UFC 3-535-01
17 November 2005
Figure 13-7. FAA-L-850B, In-pavement, Uni-directional
LIGHT: FAA AC 150/5345-46
TYPE L-850B
BASE: FAA AC 150/5345-42 TYPE L-868
SIZE B.
OR FOR INSET LIGHTS FAA AC 150/5345-46
TYPE L-850BS SPECIAL SHALLOW BASE.
13mm
LAMP: 6.6A, TYPE AND WATTAGE AS
(0.5 IN)
DETERMINED BY MANUFACTURER
13mm
(0.5 IN)
252mm DIA.
(9.94 IN)
305mm DIA.
(11.9 IN)
DIMENSIONS ARE FOR REFERENCE ONLY
NOTE: TOE-IN THE LIGHT BEAM TOWARD THE RUNWAY CENTERLINE
13-9.5.7
Rigid Supports, Over 12 Meters (40 Feet)
For rigid supports for fixtures over 12 meters (40 feet) above ground level, use a
structural steel tower with a 6 meter (20 feet) LIR fiberglass mast supporting the cross
bar (MS-20 assembly), which lowers vertically through the rigid tower platform for
maintenance of the light fixtures. A diagram of a rigid tower with MS-20 assembly is
provided in UFC 3-535-02. Tower manufacturer should have at least 10 years
continuous experience in the fabrication of structural steel towers. An acceptable tower
is the SSV series rigid steel tower manufactured by ROHN Industries, or equivalent.
The manufacturer should develop the tower design details based on height and load
requirements, certified by a structural engineer. The rigid steel tower should have the
following minimum characteristics:
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