Hello! Wondering if there is any organization that has knowledge about stairway standards? What applies to spiral staircases, etc. Someone you can turn to instead of reading on various sites and not knowing if it's right or wrong.
Best regards,
Martin
Best regards,
Martin
What is the problem?
No problem 
just want to know where to read about it.
just want to know where to read about it.The tread should be at least 23cm deep, in a spiral staircase it becomes in the middle of the step's width... a good spiral staircase is about 2m in diameter... step height about 18cm.....
Why is the question in the legal section?Bananaosten said:No problem
Because I didn't know where else to put it?
Where did you get this information from? I find many spiral staircases sold online that have a riser height that can be adjusted from 220-238 mm. Also, tread depths that are definitely not 23 cm deep. Then there are space-saving staircases that only go 180 degrees, where the riser height is fixed at 23 cm. The tread depth there can be 15 cm.Enk Projektet said:
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It's probably a loft staircase and it's okay to go up, but it's not fun to go down...
Yes, it is a space-saving staircase "lofttrappa" but there are spiral staircases that have a fixed height of 23 cm etc.
There are no rules as far as I've heard.. What exists are recommendations. And a guideline one should strive for in order to get the most comfortable staircase to walk in is to take step depth x 2 + step height and it should be 63-64 cm.
Isn't it on the walking line where you set the step depth?Enk Projektet said:
Where one considers the walking line to be naturally varies, but I've often read 40cm or 1/3 of the step width from the outside.
The formula step depth + 2* step height = 610-650 mm is quite common and works well for stairs in residences; stairs in public environments and outdoors should often be dimensioned a bit differently.
A stair comfortable to walk often has about 25cm or slightly more in step width and about 18 cm in step height.
Here are some nice links I can share.
http://www.forssellstrappan.se/?get=content&action=view&id=127-15
http://www.olssonstrappor.nu/trappkunskap.html
http://www.trappforum.se/faq/ordbok-trappor/
http://www.atab-trappan.se/index.cfm?id=52&l=2
http://www.hafla.se/sv-se/pdf/trappboken.pdf
This PDF is great, download and save:
http://www.sscgroup.se/upload/Www-Externt/Trappwebben-08/Projektering/Lilla_Trappboken-08_webb.pdf
Hopefully, imobil will find the thread; I think he seems to have great knowledge about stairs.
Finally, I believe the thread should be moved to, for example, building materials, building technology.
Thank you, Mikael.
What I do wonder about, however, is that there are lots of stairs being sold that do not comply with these standards. So it doesn't seem to be something that must be followed?
What I do wonder about, however, is that there are lots of stairs being sold that do not comply with these standards. So it doesn't seem to be something that must be followed?
No, exactly, a staircase that's too steep can always be called a ladder if you want.
To my knowledge, there is quite little in the legal texts that regulate the staircase. There is at least a minimum height (to avoid hitting one's head) and then some disability standards might need to be considered and evacuation rules, but mainly within public premises.
To my knowledge, there is quite little in the legal texts that regulate the staircase. There is at least a minimum height (to avoid hitting one's head) and then some disability standards might need to be considered and evacuation rules, but mainly within public premises.