EXAMPLE 2. FORMAL STUDY METAL CONSTRUCTION

EXAMPLE 2: 'DESIGN OF A METAL STRUCTURE' 41 In the Building Properties field: Where in previous versions there was the Building Type by X and Z field for the calculation of the basic eigenperiod, it has been replaced by the module: There is now a choice of three ways to calculate the eigenperiod everywhere. The first two are the approximate methods of EC8-1. 1. In the first is necessary: select, per direction, the type of building on the right (in the case of X and/or Z where the structure consists of a single frame, the the corresponding checkbox in the "Openings" box ) 2. The second approximate method , is sufficient to be selected and does not require any additional action. 3. The third possibility is to calculate the eigenpipes by Idiomorphic Analysis. The program takes as the building's eigenvector per direction the eigenvector corresponding to the dominant eigenmode (the eigenmode with the highest percentage of activated mass). The user can increase or decrease the number of Idiosyncrasies, in case of dynamic analysis, and Static, in case the user chooses to calculate the eigenvalues from Idiomorphic Analysis, and the accuracy rate.