9910046 RevG April 2021
ALERT:
Do not step
on ballast blocks
Attach Rail to
location closest
to Cam.
Rail Position for 5-8 Ballast blocks
PAGE
11
5. Place Ballast
Tip
: Installing the east edge row ballast blocks helps keep the
racking structure from moving as the rest of the array is built.
Tip:
Sheet Title: Ballast Layout
–
XX in the Racking Construction
Set identifies where Ballast is to be installed. Mark the roof with
chalk to speed up installation.
5.1 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
them on the “S” spacing for equal ballast distribution.
5.2 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 D
Rail Position for 1-4 Ballast blocks
Attach Rail to
location closest to
Tilt Arm.
Bend tabs at ends of Rail.
(See 5.2 to determine if required)
Bend Tabs to
capture Ballast
as required.
1
2
5
8
4
Ballast Quantity
S
3
7
6
