Oedometer test lab report. Standard Oedometer Test 2022-10-08
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An oedometer test, also known as a consolidation test, is a laboratory test used to determine the consolidation characteristics of soil. It is a critical test for evaluating the behavior of soil under load, as it can help engineers understand how a soil will behave under different load conditions and how it will settle over time.
The oedometer test is performed by placing a soil sample in a cylindrical cell and applying a vertical load to the soil using a loading device. The soil sample is then subjected to incremental loading over a series of time increments, and the amount of settlement is measured at each time increment. This process is repeated at different loading levels to determine the soil's consolidation characteristics.
The results of an oedometer test are typically presented in the form of a graph, with the vertical axis representing the amount of settlement and the horizontal axis representing the applied load. The slope of the curve on this graph is known as the compression index, which is a measure of the soil's compressibility.
The oedometer test is an important tool for understanding the behavior of soil under load and can be used to inform the design of foundations, pavements, and other structures that rely on soil stability. It is a common test in geotechnical engineering and is typically performed in a laboratory setting using specialized equipment.
In a lab report, the oedometer test would typically be described in detail, including the equipment and materials used, the test setup and procedure, and the results obtained. The report would also include a discussion of the implications of the test results and any recommendations for further testing or analysis.
Overall, the oedometer test is a valuable tool for understanding the behavior of soil under load and is an important part of the design and analysis of structures that rely on soil stability. By providing insight into a soil's consolidation characteristics, the oedometer test helps engineers design and build structures that are safe and effective.
Standard Oedometer Test
The minimum requirement to be an essay writer with our essay writing service is to have a college degree. Even though , money is lost and time is needed with the improving the methods used to correct overcultivation it is necessary and beneficial to farmers and consumers in the long run. When a saturated soil is loaded a state of Stress is set up and nearly all the load is initially carried by the water in the soil pores since the water is almost incompressible. Our academic writers will tackle all your computer science assignments and deliver them on time. The gradient of the graph is the coefficient of permeability, k since! You can relax and have peace of mind as our academic writers handle your sociology assignment.
SCE5331 Laboratory Report — Oedometer Test 1 P a g e 3. Additionally, for very organic soils and large clays, secondary consolidation must be considered since it undergoes a significant amount of total settlement Barnes, 2010. The water and wind is what causes the erosion to take place. Some parameters that are found are cv which is the coefficient of consolidation that is a variable that represents the rate at which saturated soil undergoes consolidation and mv which is the volume decrease of a unit volume of soil per unit increment of effective pressure during compression. This increase in effective stress References: Craig soil mechanics 7th edition Evaluation and interpretation of soil consolidation test by Carl B. It is when the transferred load links with the change in the total volume of soil that is equivalent to the volume of water drained Al -askari, n. Hacking our systems is close to impossible, and it has never happened.
Engineering Engineering is quite a demanding subject. From the changes in thickness at the end of each loading step, one can determine theSwelling Index Cs , Compression Index Cc and, Coefficient of Volume Compressibility mv. Pressure, Void Ratio, and Calculation of Coefficient of Consolidation Load Step Pressure psi Final Dial Reading in Change in Height ΔH in Final Specimen Height Ht f in Height Of Voids Hv in Final Void Ratio e Avg. You also get a plagiarism report attached to your paper. One my grandparents told me, that one time when they were young a typhoon with its devastating rain hit manila. The client can upload extra material and include additional instructions from the lecturer.
Stage III: secondary consolidation after complete dissipation of excess pore water pressure - some deformation of the sample is caused by plastic readjustment of soil fabric. QUESTIONS: Discuss the influencing factors of coefficient of consolidation. A schematic diagram of an oedometer is shown in Figure 1. The volume of flow at 1000cm 3 is measured through the use of a digital timer. Oedometer The oedometer is a laboratory device used for the examination of soil compressibility under a load and under conditions of prevented lateral strain in the soil. SITI HAJAR BINTI AHMAD FAUZI 2019806238 4.
Those are just a tip of the iceberg. From the changes in thickness recorded against time during test, the rate of consolidation can be observed and the Coefficient of Consolidation cv measured. Consolidation occurs due to the generation of an excess pore water pressure. The general shape of the plot of deformation of the sample versus time for a given load increment is shown in Figure 2. In this experiment, low permeability soil clays is used to obtain parameter such as compression index C v , coefficient of volume compressibility m v , coefficient of consolidation C v and coefficient of permeability k in order to estimate the behaviour of the soil in the past and future. From the changes in thickness at the end of each load stage the compressibility of the soil may be observed, and parameters measured such as Compression Index C c and Coefficient of Volume Compressibility m v.
This is repeated for two more tests, only altering the rate of steady flow for each test and the volume of flow at 500cm 3 and 250cm 3 respectively, ensuring different hydraulic gradients. The standard oedometer test is one of the most commonly used tests in geotechnical laboratory testing program. Therefore, it can be said that! The odometer Oedometer Test Group report Soil Mechanics Laboratory Report Faculty of Science and Technology Course Title No: SCE5331 Class BEng : Group No. This report also discuss how human error affect the results. These two components can be approximated based on the results of soil compressibility laboratory tests. Disregard and incorrect assumptions about foundation soil compressibility can lead to additional stresses within the structure and ultimately to its cracking and collapse.
The speed at which it flows through the soil particles is dependent on the differential head. We check all papers for plagiarism before we submit them. Afterwards, a tangent line is drawn to the initial linear section of the graph in order to determine the true zero displacement. It is the process in which the volume of a partly or completely saturated soil reduces in application of stress. Causation - This is specifically made for exam purpose of tort law. We deal in all academic disciplines since our writers are as diverse. We also ensure that the writers are handsomely compensated for their value.
Track the progress You communicate with the writer and know about the progress of the paper. The duration of the application of each load depends on the soil ans its consolidation characteristics. This results in an immediate increase of pore water pressure. The added load on a saturated soil is carried by the water in its pores to begin with, as water is incompressible. A key physical parameter of a soil that dictates the rate of seepage is the coefficient of permeability. Results Analysis Criteria Constant Head Test Data Item Test 1 Test 2 Test 3 Flow rate Q cm 310 234 366 Collection time sec 60 60 60 Water Temperature T 22 22 22 Head Difference h 28 47 37 Specimen Diameter 6.
Some other strategies to minimize overcultrivation are low-till farming and uses of fertilizers. An example of the procedure is given below. Furthermore, all our writers have academic writing experience and top-notch research skills. A cylindrical specimen of soil enclosed in a metal ring is subjected to a series of increasing static loads, while changes in thickness are recorded against time. Overcultivation erosion can be corrected by no-till agriculture.
Because they were near river, because of the heavy rain without warning the soil beneath their home collapse and their home was wash away in the river. In engineering practice, one of the most widely used laboratory devices for testing soil compressibility is the oedometer. Furthermore, the weights moving periodically throughout the experiment could have caused some inconsistencies. Student Name Student No. Subsidence causes permanent inundation of land, aggravates flooding, changes topographic gradients, ruptures the land surface, and reduces the capacity of aquifers to store water.