load combination is just a array of loads cases in your structure that serves to calculate forces, stresses and deflection but you don't have to assign load combination to the structure, you just have to assign loads (DEAD, LIVE, EARTHQUAQUE, ETC) and the load combination are independent from...
no! merge points just wants for any piont near from other point less than your tolerance and it convert into just one point, bt in your case i preffer erase and create new sub-elements F4 F413 F414 ... i think is more easy
bye
you must see your design code, for example one of the ACI318-99 load combination is 1,4D + 1,7L
then to define this load case you must ADD new combo... then select DEAD Static Load and select as Scale Factor 1,4 then press ADD Button, then select LIVE Static Load and select as scale factor 1,7...
i think you should run "merge points" comand and "check Model" in analyze menu the first comand will find any joint and join into one when they are nearest (less than the tolerance) the second comand will find any irregularity from your structure like overlaping areas or lines and it will select...
si plopez, estoy considerando cargas sismicas obtenidas con CQC mas cargas estaticas es cierto que se deforma con ellas y tienes razon, verifique las deformaciones por modo y luego aplico la proporcion con la masa modal de cada uno de los modos.
gracias
thanks everybody
thanks, but i don´t understand well, if i look the modal displacement (each one the different modes) the structure shows the displacement of the joint taking into account the diaphragm rigid condition... all of these movements are represent as the result of the spectrum analysis for each...
hi:
i'm modeling a 30 floor building in viña del mar (chile), i assigned membrane as a floor section, i have used a spectrum function as require NCh433of96 chilean seismic code. my problem is that i've assigned rigid diaphragm in all floors then i run the program an when y look joint...
