ae
JOHNSTON ATOLL
F&sSNO.
SUPPORT
TITLE
0305X
Conduits Under Runway
JTF
BoD
SCIENTIFIC STATION NO.
STRUCTURE FACILITY NO.
USER
None
None
FOO
FUNDING
($000)
CONST
TOTAL
Prior Cost
104.5
104.5
PRE-GO
Prior Cost
11.6
11.6
116.1
116.1
AGENCY
AEC
DPWO
Letter
ENGR
PROC
FURN
PRE-GO
!
Order
3551
, TOTAL
COMPLETED
mo
RO
oO f
DESCRIPTION The following conduits (completed in 1964) are routed under the
runway at coordinate E 197,300 at the runway centerline:
Four 4~inch diameter conduits for electrical power cables.
Four 4~inch diameter conduits for communication cables.
One 10-inch diameter freshwater conduit.
One 16-inch diameter saltwater conduit.
Three 24-inch diameter conduits tor signal cable.
Two 36-inch diameter conduits as spares for future utility
requirements.
All conduits are approximately 300 feet long, installed in one trench 26 feet
wide and backfilled with concrete. The top of each conduit is at least one
foot below the surface of the runway. Two reinforced concrete manholes are
provided on each side of the runway. The electrical power conduits terminate
in one set of manholcs and the communication and signal cable conduits terminate in the other.
DRAWINGS:
91-079-Cl and C2
3-29
VOL
I