The Structural Engineer > Archive > Volume 50 (1972) > Issues > Issue 3 > Synopsis An Approximate Formula to Calculate the Fundamental Period of Vibration of Structural Frame
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Synopsis An Approximate Formula to Calculate the Fundamental Period of Vibration of Structural Frames by Ersin Arioglu

In the behaviour of structures under earthquake, the most effective role is played by the fundamental period of vibration of structures because it is one of the main parameters to determine the earthquake forces applied to the structure and it specifies the dynamic stability of the structure. In this paper'a simple approximate formula is proposed to calculate the fundamental period of vibration. The calculation with this formula is very short and easy. No mathematical background is necessary to apply the formula. In addition to the derivation and discussion of the formula, several examples showing its application are given.