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Doesn't really matter unless you'll rotate the building.
This object is used to describe attached “subsurfaces” such as overhangs, wings or fins that project outward from a base surface. This classification is used for convenience; actually, a device of this type can cast shadows on the surface to which it is attached as well as on adjacent surfaces. For example, a fin may shade its parent wall as well as adjacent walls
See the documentation for Detached Shading Surfaces, especially Shading:Site:Detailed and Shading:Building:Detailed.
If relative coordinates are used (ref: Field: Coordinate System in GlobalGeometryRules), shading surfaces entered with Shading:Site:Detailed remain stationary if the building is rotated, whereas those entered with Shading:Building:Detailed rotate with the building. If world coordinates are used Shading:Site:Detailed and Shading:Building:Detailed are equivalent.
I generally choose to use a detached shading group (image c, purple)
Note that whether or not you put the shading surface to "touch" a building surface such as a wall, it won't participate in heat transfer anyways.
Doesn't really matter unless you'll rotate the building.
This object is used to describe attached “subsurfaces” such as overhangs, wings or fins that project outward from a base surface. This classification is used for convenience; actually, a device of this type can cast shadows on the surface to which it is attached as well as on adjacent surfaces. For example, a fin may shade its parent wall as well as adjacent walls
See the documentation for Detached Shading Surfaces, especially Shading:Site:Detailed and Shading:Building:Detailed.
If relative coordinates are used (ref: Field: Coordinate System in GlobalGeometryRules), shading surfaces entered with Shading:Site:Detailed remain stationary if the building is rotated, whereas those entered with Shading:Building:Detailed rotate with the building. If world coordinates are used Shading:Site:Detailed and Shading:Building:Detailed are equivalent.
I generally choose to use a detached shading group (image c, purple)
Note Not that whether or not you put the shading surface to "touch" a building surface such as a wall, it won't participate in heat transfer anyways.
Doesn't really matter unless you'll rotate the building.
This object is used to describe attached “subsurfaces” such as overhangs, wings or fins that project outward from a base surface. This classification is used for convenience; actually, a device of this type can cast shadows on the surface to which it is attached as well as on adjacent surfaces. For example, a fin may shade its parent wall as well as adjacent walls
See the documentation for Detached Shading Surfaces, especially Shading:Site:Detailed and Shading:Building:Detailed.
If relative coordinates are used (ref: Field: Coordinate System in GlobalGeometryRules), shading surfaces entered with Shading:Site:Detailed remain stationary if the building is rotated, whereas those entered with Shading:Building:Detailed rotate with the building. If world coordinates are used Shading:Site:Detailed and Shading:Building:Detailed are equivalent.
I generally choose to use a detached shading group (image c, purple)
Not that whether or not you put the shading surface to "touch" a building surface such as a wall, it won't participate in heat transfer anyways.