https://play.google.com/store/apps/details?id=com.kurantsov.volumemeasurement&hl=ru

Measuring the volume of a cut and a fill.

Do you need to measure the volume of a fill or a
cut in a quarry? Or you need just to get a digital
terrain model (DTM), and the surveyor will not arrive soon enough, but you need
the result now.

The application Almagest Volume Measurement allows you
to measure the area of sections bounded by a maximum of 100 points connected by
straight lines in real time. These points must be measured,
taken from memory, or set via the keyboard. The measured area is projected onto an inclined reference plane defined by its
points (3D). Volumes are automatically measured by
calculating the digital terrain model (DTM) in the local coordinate system,
where the first base point is taken as the origin.

It is possible to work in local coordinate system: to
do this, you need to load at least one arbitrary point P, Lat, Lon, H into the group of base points (you can do it at
least at the equator, then 0,0,0,0) , and then load points in local coordinates
in the format P X Y H (you’ll have to separate by spaces 44 456.56 -856.34
111.55).

For obvious reasons, there should be more than three
points in the foundation base (and for the "extended base" mode (this
means a certain area that has been increased in area), there should be more
than three points for the fill/cut group).

There are two surface treatment modes:

- mode (1) - while surveying we remove/load the base
points of the material, and then proceed to the set of survey points of the
body of the fill. The surface of the fill includes the boundary points of the
foundation.

- and there is a special processing mode(2) - when the
extended foundation sets us only the plane by which we understand what is the
cut and what is the fill. The extended foundation points are not included into
the final triangulation (so there can’t be one (two)
points in the group). As a result, the surface of the body is
projected onto the expanded foundation.

Operating procedure:

1. Wait for the fixed GPS position when the status
icon on the top left is no longer visible.

It is better to start from the middle of the
foundation contour, since the application will not allow you to record a point
if it is 1 km away from the first point. You need to go around the perimeter of
the embankment (points are allowed inside, for a more
detailed survey of the foundation, when the embankment is not yet filled out).

Press "v" to save the survey at the end of
the survey of the foundation contour or in the process of it.

2. When you click on it, you will be
prompted to edit the captured points (pink background of the foundation
points), if you do not need to edit, click the "v" button again and
proceed to shooting the fill points (blue background when editing). The points
of the fill should not go beyond the contour of the foundation! It will remind
you once your position goes out of the boundary to ensure your work is limited
in a predetermined area. Press "v" to save the shooting at the end of
shooting the points of the fill or in the process of shooting. The presented list of points allows you to view all the points, and
by clicking the line you can edit the point (you can change the
latitude-longitude "LL", as well as the cartesian coordinates
"XYZ", but not more than for 1000 m. Editing can be useful, for
example, when we know that the foundation points are located at the same level,
but GPS accuracy is not exact to solve this result, and manual editing allows
you to specify the location of points. (Manually editing points and
using polar coordinates also allow you to shoot terrain by squares).

N. B. It is advisable to conduct high-precision GPS
surveys connecting to external RTK GPS receivers through Bluetooth.

The latest stage of accuracy enhancement uses the L5
band and is now fully deployed. GPS receivers released
in 2019 that use the L5 band can have much higher
accuracy, pinpointing to within 30 centimeters or 11.8 inches.

3. In the next
window, you can change the project name and add notes. Import/export points (in
P, Lat, Lon, H format). Along with exporting to
TXT, script * export of *.SCR is available (a set of commands for building a
surface from 3DFace to Autocad. You need to drag
from Explorer to Autocad desktop and the
surface will be built automatically)

- clicking "Results" opens a new window with
an already built triangulation that is available for:

- when you click on
the edge, it changes colour to red and the
button of “swap edge” becomes active. If swap is possible in this
triangulation, clicking on this button will allow you to approximate your
measurement with the existing terrain (just in case, let me remind you that you
need to shoot in the characteristic places of the terrain break (elevation
differences, peaks, hollows)

(Planned: In addition, the application allows you to
build a horizontal contours lines on the
site. Using them, you can find the lowest point, analyze
the water drop paths from the site.)

Double tap SHIFTS
CENTER OF ZOOM - double tap shifts the center of the zoom.

https://youtu.be/gxceDyb0Bjo
- AutoCAD allows you to convert surfaces and objects with thickness to 3D
bodies.

https://youtu.be/u-RJFKfTKLA
-Earthworks calculator

https://youtu.be/rtU9BtJ9TGo - Import Survey Points

It may be interesting to see my work. review of the apps:

- Auto level
surveying calculations + Ñollimation https://play.google.com/store/apps/details?id=com.niveler

- Spreadsheet interpolation https://play.google.com/store/apps/details?id=com.kurantsov.interpolationstationing