### **ITEM L-102 HAZARD BEACON**

DESCRIPTION

**102-1.1** This item shall consist of furnishing and installing a
hazard flashing beacon in accordance with these specifications. This
work shall include the mounting, leveling, wiring, servicing, painting,
and testing of the beacon and all materials and incidentals necessary to
place it in operating condition as a completed unit to the satisfaction
of the Engineer. This item shall include a mounting platform if
specified in the plans.

EQUIPMENT AND MATERIALS

**102-2.1 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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**102-2. BEACON.** The beacon shall conform to the requirements of AC
150/5345-43, Specification for Obstruction Lighting Equipment.

**102-2.3 PANEL BOARDS AND BREAKERS.** Panel boards and breakers shall
conform to the requirements of Fed. Spec. W-P-115.

**102-2.4 WEATHERPROOF CABINETS.** Weatherproof cabinets shall conform
to National Electrical Manufacturers Association Standards and shall be
constructed of steel not less than No. 16 USS gauge.

**102-2.5 WIRE.** Wire in conduit rated up to 5,000 volts shall conform
to AC 150/5345-7, Specification for L-824 Underground Electrical 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.

**102-2.6 CONDUIT.** Rigid steel conduit and fittings shall conform to
the requirements of Underwriters Laboratories Standard 6, 514, and 1242.

**102-2.7 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 liters) 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 orange or white paint by adding ½ pint
(0.06 liters) of raw linseed oil to each gallon (liter).

**102-2.8 FLASHER.** The beacon flasher shall be a standard commercially
available unit designed for the service intended. The mechanism in the
flasher shall be designed to flash not more than 40 and not less than 12
flashes per minute. The flashing switch shall be of the mercury
contact-type encapsulated in nonbreakable plastic. The entire unit shall
be housed in a weatherproof cabinet.

CONSTRUCTION METHODS

**102-3.1 PLACING THE BEACON.** The beacon shall be mounted on a beacon
tower, platform, building roof, or on a pole as shown in the plans.

**102-3.2 MOUNTING AND LEVELING.** The support to which the beacon is
fastened shall be accurately leveled before mounting the beacon.

**102-3.3 FLASHER.** If shown in plans or specified in job
specifications, a separate flashing mechanism for the beacon shall be
installed adjacent or near the beacon. The mechanism in this flasher
shall be designed to flash not more than 40 and not less than 12 flashes
per minute.

**102-3.4 MOUNTING PLATFORM.** If shown in plans or specified in job
specifications, the Contractor shall construct a special mounting
platform for the beacon, flasher, and incidental equipment. Design and
materials for the special platform shall be as shown in the plans. This
mounting platform may be constructed on top of a steel beacon tower, or
wood pole if specified, and shall be as shown in the plans.

**102-3.5 WIRING.** The Contractor shall furnish all necessary labor and
materials and shall make complete aboveground 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 for the power feed from the transformer vault to
the beacon site and duct for the installation of this cable is required,
the cable, ground rods and duct shall be installed in accordance with
and paid for as described in Item L-108, Underground Power Cable for
Airports, and Item L-110, Airport Underground Electrical Duct Banks and
Conduit.

If lightning protection is specified in the plans or proposals as a part
of this item, it shall be in accordance with Item L-103, Airport Beacon
Towers, paragraphs 103-2.3.

**102-3.6 PANEL AND CABINET.** If shown in plans or specified in job
specifications, the Contractor shall furnish and install a circuit
breaker panel. The panel shall be of the type and rating indicated in
the plans, and it shall be mounted in a weatherproof cabinet. The
cabinet shall be located near the beacon or as directed by the Engineer.

**102-3.7 CONDUIT.** All exposed wiring shall be run in not less than ¾
inch (19 mm) galvanized rigid steel conduit. No conduit shall be
installed on top of a beacon platform floor. All conduit shall be
installed to provide for drainage. If mounted on a steel beacon tower,
the conduit shall be fastened to the tower members with "wraplock"
straps, clamps, or approved fasteners spaced approximately 5 feet (150
cm) apart. Conduit shall be attached to wooden structures with
galvanized pipe straps and fastened with galvanized wood screws not less
than No. 8 or less than 1‑¼ inches (31 mm) long. There shall be at least
two fastenings for each 10-foot (3 m) length.

