To print a paper template to mark outside tread curve, go to
Full Scale Arc Templates and enter
Running Measurements explanation Not including Tread Widening
Inside Stringer = tread points winding up and around INSIDE of stairs
from top of first rise to upper floor.
Outside Stringer = tread points winding up and around OUTSIDE of stairs
from top of first rise to upper floor.
Inside Plumb = tread points vertically (plumb).
Inside Level = tread points around INSIDE LEVEL, (or flat, as marked AROUND a circle on the floor.)
Running Measurements:
Inside Stringer
Mark-out
|
Outside Stringer
Mark-out
|
Inside Plumb
Mark-out
|
Inside Level
Mark-out
|

Left click, release and drag to measure at scale inside diagram.
Spiral Staircase Handrail True Radius Calculator Enter actual rise of handrail for entered angle of rotation.
Be sure to follow local building regulations regarding all stair dimensions.
Built something using our calculators?
Please
Send Photos!
See examples