Most concrete failures are base failures. The pour gets blamed because the pour is what you can see.
We strip organics, bring in the right base material rather than whatever is closest, and compact in lifts instead of one deep pass that only firms up the top few inches. Where a test is warranted we will say so.
Grading takes water away from the building. Getting that right at the start is cheaper than every other way of dealing with water later.
Base
3/4 minus, placed and compacted in lifts
Compaction
In lifts, tested where the job warrants it
Grading
Positive drainage away from the structure
Organics
Stripped out. Never buried under a slab.
Where we do this work
Excavation & Site Prep across the whole valley. If you are in one of these, Heath will come and look at it.