Attachment 1 - Statement of Work.pdf

STATEMENT OF WORK

MQNA 21-6000

TWCF Replace APS Air Freight Terminal Roll-Up

Doors, T-709

21 May 2021

USAFE

Lajes Field, Azores, Portugal

765th Air Base Squadron

APO AE 09720

STATEMENT OF WORK

Project title: TWCF Replace APS Air Freight Terminal Roll-Up Doors, T-709

Location: Avenida do Imperio

Project number: MQNA 21-6000

Facility: T-709

1. General:

The contractor shall provide all plant labor, materials, tools, equipment, transportation, supervision and personnel necessary to accomplish the work described in this statement of work for building T-

709.

During the performance of this work, building T-709 will remain in service. Contractor shall provide necessary equipment to protect stored materials from any damage or dust accumulation.

Work is located at Avenida do Imperio, Facility T-709, Lajes Field, Azores – Portugal, and shall be performed in accordance with this Statement of Work (SOW), Specifications, latest version of the

Lajes Field Installation Facilities Standards (LFIFS), available at https://www.wbdg.org/ffc/af-afcec/installation-facilities-standards-ifs/lajesafb-ifs and all applicable Codes & Regulations.

2. Scope of work:

2.1. Demolition Work:

2.1.1. Demolish and properly dispose of existing rollup doors and all its components. (3 EA)

Figure 1 – Interior View

Figure 2 – Exterior View

Figure 3 - Remote Control Station (OPEN, CLOSE, STOP and KEY)

Demolition - General notes

Use appropriate equipment and techniques for demolition or removal work in order to avoid damages on surrounding area.

All elements damage by the contractor during this work shall be returned to original condition.

All materials from demolition shall be properly handled and disposed by the contractor, according with the section 6 of this document.

2.2. New Work:

2.2.1. Install new interlocking steel slats rollup doors operated by electric-power with auxiliary hand chain operation, complete with guides, hardware, fastenings, operating mechanisms, wiring and accessories necessary. Shall be surface-mounted type with guides at jambs set back a sufficient distance to provide a clear opening when door is in open position. Doors (size 5.73 by 4.5m), hardware, and anchors shall be designed to withstand a wind pressure 2.60 kilopascals (approximately 55 psf) without damage.

Rollup doors shall be mounted on interior side of walls. Curtain shall roll up on a barrel supported at head of opening on brackets and be balanced by a torsional spring system in the barrel. Slats shall be of the gage required for the width indicated and the wind pressure specified above. Rollup doors shall have windlocks or integral slat lugs of manufacturer's standard design. Windlocks or lugs shall prevent curtain from leaving guide because of deflection from wind pressure or other forces. Guides shall be of sufficient depth or shall incorporate a steel locking bar to retain the curtain in place under the wind pressure specified. Provide continuous vinyl or neoprene weather seals on guides at exterior doors. Rollup doors shall be automatic open/stop/close and key, with electric eye, fixtures and automatic reverse device (safety pillow), manual means to open doors in case of power failure. Door shall be painted Dark Bronze RAL 8028. Current characteristis are 400V, 3PH and 50HZ. Additional information can be located in LFIFS.

(3 EA)

New Construction - General notes

Contractor shall coordinate with user and relocate all equipment/material located in areas where work shall be performed.

All measurements stated in these Specifications are approximate, it’s the contractor’s responsibility to field verify all measurements.

3. Submittals:

3.1. The Contractor shall submit requested data for all items listed in the included Submittal

Register. All submittal items must be approved prior to beginning any work. Documents to be submitted may include lists of materials, operating and maintenance instructions, manufacturer’s descriptive and technical literature, brochures, catalog cuts, performance data, spare parts data, shop drawings, diagrams, color samples, and other materials as appropriate.

According to SAF/AQC Memorandum from 1 April 2016, all submittals must be provided in electronic form starting 1st October of 2016. Furthermore, all contract actions shall be signed digitally.

3.2. Materials will be approved based on the manufacturer’s published data meeting the requirements listed in the SOW.

3.3. Underwriters Laboratories Inc.: Labels or printed documentation will be accepted as evidence that the materials conform to the applicable standards of the agency. In lieu of the labels or listing, the contractor may submit a statement from a recognized, adequately equipped testing agency indicating that the materials comply with all contract requirements.

