Code expert Glenn Mathewson runs through the landing requirements for exterior doors including the threshold dimensions the number of allowable steps from the threshold down to the landing and the additional code allowances for. 34 to 38 inches.
This gives enough space for someone to grab onto the rail before they start walking down the stairs.
What is the code for outside steps. According to section R3117 of the 2009 International Residential Code or IRC all concrete stairs in one- or two-story residential structures must measure at least 36. The overall width of a set of outdoor stairs should be a minimum of 4 feet in a private setting. – The maximum allowable stair rise is 7 3 4 inches and the minimum stair.
A uniform flight of stairs provides a safety factor. Equal to width of stairs but need not exceed 48. UniformSame height for all risers.
The width of the stairway on top of the handrail and under the minimum headroom height must not be less than 36. Now some common code requirements along with our recommendations. Exterior Stair Railing Code.
Stair riser heights and stair tread depths should be within the parameters of the code to avoid any potential trip hazards for inconsistencies. Maximum Projection of Railing From Wall. Entry Step Risers Treads.
Steps or landing 734 max Landing 36 min For Applicable to all exterior doors including the required egress door Exception to section R31131 254 Door swing or slider Screen and storm doors may swing over stairs Hand ai. The part of the front entry step you actually step on called Treads can be no less than 10 inches. The means of egress including the exit discharge shall be illuminated at all times the building space served by the means of egress is occupied.
2 The run shall not be less than 10 inches as measured horizontally between the vertical planes of the furthermost projection of adjacent treads. The following model code excerpt specifies the illumination required for stairways based on the International Code Council ICC Section 1006 Means of Egress Illumination 10061 Illumination required. Headroom is the vertical dimension from the stair treads to the ceiling directly above.
Here are three reference numbers for the codes pertaining to rise run and nosing in a straight run of stairs. While the finer details will ultimately be influenced by your local governments building regulations the International Building Code the International Residential Code and the standards set by the Americans with Disabilities Act of 1990 maintain that exterior stairs that are a required point of egress in other words stairs that must be crossed on your way in and out of the building. Inconsistencies or variations in risers or treads could interfere with the rhythm of the individual using the stairs.
The stripe shall be a minimum of 2 inches 508 mm wide to a maximum of 4 inches 1016 mm wide placed parallel to and not more than 1 inch 254 mm from the nose of the step or upper approach. Rail Handrails must extend a minimum of 12 inches past the riser of the top step. The distance between the stair nosing and top of the railing.
With this in mind the proportion of each stair as well as the overall staircase must be planned accordingly. But the FBC specifies ANSI A1171-09 Accessible and Usable Buildings and Facilities as a reference standard which does have 4. Stairs may not have risers greater in height than 7-34 inches or treads less than 10 inches.
Guards IBC 101113 1015 Guards are required along all open-sided walking surfaces of the stairway including landings and stairs. Stairs in an outdoor setting should allow for users to move up and down them at a quicker speed than what is required indoors. But we recommend that stairs should be at least 48 inches wide so they dont feel cramped.
Door swing or slider Screen and storm doors may swing over stairs. This rule is designed to provide enough walking space up and down the staircase. It is measured from a sloping imaginary line that connects all of the stair nosings.
If youre planning to put guardrails on each side then the width must be at least 27 below the guardrail top height. Building Code for Steps. Building codes keep stairways safe with rules that apply to the height and depth of each step support and.
Subsequently question is what is the code for outdoor steps. Both the Residential Edition of the Florida Building Code FBC and the International Residential Code IRC do not list a minimum height for stair risers. The codes only state a maximum riser height of 7-34.
Minimum Hand Clearance From Wall. 1 The rise of every step in a stairway shall be not less than 4 inches nor greater than 7 12 inches. All Risers the height of the steps and Treads the part you step on must all be the same.
– The stair treads should be at least 36 inches wide. Under the handrail the width must be at least 315 if theres one guardrail. You can view the code in its entirety here.
Stair Railing Building Code. Exterior stairs must have lighting at the stairs top landing while interior stairs require lighting at the top and bottom of the stairs. The height of your front entry step called Risers according to code can be no higher than 7 34 inches.
For code requirements the minimum staircase width is the horizontal dimension between the sidewalls of a staircase measured above the handrails. If the stairs are outside the design of the IBC stairs cannot allow water to accumulate on the walking surface. Risers must be at least 4 inches in height and the stair nosing must be between 34 and 1-14 inches.
Exterior stairs serving buildings on a site containing multifamily dwelling units shall have the upper approach and all treads marked by a stripe providing clear visual contrast.