08_33_23.00_40_-_Overhead_Coiling_Doors_(2PW221).doc

Watervliet Arsenal

REPLACE OVERHEAD DOORS

Facilities Engineering Building 115

TAWV-IMP-F

8PW224

SECTION 08 33 23.00 40

OVERHEAD COILING DOORS

PART 1 GENERAL

1.01 REFERENCES

The publications referenced within this specification are referred to by the basic designation only.

A. ASTM International (ASTM)

a. A153/153M

b. A27/A27M

c. A307

d. E330 B. National Electrical Manufactures Association (NEMA)

a. NEMA ICS 2

b. NEMA ICS 6

c. NEMA MG 1

1.02 SUBMITTALS

A. Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are for information only. Submit the following in accordance with the “Statement of Work - SUBMITTAL REQUIREMENTS”:

a. SD-01 Preconstruction Submittals

1. Material Safety Data Sheets

b. SD-03 Product Data

1. Overhead Door

2. Accessories

3. Motor and Controls

1.03 CONTRACTOR

A. Work shall be performed by a certified overhead door contractor, or a Contractor whose primary business is in the realm of overhead and or commercial door repair and replacement. Contractor shall be required to show proof of this claim before notice to proceed is authorized.

PART 2 PRODUCTS

2.01 MATERIALS

A. Curtain Materials and Construction

a. Provide curtain slats which are fabricated from steel sheets conforming to ASTM A653/A653M, Grade A, with the additional requirement of a minimum yield point of 33,000 psi. Provide sheets which are galvanized in accordance with ASTM A653/A653M and ASTM A924/A924M.

B. Curtain Bottom Bar

a. Curtain bottom bars must be pairs of angles from the manufacturer's standard steel, not less than 2.0 by 2.0 inches by 0.188 inch. Steel extrusions must conform to ASTM A36/A36M. 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.

C. Vision Panels

a. 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 0.0359-inch uncoated thickness.

D. Weather Stripping

a. Weather-stripping at the door-head and jamb must be 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 5/8-inch wide and 1/8-inch thick. Threshold weather-stripping must be 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 D2000.

E. Safety Interlock

a. Equip power-operated doors with safety interlock switch to disengage power supply when door is locked.

F. Overhead Drum

a. Fabricate drums from nominal 0.028-inch thick, hot-dip galvanized steel sheet with G90 (Z275) zinc coating, complying with ASTM A653/A653M.

2.02 HARDWARE

All hardware must conform to ASTM A153/A153M, ASTM A307, ASTM F 568M, and ASTM A27/A27M.

A. Guides

a. 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.

B. Equipment Supports

a. Fabricate door-operating equipment supports from the manufacturer's standard steel shapes and plates conforming to ASTM A36/A36M, galvanized in accordance with ASTM A653/A653M and ASTM A924/A924M. Size the shapes and plates in accordance with the industry standards for the size, weight, and type of door installation.

2.03 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.

A. Brackets

a. 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 A48/A48M.

B. Counterbalance Barrels

a. Fabricate spring barrel of manufacturer's standard hot-formed, structural-quality, welded or seamless carbon-steel pipe, conforming to ASTM A53/A53M, of sufficient diameter and wall thickness to support rolled-up curtain without distortion of slats and to limit barrel deflection to not more than 0.03 inch per foot of span under full load.

C. Spring Balance

a. 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.

D. Torsion Rod for Counter Balance

a. Fabricate rod from the manufacturer's standard cold-rolled steel, sized to hold fixed spring ends and carry torsional load.

E. Manual Chain-Hoist Door Operators

a. Provide door operators which consist of an endless steel hand chain, chain-pocket wheel, guard, and a geared reduction unit with a maximum 30 lbf required pull for operation must not exceed 35 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 A48/A48M.

F. Manual Crank-Hoist Door Operators

a. Provide door operators which consist of crank and crank gearbox, steel crank drive shaft, and gear reduction unit 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.

2.04 ELECTRIC DOOR OPERATORS

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.

A. Door-Operator Types

a. 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.

B. Electric Motors

a. 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 and 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.

C. Motor Bearings

a. 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 ½ 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.

D. Motor Starters, Controls, and Enclosures

a. 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.

E. Control Enclosures

a. Provide control enclosures that conform to NEMA ICS 6 for oil-tight and dust-tight NEMA Type 13.

F. Transformer

a. 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.

G. Safety-Edge Device

a. 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.

H. Remote-Control Stations

a. 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.

I. Speed-Reduction Units

a. 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.

J. Chain Drives

a. 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.

K. Brakes

a. 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.

L. Clutches

a. Clutches must be the 4-inch diameter, multiple face, externally adjustable friction type or adjustable centrifugal type.

M. Fire Ratings

a. Provide fire-rated door assemblies complying with NFPA 80 Standard for Fire Doors and Other Opening Protectives and UL Fire Resistance - Volume 3.

2.05 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

3.01 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.

All overhead coiling doors may contain Asbestos breaking mechanisms, contractor shall remove complete unit without disturbing possible Asbestos containing brake pads. Removal of units and all associated material shall be removed off site by the contractor and properly disposed of.

3.02 Start-Up Services

A. The Contractor shall furnish the services of a compressor manufacturer's authorized representative to supervise prestart checkout, initial start-up, performance testing, and operator instruction. Time available shall be as required to properly start up but not less than 3 consecutive days for the compressor.

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GYPSUM BOARD

09 28 00 OVERHEAD COILING DOORS - 08 33 23.00 40 - Page 6