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getting separated...

Discussion in 'Commercial Building Codes' started by mike-d, Jan 11, 2019.

  1. mike-d

    mike-d Sawhorse

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    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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  2. cda

    cda Sawhorse

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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??
     
  3. mike-d

    mike-d Sawhorse

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    Thanks cda! so, type IIB construction, all 1 tenant (part of one business)...accessory? interesting...
     
  4. cda

    cda Sawhorse

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  5. TheCommish

    TheCommish Sawhorse

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  6. cda

    cda Sawhorse

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    So one other question

    Is there more sq ft to the drawing??

    If so what is that area used for
     
  7. steveray

    steveray Sawhorse

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    Sprinklered IIB building, mixed use non-sep should work....
     
  8. Tim Mailloux

    Tim Mailloux Registered User

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    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.
     
  9. steveray

    steveray Sawhorse

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    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.
     
  10. mike-d

    mike-d Sawhorse

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    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.
     
  11. cda

    cda Sawhorse

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    So one other question

    Is there more sq ft to the drawing??

    How many

    If so what is that area used for
     
  12. mike-d

    mike-d Sawhorse

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    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'...
     
  13. cda

    cda Sawhorse

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    Ok so the area is under one businesses control

    Hummmm wonder if that changes the answers
     
  14. cda

    cda Sawhorse

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    Have you looked at mixed use

    And non seperated provisions yet
     
  15. mike-d

    mike-d Sawhorse

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    Thanks cda; i'm leaning towards what you mentioned earlier (accessory) and what steveray pointed out - section 508.2.4
     
  16. cda

    cda Sawhorse

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    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
     
  17. cda

    cda Sawhorse

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    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
     
  18. mike-d

    mike-d Sawhorse

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    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?
     
  19. mike-d

    mike-d Sawhorse

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    oh, forgot this...
     

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  20. cda

    cda Sawhorse

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    Just on web site
    Not installed
     

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