Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010 User Manual page 1529

graded region A sloped area in a topographical surface.
For more information, see
grid A series of lines that you can use to help draw or place elements in a building design. Grids are useful
in the design and documentation phases of a project. In Revit Architecture, grids are datum elements.
For more information, see
ground plane A horizontal plane that represents ground level in a building model.
In Revit Architecture, you can specify the ground plane when creating a solar study for 2D and 3D views.
(See Solar Studies on page 1241.)
group A defined set of elements that can be placed as a unit in a building design. Grouping elements is
useful when you need to create entities that represent repeating units or are common to many building
projects (for example, hotel rooms, apartments, or repeating floors).
See Editing Elements in Groups
Graded Regions on page 960.
Grids on page 1093.
on page 354.
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