Depends on type of location:
In soil where there is only pedestrian traffic--24"
Under 2' of concrete --18"
Under streets, driveways, parking lots--24"
Under residential driveways--18"
Depends on type of location:
In soil where there is only pedestrian traffic--24"
Under 2' of concrete --18"
Under streets, driveways, parking lots--24"
Under residential driveways--18"