**102-3.8 BOOSTER TRANSFORMERS.** If shown in plans or specified in job
specifications, a booster transformer to compensate for voltage drop to
the beacon shall be installed in a suitable weatherproof housing under
or on the tower platform or at the base of the tower or pole. The
installation shall be as indicated in the plans and described in the
proposal. If the booster transformer is required for installation
remotely from the beacon, 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 beacon tower, i.e. as part of the
> beacon installation or, if installed in the vault, as part of the
> vault equipment.**

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**102-3.9 PHOTOELECTRIC CONTROL.** If shown in plans or specified in job
specifications, the Contractor shall furnish and install an automatic
control switch at the location indicated in the plans. This switch shall
be a photoelectric type. It shall be a standard commercially available
unit that will energize when the northern sky illuminance falls below 60
footcandles (645.8 lux) but before reaching a level of 35 footcandles
(367.7 lux). The photoelectric switch should de-energize when the
northern sky illuminance rises to a level of not more than 60
footcandles (645.9 lux). It shall be installed, connected, and adjusted
in accordance with the manufacturer\'s instruction.

**102-3.10 PAINTING.** Wood poles and wooden parts of mounting platforms
shall be given one priming coat of white or aviation-orange paint after
fabrication but before erection and one body and one finish coat of
aviation-orange paint after erection. Steel mounting platforms shall be
given one priming coat of corrosion‑inhibiting primer before erection
and one body and one finish coat of aviation-orange paint after
erection. All equipment under this contract and exposed to the weather
shall be given one body and one finish coat of aviation-orange or white
paint as required. This shall include beacon (except glass surfaces),
breaker cabinet, and all conduit and transformer cases. It shall not
include air terminals.

The paint shall be applied uniformly in the proper consistency by
skilled painters. The finished paint shall be free from sags, holidays,
and smears. Each coat of paint shall be given ample time to dry and
harden before the next coat of paint is applied. A minimum of 3 days
shall be allowed for drying on wood surfaces and a minimum of 4 days
shall be allowed for drying on metal surfaces. Painting shall not be
done in cold, damp, foggy, dusty, or frosty atmospheres, or when air
temperature is below 40º F (4º C), nor started when the weather forecast
indicates such conditions for the day.

All surfaces shall be cleaned before painting. The surfaces shall be dry
and free from scale, grease, rust, dust, and dirt when paint is applied.
All knots in wood surfaces shall be covered with shellac immediately
before applying the priming coat of paint. Nail holes and permissible
imperfections shall be filled with putty.

The ready-mixed paint shall be thinned for the priming and body coats in
accordance with the manufacturer\'s recommendations. In the absence of
such recommendations, the following shall apply:

**a.** Body coats (for both wood and steel surfaces) - add ½ pint (0.06
liters) of turpentine to each gallon (liter) of ready-mixed paint for
body coats.

**b.** Finish coats (for both wood and steel surfaces) - the ready-mixed
paint shall be used as it comes from the container for finish coats.

**102-3.11 TESTING.** The installation shall be tested in operation as a
completed unit prior to acceptance. Tests shall include taking megger
and voltage readings. The voltage tolerance for testing shall be as
specified by the beacon manufacturer. Testing equipment shall be
furnished by the Contractor. The insulation resistance to ground of the
beacon supply circuit shall be not less than 50 megohms when measured
ungrounded.

Tests shall be conducted in the presence of the Engineer and shall be to
the Engineer's satisfaction.

METHOD OF MEASUREMENT

**102-4.1** The quantity to be paid for shall be the number of beacons
installed as completed units in place, accepted, and ready for
operation.

BASIS OF PAYMENT

**102-5.1** 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-102-5.1 Hazard Beacon, in place---per unit

MATERIAL REQUIREMENTS

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

AC 150/5345-43 Specification for Obstruction Lighting Equipment

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

FED SPEC TT-P-664D Primer Coating, Alkyd, Corrosion-Inhibiting, Lead and
Chromate Free, VOC-Compliant

MIL-DTL-24441/19B Paint, Epoxy-Polyamide, Zinc Primer, Formula 159, Type
III

FED SPEC W-P-115 Panel, Power Distribution

FED STD 595 Colors Used in Government Procurement

Underwriters Rigid Metal Conduit

Laboratories

Standard 6

Underwriters Fittings for Conduit and Outlet Boxes

Laboratories

Standard 514

Underwriters Intermediate Metal Conduit

Laboratories

Standard 1242

NFPA-70 National Electric Code

NFPA-780 Standard for the Installation of Lightning Protection Systems

Master Painter's Institute

# END OF ITEM L-102 {#end-of-item-l-102 .Style1}

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