Tech Tips

Calculating Layerwork Volumes

This Tech Tip explains how to calculate layerwork volumes.


Solidifying the Layerworks

The first step is to solidify the layerworks, this function converts the layerworks in the road template into road layers.

Section Menu > Solidify Layerworks

Start chainageEnter the first chainage in the range of chainages to process.
Stop chainageEnter the last chainage in the range of chainages to process.
Base layerSelect the natural ground layer.
Batter layerSelect the layer that was generated using a template.
Initial destination layerSelect the first layer on which to create generated cross sections. This layer will be used for the first layerwork definition. Subsequent layers will be used for subsequent layerwork definitions. For example, if you specify Layer 3 as the initial layer and there are three layers in the layerworks definition, then layers 3, 4, and 5 will contain the generated cross sections. These layers will be renamed to the Layerwork descriptor value specified in the Template Editor, if they were not renamed manually.
Include outside points from Batter layer for:This option is used to include points in the batter layer cross section that lie outside the layerworks in the generated layer. See the illustration below.


Only Last Layerwork:

Only Last Layerwork Stepped:

All layerworks:

Step in Fill OnlyThis option is only available if "Only last layerwork detail - stepped" is checked. If this option is checked then the layerworks will only be stepped when in fill. In cut situations a box cut, with a width equal to the first layerwork in cut, will be created.
Try to intersect with batters: Left and/or rightThis option is not available if the "None" option is checked. If one of these options are checked you must specify a ground layer. Check these options to have the routine try to intercept with the batter slopes on the respective sides.

OK ButtonClick this button to accept the current entries in the dialog.
Cancel ButtonClick this button to cancel the function.

This function will overwrite data in existing layers without warning. You will be warned if the number of the initial destination layer is lower than that of the batter layer as the possibility of overwriting the batter layer is then very real. Other than that, no warning is given.

Once the layers have been solidified, the road cross section can be viewed with the additional layers.

Section Menu > Graphical Edit

Click on the "Show ground lines" icon.

The Section Lines dialog will be shown, select which layers you want to see. The additional solidified layers will be shown on the drop down. The names will be the names used in the road template.

The new road layers can be selected and displayed . Once the layers have been solidified, areas have to be recalculated.

Re-calculating of Areas

Area/Volume Menu > Recalculate Areas

I want to calculate the volume between layers "Ground" and "G5 Natural gravel", the areas will then be calculated between these 2 layers. If the output window is shown, the calculated areas will be shown in the output window.

Calculating the Volumes

Area/Volume Menu > Cumulative/Masshaul Volumes

Make sure the batter layer selected, is the same layer used for recalculating areas.

Click Calculate to calculate the volumes

Click Results to Output to have the final results displayed, saved to a file or printed.

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