Posted 11/16/2025 20:34 (#11437103 - in reply to #11436623) Subject: RE: Least amount of cover on 4,6 in tile
South Central Illinois
Seems like,
The tile spacing has some influence on depth.
Drainage is in the form of a V.
The soil type has some influence on depth.
Some soil has a different V formation.
30” deep is typically a starting point.
Least amount of cover on 4,6 in tile
