ABSTRACT
Analytical models of a radio and television tower are developed using 3D3S and SAP2000 to evaluate the safety of the structure. The structural safety of the tower under the originally-designed load in 1970 is analyzed. Based on the structural strengthening code system in 2013, the safety of the structure in terms of 5-year or 50-year design life is analyzed. The analysis results show that the tower meets the safety requirement of the design codes in the 1970s and 5-year design life since 2013, but fails to meet the safety requirement of 50-year design life since 2013.
