Formula variables
- Offset height is the required rise or drop in millimetres.
- Angle is the bend angle used for each matching offset bend.
- Obstruction width is used for saddle layout length.
- Spacing is the distance between matching bend marks before field adjustments.
Assumptions
- Spacing and shrink are geometry estimates based on the entered angle and offset height.
- Four-point saddle layout adds obstruction width between two matching offset sections.
- Actual marks depend on raceway type, bender, stub location, bend radius, and field tolerance.
- This does not check maximum bends between pull points, fill, pulling tension, or local authority requirements.
Examples
30 degree offset. A 150 mm offset at 30 degrees gives about 300 mm bend spacing and 40.19 mm shrink.
Four-point saddle. A 120 mm saddle at 30 degrees with a 240 mm obstruction screens to about 720 mm total layout length.