What is cut factor and fill factor?

n Cut factor: Compensates for the expansion factor of the material left after the cut. n Fill factor: Compensates for the compaction factor of the fill material. For example, for a material that expands 15 percent, type the value 1.15.

How is cut and fill calculated in Civil 3d?

Solution:

1. In command line type “COMPUTEMATERIALS”.
2. Select the alignment and sample line group to sample, then click “OK”.
3. Change “Quantity takeoff criteria” to “Cut and Fill” or other desired criteria.
4. Map the sampled surfaces to the correct object names, then click “OK”.

What is cut fill ratio?

The cut/fill ratio is determined by the type of material being moved and what percentage of it will “settle” or “shrink” once compacted. Example: Setting the Cut/fill ratio at 1.2 means that you are moving at the rate of 1.2 cubic yards of cut to get 1.0 cubic yards of compact fill.

How do you calculate shrinkage factor?

Subtract the final size from the original size to find the amount of the shrinkage. For example, if a felt square shrinks from 8 square inches to 6 square inches, subtract 6 from 8, resulting in 2 square inches of shrinkage. Divide the amount of shrinkage by the original size to find the shrinkage rate.

How do you get volume in Civil 3D?

To calculate volumes in Civil 3D 2014: After creating your ground surface and your graded surface, click the Analyze Tab → Volumes and Material Panel (as shown above).

How do you create earthworks in Civil 3D?

To Create an Earthwork Construction Plan

1. Click Analyze tab Volumes and Materials panel Earthwork Plan Production Find.
2. Select the existing ground TIN surface.
3. Select the finished ground TIN surface.
4. Optionally, select a grid point.
5. Optionally, select a 2D polyline as a boundary.

How do you manually calculate cut and fill?

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.

How cut and fill works?

In excavation, cut and fill is the process of constructing a railway, road or canal whereby the amount of material from cuts roughly matches the amount of fill needed to make nearby embankments, so minimizing the amount of construction labor.

How does a cut and fill in Civil 3D work?

Therefore, before we can create a cut and fill volume in Civil 3D, we need to create two comparison surfaces. Generally, these two TIN surfaces will represent the existing ground, or EG, and the finished ground, or FG. The former is created from a traditional topographical survey or a point cloud from drones or laser scans.

How is the volume of fill calculated in Civil 3D?

In the Prospector, select the surface, right-click and go to Surface Properties. Then, on the Statistics tab, expand the Volume tree. Notice the adjusted and unadjusted Cut Volumes. As expected, the adjusted volume is 10% more. And of course, the volume of Fill is zero because we are estimating a topsoil volume, which consists only of cut material.

How are cut and fill factors used in Autodesk?

The Help says “Type a Cut factor and a Fill factor for the Grid Volumes Corrections values. These values compensate for expansion and compaction of the surface material, and help to determine the actual volume of material that needs to be removed (the cut factor) or added (the fill factor) to the site.

What is the volume correction factor for cut and fill?

While using the Grid Volume Method for producing Cut and Fills we wanted to include the volume correction factor of 0.85 for fill (fill will campact to only 85% of what is used). When caluclating the cut and fill with the factor it seems to work incorrectly. The fill is reduced by 15%.