Therefore if a handrail is provided on one side, the clear width of the stairs shall not be less than 31 ½ inches and when handrails are provided on both sides, the clear width shall not be less than 27 inches. This collection contains all CSA Group standards referenced in Ontario Building Code and is essential for those working on the design and construction of new buildings as well the alteration, change of use, and demolition of existing buildings. Now when handrails are introduced they shall not project more than 4 ½ inches on either side. Ontario Building Code Volume 2 stair codes stair railing guardrail handrail landing amp platform building design amp build specifications. The minimum width for stairways shall not be less than 36 inches clear. Now let’s get into what those residential stair requirements are… MINIMUM STAIR WIDTH What is the Minimum Width of a Stair? In this post we will be looking at the code standards related to residential stairs in accordance with the International Residential Code (IRC).įun Tip: What’s the difference between the IBC and IRC? Be sure to check out this POST.įun Tip: Looking for Commercial Stair Requirements? Be sure to check out this POST. Note that when looking for commercial stair standards, one must look at the International Building Code (IBC).
Several components are looked at such as stair width, headroom, riser and tread heights. 40 Sheppard Avenue West, Fourth Floor, Suite 400, Toronto ON, M2N 6K9 Tel: 416-487-HCRA (4272) Fax: 416-352 -7724 of 5. When it comes to residential stair standards, the 2018 International Residential Code (IRC) establishes minimum requirements for stairs to insure a level of safety to the public. Are A lternating Tread Devices Code Compliant ?.
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