Q2- B: Soil has been compacted in an embankment at a bulk unit weight of 21.1kN/m² and water content 12%, the solid particles of soil having specific gravity of 2.65. Answer only one of the following below: 1- Calculate the dry unit weight, degree of saturation, and air content. 2- Would it possible to compact the above soil at a water content of 13.5% to a dry unit weight of 21kN/

Q2- B: Soil has been compacted in an embankment at a bulk unit weight of 21.1kN/m² and water content 12%, the solid particles of soil having specific gravity of 2.65. Answer only one of the following below: 1- Calculate the dry unit weight, degree of saturation, and air content. 2- Would it possible to compact the above soil at a water content of 13.5% to a dry unit weight of 21kN/

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.4P

See similar textbooks

Similar questions

For the permeability test arrangement shown in Figure Qu2b, the cross-section area of the soil is 4000 mm? and the evaluated permeability of the soil is 4.0 mm/sec. With reference to Darcy's law, what is the volume of water discharged in 20 minutes in this set up? Flow Overflow 375mm Discharge -15mn 225mm Soil 150mm 300mm Figure Qu2b
Using Unified Soil Classification System, determine the following: (a) Coefficient of Gradation (b) Group Symbol. Passing No. 4 = 47 % Passing No. 200 = 10 % D10 = 3.45 mm %3! D30 = 6.29 mm De0 = 13.72 mm Plasticity for the minus No. 40 fraction: Liquid Limit = 28 % Plastic Limit = 17 % O GC-GM GP-GC O GC O Coef. Of Gradation = 0.84 O GP O Coef. Of Gradation = 3.97
Problem The saturated soil specimen shown below has a permeability of 0.005 cm/sec, a porosity of 38%, and a cross-sectional area of 22 cm². Two standpipes are placed at points A and B as shown below. The specimen has reached a steady state condition after flushing it with water for 1 hr. Datum ttttt h₁ = 100 cm 50 cm L = 50 cm B 40 cm h₂ = 80 cm Determine: 1. 2. Elevation head (in cm) at points A and B. Pore water pressure (in kPa) at points A and B. 3. Discharge velocity (in cm/sec) through the sample. 4. 5. What is the quantity of flow through the sample in cm³/day? What is the magnitude of the seepage velocity (in cm/sec)? OUT
Using AASHTO Classification System, determine the following: (a) Group Index (b) Soil Classification Passing No. 10 = 55 % Passing No. 40 = 47 % Passing No. 200 = 23 % Plasticity for the minus No. 40 fraction: Liquid Limit = 22 % Plastic Limit = 17 % O GI = - 0.40 say 0 O GI = 0.60 say 1 O GI = 0 O A-2-4 (1) O A-2-7 (0) O A-1-b (0) O A-2-6 (1)
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 ?
Subject: Soil Mechanics A. Classify the Soil Using USCS (with explanation/ justification) Given data: D10 = ? D30= 0.0023mm D60= 0.032mm Liquid Limit= 49% Plastic Limit= 24% CHOICES: a. CL (lean clay with gravel) b. CL ( lean clay with sand) c. ML (silt with gravel) d. ML (Silt with sand)
Q.1.A A soil specimen have void ratio (e) of 0.7, Gs 2.72. Calculate the total unit weight, dry unit weight, and water content at degree of saturation equals 75%. B. Classify the following soil using the USCS. Finer (%) 100 90 60 30 19 4 Sieve No. 4 No. 25 No. 50 No. 100 No. 200 12.5 mm (Diameter) (4.7 mm) (0.7 mm) (0.3 mm) (0.15 mm) (0.075 mm)
Your company has won a contract to provide and compact the fill material for an earth levee (an embankment built to prevent overflow of a river), with the dimensions shown below. The levee fill is a silty clay soil to be compacted to atleast 95.1% of maximum standard Proctor of dry unit weight= 109lb/cu.ft at an OMC of 18.6%. Your borrow pit has a silty clay with an in-situ moist density of 112.6lb/cu.ft at 18.1% water content and a Gs = 2.679. When the soil is excavated and loaded on to your trucks, the void ratio of the material is e = 1.46. Your trucks can haul 401 cu.ft of material per trip. DETERMINE THE FF AND SHOW COMPELETE SOLUTION. ALL FINAL ANSWER WILL BE IN 3 DECIMAL PLACES. 1. Determine the volume of fill required for the levee in cu.ft 2. Determine the volume required from the borrow pit in cu.ft 3. Determine the required number of truck loads.
2. Prove n-e/(1+e) and e-n/(1-n) based on definitions of void ratio and porosity. 3. Classify the following soils according to the unified soil classification system: group symbols and typical names Soil A B Percent passing U.S. sieve No. 4 No. 10 No. 20 No. 40 No. 60 No. 100 No. 200 95 86 65 52 46 38 25 98 95 88 82 75 65 100 LL PL 38 65 22 58
Q1: A. Answer in True or False 1. A soil has a Cu =1, then it is considered as a poorly graded soll. 2. A soil has L.L-60% and P.L-35%, then it plots a point below the A-line in the plasticity car 3. A soil described with a symbol (SP) has % passing No. 200 sieve more than 50% 4. Decreasing water content below shrinkage limit is accompanied with a decreasing in void ra 5. Water molecules are considered polar and known as dipoles. 6. Dry Density is the smallest density. 7. Capillary rise is directly proportional to the pore channel diameter. 8. The unconfined compressive strength is twice the undrained cohesion. 9. Piping or boiling occurs when effective stress equals to zero. 10. It is assumed that the secondary compression begins when the primary conso
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?
PROBLEM 3: A saturated, remolded clay soil has a water content of 32 percent, a liquid limit water content of 35 percent, a plastic limit water content of 20 percent, and an amount of clay sizes (finer than 0.002 mm) of 17 percent. What is the liquidity index of this soil? a. 0.6 C. 0.25 b. 0.8 d. 0.96