QRail Installation Guide
BI 7.2.3-46
Jul-2019, Rev 4.2
BI 7.2.3-46
Jul-2019, Rev 4.2
18
The QRail external and internal QSplices are used to join two rail 
sections to provide a single rail section of a desired length. 
5.2 QRail Preparation
For the Heavy or Standard rails, join the rail sections together 
by sliding the QSplice onto the end of the rail, leaving half the 
length of the splice protruding from the end of the rail.
Tighten the splice bolt onto the rail end. Tighten to 12  -lbf 
(16 N-m).
Slide the other rail onto the splice and tighten the splice bolt 
to 12  -lbf 16N-m).
External QSplice Installation
NOTE!
The QRail Internal and External QSplices are 
a “full-strength” splice. Once it is installed 
and tightened to the recommended torque 
specification, it forms an essentially unbroken 
rail.
It may speed installation to splice rails on the 
ground and transport them to the roof in one 
piece for installation on the roof attachments.
To allow for thermal expansion/contraction, 
spliced rail lengths should not exceed 45 feet 
without a thermal break of 1/2 in. or more. Do 
not install modules over this thermal break.
Image 5.2.1
Image 5.2.2
Image 5.2.3
Image 5.2.4
DANGER
The outside edge of the 
QClick must be installed 
at least " from end or 
rail at a splice location.
BI 7.2.3-46
18
CAUTION
Spliced rails must have more than one 
support on both sides of the splice. 
Splices cannot be used in cantilever 
areas.










