What is an earthwork grid?

The earthwork grid is a method of earthwork excavation and backfilling in topographic survey. During the survey, the plot of land to be constructed is controlled by a square grid. The size of the square grid is determined according to the topography and accuracy requirements, and the square grids are measured.

The elevation of the square grid is drawn, and the average value is calculated according to the elevation of the square grid, and the earthwork amount of the square grid can be calculated.

It's an earthwork grid.

The grid method is suitable for estimating large-area earthwork and some sites with small terrain undulations and gentle slope changes.

This method is to divide the site into several square grids, and then calculate the volume of each four-sided prism, thereby summarizing the volumes of all four-sided prisms to obtain the total earth volume.

In traditional square grid calculations, the calculation accuracy of earthwork volume is not high.

The calculation of earthwork volume is an important step in construction projects.

The amount of earth and stone must be budgeted in the design stage before construction, which is directly related to the cost estimate and program selection of the project.

The extended information must have: 1. Original landform plan.

This is what you call "the original terrain map of the site".

(Provided by the design unit, geological survey unit, or local surveying and mapping bureau) The map must be marked with contour lines, elevation (elevation based on the Yellow Sea elevation and the relative elevation of the house), and corner point coordinates.

2. Topographic map or floor plan after forming.

(Topographic map after flattening) The map must be marked with the post-molding elevation (the elevation based on the Yellow Sea elevation and the relative elevation of the house), the flattened area, and the coordinates of each corner point.

3. Earthwork calculation diagram.

If the square grid method is used, a square grid diagram will be provided; if the cross-section method is used, a complete cross-section diagram will be provided.