What Rancho Cordova ground means for concrete driveways
Former dredge-mined ground in areas, with variable fill and cobble that can surprise an excavation.
Driveways near the American and Sacramento river corridors sit on sandy alluvium that drains well and compacts predictably. Move east toward Rancho Cordova, south to Elk Grove or north to Antelope and expansive clay takes over. The same slab detail is not appropriate in both places, which is why we look at the ground before quoting a section rather than after.
- Older dredge tailings ground can contain large cobble that changes excavation and compaction approach.
- Mid-century driveways here are frequently at end of life and being replaced outright.
- Commercial corridors generate parking lot, dock apron and ADA path-of-travel work.
- Newer east-side subdivisions are clay-dominant and follow valley clay practice.
