3” air dielectric 53 4” air dielectric 66 5” air dielectric 91 Rigid Transmission Line copper – Line Diameter: 3 1/8” 75 96 – 4 1/16” 95 130 – 6 1/8” 150 185 – 7 3/16” 263 8 3/16” 270 327 – Broadband rigid transmission line sections are generally 15% more expensive than other rigid line Note: sections. TOWER EQUIPMENT AND RIGGING If replacement or addition of antennas is required, it may be necessary to modify the existing tower or construct a new tower. In addition to these expenses, a broadcaster replacing or adding an antenna would incur rigging costs. Range of Estimated Costs Existing Towers Towers without sufficient documentation of the specifications may need to be – mapped prior to completion of a tower load study. Tower mapping for an undocumented/poorly documented tower and preparation of documentation 12,000 16,000 – necessary for tower load study Structural engineering tower load study for documented tower 5,000 7,000 – Structural engineering tower load study for a documented tower with candelabra 10,000 Minor tower reinforcement/modifications (see 100,000 150,000 Fig. 2 for sample minor modifications) – Major tower reinforcement/modifications (see 300,000 400,000 Fig. 2 for sample major modifications) – Serious reinforcement/modifications (see 500,000 1,000,000 Fig. 2 for sample serious modifications) –
3” air dielectric 53 4” air dielectric 66 5” air dielectric 91 Rigid Transmission Line – copper Line Diameter: 3 1/8” 75 – 96 4 1/16” 95 – 130 6 1/8” 150 – 185 7 3/16” 263 8 3/16” 270 – 327 Note: Broadband rigid transmission line sections are generally 15% more expensive than other rigid line sections. TOWER EQUIPMENT AND RIGGING If replacement or addition of antennas is required, it may be necessary to modify the existing tower or construct a new tower. In addition to these expenses, a broadcaster replacing or adding an antenna would incur rigging costs. Range of Estimated Costs Existing Towers – Towers without sufficient documentation of the specifications may need to be mapped prior to completion of a tower load study. Tower mapping for an undocumented/poorly documented tower and preparation of documentation necessary for tower load study 12,000 – 16,000 Structural engineering tower load study for documented tower 5,000 – 7,000 Structural engineering tower load study for a documented tower with candelabra 10,000 Minor tower reinforcement/modifications (see Fig. 2 for sample minor modifications) 100,000 – 150,000 Major tower reinforcement/modifications (see Fig. 2 for sample major modifications) 300,000 – 400,000 Serious reinforcement/modifications (see Fig. 2 for sample serious modifications) 500,000 – 1,000,000
DA-14-389A2.docx