3.4. Non-Underwriter’s Laboratories Inc. Requirements: For other materials specified to conform to Non UL publications, manufacturer’s statement indicating complete compliance with the applicable specifications or standard (Fed. Spec. Military Spec., or standard of the American

Society for Testing and Materials, National Electrical Manufacturers, etc.) are acceptable.

3.5. Contractor is responsible for completing DD Form 1354 (Transfer and Acceptance of Military

Real Property) and submitting it to the 765th Contracting Flight as a submittal item prior to the final inspection.

3.6. The contractor shall comply with AFMAN 32-7002, Chapter 3 Hazardous Material

Management, dated 4 FEBRUARY 2020 or the latest version of this document if applicable.

The Contractor shall process, obtain and maintain a Chemical/Hazardous Material Request

Authorization Form (AF IMT 3952), required, prior to beginning construction, including a compilation list of all hazardous materials to be used in the project. The listing shall be submitted for approval, using the aforementioned AF Form 3952, and a current copy of the product SDS.

4. Coordination with government activities:

4.1. If it becomes necessary to interrupt work activities due to construction, permission to do so must be requested in writing to the CO twenty-one (21) days in advance.

4.2. The contractor shall request street closings, both partial and/or total, twenty-one (21) days prior to the closing.

4.3. Work in conjunction with this contract which requires utility outages which will affect (as determined by the CO) normal activities in the building, construction area, or other work areas, shall be performed by the contractor at a time other than regular work periods of the organization occupying the facility or area.

4.4. Temporary construction for facilities used by the contractor for preventing interruption of normal work activity or loss of utilities shall be subject to approval of 765 ABS/CEN through the CO.

4.5. Prior to conducting hot work, a welding permit shall be requested, if applicable.

4.6. Utility Outages:

4.6.1. The contractor shall coordinate all utility outages with the using agency through the CO or his representative prior to the outage. Services shall not be interrupted until receipt of approval of proposed hours and dates from the 765 ABS/CEN through the CO. All work shall be arranged to ensure that the outage will be of minimum duration. The contractor will provide notice to the CO, in writing, not less than twenty-one (21) working days prior to the required outage or as determined by the CO. No response to the outage/interruption request shall be considered as disapproval for the outage/interruption.

In the event of scheduled utility outage being canceled by the Government, notification shall be given to the contractor at least 24 hours in advance of the time for the outage to start and the contractor waives his right to any claim for equitable adjustment or increased cost of performance under this contract as a result of this cancellation. Once an utility outage is arranged and work as begun, it must go on continuously until the affected utilities are restored to the affected facility.

4.6.2. The contractor’s Interruption and Outage Requests shall include specific location of interruption/outage, hours and dates of interruption/outage, services affected by the interruption/outage.

4.6.3. Water Mains. Operation of valves on water mains will be by government personnel only. Where shut-off of water lines interrupts service to fire hydrants or fire sprinkler systems, the contractor shall contact the CO and arrange his operations to have sufficient personnel available to restore service without delay in the event of an emergency as determined by the 765 ABS/CEF Fire Prevention Office.

4.6.4. Fire Protection System. Where interruption of electrical power affects a fire protection system service, the contractor shall notify the CO twenty-one (21) working days before making such interruptions and shall restore service prior to leaving the job site each day.

5. Government furnished materials:

Not Applicable.

6. General Information:

6.1. Hauling. All demolition debris becomes the property of the contractor, unless otherwise stated in the scope of work, and must be disposed of by the contractor in accordance with local and

US regulations. All material hauled by the contractor shall be contained, tied, or enclosed to prevent leaking, spilling, or blowing.

6.2. Transportation routes. The contractor shall ensure all debris or dirt is promptly removed from any transportation route if such debris is spilled, blown, or leaked from hauling equipment and vehicles. All dirt and mud caused by tracks of hauling equipment will be removed by the contractor within one hour of notification by the government.

6.3. Disposal. All demolition collected by the contractor shall be disposed of in an authorized landfill or transfer station. No disposal is allowed on the sites. Materials to be turned over to

Defense Logistics Agency – Disposition (DLA-DS) will be transported and dropped by contractor upon coordination with Construction Management and Contracting Office. The contractor shall provide the government a copy of the waste disposal manifests for all demolition materials disposed.

6.4. Workmanship. Materials shall be installed in accordance with recommendations of the manufacturer to conform to the contract document. The installation shall be done in accordance with manufacturer’s recommendations by personnel qualified to perform the work.

