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The lighting fixtures for the helipad lighting shall be as required in
contract drawings or other contract documents.
2.1.21
Painting
As specified in Section [09900, PAINTING, GENERAL] [02763A, PAVEMENT
MARKINGS].
2.2
HELIPAD MARKINGS
The helipad markings shall be [a large white "letter-H" at the center of
the helipad with broken white edge markings] [a red "letter-H" centered on
a white cross and the broken white edge markings]. The markings shall be
[retroreflective] [non-retroreflective] with dimensions as shown on the
contract drawings.
2.3
HELIPAD BEACON
The helipad rotating beacon, shall be FAA AC 150/5345-12, Type L-801H,
Class 2, except for military facilities the white beam shall be a
double-peaked white flash. The beacon shall flash the colors [white,
aviation green, and aviation yellow for a non-medical facility helipad]
[white, aviation green, and aviation red for a medical facility helipad.]
The beacon flashes shall be visible throughout 360 degrees horizontally,
and the effective intensity of the flashes shall be not less than 25,000
candelas for vertical angles between 2 and 8 degrees and not less than
12,500 candelas for vertical angles between 0 and 10 degrees. The flashes
shall be uniformly spaced with the three-color sequence flashing 10 to 15
times per minute.
2.4
WIND DIRECTION INDICATOR
The wind direction indicator shall be an FAA AC 150/5345-27, Type [L-806,
low mass supporting structure] [L-807, rigid supporting structure], Style
[I-lighted] [II-unlighted], Size [304.8 - 2438 mm (1 - 8 feet)][1 - 8 feet]
[609.6 - 3658 mm (2 - 12 feet)] [2 - 12 feet] with the fabric cone color as
required on the contract drawings.
2.5
OBSTRUCTION LIGHTING AND MARKING
Obstructions on or near the helipad shall be marked and/or lighted as shown
on the contract drawings. Obstruction marker lights shall emit aviation
red [flashing] [steady burning] [flashing and/or steady burning] light as
required. The light fixtures shall be , [multiple-socket assembly] [series
socket assembly] [FAA AC 150/5345-43, [Type L-810] [Type L-864]] as
indicated. For multiple flashing lights on a circuit, the lights shall
flash in unison. Obstruction marker lights shall be [single-unit type]
[double-unit type] [single-or double-unit type] as shown on the contract
drawings or other contract documents.
2.6
HELIPAD GLIDE SLOPE INDICATOR
The glide slope indicator for helipads shall be Chase Helicopter Approach
Path Indicator (CHAPI) two-unit system. The CHAPI shall meet the
requirements of FAA AC 150/5345-28, Type L-881, with the addition of a
filter that will provide a two-degree wide green sector in the center of
the white over red beam.
SECTION 16525A
Page 20
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