Problem with calculations of section areas

[pedrochavez48]

When I do  earthwork calculations, sometimes some sections do no show cut nor fill areas, even if the section intersect the surface. Why this could happen, and how can I avoid this?

[BrianHailey]

Hi, and welcome to the forums.

Can you provide a bit more information? I assume you are using the compute materials command on a sample line group. Are you not seeing the areas of cut and fill only or are there no cut and fill quantities calculated for that section? If you create a table for the quantities, do those sections show no data?

[Hidden_Brain]

in the past, i have gotten around this problem by sliding the sample line along the alignment by a small amount (an inch or so).

[pedrochavez48]

The problem arises when you use an assembly like this:
1. a basic lane both sides.2. a BasicSideSlopeCutDitch both sides
Then you make 
1. A corridor using this assembly. 2. Then create the corridor surfaces, 3. Calculate the earthwork, 4. Draw the sections 5. Create a report of the earthwork 
When you chek the report, you find some sections that have no cut  nor fill calculated (they appear as zero (0), When you look at the drawing of this section, you find that the section shows a closed shape, that is, THERE IS A CUT AREA AND A FILL AREA. However, the report shows them as zero.
I solved the problem this way:I added a ConditionalCutOrFill at each of the cut or fill branch of the BasicSideSlopeCutDitch (there are four branches; you add four ConditionalCutOrFill. When you perform th steps 1 to 5, and check the report and the sections, you find all the sections have cut or fill.as it should be. The problem is solved.

[Hidden_Brain]

great! thanks for sharing the tip.