The design strip process

Create the span segments. Specify the default span segment properties by either:

Generate span segments (and supplement and adjust if necessary)

or
Draw span segments manually.

These two methods can be used in conjunction.
Create span segment strips. You can create span segment strips from span segments with the Generate Strips tool. You cannot draw or directly edit span segment strips.
Review and modify span segment strips:
1. Examine span segment strips. Check the Lock Generated Strips box of any Span Segment that has satisfactory strips.
2. Edit span segment properties. Use the Strip Generation tab of the Span Segment properties dialog to modify the span segment strips.
3. Edit span segments manually. Use the Span Boundary, Strip Boundary, and Orient Span Cross Section tools to control the strip generation.
4. Set cross section trimming. This enables you to modify the concrete section used for shear and flexure calculations.
Continue by repeating steps 2 and 3 as necessary.