CHAPTER Ii, SECTION 3
PARTICIPATION: 20 and 33
DESIGN PSI:
3 psi
CONSTRUCTION: 2-19-58/4-20-58
To obtain this station, a 14x37-foot woodframed room was added to Station 1520. The
structure was built over an extension of an
existing concrete floor slab and foundation.
Height of the building was 8 feet with a 7-footwide by 1314-foot-long area at one side rising
12 feet. The structure was of wood stud wall
construction with plywood sheathing and flat
roof joist framing with plywood sheathing and
composition roofing. Two structural steel mirror frame assemblies were provided inside the
structure.
STATIONS:
1523.01 through 1523.04
SITE:
Yvonne
USER:
LASL
PURPOSE:
Mirror Towers and
Shelters
Station 1522
40% Complete.
zontal member were provided on each of the
four sides of the tower. Each tower frame and
footing was housed in a 1314-foot-square wood
frame shelter built over a continuous foundation
PARTICIPATION: 20
DESIGN PSI:
(Neg. No. W-V-240-6)
Figure No. 2-48.
None
CONSTRUCTION: 2-15-58/4-20-58
Four identical steel frame towers with wood
frame enclosing shelters were provided for Stations 1523.01 through 1523.04. Tower footings
were 10-foot, 2-inch-square by 3-foot-thick re-
wall and footing and rising to a lowerlevel plate
line at Elevation+31.0 support of a flat slope
roof. The shelter framing was of wood stud wall
construction with plywood sheathing and compo-
sition roofing. Each shelter had a wood frame
and plywood platform interior platform at Ele-
vation +24.0. Access to the tower base and upper
inforced concrete. Tower framing consisted of
four 6-inch-diametersteel pipe columns on 9-foot
centers at their base Elevation + 6.5, rising to
level platform was provided by doorway openings, vertical wood ladder to the upper level,
and grating at Elevation +26.0. Two panels
of angle X-bracing with one intermediate hori-
spacing pattern. The station shelter south walls
support a 5-foot-square steel platform frame
and steel rung ladder to the base level. The four
stations were grouped in a close staggered
away from Station 20 were extended to meet the
(Neg. No. W-V-258-10)
Figure No. 2-49.
1523 Stations — 95% Complete.
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