How do you find the average end area?

This is expressed in the formula: V (Ft. In which V is the volume in cubic feet, A1 and A2 are the end areas in square feet of successive sections and L is the length in feet between the sections. (The end areas will be divided by 2 to come up with the average end area).

What are the different methods of estimating the earthwork?

To calculate the earthwork estimate requires multiplying the area by the difference between the average of two sets of levels. Formula: Volume = Area * Difference between the average of two sets of levels.

Which method of earthwork estimation is more accurate than other methods?

(1) 3D method of earthwork calculation by the latest software such as Civil 3D could be easily used in practice than ever before. 3D method possesses a higher accuracy than 2D method without consideration the error of the raw terrain data.

How is earthwork volume calculated?

Every section is an area formed by the subgrade, the sideslopes, and the original ground surface. Volumes are computed from cross-section measurements by the average end area method. These formulas are used to compute earthwork quantities because the Specifications require this calculation.

How to calculate the earthwork end area method?

EARTHWORK END AREA METHOD. The equation is actually in the name: “Average end areas” V= [ (A1+A2)/2]*L where A1 and A2 are the actual end areas, and L is the distance between the areas. As a simple example, if you have one cross section that is 50 s.f. and one cross section that is 150 s.f., while the sections are 50 feet apart, you have 5000 c.f.

How is the average end area method used?

Average End-Area Method. The Average End-Area method is a useful tool for estimating quantities in construction. It is an approximate method of calculating volume and is accurate enough for most situations. The general concept is that you calculate the total volume (V) of a material given, the area of two ends

How do you calculate the volume of earthwork?

CALCULATING EARTHWORK QUANTITIES 1. End Area Method a. Take cross-sections at regular intervals, typically, 100’ intervals. b. Calculate the cross-section end areas c. The volume of earthwork between sections is obtained by taking the average of the end areas at each station in square feet multiplied by the distance between sections

How to calculate the average end area of an embankment?

General:The traditional method used to calculate embankment and excavation volumes is the average end area method. The average end area procedure is as follows: C Cross sections of the existing terrain are first taken at regular intervals throughout the project as specified by the engineer.