Q5: A 50m *30m site has 1 m thick layer of organic soil, to be replaced with granular fill (Gs=2.6) with 21%fines and 31% oversized particles (Gos= 2.60 and wsSD = 1.9%). The site is prepared for 10-story buildingwith a parking lot. Standard Proctor tests are performed on the fill material without oversized particles,and the test results are shown below.Yd.Compaction testMoisture content (%)Wet unit weight (kN/m³)8.81610.618.112.719.414.718.716.616.91) What are the key performance parameters?2) Determine the parameters needed for field compaction.3) If the average productivity of a single compactor is 30 m³/hr, how many days are need to finish thecompaction work, assuming 8 working hours per day?

The proctor compaction test is the test carried out on the soil samples to arrive the maximum dry…

Q5: A 50m *30m site has 1 m thick layer of organic soil, to be replaced with granular fill (G=2.6) with 21% fines and 31% oversized particles (Gos= 2.60 and wsSD = 1.9%). The site is prepared for 10-story building with a parking lot. Standard Proctor tests are performed on the fill material without oversized particles, and the test results are shown below. Yd. za Compaction test

Q5: A 50m *30m site has 1 m thick layer of organic soil, to be replaced with granular fill (G=2.6) with 21% fines and 31% oversized particles (Gos= 2.60 and wsSD = 1.9%). The site is prepared for 10-story building with a parking lot. Standard Proctor tests are performed on the fill material without oversized particles, and the test results are shown below. Yd. za Compaction test

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 4.9P

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Similar questions

A field density test has been conducted in a compacted fill that is currently under construction.The test results indicate a relative compaction of 101-103%, which made the constructionmanager believe the test must be incorrect. He believes it is impossible for the dry unit weightinthe field to be greater than the maximum dry unit weight from the Proctor compaction test.Explain why the relative compaction in the field could indeedbe greater than 100%.
4. Phase Diagram A soil sample was obtained at the underground parking garage that Dr. Barry is constructing at his home with a volume (VT) of 0.05 ft', total weight (WT) of 4.2 lbs, weight of water (Ww) of 0.37 lbs and a specific gravity (Gs) 2.70. Draw a complete phase diagram and determine the void ratio (e), moist unit weight (y), saturated unit weight (ysat), dry unit weight (Yary), weight of the solids (W.), volume occupied by the solids (V.), volume occupied by the water (V), volume occupied by the air (VA). volume of the voids (Vv), porosity (n), moisture content (w), and percent saturation (S). Use English units in your solution. Show all of your work.
Read the question carefully and give me both a&b right solutions. A proctor compaction test in the laboratory on a borrow pit soil gives maximum unit weight of 19 kN/m3 and optimum water content of 11.5%. The bulk unit weight and water content of the soil in the borrow pit are 17.2 kN/m3 and 8.2%, respectively. A highway fill is to be constructed using this soil. The specifications require the fill to be compacted to 95% Proctor compaction. (a) What is the additional weight of water per unit volume required to bring the moisture content to the optimum value to achieve 95% Proctor compaction? (b) How many truckloads of borrow pit soil will be required for a 100,000 m3 highway embankment - assuming each truck has a capacity of 10 m3 ?
1. Classify the following soil to be used as a highway subgrade material using AASHTO method. Sieve Analysis % Finer No. 10 sieve = 88% No. 40 sieve = 75% No. 200 sieve = 34 % Plasticity for fraction passing No.4 Liquid Limit = 39% Plasticity Index = 12% %3D
Your company has won a contract to provide and compact the fill material for an earth levee, with the dimensions shown below. The levee fill is a silty clay soil to be compacted to at least 95% of maximum Standard Proctor of ya = 106 pcf at an OMC of 18%. Your borrow pit has a silty clay with an in-situ moist density of 112.1 pcf at 18%, and a G, = 2.68. When the soil is excavated and loaded on to your trucks, the voids ratio of the material is e = 1.47. Your trucks can haul 15 cubic yards of material per trip. (26) Determine the volume of fill required for the levee; (27) Determine the volume required from the borrow pit; (28) Determine the required number of truckloads. 40* 20 -20 20 450 60' 3:1
The total density of sand in an embankment was found to be 1900kg/m^3 and the field water content was 12% . In the laboratory, the density of the solid was found to be 2660 kg.m^3, and the maximum and minimum voids ratio were 0.63 and 0.44, respectively What is the void ratio of the sand? Calculate the relative density of the sand in the field:
Calculate % Clay using the following values; a. Weight of soil= 50 g b. HR reading at 40 sec.= 25 c. Temp at 40 sec= 25 oC d. HR at 2 hrs= 16 e. Temp at 2 hrs= 26
A field permeability test indicates that the coefficient of permeability for a certain soil is 2 * 10-2 mm>sec. Is this a relatively high or low coefficient of permeability? What type of soil would this probably be?
4. Specifications require that a fill using borrow soil to be compacted at 95% of its standard proctor maximum dry density. Tests indicate that this maxi- mum is 19.5 kilo Newtons per cubic meter with 12 % moisture. The borrow material has a void ratio of 0.60. Compute the minimum dry and wet unit weight of the compacted soil, compute also the minimum volume of borrow material required to fill 1 cubic meter when compacted. Note: Assume a logical value of Gs with at least 4 significant figures.
A synthetic soil is made by mixing: 400 plastic spheres with Gs = 0.8 and diameter = 5mm, and 250 glass spheres with Gs = 2.65 and diameter = 4mm. %3D %3D According to the USCS, would the synthetic soil classify as a sand or as a gravel? Show work to support your answer.
A compacted fill, currently under construction, will support a proposed supermarket. One of the field density tests in this fill gave a unit weight of 121 lb/ft³ and a moisture content of 12.5%. A series of modified Proctor tests have also been performed on the fill soils per ASTM D1557, and they gave a maximum dry unit weight of 117 lb/ft³ and an optimum moisture content of 13.0%. Compute the relative compaction based on the modified Proctor test and determine whether or not it satisfies the normal compaction specification for such a project.
yd (Gs/1+ e) yw 2. Determining soil characteristics using the three-phase principle, the moisture content of a specimen of soil is 26 percent, and the bulk density is 116 gm/m. if the specific gravity of the particles is 2.76, determine the void ratio and the degree of saturation.