Frequent question: How is cut and fill calculated in Civil 3D?

How is cut and fill calculated?

The cut or fill depth for each cell is found by subtracting the average existing level of the cell from the average proposed level. If the resultant depth is positive then this is a fill cell, while a negative value indicates a cut cell.

What is cut and fill factor in Civil 3d?

For Cut and Fill Factor, let’s use 1.10. These factors control, depending on the soil type, how much the material swells after removal, or how much it is compacted when put in place. This means that for every cubic meter or feet of cut material we will need to haul 1.1 cubic meter or feet.

How do you calculate a filling?

Suppose we need to fill the plot by 3’5” = 3.41 feet. So, the depth of the plot = 3.41 feet. Volume of plot to be filled = 1200 x 3.41 = 4092 cft.

How do you calculate fill material?

Calculate the amount of fill needed with this formula: Width x Length x Depth divided by 27. All these dimensions should be calculated in feet. For example, to find the volume of an area 25-feet wide by 36-feet long with a depth of 3-inches, enter 25 x 36 x .

How do you calculate cut and fill by hand?

This method involves drawing horizontal and vertical lines over your site plan to divide it into grid cells of equal size. You then include the existing elevation and proposed elevation for each corner of the grid cells, and work out the difference between the two, as this will be cut or fill depth for that spot.

What is cut and fill factor?

The cut factor is used to adjust the volume of excavated material to account for the amount you expect the material to swell when it is excavated. The fill factor is used to account for the additional volume of material that would be required due to the compaction of the soil when it is placed.

What is cut fill analysis?

What Is Cut & Fill? In earthmoving, cut and fill analysis quantifies the amount of dirt to move in a project. That figure is essential in the bidding phase. Results of a cut and fill analysis often lead to discussions and plan adjustments.

How do you calculate fill sand?

To determine how much sand, topsoil or stone you need to fill an area:

1. Measure number of square feet in the area.
2. # of square feet x depth in feet = # of cubic feet.
3. # of cubic feet /divided by 27 = # of cubic yards.
4. # of cubic yards x (unit weight in pounds / 2000) = # of tons needed.

How do you calculate backfill?

For example, find the cubic footage volume of a backfill area that is 8 feet wide, 6 feet deep and 50 feet long. The volume of a rectangular cubed shape is found by the formula v = l x w x d, where v represents volume, l is the length of the trench, w is the width and d is the depth.

How do you calculate soil volume?

To estimate soil volume for any area, all you need is a tape measure. “The basic formula is simple: Length x Width x Height = Volume,” says Michael Dean, co-founder of Pool Research. Then divide the number of cubic feet by 27. So one cubic yard = 27 cubic feet = 1,728 cubic inches.

How do you calculate backfill and excavation?

Backfill for Figure 3.1:

1. Backfill volume = excavation volume – footing volume – wall volume. …
2. (Note that only the portion of the wall that is in the trench is deducted, so the height of wall in the trench is the average trench depth minus 2′-0” for the footing: 6′-0” – 2′-0” is 4′-0”)
3. Backfill volume = 207.4 cubic yards.

How is select fill dirt calculated?

Length in feet x Width in feet x Depth in feet (inches divided by 12). Take the total and divide by 27 (the amount of cubic feet in a yard). The final figure will be the estimated amount of cubic yards required.

How do you calculate excavation and backfill costs?

The cost of excavation is generally estimated by multiplying the total excavation volume to the excavation price per unit.