CHAPTER ii, SECTION 5
aaaan) aad ica aoeOe
Figure 2-77.
Station 50 - 22%2 Completed
-
?
“
of the building there was a pair of roil-down
curtains. An explosive link was provided in each
curtain assembly which if exploded, when the
curtain was in the rolled-up position, would
allow the curtain to fall freely. The floor of the
building was a concrete slab, and incorporated
an 11-foot by 34-foot bed frame foundation
supported on eight piles.
MECHANICAL. A ten-ton pneumatic bridge
crane was installed in the building, using rail
girders supported on steel brackets fastened to
the columns.
ELECTRICAL. The Electrical design features
were predicated on a mock-up structure built
hy UCRL at Livermore, California. Consideration was given to the installation of a spark-
Figure 2-79.
Figure {’-78.
Station 50 - 72%
Completed
re
™
proof floc Investigation of existing installations
showed tuat spark-proofing was not necessary
for slabs mixed with salt water and in a high
humidity atmosphere. A ground grid was installed around the building, and all building
structural members and siding were grounded.
This ground grid was also used for a neutral
ground and equipment ground. The Station
was provided with a signal terminal cabinet
with telephone provided for direct communication along the length of Station 2220 and to
Station 2210. Pwo additional telephones were
provided lor the interisland telephone system.
A series street lighting system using directional
street lighting luminaires was installed for the
area security and fence hghting svstem. Station
criteria called for a large tent and trailer camp
Sts:ion 50 - 95° Completed