-<i class="diffmod"><em class="diffmod">Corridors</i></em> shall be fire-resistance rated in accordance with Table 1020.1. The <i class="diffmod"><em class="diffmod">corridor</i></em> walls required to be fire-resistance rated shall comply with Section 708 for <i class="diffmod"><em class="diffmod">fire partitions</i></em>.<br / class="diffmod"><br /><ins class="diffins">In addition, corridors in buildings of Types IIB, IIIB, and VB construction and assigned Risk Categories III and IV in Table 1604.5, other than Group I, shall have a fire resistance rating of not less than 1 hour where such buildings are any of the following:</ins><br / class="diffmod"><br /><ol><li><ins class="diffins">Assigned a Seismic Design Category C or D in Table 1613.3.5(1).</ins></li><ins class="diffins"> </ins><li class="diffmod"><ins class="diffins">Located in a flood hazard area established in accordance with Section 1612.3.</ins></li><ins class="diffins"> </ins><li class="diffmod"><ins class="diffins">Located in a </ins><em class="diffmod"><ins class="diffins">hurricane-prone regions</ins></em><ins class="diffins">.</ins></li><ins class="diffins"> </ins></ol><ul class="exception" class="diff-list"><li class="normal"><b class="diffmod"><strong class="diffmod">Exceptions:</b></strong><ol class="diff-list"><li class="normal">A <i class="diffmod"><em class="diffmod">fire-resistance rating</i></em> is not required for <i class="diffmod"><em class="diffmod">corridors</i></em> in an occupancy in Group E where each room that is used for instruction has not less than one door opening directly to the exterior and rooms for assembly purposes have not less than one-half of the required <i class="diffmod"><em class="diffmod">means of egress</i></em> doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.</li><li class="normal">A <i class="diffmod"><em class="diffmod">fire-resistance rating</i></em> is not required for <i class="diffmod"><em class="diffmod">corridors</i></em> contained within a <i class="diffmod"><em class="diffmod">dwelling unit</i></em> or <i class="diffmod"><em class="diffmod">sleeping unit</i></em> in an occupancy in Groups I-1 and R.</li><li class="normal">A <i class="diffmod"><em class="diffmod">fire-resistance rating</i></em> is not required for <i class="diffmod"><em class="diffmod">corridors</i></em> in <i class="diffmod"><em class="diffmod">open parking garages</i></em>.</li><li class="normal">A <i class="diffmod"><em class="diffmod">fire-resistance rating</i></em> is not required for <i class="diffmod"><em class="diffmod">corridors</i></em> in an occupancy in Group B that is a space requiring only a single <i class="diffmod"><em class="diffmod">means of egress</i></em> complying with Section 1006.2.</li><li class="normal"><i class="diffmod"><em class="diffmod">Corridors</i></em> adjacent to the <i class="diffmod"><em class="diffmod">exterior walls</i></em> of buildings shall be permitted to have unprotected openings on unrated <i class="diffmod"><em class="diffmod">exterior walls</i></em> where unrated walls are permitted by Table 602 and unprotected openings are permitted by Table 705.8.</li></ol></li></ul>
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