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• IBC 1011.1

  General

  • General scope for Section 1011.

  Works withIBC 1011.2IBC 1011.13IBC 1011.14IBC 1011.15IBC 1011.16IBC 1030

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.2

  Width and capacity

  • Stair width is at least 44 in, or 36 in serving fewer than 50 occupants.

  Works withIBC 1005.1IBC 1009.3IBC 1011.10

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.3

  Headroom

  • Stair headroom is at least 80 in measured from the tread nosing line.

  Works withIBC 1011.10

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.4

  Walkline

  • Requirements for walkline.

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• IBC 1011.5

  Stair treads and risers

  • Requirements for stair treads and risers; see linked sections.

  Works withIBC 1011.5.1IBC 1011.5.5.3

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• IBC 1011.6

  Stairway landings

  • Landings at the top and bottom of each stair, as wide as the stair and as deep as the stair width or 48 in, whichever is less; open doors project no more than 7 in into the landing.

  Works withIRC R318.7.6IBC 1009.6.3IBC 1030

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.7

  Stairway construction

  • Requirements for stairway construction; see linked sections.

  Works withIBC 510.2

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• IBC 1011.8

  Vertical rise

  • A flight rises no more than 12 ft between landings.

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• IBC 1011.9

  Curved stairways

  • Requirements for curved stairways; see linked sections.

  Works withIBC 1011.5

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.10

  Spiral stairways

  • Requirements for spiral stairways; see linked sections.

  Works withIBC 410.5

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.11

  Handrails

  • Stairs have handrails on each side per 1014; glass handrails per 2407.

  Works withIBC 1014.1IRC R318.7.8IBC 1014IBC 2407IBC 1014.4

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.12

  Stairway to roof

  • Buildings four or more stories above grade plane have one stair to the roof unless the roof is steeper than 4:12.

  Works withIBC 1011.12.1

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• IBC 1011.13

  Guards

  • Requirements for guards; see linked sections.

  Works withIBC 1015

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.14

  Alternating tread devices

  • Requirements for alternating tread devices.

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• IBC 1011.15

  Ship’s ladders

  • Requirements for ship’s ladders; see linked sections.

  Works withIBC 1607.10

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• IBC 1011.16

  Ladders

  • Requirements for ladders; see linked sections.

  Works withIBC 306.5IBC 1607.10IBC 1011.12.1IBC 1012IMC

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.5.1

  Dimension reference surfaces

  • Requirements for dimension reference surfaces.

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• IBC 1011.5.2

  Riser height and tread depth

  • Risers 4–7 in high; rectangular treads at least 11 in deep; winders 11 in at the walkline and 10 in minimum.

  Works withIRC R318.7.5IBC 1011.10IBC 1030.14.2IBC 503.1IBC Chapter 11IEBC

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.5.3

  Winder treads

  • Requirements for winder treads; see linked sections.

  Works withIBC 1011.9IBC 1011.10

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.5.4

  Dimensional uniformity

  • Riser and tread dimensions vary by no more than ⅜ in within a flight.

  Works withIBC 1030.14.2IBC 1011.5IBC 1011.5.4.1

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• IBC 1011.5.5

  Nosing and riser profile

  • Requirements for nosing and riser profile.

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• IBC 1011.7.1

  Stairway walking surface

  • Requirements for stairway walking surface.

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• IBC 1011.7.2

  Outdoor conditions

  • Requirements for outdoor conditions.

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• IBC 1011.7.3

  Enclosures under interior stairways

  • Requirements for enclosures under interior stairways.

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.7.4

  Enclosures under exterior stairways

  • Requirements for enclosures under exterior stairways.

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.12.1

  Stairway to elevator equipment

  • Requirements for stairway to elevator equipment.

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• IBC 1011.12.2

  Roof access

  • Requirements for roof access; see linked sections.

  Works withIBC 1511.2

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.14.1

  Handrails of alternating tread devices

  • Requirements for handrails of alternating tread devices; see linked sections.

  Works withIBC 1014

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.14.2

  Treads of alternating tread devices

  • Requirements for treads of alternating tread devices.

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.15.1

  Handrails of ship’s ladders

  • Requirements for handrails of ship’s ladders.

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.15.2

  Treads of ship’s ladders

  • Requirements for treads of ship’s ladders.

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.5.4.1

  Nonuniform height risers

  • Requirements for nonuniform height risers.

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 1011.5.5.1

  Nosing projection size

  • Requirements for nosing projection size.

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• IBC 1011.5.5.2

  Nosing projection uniformity

  • Requirements for nosing projection uniformity.

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• IBC 1011.5.5.3

  Solid risers

  • Requirements for solid risers; see linked sections.

  Works withIBC 1009.3IBC 1011.10

  International Building Code, 2024 · Chapter 10, Means of EgressRead the full text (opens UpCodes in a new tab)

• IBC 408.3.4

  Spiral stairways

  • Spiral stairs per 1011.10 allowed for staff.

  Works withIBC 1011.10

  International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

• IBC 508.5.5

  Spiral stairways

  • Spiral stairs per 1011.10 are allowed.

  Works withIBC 1011.10

  International Building Code, 2024 · Chapter 5, General Building Heights and AreasRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.