Albina Co., Inc.

Spiral Math Calculator

Plan View Radius: * Plan View Diameter: Overall Height of Bent Section: * Rise Height: No. of Rises: Arc in Plan/Overall Run: * Degree Turn in Plan: Tread Width & Stringer: Number Treads: Rise Per Foot: Direction of Spiral * Degree of Pitch (calculated): Arc Length (calculated): Notes:

* Albina must have Plan View Radius, Overall Height of Bent Section Arc in Plan/Overal Run, Direction of Spiral to produce a spiral

All dimensions are entered in inches and all outputs will be in inches.
All dimensions are to be rounded to .xxx
Enter consistent dimensions(i.e. if you enter an inside dimension for one input, enter an inside dimension for your other inputs. Do not mix inside, outside, and centerline dimensions).

**Albina takes no responsibility for the calculated results.