6.5. Warranty. The contractor shall provide a written warranty agreeing to repair or replace materials and services when damages resulted from poor workmanship within one (1) calendar year to begin at Government acceptance of work.

6.6. Safety. The contractor shall be responsible for all means and methods as they relate to safety and shall comply with all saftey requirements as outlined in the EM-385-1-1 Safety and Health

Requirements manual. The contractor shall also abide by any local Portuguese safety requirements if more stringent than the EM-385-1-1.

7. Suspected Contaminated Soil

The project is being developed at an area where there is no historical data that may suggest that there is any type of soil contamination at the mentioned facilities or surrounding areas. Either way during the project performance if the Contractor encounters any situation that may be considered suspected of any type of contamination, contractor shall stop all work immediately apply proper protection and isolation measures to avoid dispersion of any contaminants and cross contamination, inform the Contracting Officer and wait for further instructions.

8. Miscellaneous:

8.1. Distances, dimensions, exact location and other details must be field verified in order to assure proper installation and conformity with applicable standards, prior to the order of materials and/or execute the project;

8.2. Work shall be conducted with minimum disruption to operations and occupants of existing facility and/or property;

8.3. Remove or alter existing work in such a manner as to prevent injury or damage to any portions of the existing work which remain;

8.4. Site restoration. Repair or replace portions of existing work which have been altered during construction operations to match existing or adjoining work, as approved by the Contracting

Officer. At the completion of operations, existing work shall be in a condition equal to or better than that which existed before new work started.

8.5. Requests for power or water outages must be made to the government at least twenty one calendar days in advance.

9. Period of Performance:

9.1. Contractor is required to complete project within 180 calendar days including material acquisition from date of award.

10. Working Hours:

10.1. Regular working hours must consist of an 8 hour period, between 08:00 a.m. and 05:00 p.m., Monday through Friday. Work outside regular working hours requires Contracting Officer approval.

11. Construction Permit:

11.1. The contractor shall submit an adequate construction permit in accordance with applicable

Protuguese Law (Alvará) considering the scope and magnitude of the project.

12. Specifications:

Rollup door T709

Section 08 33 23 Page 1

SECTION 08 33 23

OVERHEAD COILING DOORS

08/20

PART 1 GENERAL

1.1 REFERENCES

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 7-16 (2017; Errata 2018; Supp 1 2018) Minimum

Design Loads and Associated Criteria for

Buildings and Other Structures

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B29.400 (2001; (R 2008) (R 2013) (R 2018))

Combination, "H" Type Mill Chains, and

Sprockets

ASTM INTERNATIONAL (ASTM)

ASTM A36/A36M (2019) Standard Specification for Carbon

Structural Steel

ASTM A47/A47M (1999; R 2018; E 2018) Standard Specification for Ferritic Malleable Iron Castings

ASTM A53/A53M (2020) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A123/A123M (2017) Standard Specification for Zinc (Hot-

Dip Galvanized) Coatings on Iron and Steel

Products

ASTM A153/A153M (2016a) Standard Specification for Zinc

Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A307 (2014; E 2017) Standard Specification for

Carbon Steel Bolts, Studs, and Threaded Rod

60 000 PSI Tensile Strength

ASTM A653/A653M (2020) Standard Specification for Steel

Sheet, Zinc-Coated (Galvanized) or Zinc-Iron

Alloy-Coated (Galvannealed) by the Hot-Dip

Process

ASTM A666 (2015) Standard Specification for Annealed or

Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar

Section 08 33 23 Page 2

ASTM A780/A780M (2020) Standard Practice for Repair of

Damaged and Uncoated Areas of Hot-Dip

Galvanized Coatings

ASTM A924/A924M (2020) Standard Specification for General

Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process

ASTM B221 (2014) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

ASTM E330/E330M (2014) Structural Performance of Exterior

Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference

ASTM F568M (2007) Standard Specification for Carbon and

Alloy Steel Externally Threaded Metric

Fasteners

DOOR AND ACCESS SYSTEM MANUFACTURERS ASSOCIATION (DASMA)

ANSI/DASMA 108 (2017) Standard Method for Testing Sectional

Garage Doors, Rolling Doors and Flexible

Doors: Determination of Structural

Performance Under Uniform Static Air Pressure

Difference

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA ICS 1 (2000; R 2015) Standard for Industrial

