a.
Each run shall consist of the required number of sections of
straight track, a section of dropout track, feed boxes, end caps,
couplings, hangers, and other accessories to make the system
complete and workable. Provide expansion tracks in each run where
the system crosses a building expansion joint in the roof
construction and in the top guides.
b.
Furnish one track-supported tandem trolley or self-supporting
collector for each [individually motor-operated door] [group of
doors], complete with spring-loaded brush contacts. Provide
trolley pulling brackets and corrosion-protected chains attached
from each side of the pulling bracket to each side of the tandem
trolley or support bracket for self-supporting collectors.
2.3.9.2
Electrical Cables
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NOTE: Draped or festooned cables and cable reels
should be specified to be furnished and installed
under Section 16402, "Interior Distribution System."
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Flexible cables or cable reels shall be provided under Section 16402
INTERIOR DISTRIBUTION SYSTEM, in accordance with the door manufacturer's
approved drawings and wiring diagrams.
PART 3
EXECUTION
3.1
PROTECTIVE COATINGS
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NOTE: Painting of hangar doors must be specifically
mentioned in Section 09900, "Paints and Coatings,"
along with instructions not to paint operating
parts, mechanisms, limit switches, or trolley ducts.
**************************************************************************
3.1.1
Cleaning
After fabrication, clean metal surfaces in accordance with SSPC SP 6
(Commercial Blast).
3.1.2
Shop Painting
After cleaning, coat steel surfaces other than machine-finished parts with
priming paint. Keep paint off of finished bearing surfaces. Before
assembly, prime surfaces that will be inaccessible after assembly. Handle
painted materials with care to avoid scraping or breaking the protective
film. Make match-marks on painted surfaces only.
3.2
ERECTION
Assemble doors and accessories in accordance with approved shop drawings.
Do not erect doors until the work of other trades in preparing the opening
has been completed, the hangar roof is under full dead load, and the top
guide and rail systems are within specified tolerances. After completing
erection and before starting field painting, clean interior and exterior
door surfaces. Clean abraded surfaces, field welds, and field bolts; and
coat with priming paint. Field painting as specified in Section 09900
SECTION 08342
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