In several building codes including the 2006 IRC Section R202 these terms are defined clearly.
(Class meets 4 times) (4 sessions instructor: Jason Griffin Construction Association of Michigan.
For a complete list of articles on stairs, railings, and ramps, their inspection, trip hazards, and good design, see, stairs, railings, landings, ramps - inspections, codes.
Stairs are 84cm wide.
Search BOX as a quick way to find information you need.Is a landing required at the top of stairs?In building inspections when we find a home with no rails at all along open stairs and balcony-walkways, we infer that these (often beautiful) open designs were built without a building permit, certainly without inspections and approvals by any building department in North America.In the stairwell shown above, safest would have been a stair railing on both sides of the stairway but we didn't want to give up the passage space to a second rail.The largest tread width or riser height in any flight of stairs shall not exceed the smallest by more than 3/8 inch.Above: a wide stairway at the west end of Grand Central Terminal in New York City uses a central handrailing as well as continuous handrails at either side of the stairs.(7) All parts of stairways shall be free of hazardous projections, such as protruding nails.Handrailings will protrude into and may reduce the nominal the stairwell width.
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Watch out : If you build stairs with a non-graspable stair rail or guard stair rails ) you must provide a graspable handrailing handrails handrailings ) and the dimensions, spacing, height, projection, etc.
This article series explains and illustrate the requirements for safe, useable hand railings on steps and stairs, both interior and exterior stairways.
Dimensions Stairway Chair Lifts Reader Question : o exterior concrete stairs leading to two terraces apartments have to be a certain width?
If the horizontal profile of a stairway handrailing is too fat (we give an example below, thumb grooves help but don't eliminate the hazard - for oversized stair rails simply can't be grasped securely.Stairway width should also be equal to or greater than 36" of clear unobstructed space between the top of the handrail (the permitted handrailing height) and the required headroom clearance upper height.Click here FOR course dates AND TO register.Nevertheless, a "CO" does not prevent accidents nor litigation.It's easy to be confused about the difference between handrails, stair rails and guardrails and their different uses, codes, and designs.For more information regarding the Renovation, Repair, Painting (RRP) Rule, visit the EPA website.This stair is missing both handrailings and a stair rail or stair guard along the stair open side.
(3) Riser height and tread depth shall be uniform within each flight of stairs, including any foundation structure used as one or more treads of the stairs.
This course is the EPA Renovation, Repair, and Painting (RRP a one-day course that provides basic lead-based paint information to contractors who perform renovations, repairs, and painting activities in houses built before 1978 or child-occupied facilities, as required by EPA and the State of Michigan.