Use the obtained (Described in the Table below) from the laboratory and site effort for subgrad compaction layers to determine thedegree of compaction by conducting sand replacement test: Table: Result of sand replacement test 1.262 Bulk density of sand ,gm/cm Weight of wet soil sample from the hole, gm. Water Content in the field % 3724 7.5

Use the obtained (Described in the Table below) from the laboratory and site effort for subgrad compaction layers to determine thedegree of compaction by conducting sand replacement test: Table: Result of sand replacement test 1.262 Bulk density of sand ,gm/cm Weight of wet soil sample from the hole, gm. Water Content in the field % 3724 7.5

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.8P

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ASTM D1556: Standard test method for density and unit weight of soil in place by the sand cone method
4.2 For a field test the technician is using a sand with a density of 96.7 pcf in his sand cone test. Calculate the dry density, degree of saturation and moisture content of a compacted fill using the following data that the technician collected: Weight of sand cone bottle before test (full of sand): Final weight of sand cone (some sand remains): Weight of sand needed to fill cone: Weight of fill soil excavated from hole + bucket: Weight of bucket used to collect fill soil: 15.14 Ibs 3.97 Ibs 2.67 Ibs 12.37 Ibs 0.76 Ibs Moisture content of fill soil: Empty can: 48.1 g Can + moist soil: 253.7 g Can + dry soil: 237.1 g
Please answer parts d-f
Ciectical Cnyineers GToup as Cv= 40.32% The following data represent the results obtained from the specific gravity (S.G.) test performed ina soil laboratory including * ?for sand samples. Find the mode Number of Specific Gravity 2.30-2.39 Samples 2.40-2.49 4 2.50-2.59 6. 12 2.60-2.69 2.70-2.79 14 2.80-2.89 3.35-3.40 2.10-2.15 2.20-2.25 2.70-2.75 2.80-2.85 2.30-2.35 2,60-2.65 2.40-2,45 2.50-2.55 2.90-2.95 ارفع اجابتك بشكل ملف wdf او صورة 1O 0O O O O O O
Answer 4.9
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• Problem 4- A soil sample from a certain excavation has the following grain size characteristics; Sieve size (mm) 2.00 0.075 0.500 0.005 0.002 % Finer 100 80 64 35 20 The group index of the soil was 17 and has a plasticity index of 24. Determine the liquid limit of the soil. GI = (F-35) [0.2 +0.005(LL-40)] +0.01 (F-15) (P.I. - 10)
Refer to the laboratory compaction plot in problem 3. On the same OMC chart, plot and assess each of the field data given in the table below considering that: a. yd must be at least 0.95 ya (max) b. Moisture content, w, should be within 2% of wopt MOISTURE DRY UNIT LOCATION CONTENT % WEIGHT kN/m3 A 10 14 12 18 14 16 D 16 14
The table below shows the results of CU test for a soil sample (h=76 mm, and D= 38 mm), Find the X value, if you know the decrease in VO=2.5 % in consolidation stage. Shearing stage (ho=75 mm) Axial dial gauge reading (F=0.01 mm/div.) Corrected area mm 30 75 120 no one O 1133 mm2 1105 mm2 O 1110 mm2 O 1176 mm2
The results of a standard Proctor test are given in the following table. Determine the maximum dry unit weight of compaction and the optimum moisture content. Also determine the moisture content required to achieve 95% of γd(max). Calculate and plot the 80% and 100% saturation lines.