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Owners of towers should perform initial and periodic tower inspections and maintenance to assure regulatory compliance and to extend the service life of the structure and its appurtenances. Many insurance carriers require periodic inspections so that they have documentary evidence of maintenance.
It is recommended that major inspections be performed:
A.) After every severe wind and/or ice storm or any other extreme conditions.
B.) One-year maximum interval for Class III structures. Refer to Table 2-1 of TIA/EIA RS 222-G for a definition of each class. Most guyed broadcast towers will be Class III.
C.) At the completion of any major installation/maintenance performed on the tower. Have the work inspected to insure the installation was performed in accordance with the design. Also, damage to tower members can occur from the rigging required for installation. The most common damages are bent members due to improper rigging connections to the tower and burning grooves in tower members due to the load line being too close to the tower face.
D.) Use the maintenance and condition assessment guidelines from Annex J of TIA/EIA RS 222-G. Include an inventory of existing equipment with the inspection.
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