2.33.3
Floodlights
Provide outdoor heavy-duty type with baffles or hoods as applicable for
uniform illumination and to reduce shadows.
2.34
PRECISION APPROACH PATH INDICATOR (PAPI)
[Consists of four light units mounted in the area of the ground point of
intercept of the glide slope and aimed in the direction of the approach.]
2.34.1
Light Units
FAA AC 150/5345-28, Type L-880 or FAA E-2756. Connect light units to
series current circuits via appropriate isolation transformers as
recommended by the system manufacturer. Provide tilt switches and relays
to de-energize all light units when one unit exceeds tilt requirements.
[2.35
PAINTING
As specified in Section 09900 PAINTS AND COATINGS.
]PART 3
EXECUTION
3.1
ELECTRICAL REQUIREMENTS
Electrical installation shall conform to IEEE C2, NFPA 70, NFPA 70B and
requirements specified herein. Underground electrical work shall be as
specified in Section 16302N UNDERGROUND TRANSMISSION AND DISTRIBUTION.
3.1.1
Electrical Metallic Tubing
Do not install underground or encase in concrete.
3.2
CONCRETE
Unless otherwise specified, provide 20.67 MPa 3000 psi concrete for below
grade and 27.56 MPa 4000 psi concrete for above grade use with 25 mm one
inch maximum aggregate[ conforming to the requirements of Section 03300N
CAST-IN-PLACE CONCRETE].
3.3
AIRFIELD [MANHOLES][ AND
][HANDHOLES]
**************************************************************************
NOTE: Change Section 02582, "Electrical Manhole and
Handhole," to Section 16303N, "Underground
Electrical Work" for LANTDIV projects. For a
project specification, the designer must edit the
guide specification as necessary to suit the
specific airfield installation. Note that airfield
type manholes, vaults, handholes, and their
associated frames and covers require a design for a
maximum single wheel load of 22 675 kg 50,000 pounds
</ENG 40 815 kg 90,000 pounds. Use steel conforming
to ASTM A 36/A 36M, "Structural Steel," for covers
to airfield manholes, vaults, and handholes. Use
ductile iron for frames. Specify FS RR-F-621,
"Frames, Covers, Gratings, Steps, Sump and Catch
Basin, Manhole," and ductile iron for frames, but
not for covers.
SECTION 16522N
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