Chapter 17.145 COMMUNICATION TOWERS AND OTHER TALL STRUCTURES This chapter is included in your selections. Sections: 17.145.010 Height limitations. 17.145.020 Airport height limitations. 17.145.030 Commercial use of communications towers. 17.145.040 Exemptions. 17.145.050 Communications towers as conditional uses. 17.145.060 Application requirements. 17.145.070 Approval process and criteria.