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29 post(s) First 1 2 > Last
hallway width for ADA requirements
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Re: hallway width for ADA requirements By  peach!!

Posts: 0

3/31/2009 5:21:00 PM

IBC 1003.3.4 boots you to IBC 1104 and A117.1 for the technical accessibility requirements... which will say 36" for segment lengths >24"..


Re: hallway width for ADA requirements By  rlmarch

Posts: 0

3/31/2009 7:37:00 PM

Doc Bitner

Welcome to the Bulletin Board

While the ADA requires a minimum clearance for wheelchair passage, the Group B "Business" occupancy classification will require a minimum 44" corridor width and if a maneuvering space is required for wheelchair turning, a 60" turning radius is required. There are a lot of other requirements too numerous to mention.

Have you contacted an architect yet?

If not, I would strongly suggest you employ one in your area that you can get along with.

I would recommend that you ask others in your field who have built an office or other acquaintances you may have if they know of an architect with experience in dental facilities. Those are weird birds (the dental offices not the dentists :)

Another good source for an architect would be the dental equipment supplier that you are working with will typically have experiences with multiple design professionals and can recommend those they have good experience with.

It''s kind of like when us architects are looking for a new dentist. Ask around and interview a few

In case you are wondering, yes I am an architect and the first building I ever designed and built was a dental office. But I can''t practice in your area.
Hope this helps a bit.
Good luck.


Re: hallway width for ADA requirements By  genebko

Posts: 0

4/1/2009 7:58:00 AM

Doc, I think you may have heard about a 60 inch width requirement somewhere. There is a provision that mentions the fact that there must be a passing ability within 200 ft in corridors and hallways. However, that generally isn''t an issue since there are rooms, cross corridors and cubbies where turns can happen.

The bigger issue is about the approaches to doors. Here it depends on whether the doors have closers or not. If I can assume that there are no closers on the doors and that the doors swing into the rooms, then the minimum corridor width is 42 inches assuming you can approach the doors from the side (along the wall) and push the door open. If there is a forward approach, then the are in front of the door must be clear for a depth of at least 48 inches.

rlm is right. If you haven''t contacted an architect yet, you should. These comments also do not address the approaches to doors from inside the rooms.

Oh, and welcome to the BB!


Re: hallway width for ADA requirements By  archf

Posts: 0

4/1/2009 8:47:00 AM

ICC/ANSI A117.1-2003 was adopted as part of the IBC 2006. Chapter 4 in the ICC/ANSI has several drawings for specifics..

In general, I keep 36" halls if there are no doors. 44" halls for larger spaces.

For wheelchair access, you need 42" halls if there are any doors, and 48" halls if any of the doors have closers.

For a hall that has a 90 degree turn, you need a 3'' hall to a 5'' hall or two 4'' halls.

At the end of the hall, if there is a door, you need between 4''-6" or 5'' of hall width.

If a door swings out to a hall you need 5'' of width.

Typically, if you have 5'' halls, you are safe.

4'' halls generally work, if you keep the doors from swinging into the hall and you can widen them at the ends.

I rarely go smaller than 4'' halls, as the places that you can use them drops.

I always use 36" wide doors for commercial.


Re: hallway width for ADA requirements By  kach22i

Posts: 0

4/1/2009 12:28:00 PM

No doors, 36" hall

Doors one side only, 42" hall

Doors both sides, 48"


Re: hallway width for ADA requirements By  rlmarch

Posts: 0

4/1/2009 9:04:00 PM

Hey folks!

What about IBC 2009 Edition Section 1017.2 ?
Seems like having something that complies with the Code minimums or larger is a good idea maybe?

Also, does the good Doctor know about Ambulatory Health Care? If he has a potential to use general anesthesia on more than 3 patients at a time, a lot of other issues that corridor width come into being. We don''t know if he is involved in oral & maxillo facial surgery.

So just on Corridor width, here is how it goes:

1017.2 Corridor width.
The minimum corridor width shall be as determined in Section 1005.1, but not less than 44 inches.

1. Twenty-four inches For access to and utilization of electrical, mechanical or plumbing systems or equipment.

2. Thirty-six inches With a required occupant capacity of less than 50.

3. Thirty-six inches Within a dwelling unit.

4. Seventy-two inches (1829 mm)?In Group E with a
corridor having a required capacity of 100 or more.

5. Seventy-two inches In corridors serving surgical Group I, health care centers for ambulatory patients receiving outpatient medical care, which causes the patient to be not capable of self-preservation.

6. Ninety-six inches In Group I-2 in areas where required for bed movement.

Now he can impress his architect with real knowledge! :)


Re: hallway width for ADA requirements By  genebko

Posts: 0

4/2/2009 6:53:00 AM

kach22i, still not finding where you get 48 inches required if there are doors on both sides. I like the summary way you noted things but you can still use 42 inches if you approach a door from the side (assuming the occupant load is under 50).


Re: hallway width for ADA requirements By  dna

Posts: 0

4/2/2009 7:19:00 AM

genebko has it. clearance requirements and hall widths per ansi 117.1 will depend on the approach to the doors.


Re: hallway width for ADA requirements By  kach22i

Posts: 0

4/2/2009 12:01:00 PM

Genebko, 48" is doors in series (across from each other) ANSI 404.2.6 (looking in my old 98 book)

In my experience you can''t avoid it, or the owner makes a change without telling you and mucks up the project and wants someone to blame other than themselves.

The Min''s I listed are for under 5,000 SF business, a most typical application.


Re: hallway width for ADA requirements By  jdrobysh

Posts: 0

4/2/2009 12:13:00 PM

kach22i -

Doors in series is not about doors on opposite sides of a corridor... it provides details for entry vestibule arrangements where one must pass through both doors going in or out of a facility.


Re: hallway width for ADA requirements By  kach22i

Posts: 0

4/2/2009 12:23:00 PM

jdrobysh, I don''t see anything about the requirement being applied only to entry vestibules although that may be where you see it often.


Re: hallway width for ADA requirements By  jdrobysh

Posts: 0

4/2/2009 12:30:00 PM

kach22i -

Are you reading the text or just looking at the graphics?

Think about it for a moment, just because I align two doors on opposite sides of a corridor I am required to widen the corridor? Makes no sense.

If anything, I should be able to make the corridor NARROWER because the wheelchair can avail itself of the second door.

The reason it exists is to provide adequate space in the vestibule, where you must clear one door in order to operate the second.

IN SERIES = one after another.


Re: hallway width for ADA requirements By  dna

Posts: 0

4/2/2009 12:32:00 PM

agree with jd, the term "in series" clarifies that this does not apply to doors opposite each other in a corridor.


Re: hallway width for ADA requirements By  miguele3

Posts: 0

4/2/2009 12:35:00 PM

There is more than code to consider however as 3'' corridors feel cramped and badly designed. a 5'' corridor just feels better and functions better.


Re: hallway width for ADA requirements By  jdrobysh

Posts: 0

4/2/2009 12:35:00 PM

kach22i - BTW, entry vestibules aren''t the ONLY location you find doors in series, but probably the most common.

dna - thanks ;)


29 post(s) First 1 2 > Last
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