aggradations in a sentence

1. The amount of newly constructed buildings around 1175 thus surpassing the number expected by natural population growth, presumably also because the aggradations were used to substitute wooden constructions with stone ones.
2. Those aggradations made the ground floor of a lot of houses impassable from the street, so that they were either raised or simply had front doors built at the level of their upper floors-which were then at street level.
3. It's difficult to find aggradations in a sentence.