Usually in earthquake engineering design using a lnear modal spectrum analysis Eurocode 8 (Italian code too) applies a reduction of 30 %. It is a reduction taking into account a level of cracking that can appear at the beginning of the earthquake event.
Usually in earthquake engineering design using a lnear modal spectrum analysis Eurocode 8 (Italian code too) applies a reduction of 30 %. It is a reduction taking into account a level of cracking that can appear at the beginning of the earthquake event.