A common activity while working with slabs is defining planes. These planes are used to define the location of the slab or as a sketching plane for the slab boundaries. Usually, but not necessarily, these planes are based from an existing object or from a grid plane created using the Grids task. There are five methods for defining planes:
Coincident
Defines a plane coincident to another plane. See Define Plane as Coincident.
Offset from Plane
Defines a plane at a specified offset distance from another plane. See Define Plane using Offset from Plane.
Angle from Plane
Defines a plane at a specified angle or slope to another plane. You must define an axis of rotation and the angle or slope. See Define Plane using Angle to Plane.
Plane by Point and Vector
Defines a plane using a vector normal to the plane being defined and a third point to define the plane position along the vector. See Define Plane using Vector and Point.
Plane by Three Points
Defines a plane using three points that you identify in the model. See Define Plane using Three Points.