Following is the result of a modified proctor test. Determine the maximum dry unit weight, void ratio and saturation at optimum moisture content and energy of compaction. Make a tabulation of all your results. Volume of Mold (m³)Weight of Moise Soil in Mold (kN)Moisture Content0.0009450.0162100.0009450.0172OF120.0009450.0179140.0009450.0177160.0009450.0173180.0009450.016620

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Engineering

Civil Engineering

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Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Soil Deposits-origin, Grain-size, And Shape

Section: Chapter Questions

Problem 2.1P

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PROBLEM No. 1 Particle Size Distributior Weight of Container Weight of Container + Dry Soil Weight of Dry Soil Sample 198 g 722 g 524 g Mass of Mass of Mass of Soil Sieve Diameter Percent Percent Empty Sieve (g) 116.00 Sieve + Soil Retained No. (mm) Retained Passing Retained (g) (g) 4 4.750 2.000 148.00 10 99.00 213.00 20 0.840 0.425 98.00 175.00 40 97.00 182.00 60 0.250 94.00 157.00 140 0.106 93.00 184.00 200 0.075 91.00 117.00 Pan 70.00 106.00 Total Weight of Soil = Determine the following: Using USCS: % Gravel (Hint: use interpolation in lieu of graphing) D10 = D30 = D60 mm mm % Sand mm % Fines Cu = Cc =
Using the design chart below. Estimate the SN if W18=10x10^6, R=90%, So=0.35, Mr- 10000Psi, APSI=3. Use the chart below. TL Overall standard deviation, S. Design serviceability loss, APSI 50 10 5.0 99.9 0.2 99 1.0 0.4 0.5 0.6 E 90 0.5 0.1 1.5 0.05 2.0 2.5 80 3.0 9 87 6 5 4 2 1 Example: 6.5 5.5 4.5 3.5 2.5 1.5 W18 = 5 x 106 R = 95% Design structural number, SN S, = 0.35 MR = 5000 Ib/in? APSI = 1.9 Solution: SN = 5.0 -1.0
1. Using the design chart below. Estimate the SN if W18=10x10^6, R=90%, So=0.35, Mr- 10000Psi, ΔPSI=3. Use the chart below. TL Overall standard deviation, S. TL Design serviceability loss, APSI 50 10 5.0 99.9 0.2 99 1.0 0.4 0.6 90 0.5 0.5 0.1 1.5 0.05 2.0 80 70 60 50 2.5 3.0 9 87 6|5 4 3 1 Eхample: 6.5 5.5 4.5 3.5 2.5 1.5 W18 = 5 x 106 Design structural number, SN R = 95% S, = 0.35 MR = 5000 Ib/in? APSI = 1.9 Solution: SN = 5.0 Figure 4.5 Design chart for flexible pavements based on the use of mean values for each input.
5.28 Table P5.28 shows the grain size distributions of two aggregates A and B. TABLE P5.28 Sieve Size, mm 25 19 12.5 9.5 4.750 2.36 1.18 0.600 0.300 0.150 0.075 % Passing 100 Agg. A 92 76 71 53 38 32 17 10 5 3.0 % Passing 100 Agg. B 100 92 65 37 31 30 29 28 21 15.4 Answer the following questions and show all calculations: a. What are the maximum sizes of aggregates A and B? b. Is aggregate A well graded? Why? c. Is aggregate B well graded? Why? Note: In order to answer questions b and c, you need to plot the gradations on 0.45 gradation charts. You may create 0.45 power gradation charts using Excel or you may manually plot the data on a copy of Figure A.25. Determine the percent passing each sieve for the blended aggregate.
Determine the SN if w18=10x10^6, R=99%, So=0.35, Mr=15,000, PSI Change=2.5. SN=_____
Using the design chart below. Estimate the SN if W18=10x10^6, R=90%, So=0.35, Mr- 10000Psi, APSI=3. Use the chart below. TL Overall standard deviation, S. TL Design serviceability loss, APSI |50 10 5.0 99.9 40 20 0.2 10 99 |1.0 0.4 0.5 0.6 0.6 E 0.5 0.1 1.5 '0.05 2.0 2.5 3.0 60 50 9 87 65 4 3 2 Example: 6.5 5.5 4.5 3.5 2.5 1.5 W18 = 5 x 106 R = 95% S, = 0.35 MR = 5000 lb/in? APSI = 1.9 Design structural number, SN %3D %3D Solution: SN = 5.0 Reliability, R (%) Estimated total 18-kip-equivalent single-axle load applications, W8 (millions) Effective roadbed soil resilient modulus, M2 (kips/in?) - 1.0-
