CMGT 245-Assignment_1

NAME: CMGT 245 - Soils, Foundations, and Concrete Design, Mix, and Testing Assignment 1 Due date: 01/24/2024 Instructions Submission is online. Submit a PDF of your work online. Show solutions to each question. The assignment should be presented professionally, like how questions are solved in class. Use a straight edge or rule to draw all diagrams. ALL WORK SHOULD BE TYPED. A minimum of 5 points will be deducted if instructions are not followed. Question A sample of soil was tested in the laboratory, and the test results were listed as follows. Classify the soil by both the AASHTO system and the Unified Soil Classification System. Plot the sieve analysis graph for the soil sample. Utilize Microsoft Excel for this assignment.  Liquid Limit = 29%  Plastic Limit = 19% Mechanical grain-size analysis a. Complete the Sieve Analysis Table (40 POINTS) W s = 979.8 grams Sieve No. Sieve Sizes (mm) W 1 (g) W 2 (g) W 3 (g) R% CR% P% 4 4.76 420 420 0 0.00 0.00 100.00 10 2.000 413 510.2 97.2 9.92 9.92 90.08 20 0.841 408 569.6 161.6 16.49 26.41 73.59 40 0.42 379.8 579.4 199.6 20.37 46.79 53.21 60 0.25 478.8 737.4 258.6 26.39 73.18 26.82 140 0.105 324.4 555 230.6 23.54 96.71 3.29 200 0.074 304.8 314.2 9.4 0.96 97.67 2.33 Pan   518.4 541.2 22.8 2.33 100.00 0.00 Total               W s – Initial weight of soil sample W 1 – Weight of empty sieve in grams W 2 – Weight of sieve with retained soil R% - Percent od soil retained on sieve CR% - Cumulative percent of soil retained on sieve P% - Percent of soil passing the sieve

NAME: b. Plot the sieve analysis curve. Show all labels, Chart titles, Axis Titles and legend(s). Use a logarithmic scale for the x-axis. (40 POINTS) D 10 = 0.1 D 30 = 0.2 D 50 = 0.3 D 60 = 0.5 0.01 0.1 1 10 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 110.00 Sieve Analysis Graph Sieve Analysis Graph Grain Sizes Percent Passing % c. Calculate the following C c = ( D 30 ) 2 D 10 ×D 60 C c = ( 0.2 ) 2 ( 0.1 ) × ( 0.5 ) = 0.8