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Input
Add setting in Load Generation options for "Exclude roof portion covered by other roof. It is checked by default.
Load Generation
If checked, the program discounts the redundant loads that are created when one building roof surface is in front of another. In doing so, it divides the roof panels into triangular and trapezoidal segments, increasing the number of wind loads on the structure. It takes into account end zones and NBC I-7 Note 8 loads when splitting up roof.
Walls and Roofs
If a roof frames into a wall on the same storey of a taller block, then the covered portion of the wall is excluded. In some cases the portion of a roof covered by a wall is excluded.