Cut/Fill Areas

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Ben Pain
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Cut/Fill Areas

Post by Ben Pain »

How can i work out areas for Cut to Fill?

Also is it possible to work out a volume for a polygon within the design area other than doing a volume by grid?
Dylan Revell
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Post by Dylan Revell »

Hi Ben,

You can get a volume between tins within a polygon area either in exact or end area by inducing the polygon options. You can select apolygon you have drawn or draw one youself (rectangle, trapezoid or lasso).

Dylan
Dylan Revell
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Posts: 310
Joined: Thu Apr 05, 2007 2:46 pm

Post by Dylan Revell »

Part 2.

To get an area of cut/fill use Tins > Tin Analyisis > Depth Range Polygons.
You will need to create asimple range file e.g -1000 to 0 = Red and 0 to 1000 = Blue.

This creates closed polyons which you can then report areas of either by string inquire or Report > Length/Area.

Dylan
Ben Pain
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Post by Ben Pain »

why are some of the areas that the report file outputs negative

eg

length area centroid x centroid y closed type name

114.014 -332.875 395611.342 829161.327 yes Super range 2 face 1
555.222 -4171.488 395644.728 829134.165 yes Super range 2 face 2
7.653 1.361 395623.762 829094.055 yes Super range 1 face 3
75.769 253.012 395634.261 829084.332 yes Super range 1 face 4
9.603 -3.33 395647.46 829091.812 yes Super range 2 face 5
23.842 19.171 395650.521 829096.558 yes Super range 1 face 6
44.044 62.741 395639.185 829092.216 yes Super range 1 face 7
437.09 -1480.706 395630.088 829170.451 yes Super range 1 face 8


if i was to sum these in excell should i take the absolute value or should i leave them as intergers?
Ben Pain
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Post by Ben Pain »

also can i report on just some of the depth range polygons or parts of the - ie within a boundary polygon of sorts?
Ben Pain
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Post by Ben Pain »

Ok to find the areas use
Tins -> Tin Analysis -> Depth range polygons
then
User -> Miscellaneous -> A to C -> Calculate areas of coloured polygons
Sam Cech
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Post by Sam Cech »

Yes use the absolute value...
negative areas happen due to string direction...
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