Preview

Soil Mechanics

Powerful Essays
Open Document
Open Document
17820 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Soil Mechanics
Soil Fundamentals

CONTENTS
Part 1 Soil Mechanics What Is Soil? ...................................................................page 1 Soil Groups .....................................................................page 1 Grain Size Limits.............................................................page 2 Soil Properties and Characteristics...................................page 2 Soil Analysis ....................................................................page 7 Moisture Content............................................................page 9 Atterberg Limits ............................................................page 10 Soil Classification ..........................................................page 13 AASHTO classification system ......................................page 14 Unified classification system ..........................................page 16 FAA classification system...............................................page 19 Summary of Identifying Clues for Gradation and Plasticity .....................................page 22 Part 2 Embankment Compaction..............................................page 25 Controlling Factors........................................................page 25 Soil Moisture - Density Tests.........................................page 31 Laboratory Tests ............................................................page 31 Field Density Tests ........................................................page 35 Specifications.................................................................page 39 Job Layout.....................................................................page 41 Equipment Selection .....................................................page 40 Compaction Equipment Selection.................................page 42 Part 3 Base and Sub-base Compaction ......................................page 50 Sub-base Soils................................................................page 51 Aggregate Bases

You May Also Find These Documents Helpful

  • Good Essays

    apes lab report

    • 717 Words
    • 3 Pages

    The purpose of this lab was to be able to understand the importance of differing soil and to be able to determine the type of soil that was given. This would also help in understanding each type of soil and the nutrients and water that it is able to hold.…

    • 717 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    soils lab report

    • 298 Words
    • 2 Pages

    3. Which, if any, of your three soil samples would be best suited for good agricultural…

    • 298 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    SOIL MECHANICS

    • 4122 Words
    • 17 Pages

    called water content is the ratio of the weight of water to the weight of soil solids. This…

    • 4122 Words
    • 17 Pages
    Satisfactory Essays
  • Powerful Essays

    The quality of a soils structure may determine many factors that affect the plants health such as how well it may hold and retain or drain water, water infiltration and permeability rates of the soil, root penetration into the soil and soils pore size for air flow and respiration. All soils consists of different percentages of three variables; sand, silt and clay (Appendix 1.2) and each of these variables contain different properties and have different effects of the soils structure and therefore effect the effectiveness of a plants growth rate.…

    • 2635 Words
    • 11 Pages
    Powerful Essays
  • Good Essays

    Soil and Glaciers

    • 630 Words
    • 3 Pages

    Soils have been classified according to a system developed by soil scientists and the U.S. Soil Conservation Service. Using this classification system of soil orders, pick two locations on Earth, one in your current area and another area, and describe the order and the conditions that define it. (See Figure 4.12 in the textbook.)…

    • 630 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Hydrometer Anaysis

    • 362 Words
    • 2 Pages

    the particles will gradually settle out of the suspen- sion, and the density will be decreased. The hydrometer is the instrument used to measure the density of the suspension at a known depth below the surface. The density measurement, together with knowledge of specific gravity of the soil particles, determines the percentage of dispersed soil particles in suspension at the time and depth of measurement. Stokes’ law is used to calculate the maximum equivalent particle diameter for the material in suspension at this depth and for the elapsed time of settlement. A series of density measurements at known depth of suspension and at known times of settlement gives the percentages of particles finer than the diameters given by Stokes’ law. Thus the series of readings will reflect the amount of different sizes of particles in the fine-grained soils.…

    • 362 Words
    • 2 Pages
    Good Essays
  • Better Essays

    This test is performed to determine the magnitude and rate of volumes decrease that laterally confined soil specimen undergoes when subjected to different vertical pressures. From the measured data, the consolidation curve can be plotted. This data is useful in determining the compression index, the recompression index and the preconsolidation pressure of the soil. In addition, the data obtained can also be used to determine the coefficient of consolidation and the coefficient of secondary compression of the soil.…

