While creating a rebar, you perform several operations including   edit the axis system,  adjust the inputs, handle extremities by specifying start and end hooks,  relimit the bars, and finally create bends. 
The figure below illustrates the rebar position configuration process and provides an overview of the associated tools.
When creating a rebar, a preview shows the rebar layer as you move the mouse over the concrete design. The first step consists in selecting the first bar plane that  is the plane on which this bar is
laid. In most cases, the first bar is perpendicular to the pattern's 
direction. The second step involves determining the axis position precisely using the dedicated flag.  The last step consists in   selecting other surfaces to adjust the rebar layer so that it  fits the concrete shape. 
- About  Flags
 - Dedicated flags that provide more options help you   perform operations to define the rebar position. For more information about these options, see Context Toolbars.
 
- Color Coding
 - A color code is applied to the  various rebar supports also referred to as roles:
- The rebar support 
 (axis system) is colored in
light blue.  - The first side ( that is  the right surface)
 is colored  in green . - The layer support  (that is the bottom surface)
 is colored in pink. - The cap surface (that is  the top surface)
 is colored in dark blue. -  The second side  (
 colored in yellow). - The front side. 
 
 
  - Patterning and Rebars
 - Configuring the rebar pattern  consists in specifying the count, the pattern type, and  determine the spacing distance between the bars.
Direct manipulation tools  can be enabled and accessed by clicking the Pattern tab in the Rebar Creation dialog box.  For more information, see  About Rebar Patterning and About the Rebar Creation Assistant.
 
