Modifying Rebar

To select a new rebar shape

1. Select the rebar to be modified.
2. Select a new shape from the Rebar Shape Type drop-down on the Options Bar.
3. Optional.To select from the Rebar Shape browser, click on the Options Bar.

   Rebar will retain its constraints to its host. However, significant shape changes can extend rebar beyond the cover reference of the host.

Rebar will retain its constraints to its host. However, significant shape changes can extend rebar beyond the cover reference of the host.

To select a new rebar bar type

1. Select the rebar to be modified.
2. In the Type Selector at the top of the Properties palette, select the desired rebar type.

Rebar size can alter the rebar shape, possibly causing it to fail if the bend (fillet) radius of the bar is too big for the current configuration.

To modify a rebar sketch

1. Select the rebar to be modified.
2. Click Modify | Structural Rebar tabMode panel Edit Sketch.

   The selected rebar is in sketch mode.

3. Using the tools on the Modify <Element> tab, adjust the rebar sketch.
4. Click Modify Structural Rebar > Edit Rebar Sketch tabMode panel Finish Edit Mode.

Shape Handles

The flexible geometry of rebar is controlled by several handles:

• You control the shape of the bar with:
  • a handle at each end of the bar (blue circles)
  • a handle each edge (blue triangles)
• You control the location of the plane in which the rebar lies with an additional handle
• You control the length of a set of rebar with another handle.

A plane defines each handle which can be constrained along the direction perpendicular to the plane. Planes used for rebar position and set length planes are evident in the images above. Planes defining rebar shape handles are seen in the following image.

Segments snap and attach to the host cover when moved.

Rebar Shape Snapping Behaviors

Due to the nature of cover references and how rebar is placed, rebar does not snap to its relative Revit environment, such as snap points and snap lines. Resizing and other modifications to rebar will react only to the cover reference of the host in which it is placed.

Cross section of concrete host showing cover reference	Default placement of rebar in the cover reference	Snap position to cover reference using Rebar Shape Controls

To edit rebar in relation to its Revit environment, overriding the cover reference snapping behaviors, you can select individual elements of the rebar for adjustment.

Place the cursor over the element of the rebar and press TAB. You can now edit the element with typical snapping behavior.

Snap position to joined element edge using rebar line segment selection

Snapping Tolerances

To snap a rebar handle to cover or to a stirrup rebar handle, the handle must initially lie a small distance (a tolerance) from the reference cover or handle plane.

For rebar cover constraints, the tolerance is equal to 1/2 * bar diameter.

For constraints to other rebar (stirrup), the tolerance is equal to 1/2 * (bar diameter + stirrup bar diameter).