Evaluation on calculation methods and structural design by cold formed steel profiles in industrial buildings

In the present study submitted as a master science Thesis, it is anticipated that in mid-term, the utilization of light-gauge steel structures in industry will be in great demand along with being defined in seismic design code and establishing a calculation method based on cold-formed steel sections.By the present study, A new approach to the structural design methods is being mooted by means of rapidly- growing 3D structural design&modeling softwares. In Part I, the history, production technology and section properties of cold-formed steel profiles are discussed. In Part II, storey heights in light-gauge steel buildings with reference to seismic design code are analyzed and designated. In Part III, A calculation method is designated with respect to TS EN 1991-1-3 (snow load effects on structures) and TS EN 1991-1-4 (wind load effects on structures) instead of TS 498 and the application of the mentioned load types in structural design are analyzed in details.Furthermore, the load combinations in structural design,which are in AISI-LRFD, AISI-ASD and the draft seismic code, are indicated. In Part IV, a templated design of a LW structure is performed.Furthermore, the draft seismic code including the design principles of LW structures is referred in it instead of DBYBHY-2007 and a complete seismic load calculation is presented.Through the calculation, equivalent seismic load is utilized and described in details. In Part V, The light-gauge steel column under bending and compression is designed structurally in accordancce with AISI standards, re-examined by means of procedures compiled in MS Excell.The results are compared with those which are of CFS (cold-formed steel) software.In this Part, LRFD and ASD methods are examined respectively. In Part VI, The structural system with same geometrical and structural characteristics is examined incase that heavy steel sections are utilized respectively.Through calculations in it, the draft seismic code is referred.The weight of the system incase of heavy steel design is assessed. In the last part, the design principles of light-gauge steel structures in draft seismic code are mentioned.The differing parts with respect to DBYBHY-2007 are revealed and discussed.Load combinations which should be preferred in light-gauge structural design are examined.The heavy steel and light-gauge steel systems are compared economically by practicing respectively in a same model.