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Document #800-0351-001 Rev B
Page 16
ZS COMP INSTALLATION MANUAL FOR COMPOSITION SHINGLE ROOFS - U.S.
4.2 Fixed Rules
The rules and guidelines described in this section, together with the Span Tables, are important
factors in array design and must be considered when adjusting or customizing array designs.
Installers must be aware of these rules when making field adjustments during installation.
4.2.1 Laws of Spacing and Distance
Maximum Allowable Spacing.
The maximum allowable spacing between roof attachment points
is determined by various site-specific and building inputs, which are captured in the Zepulator and/
or the Span Tables.
Maximum Cantilever.
The maximum module cantilever distance is always 1/3 of the maximum
allowable spacing.
Module Corner Minimum Distance.
Zep Solar hardware such as Leveling Feet and Ground Zeps
must be installed a minimum distance of 2 inches or 50mm from module corners, measured from
the center of the Leveling Foot Rockit.
Figure 4.2 Maximum Spacing, Cantilever, and Corner Distance
Maximum allowable spacing
(site and project specific)
Minimum distance:
2” or 50 mm
Maximum cantilever is 1/3 of the
maximum allowable spacing.
