Stair GeometryThe rule that makes a stair comfortable, and the dimensions to use.ArchitectureA comfortable stair keeps twice the rise plus thegoing within a narrow band.2 x rise + going = 550 to 700 mmRise 175, going 275350 + 275 = 625comfortableRise 200, going 250400 + 250 = 650steeper, still in band3.0 m floor to floor17 risers at 176 mmrisers must be equalTHE COMMON MISTAKELeaving one shorter riser at the topAll risers exactly equalPeople climb stairs without looking after the first two steps. An unequal riser ateither end is the most common cause of falls on a stair.Educational reference only. Rise, going, pitch, width, headroom andhandrails are set by building regulations.Stair Geometrylearnposters.com
Stair Geometry — printable design wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Stair Geometry poster

The rule, 3 worked examples, and the mistake everyone makes.

Educational reference only. Rise, going, pitch, width, headroom and handrails are set by building regulations.

Questions about the Stair Geometry poster

What’s on the Stair Geometry poster?
The rule, 3 worked examples, and the mistake everyone makes. A comfortable stair keeps twice the rise plus the going within a narrow band.; 2 x rise + going = 550 to 700 mm; Rise 175, going 275 = 350 + 275 = 625; Rise 200, going 250 = 400 + 250 = 650; 3.0 m floor to floor = 17 risers at 176 mm; Common mistake: Leaving one shorter riser at the top → All risers exactly equal. Educational reference only. Rise, going, pitch, width, headroom and handrails are set by building regulations.
Who is the Stair Geometry poster for?
Stair Geometry belongs to the Architecture section rather than to a school year, because design is not something one grade owns. Anyone learning construction technology can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Stair Geometry poster?
Use it when sizing a stair well. Stairs eat more plan area than students ever allow. A wall chart earns its place by being glanceable from where the work is happening, so Stair Geometry belongs on the wall where that design work actually happens, within glancing distance, rather than filed away.
What other posters go with Stair Geometry?
The Envelope, The Cavity Wall and Cladding Systems sit alongside Stair Geometry in the Architecture section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.The EnvelopeThe Cavity WallCladding Systems
Is the Stair Geometry poster free to download and print?
Yes. Stair Geometry downloads as a free PDF with no account, no email and no watermark, like everything else in the Architecture section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Stair Geometry poster print at?
Stair Geometry is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Stair Geometry loses nothing.Printing guide

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