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Home / Stair Guides

Geometric Stairs

Angular modern design with sharp geometric turns

Trusted across thousands of fit checks · updated daily
400 questions answered

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Quick answer

Can I move furniture up geometric stairs?

May require tilting or specific angles for larger items. Geometric Stairs have a minimum clearance of 36 inches. The 90° turn may limit large items.

Moving Difficulty: Moderate

Standard Dimensions

Standard geometric stairs dimensions (in)
DimensionMeasurement
Width42"
Minimum Clearance (critical)36"
Headroom84"
Total Rise105"
Tread Depth10"
Riser Height7.5"
Number of Risers14
Standard stair dimensions aren't the whole story — check whether your exact item clears this staircase, including the turn and headroom.Check stair fit →

Turn Configuration

90° angular turn — no reorientation possible, so furniture must maintain its angle. Critical clearance at the turn: 36".

Building Code Compliance

  • IRC Residential: Compliant
  • IBC Commercial: Compliant
  • ADA Accessible: Not compliant

Moving Tips for Geometric Stairs

  • Measure your furniture and the stair clearance before moving
  • Remove doors at top and bottom of stairs for extra clearance
  • Use furniture sliders or moving blankets to protect walls
  • Have at least 2 people for heavy items

Measure smart

What to measure.

Four numbers decide nearly every fit check. Get these right and the rest follows.

  1. 01Minimum clearance — the narrowest point along the entire flight
  2. 02Stair width between walls or railings
  3. 03Headroom and the diagonal at any turn or landing
  4. 04Your furniture's smallest dimension in every orientation

Don't make these

Common mistakes.

Most “it didn't fit” stories trace back to one of these oversights.

  1. ⚠Measuring the step width but missing a tighter pinch at a turn or overhang
  2. ⚠Forgetting headroom — a low ceiling or soffit can stop a tall item
  3. ⚠Assuming a landing lets you reorient when a winder turn does not
  4. ⚠Underestimating how much a handrail narrows the usable width

Go deeper

Related guides & calculators

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  • Helical StairsGuide
  • Elliptical StairsGuide
  • Floating StairsGuide
  • Cantilevered StairsGuide
  • Alternating Tread StairsGuide
  • Ship Ladder StairsGuide
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Frequently asked

Questions we keep getting.

  • What are the standard dimensions of Geometric Stairs?

    Standard geometric stairs have a width of 42 inches, tread depth of 10 inches, and riser height of 7.5 inches. The total rise is 105 inches with 14 risers.

    01
  • Can a sofa fit up geometric stairs?

    It depends on the sofa dimensions. Geometric Stairs with 36" clearance may accommodate smaller sofas (under 72" wide), but larger sectionals typically won't fit.

    02
  • What is the minimum clearance for moving furniture up geometric stairs?

    The minimum clearance on geometric stairs is 36 inches. This is the narrowest point furniture must pass through. For safe passage, furniture's smallest dimension should be at least 2-3 inches less than this clearance.

    03

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