What are the calculation methods of earthwork?

Volume method: estimate earthwork volume with volume formula.

Profile method: the plot to be calculated, topographic units (such as mountains, streams, ponds, islands, etc. ) and earthwork (such as dikes, ditches, cutting, road grooves, etc. ) is divided into "sections" by a group of equidistant (or unequal) parallel sections, and the volumes of these "sections" are calculated respectively, and then the volumes of each section are accumulated to obtain the total earthwork volume of the calculated object.

Grid method: the grid method combines the design of leveling site with earthwork calculation.

2. "Earthwork volume" refers to the amount of excavation and filling required due to uneven site or excessive natural slope of the construction plant. The greater the earthwork volume, the higher the earthwork cost.

3. For example, the bottom of the foundation pit is 80m long, 60m wide and 8m deep, and the slope is 1:0.5. How to calculate the earthwork volume of excavation? The external dimension of the basement is 78m * 58m. If other coefficients are known, how to calculate the backfill quantity of the basement part?

Using this formula, V=H/6*(A 1+A0/4+A2) H is the pit depth, A 1 is the pit bottom area, A2 is the pit surface area, and A0 is the cross-sectional area in the pit.

A 1=80*60=4800

a2 =(80+4 * 2)*(60+4 * 2)= 88 * 68 = 5984

A0 =(80+2 * 2)*(60+2 * 2)= 84 * 64 = 5376

The excavation volume is: v = 8/6 * (4800+4 * 5376+5984) = 43050.67 cubic meters.

Backfill volume of basement =43050.67-78*58*8=6858.67 cubic meters.