SEC. 91.3108. TELECOMMUNICATIONS AND BROADCAST TOWERS.
(Added by Ord. No. 183,580, Eff. 7/11/15.)
Section 3108 of the CBC is adopted by reference, except Section 3108.1 of the CBC is not adopted; and, in lieu, LAMC Subsection 91.3108.1 is added. (Amended by Ord. No. 185,587, Eff. 7/16/18.)
91.3108.1. General. (Readopted by Ord. No. 188,797, Eff. 12/31/25.) Towers shall be designed and constructed in accordance with the provisions of TIA-222. For structural design purposes, telecommunication towers shall be considered to be a "Class III Structure" subject to an Importance Factor of 1.50, as set forth in Table 2-3, Importance Factors, of TIA-222. Towers shall be designed for seismic loads; exceptions related to seismic design listed in Section 2.7.3 of TIA-222 shall not apply. In Section 2.6.6.2 of TIA 222, the horizontal extent of Topographic Category 2, escarpments, shall be 16 times the height of the escarpment.
EXCEPTION: Single free-standing poles used to support antennas not greater than 75 feet (22.86 m), measured from the top of the pole to grade, shall not be required to be noncombustible.