A helix (with varying pitch) in a column of round cross-section is shown below:
To define a helix:
- In the Special reinforcement dialog select the reinforcement type - helix.
- Define the following values in the dialog (the Shape parameters field):
- angles of hook bend at the bar beginning and end: 90 degrees,
- hook length 0.06 m.
- Click
(Points). - In the drawing, indicate circle center and radius (definition of a helix within the column cross-section).
- Indicate point 1 (shown in the drawing above).
- Indicate point 2 (shown in the drawing above - it completes definition of the helix with default helix pitch over the segment 1-2).
- Select the Spiral pitch option by entering the letter S into the command line.
- Specify a new value of the spiral pitch, e.g.: 200 mm.
- Indicate point 3 (shown in the drawing above); the reinforcement defined is illustrated in the drawing below.
