Earthwork quantity calculation software (HTCAD)

A set of earthwork quantity calculation and drawing software developed on the AutoCAD platform. For various complex terrain conditions, the software uses the square grid method to calculate earthwork quantities. The software has good interactivity, friendly interface, is close to the designer's design ideas, and can calculate the amount of earth and stone in the shortest time. It is suitable for the general drawing major of industrial design institutes, planning and design, earthwork calculation in garden design, farmland regularization and transformation in agricultural engineering, earthwork calculation for building foundation trenches in real estate companies, etc. Support AutoCAD2000 to AutoCAD2006.

Main functions

Use the square grid method to calculate earthwork: lay out a square grid, automatically collect terrain elevations (including terrain contours and elevation discrete points), input or calculate (using least squares method optimization) design elevations, and obtain the amount of fill and excavation; when satisfying On the basis of design requirements, strive to balance the earthwork and minimize the total amount of earthwork.

Calculation steps

This software is divided into 6 parts, which are the processing of topographic maps; the processing of design elevations; the layout and collection of grid grids, and adjustment of elevations; the calculation and summary of earthwork filling and excavation quantities; the processing of earthwork zero lines, sections, slopes, etc. Drawing; adjustment of various parameters.
1． Topographic map processing:
Because the terrain contours and elevation discrete points on most topographic maps basically do not have real elevation information, or there is elevation information but the software does not recognize it, this requires certain conversion work to allow the software to automatically read the elevation data. Then the natural elevation on each grid point can be directly calculated in "3.3 Calculating Natural Elevation".
1.1 Define natural elevation points:
If there is no topographic map, directly enter the natural elevation value at the corresponding coordinate point according to the requirements.
1.2 Convert discrete point elevation:
For discrete points with existing elevation information (points with Z values), the elevation information can be automatically identified through the conversion program.
1.3 Collect discrete point elevations:
For existing discrete points that only have text labels but no elevation information, the program can automatically extract and assign elevation information.
1.4 Import natural elevation:
The data files generated by the total station are automatically imported and converted into graphic files.
1.5 Collect contour elevation:
The existing terrain contours only have text labels but no elevation information. The program can automatically extract and assign elevation information.
1.6 Discrete terrain contours:
Diffuse the elevation information of the contour lines to the surface to build a three-dimensional surface elevation information model (invisible). If this step is not done, subsequent work cannot be carried out.
2. Processing of design elevation:
For design elevations expressed in the form of design contours or elevation discrete points, the program needs to undergo certain processing before the software can automatically read the design elevation data.
Then the design elevation on each grid point can be directly calculated in "3.4 Calculating Design Elevation".
2.1 Define design elevation points:
For certain design elevations that have been determined, the program can directly input the design elevation values ​​at the corresponding coordinate points.
2.2 Collect design point elevation:
The design elevation values ​​of some points have been shown in the figure, but there are only text labels but no elevation information. The program automatically assigns elevation information.
2.3 Import design elevation:
The design elevation of certain coordinate points is expressed in the form of a text file, and the program can automatically read the text file.
2.4 Define design contours:
For design contours that only have text labels but no elevation information, the program automatically assigns elevation information.
2.5 Discrete design contours:
Diffuse the elevation information of the design contours to the surface to build a three-dimensional surface elevation information model (invisible). If this step is not done, subsequent work cannot be carried out.
3． The layout, collection and elevation adjustment of the square grid:
After the grid is laid out, the program can automatically collect based on the processed natural elevation and design elevation, or directly input the natural elevation and design elevation on the grid points.
3.1 Divide the venue:
According to the design needs, arrange the design scope that requires earthwork calculation.
3.2 Lay out the square grid:
Determine the grid size and angle according to the design needs, and the program automatically arranges the square grid.
3.3 Calculate natural elevation:
Based on the processed terrain, the program automatically calculates the natural elevation of each grid point.
3.4 Calculate design elevation:
Based on the processed design elevation, the program automatically calculates the design elevation of each grid point.
3.5 Enter natural elevation:
You can also directly input the natural elevation on each grid point (such as no elevation information, the same original elevation or a contour surface, etc.).
3.6 Enter the design elevation:
You can also directly input the design elevation on each grid point (if there is no elevation information, the design elevation is the same or a contour surface, etc.).
3.7 Enter the step elevation:
If you want to calculate the terrain with steps (such as terraces), you can use this function.
3.8 Adjust elevation:
The elevation value of the grid points can be adjusted to obtain the optimal amount of earth and stone filling and excavation.
3.9 Optimize design elevation:
The program uses the least squares method to optimize the amount of earthwork on the site, and strives to balance the earthwork and minimize the total amount of earthwork on the basis of meeting the design requirements.
4. Calculation and summary of earthwork filling and excavation quantities:
4.1 Calculate the square earthwork:
Based on the obtained natural elevation and design elevation, the program automatically calculates the filling amount and excavation amount of each square grid.
4.2 Summarize the earthwork volume:
The program automatically calculates the total amount of fill and cut based on the amount of earth and stone in each square. The user can repeat the operation "3.8 Adjusting the elevation".
In order to obtain the optimal amount of earth and stone filling and excavation.
4.3 Draw earthwork zero line:
The program automatically draws the earthwork zero line.
4.4 Draw a cross-section:
The program automatically draws a cross-section diagram based on the conditions of the cut-off surface.
4.5 Slope design:
Automatically draw slopes and calculate the amount of earth and stone on the slope according to the conditional program.
5. Adjustment of various parameters:
5.1 Display control: display or close various values.
5.2 Adjustment options: settings of various parameters such as font height, label position, precision, color, etc.