RLGA
SAWHORSE
Close, when they only have one exit from a story.camksu said:Ah ha! I think I may understand now. So Group R-2 are only required to have EERO if they only have one exit for the building? Is that correct?
For further explanation, the 2009 IBC required all Group R occupancies to have EEROs, but if a building was sprinklered per NFPA 13 or 13R, the EEROs were not required (except for Group R-3). Therefore, since Section 903.2.8 required sprinklers in all Group R occupancies, then most Group R occupancies were exempt from the EEROs (Group R-3 and Group R occupancies using NFPA 13D still required the EEROs). However, if a building wanted stories with a single exit, then Table 1021.2 required that 3-story Group R-2s must have EEROs, even if they are sprinklered. So, in essence, the requirements of the 2012 IBC are just another way of restating what was required in the 2009 IBC.
In actuality, the 2012 IBC is more restrictive than the 2009 IBC, since Table 1021.2(1) of the 2012 IBC requires that the basement, first story and second story--in addition to the third story--have the EEROs. Table 1021.2 of the 2009 IBC, per Footnote 'c,' only required the EEROs when a building had a third story with a single exit--basements, first stories, and second stories, when the building did not have a third story, were not required to have the EEROs (Footnote 'c' is not indicated with the Group R or R-2 occupancies in the rows for those stories).
Last edited by a moderator: