### **ITEM L-107 AIRPORT 8-FOOT AND 12-FOOT WIND CONES**

DESCRIPTION

**107-1.1** This item shall consist of furnishing and installing an
airport wind cone in accordance with these specifications and in
accordance with the dimensions, design, and details shown in the plans.

The work shall include the furnishing and installation of a support for
mounting the wind cone, the specified wire, and a concrete foundation.
The item shall also include all cable connections, conduit and conduit
fittings, the furnishing and installation of all lamps, ground rod and
ground connection, the testing of the installation, and all incidentals
necessary to place the wind cone in operation as a completed unit to the
satisfaction of the Engineer.

EQUIPMENT AND MATERIALS

**107-2.1 GENERAL.**

**a.** Airport lighting equipment and materials covered by Federal
Aviation Administration (FAA) specifications shall be certified and
listed under Advisory Circular (AC***)*** 150/5345-53, Airport Lighting
Equipment Certification Program.

**b.** All other equipment and materials covered by other referenced
specifications shall be subject to acceptance through manufacturer's
certification of compliance with the applicable specification when
requested by the Engineer.

**c.** Manufacturer\'s certifications shall not relieve the Contractor
of the Contractor's responsibility to provide materials in accordance
with these specifications and acceptable to the Engineer. Materials
supplied and/or installed that do not materially comply with these
specifications shall be removed, when directed by the Engineer and
replaced with materials, which do comply with these specifications, at
the sole cost of the Contractor.

**d.** All materials and equipment used to construct this item shall be
submitted to the Engineer for approval prior to ordering the equipment.
Submittals consisting of marked catalog sheets or shop drawings shall be
provided. Submittal data shall be presented in a clear, precise and
thorough manner. Original catalog sheets are preferred. Photocopies are
acceptable provided they are as good a quality as the original. Clearly
and boldly mark each copy to identify pertinent products or models
applicable to this project. Indicate all optional equipment and delete
non-pertinent data. Submittals for components of electrical equipment
and systems shall identify the equipment for which they apply on each
submittal sheet. Markings shall be boldly and clearly made with arrows
or circles (highlighting is not acceptable). Contractor is solely
responsible for delays in project accruing directly or indirectly from
late submissions or resubmissions of submittals.

**e.** The data submitted shall be sufficient, in the opinion of the
Engineer, to determine compliance with the plans and specifications.
\[The Contractor\'s submittals shall be neatly bound in a properly sized
3-ring binder, tabbed by specification section.\] The Engineer reserves
the right to reject any and all equipment, materials or procedures,
which, in the Engineer's opinion, does not meet the system design and
the standards and codes, specified herein.

**f.** All equipment and materials furnished and installed under this
section shall be guaranteed against defects in materials and workmanship
for a period of at least \[twelve (12) months\] from final acceptance by
the Owner. The defective materials and/or equipment shall be repaired or
replaced, at the Owner\'s discretion, with no additional cost to the
Owner.

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> **The engineer should specify the form in which submittals are to be
> received and number of copies.**
>
> **The length of time for guarantee of materials and workmanship should
> be as stated in the contract between the owner and contractor and the
> contract special provisions.**

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**107-2.2 WIND CONES.** The 8-foot (240 cm) and 12-foot (3.5 m) wind
cones and assemblies shall conform to the requirements of AC
150/5345-27, Specification for Wind Cone Assemblies.

