Configure each sub-array layout using the Sub-Array tabs. Modules may only be in one orientation per sub-array. For example, if a sub-array of portrait modules has the top row in a landscape configuration, move the landscape modules to a new sub-array.
Module rails run left to right on screen.
Define the Edge / Corner zones of the array. Edge Zones and Corner Zones are high wind load zones near the edges of the roof and have a width defined by the building dimensions. Rails with attachments that lie within edge zones require additional attachments in order to obtain a shorter rail span. The edge zones and/or corner zones of the roof area shall be determined based on the building's least horizontal dimension (LDH). The edge zone distance, a, is equal to 10% of the LDH (a = .1 * LDH). Rail spans in the corner zone shall be a maximum of 24 inches and this restriction will only apply to the roof attachments located within the end and edge zones (does not apply to modules or rails that overhang into the zone). Furthermore, all rail spans requiring an edge zone reduction (shaded cells from span tables in engineering packet) shall be reduced by 24 inches to a minimum of 32 inches.