AC 021 - Stair ADA and IBC requirements

archicorner
archicorner
32,279
0
Published 2020-09-26
This video talks about the ADA and IBC requirements for stairs. This includes; stair treads and risers, nosings, handrails, handrail profiles, handrail extensions, landings, head clearances and stair widths. Enjoy!

If you would like to skip to a specific portion of the video, below is an index:

Chapters
0:00 – Intro.
0:51 – Types of stairs.
2:00 – How many steps make a “stair”.
3:00 – Stair terminology.
3:55 – Tread and riser dimensions.
4:15 – Space between risers.
4:27 – Nosing options/requirements.
5:59 – Handrail requirements.
7:38 – Handrail Extensions.
9:40 – Handrail section requirements.
10:24 – Handrail Profile options.
11:02 – Stair vertical clearance requirements.
12:01 – Stair width (Minimums).
13:11 – Stair width (Occupant loads).
14:33 – When intermediate landings are required.
14:53 – Landing requirements.
16:09 – Stair requirements at exterior/wet conditions.
16:20 – Stair best practices.

Support me on Patreon:
www.patreon.com/archicorner/
or....
If you like, buy me a coffee :)
www.buymeacoffee.com/archicorner

#architecture #ADA #IBC #stairs
All Comments (21)
  • @archuser01
    At my lunch I am watching your videos 👀! No no I am so happy to watch over and over and over again)) thanks for clarifications on our heads. No boss can explain like you do
  • @lauradaniels1842
    I love all your videos. They are so well done! There was one thing at 15:10 about landings that I went back to the code to verify. The code says that the minimum depth of the landing is equal to the width of the stairway or 48", whichever is LESS (1011.6). You said it was whichever is greater. I only know this after digging through the code for a commercial project and the landing min came up.
  • @marbedesigns
    Thank you so so much for hearing my request and doing this video! It was fantastic and very helpful! I kindky apriciated. I'd share it with all my test peers. BTW you pronounced my name perfect! : )
  • @20020406
    I've been drawings stairs for over 10 yrs. Great video!
  • @katekrasnova5091
    Omg! It was my first time I watched your video ! This is just saw cool, clear and very interesting and kinda hypnotizing to watch how you are drawing and painting! 😂🎉😊 I am very happy to become your fan forever and that you so much for everything you are doing! I am sure that people and this universe with appreciate it a lot! 🎉🎉🎉🎉🎉🎉🎉🎉🎉
  • @JimmyRamirez-ic7gt
    Hi Josue, I have a commercial project where I provided 100% ADA compliance, from public walkway to the front of the building which is accessible to all three tenants entrances. Other than that, the CASP Inspector was saying that I have to also install detectable warnings in front of all the exit doors that lead onto the pavement but not onto the driveway and they are not along accessible path of traveI. I have no luck looking for code regarding this. Your reply would be much appreciated! Jim
  • @davidcooper5537
    Thank you for your videos. They are of great benefit. After viewing your Stair ADA and IBC requirements video. I wanted to point out that "nosing" is a defined term in both the IBC and IRC, "The leading edge of treads of stairs and of landings at the top of stairway flights". Every tread and landing at the top of a flight has a leading edge or NOSING regardless of the projection. Nosing projection is limited in both the IBC and ADA as you state however you cannot slope the riser even close to 30 degrees if it is in one plane as you illustrate because you will exceed the limit of the nosing projection. The face of the riser would have to consist of multiple planes for any of them to approach the 30 degree maximum allowed. Nosing is not defined in the 2010 ADA. As such the term would have the the meaning as defined in the referenced standard. The IBC is a standard referenced of the 2010 ADA Standard. The illustration of the sloped riser you show is similar to that in the 2010 ADA, the Access Boards Guideline, and the A117.1 Standard. It is my understanding that the illustrations in these documents are editorial in nature and not enforceable. In any case the drawing causes great confusion as it conflicts with the text of the each of the regulations noted above. It would be good to point out the issue in your video. Thanks again for the service you are providing.
  • @jessicaxmm
    This amazing! It will take me a decade to figure all this out by myself and you just made it so easy like a breeze and with so much fun!
  • @tomramirez6960
    What about service stairs for roof access that is not a ships ladder? Are winders permitted?
  • @jasonevans4483
    Your videos are the best. You make it so easy to follow and learn. Thank you!
  • @jjgarcia9436
    Excellent video like the others you have. I would only add that you forgot to mention this about handrails extensions: Going up 12" Going Down 24"
  • @presiskaindarmadi2662
    I looked up IBC 1011.6, it stated "...landing... equal width of stairway or 48 inches, whichever is less." I believe your video state whichever is greater. Is that any section that support this? Thank you for amazing video!