8A. ANALYSIS Part 1: NEW BUILDINGS

CHAPTER 8A 'ANALYSIS' 57 set the "Seismic Load Factor e" used for the design of the building, for the calculation of the Horizontal Design Acceleration a*/g according to Table 3 or 2 respectively (they are the same with differential numbering) and select the command In buildings designed and/or constructed before 26/02/1959 as well as in buildings without a building permit, either partially or in their entirety, the seismic load factor e will be considered as the factor that should have been taken into account according to the Seismic Regulation of 1959, depending on the seismicity of the area (I, II, III) and the risk of the ground (a, b, c). In case of application of non-linear methods of analysis, as provided for in the C.E.P.E., a horizontal elastic acceleration spectrum Se (T) shall be used, which shall be derived from the above-mentioned horizontal design spectrum Sd (T) (Figure 2 and Table 3) by setting k= to 1.0 and multiplying the values of the squares of the Sd (T) spectrum by a factor of 1.50 for buildings of the period ...< 1985 and by a factor of 2.00 for buildings of the period 1985 < ... < 1995, respectively. For this reason, if non-linear analysis methods are applied, check the checkbox on pre-1985 buildings.