    • 1059 Words
    • 5 Pages
    Better Essays
  • Good Essays

    Deforestation In Haiti

    • 649 Words
    • 3 Pages

    The first biophysical factor affecting soil is its topography, 75% of the land is mountainous with more than 60% of land with a gradient greater than 20%, even without human intervention, Haiti has a natural high risk of erosion. The second biophysical factor is its soil type. There are 4 major subtypes, Udepts and Usteps that are newly formed shallow soil that can support forests and grasslands. Fluvents that are shallow and sandy and so susceptible to leaching where the rate of soil erosion exceeds the rate of soil formation and Udults that are heavily leached acidic forests and has a very low fertility requiring additional nutrients to support successful crop production. Another factor is the bimodal rainfall pattern. Haiti has a tropical climate with two annual rainy seasons; April - June and August - November. These climatic conditions cause erosion by wind during periods of moisture deficit and by water during periods of moisture surplus. The differences in soil types means that there is a limited amount of cultivable land. Soil surveys by the US Department of Agriculture in 1980 state that only 11.3% of the land is suitable for crops, 31.7% is suitable for crops but with some restriction, 2.3% mediocre due to poor drainage system but acceptable for rice cultivation and 54.7% is suitable for tree crops or pastures due to severe erosion and steep…

    • 649 Words
    • 3 Pages
    Good Essays
  • Good Essays

    The Soggy Soil Case Study

    • 373 Words
    • 2 Pages

    Aaron, a crime scene investigator, was fairly used to grisly scenes of murder and death. He enjoyed his line of work and how he was able to travel the country due to his specialization in murder, and how the clues often led to a clear, concise solution and resolution; this time, however, that was not the case.…

    • 373 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Geography Chapter Notes

    • 606 Words
    • 3 Pages

    * Soil Texture refers to the relative proportions of different sized inorganic mineral particles of sand, silt, and clay.…

    • 606 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Soil Profile

    • 589 Words
    • 3 Pages

    Aim: To Compare and contrast 4 soil profile to each other and also to the true soil profile.…

    • 589 Words
    • 3 Pages
    Good Essays
  • Good Essays

    The purpose of this experiment was to determine the affect of vibration rate and time on the size reduction and size separation of particles. The objective was successfully completed and the initial sample of soil was separated by vibration into finer particles with a large amount passing through the smallest diameter screen which was 0.0278 inches producing a final product of fine soil particles which are now easier to transport and store. As can be seen from the graph below (figure 1) undersize particles verses screens, all three different vibration settings (45%, 65%, 85%) produced similar results for the screening process. At the beginning of the experiment (time zero) all of the soil sample was placed on the first screen, number 5, and after repeated screening (vibrating) the sample was broken down in more uniform sizes leaving larger pieces of soil left on the screen while smaller sizes fell through finally producing a fine powder left in the bottom pan. As can be seen from the graph below, after six minutes (the fourth bullet point on graph - each bullet point represents two minutes of vibrating) the soil had mostly been sorted into its final sizes.…

    • 479 Words
    • 2 Pages
    Good Essays
  • Better Essays

    Soil Erosion Soil

    • 3981 Words
    • 16 Pages

    Soil is formed at a rate of only 1 cm every 100 to 400 years and it takes 3000 to 12000 years to build enough soil to form productive land. This means that soil is a nonrenewable resource and once destroyed it is gone forever.…

    • 3981 Words
    • 16 Pages
    Better Essays
  • Better Essays

    Soil Erosion

    • 1326 Words
    • 6 Pages

    Soil erosion occurs when soil is removed through the action of wind and water at a greater rate than it is formed…

    • 1326 Words
    • 6 Pages
    Better Essays
  • Good Essays

    RHA; same trend for LL and PL. The Linear Shrinkage (LS) decreases as the RHA content increases, enhancing the volume stability of the soil. The results obtained from the researches’ work are shown below in Figure 2.7.…

    • 817 Words
    • 4 Pages
    Good Essays

Related Topics