To calculate the volume of earth masses by the square mesh method, you need a situational and highness plan that is the basis for the development of the project, made by the square mesh method.
A height plan made on the square mesh with the layer of existing shape.
Square on the stain may be side of the length 10-40 m. The designed terrain can be presented on such a foundation using the deleted layers. The designed ordinates are usually determined by interpolation. The existing and designed ordinates are in line with the tops of the squares. The designed ordinates determine the height of the embankment or the depth of the excavation. Next to the vertex there is a difference of ordinates with the "+" sign in relation to excavations and "-" to the embankments.
Plan prepared to calculate the volume of excavations and embankments.
Calculation of volume is performed separately for each square, for all or part of his field in this way, that the average difference (ordinates in the vertices of a certain field are multiplied through the surface of the field.
The course of the zero line separating the excavations from the embankments can be such, that full squares corresponding to excavations or embankments will occur on the stain, squares divided into two trapezoids and squares separated into pentagoniacs and triangles.
Possible ways of the zero line through the fields of squares.
The volume of earth masses is calculated in these cases according to the following formulas:
The resulting calculations are entered in:
The calculated volume of the masses is also included on the surface of specific fields on the set. In order to facilitate the organization of transport mass transport on the set, the recommended directions of land movement from excavations are also given.
Plan with entered volumes of excavations and embankments and an indication of the direction and volume of moved ground masses from excavations.
The squares grid method uses the dog to calculate the volume of earthworks in areas with a varied existing and planned surface sculpture.