App Description

Rectangular quadrilateral grading pit volume

$$ V=(A+KH)(B+KH)H- \frac {1}{6} KH²(3B+2KH) $$

or

$$ V=A \cdot B \cdot H+ \frac {1}{2}KH²(2A+B)+ \frac {2}{3}K²H³ $$

A, B——Two-way excavation size of the bottom of the pit including the side width working face (m)

H——Pit excavation depth (m)

K——grading slope coefficient

Usage example

Input data:

A—Two-way excavation size of the bottom of the pit including the side width working face: 10

B—Two-way excavation of the bottom of the pit including the side width working face: 15

H-ground pit excavation depth: 7

K—grading slope coefficient: 6

Click "Calculate" to output the data:

Rectangular quadrilateral grading pit volume: 1323

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