Given the following problems, give illustrations; provide solutions using proper equations and variables; convert figures if necessary; and reduce answers to appropriate significant figures up to two decimal places only: 1. Convert the following moisture content as indicated. Show your solutions. 18% wb to MCdb 26% wb to MCdb 15% db to MCwb 20% db to MCwb 24% db to MCwb 2. Determine the weight loss of a ton of paddy at 24% if dried to 14%. Correspondingly, determine the price at different level. Considering price difference of P2.00/kg between wet and dry. Make your conclusion from the above figures. 3. From a one hectare farm, 150 bags (50kg/bag) of palay were harvested with moisture content of 26%MVwb. If it will be dry to 14%MC, determine how much water will be removed from drying? 4. One hundred (100) bags of freshly harvested palay was dried to 14%MC and became 90 bags. Determine the fresh moisture content before drying. 5. Two tons of paddy with 22% moisture content on wet…
What is the moisture content for test 1? Round off your answer to two decimal places. No need to indicate the percentage sign. Test No. 1 2 3 Can No./ID Mass of can (g) A В 15.26 17.01 15.17 Mass of can + moist soil (g) 29.30 31.58 31.45 Mass of can + dry soil (g) 25.84 27.72 26.96 moisture content number of blows 35 23 17
The following is a tabulation of volumes of cut and fill. The shrinkage factor of the material is 10%. volume in cut or fill in m2 Station 1+000 200 1+020 150 1+040 180 1+060 140 1+080 110 1+100 190 1+120 120 1+140 -40 1+160 -120 1+180 -90 1+200 -80 1+220 -200 1+240 -220 1+260 -110 1+280 -320 1+300 -280 From the result of the mass diagram, answer the following: v in m What is the mass ordinate at station 1+060? ( Select 1 v in m What is the mass ordinate at station 1+2602 I Select 1 m3 What is the free haul volume if one of the station limits of FHD is at 1+100? (Select m3 What is the volume of waste if the station limits of LEH is at 1+040? ( Select) What is the volumc of overhaul if the station limits of FHD and LEH (left side) are at 1+100 and 1+040 respectively? Select Which is a characteristic of the mass diagram? Select] What is the accumulation of volume? 1Select 1
Just choose the correct answer The total volume of concrete slab (m3) 1.4 2.6.5 3.7 4.8 the total weight of concrete slab(kg) 1.12000 2.9560 3.101164 4.11468 the weight of sand in stock condition 1.2890.867kg 2.3560.435kg 3.2099.898kg 4.2530.751kg The weight of water after adjustment (Kg) 1.638.717 2.938.717 3.738.717 4.838.717
11.8 For a mean annual air temperature of 45°F and a normal modulus of 22,500 psi, determine the effective roadbed soil resilient modulus for the monthly moduli shown in Table 11.10 [Answer: 22,200 psi] TABLE 11.10 Subgrade Modulus Used in the DAMA Program modulus Subgrade modulus by month (10 psi) Normal MAAT (psi) Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 45°F 4500 4.5 27.3 50.0 1.62 2.34 3.06 3.78 4.5 4.5 0.9 6.0 12,000 12.0 31.0 50.0 7,20 8.40 9.60 10.8 12.0 12.0 (7°C) 22,500 22.5 36.3 50.0 15.8 17.1 18.5 19.8 21.2 22.5 22.5 60°F 4500 4.5 27.3 1.35 2.14 3.71 4.5 4.5 4.5 12,000 12.0 31.0 7.2 8.4 10.8 12.0 12.0 12.0 (15.5°C) 22,500 22.5 38.3 18.0 19.1 21.4 22.5 22.5 22.5 - Note. 1 psi 6.9 kPa. Source. After AI (1982). 15.9 21.5 29.4 4.5 12.0 22.5 38.7 40.5 43.1 50.0 50.0 50.0 2.93 9.6 20.3 4.5 12.0 22.5
The following data is the result in performing the ASTM C128, Determine the Apparent Specific Gravity Mass of Pycnometer Mass of pycnometer filled with water 250.00 1,160.00 Mass of SSD sample 900.00 Mass specimen and water Mass of oven-dried sample of pycnometer with 1,724.00 895.00 A None of the above B) 2.66 C) 2.70 D) 2.68