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Straight Stair - Steel Spine Geometry - Metric Left click, release and drag to measure at scale in diagram.

Total Rise
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Ideal Rise is the rise you'd prefer.
Actual Rise is calculated so that all rises fit evenly into Total Rise, at nearest to Ideal Rise.
Ideal Rise
Rise Options
Run
Tread Overlap
Tread/Spine Gap
Bracket Angle
Bracket Width
Tread Thickness
Spine Depth
Scale

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Steel spine stair calculator diagram with full dimensions

Left click, release and drag to measure at scale in diagram - Print and use as template to mark spine end cut angles !

Running points up top of spine, to centre base of Brackets -
Mark-out

Running points up top of spine, to back of treads (where they touch spine)
Mark-out

Running Measurements Vertically - Lower Floor to top of each tread (Possible landing heights. Blue = middle)


Full Scale Bracket Template - Min Page Size =


Full Scale Bracket Template - Under Tread to Spine - Min Page Size =
Use Rulers to trim template. Adjust Bracket Angle to Vertical for centre run.



Baluster Width
Balusters / Tread
Adjust ⇆
Baluster Spacing and Position on Treads Video Baluster How To Video



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If you need to take full scale measurements directly from your monitor, adjust the size of the diagrams on screen to match a ruler. Does not affect printed sizes. Use keyboard Cursor Keys to fine tune as you adjust scale.
Adjust scale of diagrams to measure 100% scale on screen with a ruler.

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All Inch inputs and dimensions are actual physical finished sizes
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Select output Fraction Precision then Re-Calculate to display.
Fraction Precision
Lumber
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Selected value is automatically copied to clipboard. Select then Paste into text box.
Prec…
0


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