Control and Systems: General Requirements

NEMA ICS 2 (2000; R 2005; Errata 2008) Industrial

Control and Systems Controllers, Contactors, and Overload Relays Rated 600 V

NEMA ICS 6 (1993; R 2016) Industrial Control and

Systems: Enclosures

NEMA MG 1 (2018) Motors and Generators

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2020; ERTA 20-1 2020; ERTA 20-2 2020; TIA

20-1; TIA 20-2; TIA 20-3; TIA 20-4) National

Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 325 (2017; Reprint Feb 2020) UL Standard for

Safety Door, Drapery, Gate, Louver, and

Window Operators and Systems

1.2 SUBMITTALS

Section 08 33 23 Page 3

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for information only. When used, a code following the "G" classification 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

Overhead Coiling Doors; G

Counterbalancing Mechanism; G

Electric Door Operators; G

Bottom Bars; G

Guides; G

Mounting Brackets; G

Hood; G

Installation Drawings; G

SD-03 Product Data

Hardware; G

Recycled content for steel curtain slats; S

SD-05 Design Data

Hardware; G

SD-10 Operation and Maintenance Data

Operation and Maintenance Manuals, Data Package 2; G

SD-11 Closeout Submittals

Warranty; G

1.3 QUALITY CONTROL

Section 08 33 23 Page 4

1.3.1 Warranty

Furnish a written guarantee that the helical spring and counterbalance mechanism are free from defects in material and workmanship for not less than 2 years after completion and acceptance of the project.

Warrant that upon notification by the Government, any defects in material, workmanship, and door operation are immediately correct within the same time period covered by the guarantee, at no cost to the Government.

1.3.2 Operation And Maintenance Submittals

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.

Submit Operation and Maintenance Manuals for Overhead Coiling Door

Assemblies, including the following items:

Electric Door Operators

Hood

Counterbalancing Mechanism

Painting

Provide operation and maintenance manuals which are consistent with manufacturer's standard brochures, schematics, printed instructions, operating procedures, and safety precautions.

1.4 DELIVERY, STORAGE, AND HANDLING

Deliver doors to the jobsite wrapped in a protective covering with the brands and names clearly marked thereon. Store doors in an adequately ventilated dry location that is free from dirt and dust, water, or other contaminants. Store in a manner that permits easy access for inspection and handling. Handle doors carefully to prevent damage. Remove damaged items that cannot be restored to like-new condition and provide new items.

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

Provide overhead coiling doors with interlocking slats, complete with anchoring and door hardware, guides, hood, and operating mechanisms, and designed for use on openings as indicated. Doors must be spring counterbalanced, rolling type, and designed for use on exterior openings, as indicated. Doors must be operated by electric-power with auxiliary hand chain operation. Doors to be surface-mounted type with guides at jambs set back a sufficient distance to provide a clear opening when door is in open position. Mount exterior doors on interior face of walls.

2.1.1 Design Requirements

Section 08 33 23 Page 5

2.1.1.1 Door Detail Shop Drawings

Provide installation drawings for door assemblies which show: elevations of each door type, shape and thickness of materials, finishes, details of joints and connections, 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 on wiring diagrams for power, signal and controls.

For motor-operated doors include supporting brackets for motors, location, type, and ratings of motors, and safety devices. Include a schedule showing the location of each door with the drawings.

2.1.2 Performance Requirements

2.1.2.1 Wind Loading

Design and fabricate door assembly to withstand the wind loading pressure of at least 55 pounds per square foot in accordance with ANSI/DASMA 108.

Provide test data showing compliance with ASTM E330/E330M. Sound engineering principles may be used to interpolate or extrapolate test results to door sizes not specifically tested. Ensure that the complete assembly meets or exceeds the requirements of ASCE 7-16.

2.1.2.2 Operational Cycle Life

Design all portions of the door, hardware and operating mechanism that are subject to movement, wear, or stress fatigue to operate through a minimum number of 20 cycles per day. 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.

2.2 COMPONENTS

2.2.1 Overhead Coiling Doors

2.2.1.1 Curtain Materials and Construction

Provide curtain slats fabricated from Grade A steel sheets conforming to

ASTM A653/A653M, with the additional requirement of a minimum yield point of

33,000 psi. Provide 18 gauge sheets, Grade 40 steel with galvanized steel zinc coating in conformance with ASTM A653/A653M and ASTM A924/A924M.

