Assalam o alaikum all, How to decide what type of support should i provide at base of my building in ETABS?? If I provide pin support then sway of my building is 1.5 in and if i provide fix support then sway reduces to 0.9 in. Some one in this forum replied to a thread (I am unable to find the same thread) that if soil is stiff then we can provide fix support other wise pin support for loose soil. But I think it is upto our will then whether we provide fixed or hinged, sizes of our footings