Interior Exit Stairs - Door leading to trash room from stair?

[nealderidder]

I've got a 4 story mixed-use building in CA, it's pretty small, 11 units per floor on 2-4. I've got an occupant load on floors 2-4 of 38 occupants per floor.

In my exit stair, at the 1FL, I'd like to have access to my trash room. But I'm guessing I'm going to hear:

CBC1023.1...shall not be used for any purpose other than as a means of egress and a circulation path.

and

CBC1023.4...Openings other then unprotected exterior openings shall be limited to those necessary for exit access to the enclosure from normally occupied spaces and egress from the enclosure.

This is one of two required exits.

Would you say "no way" to option A for the reasons I mentioned above?

Would it be any better if I could make a vestibule for the door leaving the stairway, like in B?
I would still have rated exit enclosure above that little vestibule...

What do you think?

 

[RLGA]

Option A, no way. Option B is acceptable, but you need to provide the required clear spaces at the doors.

 

[nealderidder]

Option A, no way. Option B is acceptable, but you need to provide the required clear spaces at the doors.

Yeah, the door clearances are going to force me to expand quite a bit... Thanks for the quick response Ron.

 

[sergoodo]

Accessibility may be an issue where access is not within the property. Tenants carrying garbage downstairs or chutes and service access?

 

[Mr. Inspector]

Don't know about CA but the IBC has this:

1107.3 Accessible spaces. Rooms and spaces available to the
general public or available for use by residents and serving
Accessible units, Type A units or Type B units shall be accessible.
Accessible spaces shall include toilet and bathing
rooms, kitchen, living and dining areas and any exterior
spaces, including patios, terraces and balconies.
Exceptions:
1. Stories and mezzanines exempted by Section
1107.4.
2. Recreational facilities in accordance with Section
1110.2.
3. Exterior decks, patios or balconies that are part of
Type B units and have impervious surfaces, and that
are not more than 4 inches (102 mm) below the finished
floor level of the adjacent interior space of the
unit.

 

[ADAguy]

Yeah, the door clearances are going to force me to expand quite a bit... Thanks for the quick response Ron.

for B the door should be on the exterior wall, not from the vestibule; FLS may have an issue.

 

[steveray]

Just remember with B that everything that supports the exit gets rated same as the exit so there will be some transitions with the "vestibule" framing

 

[nealderidder]

Just remember with B that everything that supports the exit gets rated same as the exit so there will be some transitions with the "vestibule" framing

Yeah, I know with the overhead landing the detailing is getting fussy.

Thanks for the input.

 

[nealderidder]

for B the door should be on the exterior wall, not from the vestibule; FLS may have an issue.

Are you thinking I'll get shot down because I'm reducing the protection established by the enclosed stair - since I don't quite make that last 5' to the exterior face of the building? So close, yet so far.

 

[steveray]

I do not believe there is any code section that does not allow a discharge door to be "recessed" if that is the debate....Those exterior walls would have to be rated per 1023.7 2015 IBC, but allowable unless there is something different in Cali...

 

[ADAguy]

No it is not, the concern is a fire originating in the trash room and possibly compromising the stair alcove with smoke.