Multi-fit Design

Select Multi-fit to create an optimized non-linear surface whose slopes stay between the minimum and maximum you enter. Multi-fit balances dirt down the field in your specified direction, within strips. This suits working within rows while moving minimal dirt.
By allowing slopes to vary within set tolerances, a Multi-Fit design can greatly reduce the amount of dirt moved.
Dividing the field into regions can reduce dirt movement further. To generate a Multi-fit plane, enter the details in the panel shown below and fill in all fields.
NOTE: Leaving either min% or max% blank will produce undesirable design results.
Set slope range
Find the average slope percentage with the iGrade™ Plane Calculator. Alternatively, in T3RRA Cutta, create a plane of best fit in a direction, then check the primary and cross slopes in the plane statistics window. If in doubt, consult an irrigation engineer.
Perform cross-strip optimization
This option attempts to tilt the strip sections to match the actual side slope. Use it in fields with high side slopes (>2% slope); it is unlikely to benefit relatively flat fields. It is enabled by default.
Perform preliminary side slope adjustment
This option makes an initial side slope adjustment, attempting to keep the side slope no greater than the minimum row slope. Use it if water might tend to run across rows rather than down them.
Material and cut settings
You can set Cut/fill ratio, Max cut depth and Import in two locations: the Project tab of settings (see section B), where you set defaults for new projects, or the lower-left corner of the Multi-Fit (and Best-Fit) page.
The Cut/fill ratio depends on the material being moved and the percentage that will “settle” or “shrink” after compaction.
Enter the maximum permitted cut depth in Max cut depth. If any points on the map exceed this depth, the warning shown below appears. Adjustments may be required.
Use Import to bring dirt in from a stockpile or export dirt from the field to another area. Enter a negative value for exporting.