This is a 2 storey historic building inn Calgary’s beltline.  It has a full basement plus a small 2 storey addition without the basement.  We were brought in to investigate the reasons for the sloping second floor.  It had, in one corner, settled/sunk approximately 10-12” below its original elevation.  The floor structure over the main centre beam remained in place. From our investigation it was determined that the foundations under the main floor, responsible for the second floor and roof, had settled due to the 2013 flooding that had taken place in the area.  It was interesting that the settling foundations didn’t affect the main floor as it has foundations separation from the second floor.