Rail Support Locations - RBI UL 2703 Installation Manual

R A I L S U P P O R T L O C A T I O N S
Stress on the RBI Solar RS-VS rail is proportional to the loading and the length of the rail between supports.
Span is the center-to-center distance between RBI Solar RS-VS rail supports (L-feet). Cantilever is the distance
from the outermost L-foot support to the end of the rail. Cantilever can not exceed 33% of the rated rail span.
Download span charts on our company website to determine spans and cantilevers for your specific application.
Rail Supports Near Splice Connectors
Continuous runs of modules require the introduction of splice connectors at rail breaks. There must be
one L-foot on one side of each splice connector. It does not necessarily have to be the closest rafter, just
the one that makes sense for your particular layout.
RBI Solar RS-VS | IG 2017
Span
Roof decking
Rafter
Either location can be used
(the best application for layout)
≈3/8"
Rafter spacing (typ. 24")
Cantilever
RS-VS Rail
Outermost L-foot
Splice Connector
Rafter
7