Provide steel curtain slats containing a minimum of 20 percent recycled content. Submit data identifying percentage of recycled content for steel curtain slats.

2.2.1.2 Curtain Bottom Bar

Install curtain bottom bars as pairs of angles or using extrusions from the manufacturer's standard steel, stainless and aluminum extrusions not less than 2.0 by 2.0 inches by 0.188 inch. Do not use aluminum on doors more than 16 feet wide. Ensure steel extrusions conform to ASTM A36/A36M.

Stainless steel extrusions conforming to ASTM A666, Type 304. Aluminum extrusions conforming to ASTM B221. Galvanize angles and fasteners in accordance with ASTM A653/A653M and ASTM A924/A924M. Coat welds and abrasions with paint conforming to ASTM A780/A780M.

Section 08 33 23 Page 6

Provide two minimum 2 inch by 2 inch by 1/8 inch structural steel angles.

2.2.1.3 Endlocks (and Windlocks)

Provide endlocks of Grade B cast steel conforming to ASTM A47/A47M, galvanized in accordance with ASTM A153/A153M. Secure locks at every other curtain slat. In addition to endlocks, exterior doors which are more than

16 feet wide or which have a design wind load of more than 20 pounds per square foot, must have windlocks of manufacturer's standard design.

Windlocks must prevent curtain from leaving guide because of deflection from wind pressure or other forces.

2.2.1.4 Weather Stripping

Provide a hood baffle inside the hood that is a minimum 1/16 inch thick sheet of vinyl, neoprene rubber or equivalent. Provide guide weather stripping that is a minimum 1/16 inch thick sheet of vinyl, neoprene rubber, or equivalent.

Provide bottom bar weather-stripping that is a minimum 1/16 inch thick sheet of vinyl, neoprene rubber, or equivalent.

2.2.1.5 Locking Devices

Ensure that the slide bolt engages through slots in tracks for locking by padlock, located on both left and right jamb sides, operable from coil side.

Provide a locking device assembly which includes cylinder lock, operating handle, cam plate, and adjustable locking bars to engage through slots in tracks.

2.2.1.6 Safety Interlock

Equip power-operated doors with a safety interlock switch to disengage power supply when the door is locked, or provide an operator with an internal lock sensing device to prevent the door opening when the door is locked.

2.2.2 Hardware

Ensure that all hardware conforms to ASTM A153/A153M, ASTM A307, and ASTM

F568M.

2.2.2.1 Guides

Fabricate curtain jamb guides from the manufacturer's standard angles or channels of same material and finish as curtain slats unless otherwise indicated. Provide guides with sufficient depth or incorporate a steel locking bar to retain the curtain in place under the wind pressure specified. Ensure curtain operates smoothly. Slot bolt holes for track adjustment. Securely attach guides to adjoining construction with not less than 3/8 inch diameter bolts, spaced near each end and not over 30 inches apart.

Fabricate with structural steel angles. Provide windlock bars of same material when windlocks are required to meet specified wind load. Flare the top of inner and outer guide angles outwards to form bellmouth for smooth

Section 08 33 23 Page 7 entry of curtain into guides. Provide removable guide stoppers to prevent over travel of curtain and bottom bar.

2.2.2.2 Hood

Provide a hood with a minimum galvanized sheet metal, flanged at top for attachment to header and flanged at bottom to provide longitudinal stiffness. The hood encloses the curtain coil and counterbalance mechanism.

Hoods for openings more than 12 feet in width must have intermediate support brackets to prevent excessive sag. Provide a weather baffle at the lintel or inside the hood of each exterior door.

2.2.3 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.

2.2.3.1 Brackets

Provide the manufacturer's standard mounting brackets with one located at each end of the counterbalance barrel conforming to ASTM A36/A36M. Provide brackets of hot-rolled steel.

Brackets will be of 1/4 inch minimum thick steel plates, with permanently sealed ball bearings. Designed to enclose ends of coil and provide support of counterbalance pipe at each end.

2.2.3.2 Counterbalance Barrels

Curtain must roll up on a barrel supported at head of opening on brackets and be balanced by a torsion spring system in the barrel. Fabricate spring barrel of manufacturer's standard hot-formed, structural-quality, welded or seamless carbon-steel pipe, conforming to ASTM A53/A53M or equivalent.

