#### Maximum dry unit weight of soil

And more importantly, you know where the optimum is, so if the field conditions are too dry or too wet prior to compaction, you can adjust accordingly if needed. Next we run gnuplot from the command line Linux Debian OSview with the ImageMagick programme display and capture all output to stats. Therefore, it is logical to interpolate between these points, so my vote would be to use the cubic spline approach, including all points, rather than use the linear regression model. But that is the general idea. Finally, which curve is the most appropriate? This means you could either measure more points to reduce uncertaintychoose a different fit, etc.

It is peak density of the soil taken in the driest state. The maximum dry unit weight is determined using laboratory method for the standard proctor test.

## Soil classification

From the. The dry unit weight distribution for peat, organic soil, and clay are presented later in Figs. . The maximum dry unit weight of soil was determined by placing the. Note that the increase in the unit weight and the reduction in the moisture maximum dry density, vibrations will result in the rearrangement of the soil grains.

Data File Using GnuPlotwe look at: 1 linear regression using quadratic forms and 2 interpolation between points using cubic splines.

It is also clear that if a dispute were to emerge on a construction project, the Contractor would have a legitimate case. Is this a homework problem?

## Unit Weights and Densities of Soil Geotechnical Engineering Review

You might be spreading security…. Using GnuPlotwe look at: 1 linear regression using quadratic forms and 2 interpolation between points using cubic splines. Next we run gnuplot from the command line Linux Debian OSview with the ImageMagick programme display and capture all output to stats.

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Trajano Nico P. Sign up or log in Sign up using Google. In Columns 3 and 4 we eliminate point 4 as an outlier it's not an outlier, but for the sake of comparison, let's consider it. One of the things that struck me about this question is that the course booklet states the maximum value is higher than the results of the test, that is:. Next we run gnuplot from the command line Linux Debian OSview with the ImageMagick programme display and capture all output to stats. |

So plot moisture content (w) vs dry. Typical values of soil dry unit weight for diffenet types of soils. because we are interested in the weight of solid soil particles in a given volume, optimum moisture content, mopt, for the maximum dry unit weight, (γdry)max.

However, if we want to interpolate, you need to decide on a fit.

Using GnuPlotwe look at: 1 linear regression using quadratic forms and 2 interpolation between points using cubic splines.

So let's put this under scrutiny, by examining the data with commonly accepted curve fitting methods. Email Required, but never shown. Columns 1 and 2 are the data given. From inspection of the Moisture-Density plots, the maximum values from the various curve fitting methods do not exceed the measured test value, only the position of the optimum moisture content changes.

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The weight and volume of a soil sample depends on the specific gravity of the soil. The peak or maximum dry unit weight usually corresponds to saturation.

One of the things that struck me about this question is that the course booklet states the maximum value is higher than the results of the test, that is:.

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Hot Network Questions. For this reason only 5 test values are required. Note that you have a measured point that is above your interpolated maximum. Now the best fit for Columns 3 and 4 with the so-called outlier, point 4, discarded becomes:. Video: Maximum dry unit weight of soil How to calculate Maximum Dry Density and Optimum Moisture content of Soil, M U Solved Example Data File Using GnuPlotwe look at: 1 linear regression using quadratic forms and 2 interpolation between points using cubic splines. The data file for this process, points. Trajano Nico P. |

The relationship could be ball-parked as quadratic, so fitting it see image below as such yields.

Related 4. So let's put this under scrutiny, by examining the data with commonly accepted curve fitting methods.

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