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> **The illuminated windcone must present a constant brightness to the
> pilot. As a result, the source of power for the windcone circuit must
> be identified. Where a constant voltage is available, the windcone may
> be connected directly to the constant voltage circuit. Where the
> series lighting circuit is used as a power source to the windcone, a
> power adapter that converts constant current to constant voltage must
> be specified. An additional requirement for the power adapter is the
> output voltage must remain constant regardless of the input current.
> The manufacturer of the power adapter must be consulted to verify the
> additional load imposed on the series circuit by the power adapter.**
>
> **The engineer should specify the windcone and power adapter
> combination recommended by the manufacturer when the power source for
> the windcone circuit will be the constant current series lighting
> circuit.**

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**107-2.3 WIRE.** Wire in conduit rated up to 5,000 volts shall conform
to AC 150/5345-7, Specification for L-824 Underground Cable for Airport
Lighting Circuits for Rubber Insulated Neoprene Covered Wire, or Fed.
Spec. J-C-30, Type RHW, for rubber insulated fibrous covered wire. For
ratings up to 600 volts, thermoplastic wire conforming to Fed. Spec.
J-C-30, Types TW, THW, and THWN, shall be used. The wires shall be of
the type, size, number of conductors, and voltage shown in the plans or
in the proposal.

**107-2.4 CONDUIT.** Rigid steel conduit and fittings shall conform to
the requirements of Underwriters Laboratories Standard 6, 514, and 1242.

**107-2.5 PLASTIC CONDUIT (for use below grade only).** Plastic conduit
and fittings-shall conform to the requirements of Fed. Spec. W\--C-1094
and Underwriters Laboratories Standards UL-651 and shall be one of the
following, as shown in the plans:

**a.** Type I--Schedule 40 PVC suitable for underground use either
direct-buried or encased in concrete.

**b.** Type II--Schedule 40 PVC suitable for either above ground or
underground use.

Plastic conduit adhesive shall be a solvent cement manufactured
specifically for the purpose of gluing the specific type of plastic
conduit and fitting.

**107-2.6 CONCRETE.** The concrete for foundations shall be
proportioned, placed, and cured in accordance with Item P-610,
Structural Portland Cement Concrete.

**107-2.7 PAINT.**

**a.** Priming paint for ungalvanized metal surfaces shall be a high
solids alkyd primer conforming to TT‑P‑664D.

**b.** Priming paint for galvanized metal surfaces shall be zinc
dust‑zinc oxide primer paint conforming to MIL-DTL-24441/19B. If
necessary, add not more than ½ pint (0.06 liter) of turpentine to each
gallon (liter).

**c.** Orange paint for the body and the finish coats on metal and wood
surfaces shall consist of a ready-mixed non-fading paint meeting the
requirements of Fed. Spec. TT-E-489. The color shall be in accordance
with Federal Standards 595, Aviation Gloss Orange Number 12197.

**d.** White paint for body and finish coats on metal and wood surfaces
shall be ready-mixed paint conforming to the Master Painter's Institute,
Reference #9, Exterior Alkyd, Gloss, VOC Range E2.

**e.** Priming paint for wood surfaces shall be mixed on the job by
thinning the above specified aviation-orange or white paint by adding ½
pint (0.06 liter) of raw linseed oil to each gallon (liter).

CONSTRUCTION METHODS

**107-3.1 INSTALLATION.** The hinged support or hinged pole shall be
installed on a concrete foundation as shown in the plans.

**107-3.2 POLE ERECTION.** The Contractor shall erect the pole on the
foundation following the manufacturer's requirements and erection
details. The pole shall be level and secure.

**107-3.3 ELECTRICAL CONNECTION.** The Contractor shall furnish all
labor and materials and shall make complete electrical connections in
accordance with the wiring diagram furnished with the project plans. The
electrical installation shall conform to the requirements of the latest
edition of National Fire Protection Association, NFPA-70, National
Electric Code.

If underground cable from the transformer vault to the wind cone site
and duct for this cable installation is required, the cable and duct
shall be installed in accordance with and paid for as described in Item
L-108, Underground Power Cables for Airports, and Item L-110, Airport
Underground Electrical Duct Banks and Conduits.

**107-3.4 BOOSTER TRANSFORMER.** If shown in plans or specified in job
specifications, a booster transformer to compensate for voltage drop to
the lamps shall be installed in a suitable weatherproof housing. The
booster transformer shall be installed as indicated in the plans and
described in the proposal. If the booster transformer is required for
installation remotely from the windcone, it shall be installed in
accordance with and paid for \[ \].

