To calculate the volume of excavated soil, you can use several methods. These methods include the Cross -sectional field data method, the End area method, the Grid method, and the Isosceles trapezoid method. We will talk about these methods in another write-up.
Cross-sectional field data
Calculating the volume of excavated soil is a straightforward process if you have cross-sectional data. For example, let’s say that the site contains a 12 m thick saturated clay deposit over bedrock. The excavation of this layer will expose four square meters of the soil’s bottom area. Using this data, you will be able to compute the volume of excavated soil in cubic meters.
Cross-sectional data provides a very accurate representation of area. It can quickly calculate volume, as it uses elevation and distance measurements. But it’s not a perfect way to measure volume. Depending on the type of excavation, you may have to make more than one measurement.
source: Erdaushub Entsorgungen in Berlin
End area method
The end area method can be used to calculate the volume of excavated soil. It involves measuring the volume of an area by making vertical slices of that area at regular intervals. The base line for the measurement is usually a property line, utility easement, or a roadway centerline. The intervals between the parallel slices may be variable, depending on the size of the site and its designed accuracy.
Another method, known as the borrow- pit method, involves using the average depth of the excavation. For this method, the field engineer creates a grid over the excavation area and collects elevation data at these points. This grid can be re-established during excavation if the field engineer finds it necessary. The average height of the area is then calculated, and the volume of excavated soil is estimated using this formula. This method provides more accurate results when the grid intervals are smaller.
Grid method
One method used to calculate the volume of excavated soil is the grid method. This method requires a site survey that shows both the existing and the new grade. These two elevations are then used to calculate intersection points. The resulting volumes are then entered into specific fields on a plan. The plan will also specify the recommended directions to move the excavated soil.
A grid should be created on a semi-transparent sheet of paper. This is to make mistakes easy to see. The grid should also be filled in by entering data on each vertex.
Isosceles trapezoid shape
To calculate the volume of excavated soil in an isosceles trapezoidic shape, you need to know the length of the top and bottom sides, the height, and the width. Then, divide these sides into two equal parts. If the area of the two parts is greater than one cube, then it is an isosceles trapezoide.
Borrow pit method
The Borrow pit method can be used to calculate the volume of excavated soil in a variety of situations. It can be used for both large and small projects. The borrow pit method has its advantages and disadvantages. A borrow pit is often abandoned after it is finished. This can lead to environmental and geo-environmental risks, including frequent landslides and erosion. It can also contaminate groundwater and cause accidents. The borrow pit method should be used in a professional manner, and the borrow pit should be properly designed by a professional.
Borrow pit volume estimation is a commonly used technique in civil engineering. Several methods have been developed and have been published in the literature. However, most of these methods rely on a particular polynomial that does not apply to every site. For this reason, a regression analysis must be done to determine the appropriate equation. In this study, we introduce a more accurate method of volume estimation for borrow pits.
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