Ensure the barrel is of sufficient diameter and wall thickness to support rolled-up curtain without distortion of slats. Limit barrel deflection to not more than 0.03 inch per foot of span under full load.

a. Barrel

Provide steel pipe capable of supporting curtain load with maximum deflection of 0.03 inches per foot of width.

b. Spring Balance

Provide an oil-tempered, heat-treated steel helical torsion spring assembly designed for proper balance of door. Ensure that effort to operate manually operated units does not exceed 25 lbs. At least 80 percent of the door weight must be counterbalanced at any position. Provide wheel for applying and adjusting spring torque.

2.2.3.3 Spring Balance

Section 08 33 23 Page 8

Install one or more oil-tempered, heat-treated steel helical torsion springs 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.

2.2.3.4 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.

2.2.3.5 Counterbalance Shaft Assembly

a. Barrel

Provide steel pipe capable of supporting the curtain load with maximum deflection of 0.03 inches per foot of width.

b. Spring Balance

Provide an oil-tempered, heat-treated steel helical torsion spring assembly designed for proper balance of door. Ensure that maximum effort to operate does not exceed 25 pounds. Provide wheel for applying and adjusting spring torque.

2.2.4 Electric Door Operators

Provide electrical wiring and door operating controls conforming to the applicable requirements of NFPA 70 and UL 325. The door manufacturer must furnish automatic control and safety devices, including extra flexible type

SO cable and spring-loaded automatic takeup reel or equivalent device, as required for proper operation of the doors. Conduit, wiring, and mounting of controls are specified in Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM.

Electric door-operator assemblies need to be the sizes and capacities recommended and provided by the door manufacturer for specified doors.

Furnish complete assemblies 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 does not affect the adjustment of the limit switches. Provide an electrical or mechanical device that automatically disconnects the motor from the operating mechanism when the emergency manual operating mechanism is engaged.

2.2.4.1 Door-Operator Types

Provide an operator 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

Section 08 33 23 Page 9 drive shaft with drive chain and sprockets. Front clearance is required for this type of mounting.

2.2.4.2 Electric Motors

Provide motors which are the high-starting-torque, reversible, constant-duty electrical type with overload protection of sufficient torque and horsepower to move the door in either direction from any position. Ensure they produce a door-travel speed of not less than 8 nor more than 12 inches per second without exceeding the horsepower rating.

Provide motors which conform to NEMA MG 1 designation, temperature rating, service factor, enclosure type, and efficiency to the requirements specified. Motors must be suitable for operation on current of the characteristics indicated. Motor enclosures must be the drip-proof type or

NEMA TEFC and TENV type. Install motors in approved locations.

2.2.4.3 Motor Bearings

Select bearings with 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 1/2 horsepower.

Equip motors coupled to worm-gear reduction units with either ball or roller bearings.

Equip bearings in motors 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.

2.2.4.4 Motor Starters, Controls, and Enclosures

Provide each door motor with: a factory-wired, unfused, disconnect switch; a reversing, across-the-line magnetic starter with thermal overload protection; 24-volt operating coils with a control transformer limit switch;

and a safety interlock assembled in a NEMA ICS 6 type enclosure as specified herein. Ensure control equipment conforms to NEMA ICS 1 and 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.

2.2.4.5 Control Enclosures

Provide control enclosures that conform to NEMA ICS 6 for NEMA Type 4X.

2.2.4.6 Sensing-Edge Device

Provide each door with a pneumatic or electric sensing device that meets UL

325, extends the full width of the door, and is located within a U-section

Section 08 33 23 Page 10 neoprene or rubber astragal, mounted on the bottom rail of the bottom door section. Device needs to immediately stop and reverse the door upon contact with an obstruction in the door opening or upon failure of the device or any component of the control system and cause the door to return to its user-defined open position. Any momentary door-closing circuit must be automatically locked out and the door must be operable manually or with constant pressure controls until the failure or damage has been corrected.

A sensing device is not a substitute for a limit switch.

Connect sensing device to the control circuit through a retracting cord and reel.

