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379 total results found

Shift Surface

T3RRA Design Plus Manual Surface Tools

The function of this tool is to horizontally offset whole surfaces. This can be done in whole pixel increments only. It is, however, advisable to avoid the need for this tool by chasing up the correct projection when importing, or to use markers to properly ze...

Change pixel size for all surfaces

T3RRA Design Plus Manual Surface Tools

The function of this tool is to change the size of the pixels across all surfaces. The pixel sizes are read in meters, for example if the pixel size is set to 2 then each square dot on the screen is equal to 2 square meters in the real world. The sizes availab...

Smooth Region Boundary

T3RRA Design Plus Manual Surface Tools

‘Smooth Region Boundaries’ is used to smooth the transition between different regions in a design.The top slider is the ‘Max Allowable slope’. It sets the steepest allowable slope in the transition around the region lines.The bottom slider is ‘Distance From Re...

Create a cut/fill overlay

T3RRA Design Plus Manual Surface Tools

‘Create a cut/fill surface’ creates a surface layer that shows how much soil must be moved to and from areas to reach the design surface. To create a cut/fill map start by selecting a design surface and dragging it into the left side box, and drag an original ...

Show design surface balance figures

T3RRA Design Plus Manual Surface Tools

This tool provides a separate output of the information that is available in other tools, this tool is limited to only design surfaces. This information displayed can be limited to the boundary, a single region or a group of regions.

Layer Menu

T3RRA Design Plus Manual Surface Tools

Open overlay images -  this allows layers (such as yields, or imagery etc) to be draped over the elevation layers. These layers are not used in any elevation related calculations and are denoted by the letter ‘O’ (overlay)EditCreate boundary from selected laye...

Fill Depressions

T3RRA Design Plus Manual Drainage Tools

‘Fill Depressions’  creates a design surface with the largest indentations in the field filled in. A pop-up window will appear allowing you to change how transparent the fills are on the field as well as a checkbox that will allow you to select whether you wou...

Breach Depressions

T3RRA Design Plus Manual Drainage Tools

‘Breach Depressions’ allows you to break through a depression and allow water to flow out. ’Layer to breach’ selects which surface layer the breaching should be applied to. ‘Transparency’  of the design can be altered using the slider. ‘Output new surface’ wil...

Bust Gilgais

T3RRA Design Plus Manual Drainage Tools

‘Bust Gilgais’ breaches and evens out depressions (also known as melon holes or gilgais) in the field while moving as little dirt as possible. It is a blend between breach depressions and fill depressions.‘Layer to drain’ lets you choose the elevations to use....

Dam Creator

T3RRA Design Plus Manual Drainage Tools

The ‘Dam creator’ tool provides a simple process of creating a dam on any selected space on the field surface. This tool is able to make two types of dam, ‘Full Cut’ dams and ‘Borrow Pit’ Dams. So what are the differences and benefits for these dam types? ‘Ful...

Drains and Banks Tool

T3RRA Design Plus Manual Drainage Tools

The drains and banks tool is great for planning drains, ditches, channels, and troughs. Also roads, banks, ridges, levees and embankments. It also lets you plan more complex structures, like roads with drains on each side, custom contours - even whole shed pad...

Autodrains Tool

T3RRA Design Plus Manual Drainage Tools

This tool is used to quickly place drains that will ensure water doesn’t stay on the field for long. Once you’ve placed the drains, you can design them as normal with the Drains and Banks Tool.There are a few options when creating auto drains:‘Line smoothing s...

Add contour banks (T3D+)

T3RRA Design Plus Manual Drainage Tools

This tool is used to add contour banks/terraces. To begin creating a new set of contour banks/terraces click on the ‘Add new contour bank / terrace set’ button in the pop-up window. When creating contour banks/terraces a blue line in the working area is used t...

Show Depressions

T3RRA Design Plus Manual Surface Derivatives

This tool displays all depressions in the visible surfaces. The overlay layer shows the depth of the depression with a white to blue scale, starting at white for zero depth, going to deep blue at maximum depth. Tab: Whole Field '☐ Only include depres...

Show directional depressions

T3RRA Design Plus Manual Surface Derivatives

‘Show directional depression’ allows you to select a direction and display any depressions that would affect water flow in that specific direction that would otherwise not.‘Direction (degrees)’ this setting will rotate the simulated water flow direction to hel...

Show watershed

T3RRA Design Plus Manual Surface Derivatives

‘Show watersheds’ identifies the areas of the surface that will flow together to the same exit point on a field. The working area will display the surface in a patchwork of colors, these indicate your watersheds and what will flow out where, the specific color...

Show accumulated flow layer

T3RRA Design Plus Manual Surface Derivatives

The accumulated flow layer shows paths where the water is most likely to pass through. It is recommended that before using the ‘Show accumulated flow’ tool that the ‘Breach depressions’ tool is used for the most accurate water flow results. ‘Min. drainage area...

Show wetness index

T3RRA Design Plus Manual Surface Derivatives

‘Show Wetness index’ also referred to as the Hillslope Wetness Index. This tool creates a grayscale layer of the surface that uses high contrast to show the most affected areas. Darker areas on the field represent where the most water flow is, while lighter ar...