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hi guys, i just wanted to ask you about the dynamic behavior of long span steel structure roof, in fact am studying one with 110 m span , my problem is that am having always the 1st mode with Z direction with a 34% of mass participation ! could anyone give us an idea about this kind of...

ha ha ha , well thanks guys , i think i just fell from Mars , i took earthworks for earthquake he he he ! thanks for showing up

hi guys, i just wanted to ask you about the dynamic behavior of long span steel structure roof, in fact am studying one with 110 m span , my problem is that am having always the 1 mode with Z direction and a 34% of mass participation ! could anyone give us an idea about this kind of structures...

what about covadis, it's good in survey issues, and also mensura, it's a French made but very useful