Staircase design: risers and goings

Set the floor-to-floor height, target riser and going to see the number of steps and whether they are comfortable.

Works in metric or imperial units.

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Questions students ask

What is the 2R + G rule?

Twice the riser plus the going should be between 550 and 700 mm, which matches a natural stride.

What formula does it use?

Risers = height ÷ target riser (rounded); check 550 ≤ 2R + G ≤ 700 mm.

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