Rail 1
Rail 2
6. Place Ballast
6.3 Ballast must be placed as shown. Ballast quantity
affects the Ballast placement on the Rails and in
some cases additional Rails are required as noted
below.
6.1 Install a Rail onto array in locations where Ballast is
required. Bolt to both Module Connectors and tighten
to
6 ft-lb.
ALERT:
Every Rail must be fastened to two Module
Connector assemblies.
Tip:
Ballast and Rails are only placed on
“S”
spacings.
Center Rails on the
“S”
spacing.
6.2 Place Ballast onto Rails. If rapid cyclic movement of
system is expected e.g., due to seismic activity or
building vibration from activities within or nearby the
structure, bend the Rail tabs to secure Ballast.
ALERT:
Install Mechanical Attachments before going
to next step. See Appendix B
Tip
: Installing the north row ballast blocks helps keep
the racking structure from moving as the rest of the
array is built.
*ALERT:
Modules longer than 2100 mm with 7 or 8
ballast blocks require two (2) Rails. Install Rail 2 on
top of Rail 1 and tighten to
6ft-lb
.
Bend Tabs to capture
ballast as required.
Rail Position for 1-4 Ballast blocks
Rail Position for 5-8 Ballast blocks
3
1
2
4
5
6
7*
8*
Ballast Positioning for 1-8 Ballast blocks
Attach Rail to
location closest
to Cam.
Attach Rail to
location closest
to Tilt Arm.