Soils And Ecosystems

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Describe the grading of the North sample from the uniformity coefficient.


In the table below fill in the plastic limit for each soil sample. According to the plastic limits the has a higher clay content. Based on the information above which soil is more cohesive?


Classify South soil sample based on the grading curves you have completed and the scale on the graph. O silty sand poorly graded fine sand well graded fine sand poorly graded coarse sand well graded silty sand well graded gravel sand poorly graded silt O clay poorly graded gravel


Finally, since you are the head engineer and make all of the final decisions, based on the data and calculations you have completed above, which location are you going to build the Prime Minister's new storage facility, if you are going to build at all? Briefly justify your choice.


Describe which of these soils will be a better draining material (Hint: in order to drain properly, a soil should have good porosity and permeability).


Several questions that will follow involve analyzing and interpreting the particle size distribution curves for the North and South sides of the Prime Minister's residence on the provided blank particle size distribution graph. You must download the particle size distribution graph, plot the sieve data from the North and South sides of the PM's residence ON THE SAME GRAPH. You must also determine the percent of each grain size from your completed curves and record them in the appropriate space below the graph. Once you have completed both of these tasks, upload your COMPLETED graph here. You can upload as an image or document file but please makes sure that both curves are labelled and the text is legible or it will not be graded. Again, you will need these data for other questions in this lab.


Describe the grading of the South sample from the uniformity coefficient. O well graded O uniform


Classify North soil sample based on the grading curves you have completed and the scale on the graph. O silty sand poorly graded fine sand well graded fine sand poorly graded coarse sand O well graded silty sand well graded silty sand poorly graded silt well graded coarse sand O clay O poorly graded gravel


You have also obtained some Atterberg Limit data for portions of each of the soil samples. Plot the data on the plasticity chart below.


Please fill out the following table after you have completed calculating the soil parameters. ONLY ENTER NUMBERS, NO % signs or other text should be entered in the table.


Describe the main causes of regional metamorphism? For the toolbar press LT


Name two aspects of sedimentary grains that can indicate how far the grains have been transported from their source area.For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).


Explain whether sediment is deposited as tilted or horizontal layers.


Two plastic-limit determinations had water contents of 23.1% and 23.6%. Determine the LL, PI, the flow index, and the toughness index. The flow index is the slope of the water content versus log of number of blows in the liquid-limit test, and the toughness index is the PI divided by the flow index.


Laboratory testing was performed on two soil samples (A and B) and the data is summarized in the table. Determine the USCS classification for samples A and B. Use log interpolationas necessary. Particle size analysis and Atterberg limits were performed for Soils C and D. Results are given in the following table. Classify Soils C and D according to the AASHTO system.


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