updates | April 26, 2026

What is the code for Stairs in Ontario?

(1) Stairs shall be inclined at an angle of not more than 45° with the horizontal, and their steps shall have risers not more than 210 mm high and treads not less than 220 mm wide exclusive of nosing.

What are the codes for stairs?

International Residential Code (IRC) The IRC stairs code states that the minimum width for stairs be no less than 36 inches. The stair riser code is up to 7.75 inches, and can not vary more than 3/8 of an inch. There are also codes in place for standard stair tread dimensions.

What is the code for Stairs in Wisconsin?

SPS 321.04(2)(d)1. 1. Stairways shall be provided with a minimum headroom clearance of 76 inches measured vertically from a line parallel to the nosing of the treads to the ceiling, soffit or any overhead obstruction directly above that line.

What is code for stairs outside?

Outdoor stair width code As a means of egress, outdoor stairs must meet all the requirements set forth in IRC section R311. 7.1 Width. Stairways shall not be less than 36 inches in clear width at all points above the permitted handrail heights and below the required headroom height.

What is the building code for stairs in Canada?

For decades, the National Building Code of Canada has suggested that stairs need to be a minimum of 21 centimetres (or 8 1/4 inches) when it comes to the treads.

Are horizontal balusters code?

There is nothing that prohibits 2x6s from being used as balusters in a horizontal rather than a vertical orientation. You will end up with a railing that resembles a classic farm yard perimeter fence. You may be familiar with that look.

What is the minimum head clearance on stairs?

2.0m.
(a) headroom The minimum headroom above stairs should be measured vertically from the pitch line. The clear headroom (h) over the entire length and width of a stairway, including landings, should be 2.0m.

What is the code for porch steps?

The stair treads should be at least 36 inches wide. Despite these minimum requirements, we recommend that stairs should be at least 48 inches wide so they don’t feel cramped. The maximum allowable stair rise is 7 3/4 inches, and the minimum stair rise is 4 inches.

Do you need building regs for a new staircase?

When you are adding or altering staircases you do need to get building regulation approval. If you think about the potential risk of someone falling from/through poorly constructed stairs you can understand why this is an important area where regulation is required.

How much space do you need between horizontal balusters?

Baluster Calculator They must be installed close enough that the space between them is less than 4 inches. Most city inspectors carry a 4-inch ball with them to test the spacing. Installed balusters should withstand 50 pounds of pressure exerted over a 1-sq. -ft area.

Are horizontal railings dangerous?

The long and short of all this research and code talk is that horizontal components in railing systems contain no climbing threat that is greater than any other guard.

What are the building regulations for stairs?

The following rules must be met: The individual rise must be between 150mm and 220mm. The individual going must be between 220mm and 300mm. The Pitch of the stair cannot be greater than 42 degrees.

What is the minimum height of a single step?

The minimum height of a step is 4 inches. You cannot have a step within a passageway; otherwise you would have a trip zone. If there is no door, then the MINIMUM height can be any height, as long as a stair is not involved. (I like the idea of changing color of floor material between the two rooms.)

How many steps can you have before a landing?

Length of flight Stairs with more than 36 risers in consecutive flights should have at least one change in direction between flights. For buildings other than dwellings, the maximum number of risers between landings should be 16 for utility stairs and 12 for general access stairs. There should not be any single steps.

Do I need a handrail for 2 risers?

The building code does not refer to the number of “steps” but it does require a handrail when there are two or more “risers”. For clarification, a “riser” is the vertical portion of a stair. The “tread” is the top of a step. A two riser minimum would translate to two steps.