Civil Engineering/cyclic load?

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Question
Dear Esmailzade
What is the Cyclic load ? can we say that the wind load in tall building is cyclic loading?
regards
behzad.

Answer
Dear Behzad

Cyclic load is a repeating load with nearly equal return periods. The  return period must be small compared to the first natural period of vivration of the structure. Every loading can be modelled as a composition of series of cyclic loadings as per fourier series theory or even fourier transform. For the wind I can say that it is a dynamic loading with a cyclic nature but the cyclic nature of the wind loading must be treated as a composition of a range of cyclic loadings. For simplicity and for testing purpose it can be regarded as cyclic according to the dominant period of blowing or winding.

Regards
BEH

Civil Engineering

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Babak Esmailzadeh Hakimi

Expertise

I can answer questions in Structural Engineering, Earthquake Engineering, Project Management and Project Control topics!

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I am experienced in the area of earthquake engineering in electrical power industry, i.e. Lifeline Earthquake Engineering. My focus has been on structural seismic design of power installations. Recently I have got involved in project management in the category of constructional engineering.

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Sinam Consulting Engineers Co.

Education/Credentials
Bs degree in Civil Engineering from Ferdowsi University ,1988, Mashhad Iran, Ms degree in Earthquake Engineering, Sharif University of Technology, 1993, Tehran, Iran

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