Crushed columns that have surpassed the stage of buckling are presented with images here. Lack of steel reinforcement is only one reason out of several other design related reasons which can lead to both column buckling and crushing. And also, the luck of knowledge or luck of finance can be very good reason why this happened. The rezults are bad, and if the collapse of the building additionally happened than there is no justifying!
The gallery bellow will show you several different column designs resulting with this problem. Very, very bad!