New York City Subway Stairs Trips
Why Home Improvement Stack Exchange recommends it
DIY Stack Exchange answerers link it when arguing that every stair riser must be identical, using real footage of people tripping on a single uneven step.
Recommended by 0 people across 0 different months, 2020 to 2021.
What it is
A 1m28s clip of commuters on a New York City subway staircase repeatedly stumbling at one step whose rise differs slightly from the others. The RedCat Partnership, a workplace safety firm, uploaded it to show how people settle into a stair-climbing rhythm and trip when it is broken.
What people said
Cites MonkeyZeus · 2020-09 · Home Improvement Stack Exchange · on “Should I make my two steps have the same rise or keep one closer to a typical height?”
Make every single rise absolutely identical, period. Video of people consistently tripping on NYC subway stairs which have a single non-uniform risen step [this video] I would test to see if 2 x 5.25 inch rises feel more natural or 3 x 3.5 According to [LINK] : Stair riser heights shall be 7 inches (178 mm) maximum and 4 inches (102 mm) minimum . Stair tread depths shall be 11 inches (279 mm) minimum. so it might not be a good idea to do 3 x 3.5
Cites Harper - Reinstate Monica · 2021-04 · Home Improvement Stack Exchange · on “Is there a benefit to having a switch control an outlet?”
It's in the Building and Electrical Codes You may have noticed that you can walk into a room that you've never been in before, and reach for a light switch, your hand has a really good chance of finding it. It's almost like magic, and it's so universal that people take it for granted . Actually, it's no accident. It's required by both the electrical and the building codes. Every room must have a light, and the light must be operated in a switch located at -- well, your hand knows. Here's another non-accident. Ever go up a stairway, go the first couple of steps and then your feet just know what to do ? That's because of a rule that says on a stairway, every step's rise and run must be identic
Cites masterX244 · 2021-07 · Home Improvement Stack Exchange · on “Is is safe to use LED strips that shine onto stair risers instead of directly onto treads?”
Dropping this link (found it on a different stackexchange) on stairs where one step is off: [this video] The guys there trip since the one step near the top is slightly larger