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volume of cross section w/ 2 surfaces


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Posted

I am working on a levee project where the existing ground was picked up first and then the contractor striped the levee. I have created a DTM surface for both of these and then cut cross section every 100'.

 

I am trying to calcuate the volume that was cut at each 100' station and create the table (below), but not having any luck. I think its under the terrain menu. I know how to get the volume for the whole thing, but the problem is the topo only picked up shots every 100' so the volume would be bogus since it just interpolates between these 100' stations.

 

 

table.jpg

Posted
I am trying to calcuate the volume that was cut at each 100' station and create the table (below), but not having any luck. I think its under the terrain menu. I know how to get the volume for the whole thing, but the problem is the topo only picked up shots every 100' so the volume would be bogus since it just interpolates between these 100' stations.

 

You've got the cross sectional area of cut and cross sectional area of fill at each 100' station. That is, in relative to each other, the amount of cut/fill that occurred. To convert it to a volume, multiply it by an arbitrary unit length, e.g. 1'. That is the best answer you will be able to obtain if your survey simply doesn't have enough data except at the cross sections.

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