Will balistas work alone?

[cadianzz]

As there is no simulator for balista on buildings, just want to ask if I send 3 waves of balistas each with 500 balistas only to attack someone's resources. Will they do any damage?

[Blitzcraig]

To get maximum use of ballistas. Make sure there are no troops in the city and the walls are down. Btw it takes 1600 ballistas to take a building from lvl30 to zero.

[Tooltip]

The simulator should work for balistas on buildings