Dissolve with statistic field sum returns unexpected result

Discussion created by mpeterson79 on Feb 23, 2012
Latest reply on Aug 26, 2019 by dlee-esristaff
I have a bunch of building footprints that I'm trying to calculate actual area of each individual building. The 'actual area' is calculated by multiplying the shape area by the number of floors.

When I dissolve the footprints into simplified shapes, I'd like to aggregate the actual area of the building footprints into the new footprint. I'm using the SUM calculation on the the statistic field of the actual area, but it's returning the area of all the buildings in the dataset, not just the single building's actual area.

For example, a two-story house with a single story addition. The two story shape area is 1000sq ft. The single story addition area is 500sq ft. I am looking for an 'actual area' value of 2,500sq ft (2 floors of 1,000sq ft, and 1 floor of 500sq ft), but ArcMap is returning the area of ALL the building polygons in the dataset, and attaching that to each individual polygon.

Can someone help me out here?