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SUPPORT
JOHNSTON ATOLL
TITLE
F &SNO.
Air/Ground Communications Facilities
02114
STRUCTURE/FACILITY NO.
TG 8.6
505, 506, 507 and 508
($000)
FUNDING
AGENCY
JTF -8/
RDT&E
Bop
SCIENTIFIC STATION NO.
USER
FOD
PROC
ENGR
CONST
TOTAL
FURN
PRE-GO
Prior Cost
18.4
18.4%
18.4
18.4
CRO 3-65
TOTAL
COMPLETED
DESCRIPTION
The Control Tower (Building 505) is an 18x 21 x 62-ft. high
structure (completed prior to 1963).
The tower has six floor levels as follows:
a ground floor; two (2) intermediate floors; a junction room floor; an equipment
room floor and a control room floor. A steel platform with guard rails is provided around the perimeter of the tower approximately 3-ft. below the control
room floor. The control room is hexagonally shaped and is glazed with double
paned glass set in aluminum sash. Steel pipe railing is provided around the
perimeter of the roof on which is located antennas and warning lights. Metal
stairs and handrails, located within the tower, provide access to all floor levels.
The tower is basically a steel frame structure with concrete block walls on the
lower level; exposed steel frame walls on the middle levels; corrugated asbestos cement walls from the junction room level to the steel platform; and insulated metal panel walls from the platform to the control room windows. The roof
is constructed of built-up roofing. The ground floor provides space for a generator room, cable trenches and the steel stairs. Both intermediate floors contain
the stairs, rest platforms and raceways for ducting. The junction room and
equipment room floors provide space for equipment associated with control of
aircraft. The control room provides space for traffic controllers and communications equipment.
A wood frame 53-ft. high antenna tower (Building 506), measuring 20 x 20-ft.
in plan, is located on the west side of Building 507. A 10-ft. high pole with
crossarm is provided on top of the tower on which is mounted a tactical communications antenna. The tower was completed in 1965.
The Air/Ground Tactical Communications Building (Building 507) is a 24 x 68 x
10-ft. high structure with a 13 x 34 x 10-ft. high extension located on the south
side of the main structure.
The building (completed prior to 1963) is constructed
of concrete block walls with a concrete floor and corrugated asbestos cement roof.
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