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Why are there are typically 13 steps to every staircase?

Question #67208. Asked by sbj.

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zbeckabee
Answer has 5 votes
Currently Best Answer
zbeckabee
Moderator
19 year member
11752 replies avatar

Answer has 5 votes.

Currently voted the best answer.
Ergonomically and for safety reasons, stairs have to have certain measurements in order for people to comfortably use them.

Maximum riser height, typically 8.25 inches (210 mm). Note that by specifying the maximum riser height and minimum tread length, a maximum slope is established. Residential building codes will typically allow for steeper stairs than public building codes.

All that remains is basic math with regards to ceiling height.

link https://en.wikipedia.org/wiki/Staircase

Jun 20 2006, 11:54 AM
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Baloo55th
Answer has 0 votes
Baloo55th
22 year member
4545 replies avatar

Answer has 0 votes.
I've got 14 between the ground floor and the first floor, not counting the floors themselves. (No second floor.)

Jun 20 2006, 12:46 PM
Arpeggionist
Answer has 2 votes
Arpeggionist
21 year member
2173 replies

Answer has 2 votes.
In my building, there are 17 steps between each floor. Last place I lived there were 15. I was unaware that there was a standard anywhere for such a thing.

Jun 20 2006, 5:46 PM
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