I see one photo in the link number 3 that the vertical columns are ok.. it is failed only at top and bottom of column..
it means the capacity of these columns are ok..
and some saying there was cracks ...but as the faliure of columns are sudden failures ...
SO I expect two senarios for this collapse ..
Senario No 1 : the week points between Flat Slabs and columns ... specially in the right side of building as I can see in the photo the most of collapse in this side
Senario No 2 : the weak points in the columns at the first floor of building , I mean the columns at first floors reached to max capacity and overstressed+ Senario 1... so propagation of collapse start from columns ...
But I expect 90% Senario 1...
It is badly to do not have enough photos to understand what happend..
Condelense to all victims
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it means the capacity of these columns are ok..
and some saying there was cracks ...but as the faliure of columns are sudden failures ...
SO I expect two senarios for this collapse ..
Senario No 1 : the week points between Flat Slabs and columns ... specially in the right side of building as I can see in the photo the most of collapse in this side
Senario No 2 : the weak points in the columns at the first floor of building , I mean the columns at first floors reached to max capacity and overstressed+ Senario 1... so propagation of collapse start from columns ...
But I expect 90% Senario 1...
It is badly to do not have enough photos to understand what happend..
Condelense to all victims