1. Welcome to the new and improved Building Code Forum. We appreciate you being here and hope that you are getting the information that you need concerning all codes of the building trades. This is a free forum to the public due to the generosity of the Sawhorses, Corporate Supporters and Supporters who have upgraded their accounts. If you would like to have improved access to the forum please upgrade to Sawhorse by clicking here: Upgrades
    Dismiss Notice

Does lobby need to be fireproofed if egress stair leads to it?

Discussion in 'Commercial Fire Codes' started by gnarkill283, Jun 30, 2020.

  1. gnarkill283

    gnarkill283 Registered User

    Joined:
    Nov 15, 2017
    Messages:
    14
    Likes Received:
    0
    Like the title says, I have a egress stair's exit door opening into a lobby. Does that lobby need the same fire rated enclosure as the stair?
     
  2. steveray

    steveray Sawhorse

    Joined:
    Nov 25, 2009
    Messages:
    7,242
    Likes Received:
    1,094
    Look in 1028...

    1028.1 General. Exits shall discharge directly to the exterior
    of the building. The exit discharge shall be at grade or shall
    provide a direct path of egress travel to grade. The exit discharge
    shall not reenter a building. The combined use of
    Exceptions 1 and 2 shall not exceed 50 percent of the number
    and minimum width or required capacity of the required
    exits.
    Exceptions:
    1. Not more than 50 percent of the number and minimum
    width or required capacity of interior exit
    stairways and ramps is permitted to egress through
    areas on the level of discharge provided all of the
    following conditions are met:

    1.1. Discharge of interior exit stairways and
    ramps shall be provided with a free and
    unobstructed path of travel to an exterior
    exit door and such exit is readily visible
    and identifiable from the point of termination
    of the enclosure.
    1.2. The entire area of the level of exit discharge
    is separated from areas below by
     
  3. RLGA

    RLGA Sawhorse

    Joined:
    Oct 18, 2009
    Messages:
    2,137
    Likes Received:
    732
    I don't know what code edition you're under, but the 2018 IBC, Section 1028.1, Exception 1, allows up to 50% of the exit stairways and ramps to discharge at the level of exit discharge provided that all four of the conditions provided are met:
    1. Free and unobstructed path to an exterior exit that is readily visible.
    2. The entire level of exit discharge is separated from any floor levels below with a fire-resistance rating equal to the stair enclosure.
    3. The path from the stair to the exterior exit shall be sprinklered throughout. Areas of the level of exit discharge with access to the same path must either be sprinklered or separated from the path with fire barriers having a fire-resistance rating equal to the stair enclosure.
    4. Exit stairs and exit access stairs that serve the same level and discharge at the same level must be separated by a distance of 30 feet but not less than 1/4 of the overall diagonal of the building.
     
  4. cda

    cda Sawhorse

    Joined:
    Oct 19, 2009
    Messages:
    18,234
    Likes Received:
    1,294

    New or existing building ?
     
  5. gnarkill283

    gnarkill283 Registered User

    Joined:
    Nov 15, 2017
    Messages:
    14
    Likes Received:
    0
    New building. It is a ground floor lobby with no floors below and takes 50% of the occupants so therefore no fireproofing required in the lobby right?
     
  6. RLGA

    RLGA Sawhorse

    Joined:
    Oct 18, 2009
    Messages:
    2,137
    Likes Received:
    732
    Is the entire first story (level of exit discharge) sprinklered? If so, then no additional fire-resistive assemblies are required.
     
    cda likes this.
  7. cda

    cda Sawhorse

    Joined:
    Oct 19, 2009
    Messages:
    18,234
    Likes Received:
    1,294
    Ok I recognize 1028 now, been a few days

    I am good

    Just to many words to read
     
    #7 cda, Jun 30, 2020
    Last edited: Jun 30, 2020
  8. ADAguy

    ADAguy Registered User

    Joined:
    Sep 11, 2013
    Messages:
    4,713
    Likes Received:
    452
    Truth is in the verbiage (smiling)
     

Share This Page