance with Section 09 90 00 - PAINTS AND COATINGS
09 90 00.00 40 PAINTING AND COATING and manufacturer's written instructions. Protect weather stripping from
paint. Finishes must be free of scratches or other blemishes.
3.3 ACCEPTANCE PROVISIONS
After installation, adjust hardware and moving parts. Lubricate bearings and sliding parts as recommended by
manufacturer to provide smooth operating functions for ease movement, free of warping, twisting, or distortion
of the door assembly.
Adjust seals to provide weather-tight fit around entire perimeter.
Engage a factory-authorized service representative to perform startup service and checks according to manufacturer's
written instructions.
Test the door opening and closing operation when activated by controls or alarm-connected fire-release system.
Adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. Reset door-closing
mechanism after successful test.
Test and make final adjustment of new doors at no additional cost to the Government.
3.3.1 Maintenance and Adjustment
Not more than 90 calendar days after completion and acceptance of the project, the Contractor must examine, lubricate,
test, and re-adjust doors as required for proper operation.
3.3.2 CLEANING
NOTE: Delete the paragraph heading and the following paragraph if Metal Rolling
Counter Doors are not being used.
Clean [aluminum][stainless steel] doors in accordance with manufacturer's approved instructions.