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Document #800-0329-001 Rev F
File Generated July 3, 2013
Page 21
ZS SPAN INSTALLATION MANUAL FOR RAIL-BASED APPLICATIONS - U.S.
Figure 4.2 Spacing and Cantilever I
East-West Tile Hook/Spanner Bar
spacing is a multiple of the distance
between rafters, equal to or less
than the maximum allowable East-
West span.
Cam Foot North-South
spacing is determined by
the module dimension plus
1/2 inch
Down-roof
Module Cantilever: Cam Foot center to module edge.
This cantilever runs East-West only.
For a North-South drop-in, module cantilever
is always 1/3 of the maximum allowable East-
West Tile Hook/Spanner Bar spacing.
Tile Hook
PV
module
Ground Zep
Interlock
1/2 inch gap
Cam Foot
Rafter
Tile Hook North-South
spacing is a multiple of the
Tile Reveal, equal to or less
than the maximum allow-
able North-South span.
Spanner Bar
Array Skirt
Spanner Bar cantilever: Tile Hook
to module edge with supporting
Cam Foot
For a North-South drop-in, the
maximum allowable cantile-
ver for Spanner Bars with
regard to roof attachments
(e.g., Tile Hooks) is 1/2 of the
North-South Tile Hook spac-
ing but never greater than 24
inches.
North-South Drop-in, Rafters Running North-South