Users may refer the parameter settings that are available under Project Settings.
Pixel Size #
Pixel Size setting is located at Options > Project Settings > Earthwork > Analysis > Pixel Size.
Functionality
If the corner of platforms or the intersecting points of platforms are less than specified ‘Pixel Size’, those points will be reduced to become a common point between platforms. Snapshots below show the functionality:-
View before enlarged:
View after enlarged:
After ‘Pixel Size’ took effect:
The corner point of platforms is much closer to each other and is less than the value of specified ‘Pixel Size’. Therefore after analysis, these corners will be reduced to become a common corner point between platforms.
How to use
If a platform is very small until all of its corner points distance is less than the specified value of ‘Pixel Size’, it will cause the platform to become a dot which is having only one corner point. This scenario will cause the below dialog to appear after proceeding to Analysis.
To solve this matter, users have to gradually reduce ‘Pixel Size’.
Maximum Survey Points #
Maximum survey points usage setting is located at Options > Project Settings > Earthworks > Analysis > Survey Points Usage Indicator.
Functionality
By default, the meshing method that the software use is the Irregular TIN in which this method will Interpolate the terrain directly from survey points. Other meshing method available in the software is the Regular TRN. More detailed explanation on the difference between the two methods can be referred: Difference between TRN and TIN.
How to use
If the ‘Use All Survey Points’ is set to No, users will be able to set the maximum number of survey points used to generate the mesh. The higher the number of survey points set will produce better triangulation and at the same time will require more memory from the computer.
Offset Distance #
Offset distance setting is located at Options > Project Settings > Earthwork > Detailing > Cut Section> X Detail Interval (m).
To change the offset distance setting for existing cut section, go to Earthworks > Input > Individual/Master Strings > Spread Input.
Functionality
Distance in the cut section can be preset by the user in a setting named ‘X Detail Interval’. Snapshot below shows an offset distance of 10 meters in the cut section.
Elevation Interval #
Elevation Interval is used to add more sectional information on a platform height and the value will be multiple of the value inserted. Elevation Interval setting is located at Options > Project Settings > Earthwork > Detailing > Cut Section > Elevation Interval (m).
Please note that the changed setting under parameter setting will only be applied to newly created cut lines. To change the elevation interval setting for existing cut section, go to Earthworks > Input > Individual/Master Strings > Spread Input.
Functionality
Interval for elevation in the cut section can be preset by the user. Snapshot below shows an elevation interval of 5 meters in the cut section.
Swell Factor & Shrink Factor #
Swell Factor and Shrink Factor are used in earthwork module to account for changes in densities of excavated and compacted earthworks. Cut and fill computation will consider the swell and shrink factor set by the user.
Both factors can be modified under Options > Project Settings > Earthworks > Material.
Specific field and laboratory tests are needed to better characterize the changes in densities of the various earthwork materials.
Formulae
Expanded Cut:
Expanded Cut = Bank Cut * Soil Swell Factor
Volume Needed Before Compact Fill:
Volume Needed Before Compacted Fill=Bank Fill/Soil Shrink Factor
Export/Import:
Export/ Import = Expanded Cut – Volume Needed Before Compacted Fill
Slope Setting #
Under this slope setting, users are able to set the default slope that will be assigned when the slope is generated. Other than the slope setting, slope classification based on the gradient can also be find under this parameter setting.
Typical Slope #
Typical slope value for berm details, cut and fill slope is editable.
Go to Options > Project Settings > Earthwork > Typical Slope.
* Note: For every changes apply at the parameter setting, the changes will only apply to a new created platform (new platform created after changes are made at the parameter setting) except for the Centralize Common Slopes.
For an existing platform, user will need to change the slope setting at the platform editor. To go into platform editor, double click on the platform (please make sure Edit button is activated).
For further information on Slope Template, please refer to our website article on How to Modify Slope Dimension.
Slope Classification #
Slope classification is a default value by the Mineral and Geoscience Department Malaysia (JMG).
Users may override the default value set by software by referring to state authority requirements such as Jabatan Perancangan Bandar dan Desa Selangor (JPBD) and etc. Go to Options > Project Settings > Earthwork > Terrain Analysis > Slope Gradient Categories.
This parameter setting can be seen reflected at the slope classification.
To view the slope classification, go to Terrain > Slope Classification.
Watershed Delineation #
Watershed delineation setting can be found at Options > Project Settings > Earthwork > Terrain Analysis > DEM Parameter.
DEM Grid – Cell Size #
The smaller the cell size is, the more refined is the whole DEM
TauDEM Parameter #
- Nc
Yes = no edge contamination checking,
No = has edge contamination checking
The effect of edge contamination checking is that the drainage and cells that are turning inwards from the boundaries will not be evaluated
- Threshold
This parameter is compared to the value in the Accumulated Stream Source grid (*ssa) to determine if the cell should be considered a stream cell.
Streams are identified as grid cells for which ssa value is > = this threshold.
A unitless parameter to tune the number of streamlines. The bigger this number is, the more streamlines there are.
- Input Weight Grid
Turn this parameter to false to include the streamlines and contributing catchment areas that are not normally covered that are too small to merge into the mainstream.
Yes = the value from the weight grid is used instead of assuming the contribution of each grid as one.
No = the contribution of each grid cell is taken as one.
Steps and Procedure #
- Create new project / open existing MiTS project file
- Import survey points for newly created project file
- Go to Earthwork > Terrain > Click ‘Watershed’
- Software will generate the watershed delineation
- User may also refer video tutorial here
Alpha Setting #
To set alpha settings, users may go to RHS and click on terrain.
When the user sets the alpha to maximum, software will maximise the survey points boundary (convex hull) by connecting all the side survey points and will provide more area.
To enable the survey points boundary, go to RHS > Terrain Tab > Change Show Survey Point Influence Area from No to Yes
By activation the survey point boundary, when adjusting alpha, the user can clearly see how alpha controls the survey point boundary (convex hull) generated.
Difference of the alpha setting can be see from images below:
Title Block Settings #
Title block setting for exporting purpose can be referred in this section.
Number of Layout Viewports #
To change the layout number setting, go to Options > Project Settings > Earthworks > Detailing > Viewport > CAD Layout > CutSection #.
Therefore, output will only show four layout viewports in a layout.
Changes in the number of layouts are applied for new and existing modelling.
Layout Scale for Existing Modelling #
To change existing Individual/Master Strings Cut Sections, go to Earthworks > Input > Individual/Master Strings > Spread Input.
Layout Scale for New Modelling #
For layout scale setting, go to Options > Project Settings > Earthworks > Detailing > Viewport > Scale.
Layout Scale for Road Module Cross Section #
To change the layout scale setting for road cross section, go to Options > Project Settings > Road > Detailing > Cross Section > General.
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