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> **The engineer should specify how the booster transformer will be paid
> for when located remotely from the windcone, i.e. as part of the
> windcone installation or, if installed in the vault, as part of the
> vault equipment.**

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**107-3.5 GROUND CONNECTION AND GROUND ROD.** The Contractor shall
furnish and install a ground rod, grounding cable, and ground clamps for
grounding the "A" frame of the 12-foot (3.5 m) assembly or pipe support
of the 8-foot (240 cm) support near the base. The ground rod shall be of
the type, diameter and length specified in Item L‑108, Underground Power
Cable for Airports. The ground rod shall be driven into the ground
adjacent to the concrete foundation (minimum distance from foundation of
2 feet) so that the top is at least 6 inches (150 mm) below grade. The
grounding cable shall consist of No. 4 AWG minima bare stranded copper
wire or larger and shall be firmly attached to the ground rod by
exothermic welding. The other end of the grounding cable shall be
securely attached to a leg of the frame or to the base of the pipe
support with non-corrosive metal and shall be of substantial
construction. The resistance to ground shall not exceed 25 ohms.

**107-3.6 PAINTING.** Three coats of paint shall be applied (one prime,
one body, and one finish) to all exposed material installed under this
item except the fabric cone, obstruction light globe, and lamp
reflectors. The wind cone assembly, if painted on receipt, shall be
given one finish coat of paint in lieu of the three coats specified
above. The paint shall meet the requirements of Fed. Spec. TT-E-489. The
color shall be in accordance with Federal Standard 595, Aviation Gloss
Orange Number 12197.

**107-3.7 LAMPS.** The Contractor shall furnish and install lamps as
specified by the manufacturer.

**107-3.8 CHAIN AND PADLOCK.** The Contractor shall furnish and install
a suitable operating chain for lowering and raising the hinged top
section. The chain shall be attached to the pole support in a manner to
prevent the light fixture assembly from striking the ground in the
lowered position.

A padlock shall also be furnished by the Contractor on the 8-foot (240
cm) wind cone for securing the hinged top section to the fixed lower
section. Keys for the padlock shall be delivered to the Engineer.

METHOD OF MEASUREMENT

**107-4.1** The quantity to be paid for shall be the number of wind
cones installed as completed units in place, accepted, and ready for
operation.

BASIS OF PAYMENT

**107-5.1** Payment will be made at the contract unit price for each
completed and accepted job. This price shall be full compensation for
furnishing all materials and for all preparation, assembly, and
installation of these materials, and for all labor, equipment, tools,
and incidentals necessary to complete this item.

Payment will be made under:

Item L‑107‑5.1 12‑Foot (3.5 m) Wind Cone, in place---per unit 

Item L‑107‑5.2 8‑Foot (240 cm) Wind Cone, in place---per unit

MATERIAL REQUIREMENTS

AC 150/5345-7 Specification for L-824 Underground Cable for Airport
Lighting Circuits

AC 150/5345-27 Specification for Wind Cone Assemblies

FED SPEC TT-E-489 Enamel, Alkyd, Gloss, Low VOC Content

FED SPEC J-C-30 Cable and Wire, Electrical (Power, Fixed Installation)
(cancelled; replaced by AA-59544 Cable and Wire, Electrical (Power,
Fixed Installation))

FED SPEC W-P-115 Panel, Power Distribution

FED STD 595 Colors Used in Government Procurement

MIL-DTL-24441/20 Paint, Epoxy-Polyamide, Green Primer, Formula 150, Type
III

Underwriters Laboratories Rigid Metal Conduit

Standard 6

Underwriters Laboratories Fittings For Conduit and Outlet Boxes

Standard 514

Underwriters Laboratories Intermediate Metal Conduit

Standard 1242

NFPA-70 National Electric Code

Master Painter's Institute

END OF ITEM L-107