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getting separated...

mike-d

Registered User
Joined
Dec 17, 2018
Messages
28
Location
California
Hello All,
I'm proposing to have an entire floor of open office (group b) occupancy, with a somewhat small portion of dining assembly (group A2 of 200 occupants) with 2 exits directly onto accessible public egress. the building is fully sprinklered (automatically) - do you think i should prepare to have a fire/smoke barrier strategy ready to go for the possible separation of the Dining Room and the Servery, Open Office? please take a look at the sketch in the attached PDF for better clarity.

thank you, and happy Friday.
-md
 

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not into separation to much,

But is the office/ all shown part of one business?? If so may be accessory??

Plus construction type may allow mixed use??
 
Thanks cda! so, type IIB construction, all 1 tenant (part of one business)...accessory? interesting...
 
Hello All,
I'm proposing to have an entire floor of open office (group b) occupancy, with a somewhat small portion of dining assembly (group A2 of 200 occupants) with 2 exits directly onto accessible public egress. the building is fully sprinklered (automatically) - do you think i should prepare to have a fire/smoke barrier strategy ready to go for the possible separation of the Dining Room and the Servery, Open Office? please take a look at the sketch in the attached PDF for better clarity.

thank you, and happy Friday.
-md



So one other question

Is there more sq ft to the drawing??

If so what is that area used for
 
Sprinklered IIB building, mixed use non-sep should work....

If non-separated the entire building would need to be with in the height and area limitations of an A2 occupancy. Hard to know how large the building is based on the sketch provided as it looked like a partial plan.

How big is the largest floor plate of the building? An A2 occupancy, type 2B construction with the sprinkler area increase allows for up to a 28,500SF floor plate, and then you can get a little more with the frontage increase.
 
Or shoot for accessory...

508.2 Accessory occupancies. Accessory occupancies are
those occupancies that are ancillary to the main occupancy of
the building or portion thereof. Accessory occupancies shall
comply with the provisions of Sections 508.2.1 through
508.2.4.
508.2.1 Occupancy classification. Accessory occupancies
shall be individually classified in accordance with
Section 302.1. The requirements of this code shall apply to
each portion of the building based on the occupancy classification
of that space.
508.2.2 Allowable building height. The allowable height
and number of stories of the building containing accessory
occupancies shall be in accordance with Section 504 for
the main occupancy of the building.
508.2.3 Allowable building area. The allowable area of
the building shall be based on the applicable provisions of
Section 506 for the main occupancy of the building.
Aggregate accessory occupancies shall not occupy more
than 10 percent of the floor area of the story in which they
are located and shall not exceed the tabular values for nonsprinklered
buildings in Table 506.2 for each such accessory
occupancy.
508.2.4 Separation of occupancies. No separation is
required between accessory occupancies and the main
occupancy.
 
thanks for the replies!
- all 3 levels are classified as group-b occ.
- largest floor plate area weighs-in about 35k.
- building is using an fully-auto sprink system
- only 1, maybe 2 legit A2 occupancy
- single tenant entire building.
- building height comes in about 48' from grade.
 
thanks for the replies!
- all 3 levels are classified as group-b occ.
- largest floor plate area weighs-in about 35k.
- building is using an fully-auto sprink system
- only 1, maybe 2 legit A2 occupancy
- single tenant entire building.
- building height comes in about 48' from grade.




So one other question

Is there more sq ft to the drawing??

How many

If so what is that area used for
 
cda, yes, the floor total area for that level is about 31k of Business occupancy, with only 2 'A' areas (large conf room and dining room). it's a TI for a tech company. they like large open office space, little to no suspended ceilings, exposed MEP systems, etc. think 'high tech'...
 
Ok so the area is under one businesses control

Hummmm wonder if that changes the answers
 
Thanks cda; i'm leaning towards what you mentioned earlier (accessory) and what steveray pointed out - section 508.2.4
 
Also thinking

Have only seen won dor used for something like this

Plus over 750 sq ft you still need two seperate exits

Just a few design details to take care of
 
The solution

Think outside the cardboard box

Call it open office concept area

Part of the rest of the office

Just has some think tables, where people wonder in and out of as needed !!!


Boom done
 
Thanks cda - that sounds like it could be a viable, if creative, solution...
i'm familiar with wondoor i've used them once or twice in the past. there's another mfg called McKeon - http://www.mckeondoor.com
..have you, or anyone else here, ever used them before?
 
oh, forgot this...

From that drawing you need to separate the stair from the EP....Again, I don't really agree, but it does minimize some risk....

1023.3.1 Extension. Where interior exit stairways and
ramps are extended to an exit discharge or a public way by
an exit passageway, the interior exit stairway and ramp
shall be separated from the exit passageway by a fire barrier

constructed in accordance with Section 707 or a horizontal
assembly constructed in accordance with Section
711, or both. The fire-resistance rating shall be not less
 
From that drawing you need to separate the stair from the EP....Again, I don't really agree, but it does minimize some risk....

1023.3.1 Extension. Where interior exit stairways and
ramps are extended to an exit discharge or a public way by
an exit passageway, the interior exit stairway and ramp
shall be separated from the exit passageway by a fire barrier

constructed in accordance with Section 707 or a horizontal
assembly constructed in accordance with Section
711, or both. The fire-resistance rating shall be not less


Not sure if I like a auto shutter at a stairwell??? And is it even allowed??


A guess a question is this a new building or remodel???
 
Not sure if I like a auto shutter at a stairwell??? And is it even allowed??


A guess a question is this a new building or remodel???

If they are not egressing through that hole, I wouldn't have a huge issue with it I don't think, but it would definitely get a close look.
 
thanks again for your comments;
- this is an existing 3 level building, type IIB, fully sprinklered - automatically.
- the stair is existing. the fire-shutter is planned to be used to seal-up the stair egress path, which is planned to be used for L2, L3 partial egress per 1023.3.1.
 
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