You both would have got class "p" classification for your sites I'm guessing
and if so what did the engineer recommend for you footings
good to follow your progress
Have a P site with e-d soil (yippppeee).
They have recommended 900 deep piers with 92 mesh 100 thick slab
The saving grace hopefully is there is no fill.
Are you having soil issues insider?
No just do the drilling for soil testing companies and cracked house investigations