2.2.4.7 Remote-Control Stations

Remote control stations must be at least 5 feet above the floor line, and all switches must be located so that the operator will have complete visibility of the door at all times. Provide interior remote control stations that 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 "OPEN" and "STOP" buttons must be of the type requiring only momentary pressure to operate. The "CLOSE" button must be of the type either requiring constant pressure to maintain the closing motion of the door or momentary pressure when installed with a monitored entrapment detection device which, upon failure of the device or any component of the control system, cause the door to return to its full open position. When the door is in motion and the "STOP" button is pressed, ensure the door stops instantly and remains in the stopped position. From the stopped position, the door may then be operated in either direction by the "OPEN" or "CLOSE" buttons. When the door is in motion, and the "CLOSE" button of the constant pressure type is released, the door must stop and remain in the stop position or reverse to the user set up position; from the stop position, the door may then be operated in either direction by the

"OPEN" or "CLOSE" buttons. Controls must be adjustable to automatically stop the doors at their fully open and closed positions. Open and closed positions must be readily adjustable.

Provide exterior control stations that 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.

2.2.4.8 Speed-Reduction Units

Provide speed-reduction units consisting of hardened-steel worm and bronze worm gear assemblies or planetary gear reducers running in oil or grease and inside a sealed casing, coupled to the motor through a flexible coupling.

Drive shafts need to rotate on ball- or roller-bearing assemblies that are integral with the unit.

Provide minimum ratings of speed reduction units 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 antifriction type bearings equipped with oil seals.

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2.2.4.9 Chain Drives

Provide roller chains that are a power-transmission series steel roller type conforming to ASME B29.400, with a minimum safety factor of 10 times the design load.

Heat-treat or otherwise harden roller-chain side bars, rollers, pins, and bushings.

Provide high-carbon steel chain sprockets with machine-cut hardened teeth, finished bore and keyseat, and hollow-head setscrews.

2.2.4.10 Brakes

Provide 360-degree shoe brakes or shoe and drum brakes. Ensure the brakes are solenoid-operated and electrically interlocked to the control circuit to set automatically when power is interrupted.

2.2.4.11 Clutches

Ensure clutches are friction type or adjustable centrifugal type.

2.2.4.12 Weather/Smoke Seal Sensing Edge

Provide automatic stop control by an automatic sensing switch within neoprene astragal extending the full width of door bottom bar.

Provide an electric sensing edge device. Ensure the door immediately stops downward travel when contact occurs before door fully closes. Provide a self-monitoring sensing edge connection to the motor operator.

2.2.5 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.

2.2.5.1 Galvanized and Shop-Primed Finish

Surfaces specified must have a zinc coating, a phosphate treatment, and a shop prime coat of rust-inhibitive paint. The galvanized coating must conform to ASTM A653/A653M, coating designation Z275 (G90), for steel sheets, and ASTM A123/A123M for iron and steel products. The weight of coatings for products must be as designated in Table I of ASTM A123/A123M for the thickness of base metal to be coated. The prime coat must be a type especially developed for materials treated by phosphates and adapted to application by dipping or spraying. Repair damaged zinc-coated surfaces by the materials and methods conforming to ASTM A780/A780M and spot prime. At the option of the Contractor, a two-part system including bonderizing, baked-on epoxy primer, and baked-on enamel top coat may be applied to slats and hoods before forming, in lieu of prime coat specified.

2.2.5.2 Baked-Enamel or Powder-Coat Finish

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Manufacturer's standard baked-on finish consisting of prime coat and thermosetting topcoat. Comply with the coating manufacturer's written instructions for cleaning, pretreatment, application, and minimum dry film thickness.

PART 3 EXECUTION

3.1 INSTALLATION

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, ensure doors are 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.

3.1.1 Field Painted Finish

Ensure field painted steel doors and frames are in accordance with Section

09 90 00 PAINTS AND COATINGS and the manufacturer's written instructions.

Protect the weather stripping from paint. Ensure that the finishes are free of scratches or other blemishes.

3.2 ADJUSTING AND CLEANING

3.2.1 Acceptance Provisions

After installation, adjust the 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 a weather-tight fit around entire perimeter.

Engage a factory-authorized service representative to perform startup service and checks according to the manufacturer's written instructions.

Test the door opening and closing operation when activated by controls system. Adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. Reset the door-closing mechanism after a successful test.

Test and make final adjustment of new doors at no additional cost to the

Government.

3.2.1.1 Maintenance and Adjustment

Not more than 90 calendar days after completion and acceptance of the project, examine, lubricate, test, and re-adjust doors as required for proper operation.

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3.2.1.2 Cleaning

Clean doors in accordance with manufacturer's approved instructions.

-- End of Section --

END OF STATEMENT OF WORK