2.4 The following are the results of a sieve analysis.2.1 For a gravel with Dg = 0.48 mm, D = 0.25 mm, and Dn = 0.11 mm, calculatethe uniformity coefficient and the coefficient of gradation. Is it a well-gradedor a poorly graded soil?2.2 The following values for a sand are given: Dn = 0.3 mm, D = 0.41 mm,and D = 0.77 mm. Determine C, and C, and state if it is a well-graded or apoorly-graded soil.U.S.sieve no.Mass of soilretained (g)4.1018.5205324090.56081810092.2200585Pan26.5a. Determine the percent finer than cach sieve and plot a grain-size distri-bution curve.b. Determine Dg. Dy. and D, for each soil.. Calculate the uniformity coefficient Cd. Calculate the coefficient of gradation C,.

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Answered: 2.1 For a gravel with D = 0.48 mm, D30…

2.1 For a gravel with D = 0.48 mm, D30 = 0.25 mm, and D10 = 0.11 mm, calculate the uniformity coefficient and the coefficient of gradation. Is it a well-graded or a poorly graded soil?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

2.4 The following are the results of a sieve analysis.
2.1 For a gravel with Dg = 0.48 mm, D = 0.25 mm, and Dn = 0.11 mm, calculate
the uniformity coefficient and the coefficient of gradation. Is it a well-graded
or a poorly graded soil?
2.2 The following values for a sand are given: Dn = 0.3 mm, D = 0.41 mm,
and D = 0.77 mm. Determine C, and C, and state if it is a well-graded or a
poorly-graded soil.
U.S.
sieve no.
Mass of soil
retained (g)
4.
10
18.5
20
532
40
90.5
60
818
100
92.2
200
585
Pan
26.5
a. Determine the percent finer than cach sieve and plot a grain-size distri-
bution curve.
b. Determine Dg. Dy. and D, for each soil.
. Calculate the uniformity coefficient C
d. Calculate the coefficient of gradation C,.

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Answer Choices: A) Cl B) ML C) CH D) MH
4. Classify the soil according to AASHTO. Describe the steps. Percent passing sieve No. 10, F₁0 = 80% Percent passing sieve No. 40, F40 = 60% Percent passing sieve No. 200, F200 = 40% Liquid limit, WLL = 33.1% Plastic limit, WPL = 24.9% Plasticity index, PI = 8.2%
Write each criterion that is satisfied for each classification. For the given data of soil A and B, DETERMINE THE FF AND SHOW COMPLETE SOLUTION. 1. Classify soil A using AASHTO method. 2. Classify soil B using USCS method. SIZE (MM) A B 4.75 100 100 2.36 97 100 2.00 92 98 0.850 87 92 0.425 59 88 0.180 42 79 0.150 26 70.1 0.075 20 61 No. 40 Fraction Characteristics LL 32 46 PL 20 24
Given the following soil properties of a road grading works. Moist unit weight = 19000 N/m³ Moisture Content = 12% Specific Gravity of soil solids = 2.66 Void ratio at its densest state = 0.44 Void ratio at its loosest state = 0.62 Determine the dry unit weight of the soil. Determine the in-situ void ratio of the soil. Determine the relative density of the soil
Given the following SPT result, determine the N-value and the soil’s relative density (No correction due to the effective overburden pressure is required). Cumulative Depth (in.) Number of Blows 6 5 12 6 18 7 Which of the following is incorrect regarding the Soil Classification Systems?a. The AASHTO Soil Classification System is commonly used in highway design and construction b. In the USCS, SP stands for Poorly Graded Sandc. Both AASHTO and USCS, percent passing #200 sieve is a crucial piece of informationd. Percent passing #4 sieve is required in order to use the AASHTO system
Answer 4.8
4. Determine the USCS designation and soil description of a soil sample given the following sieve analysis test results: D10 = 0.2 mm = D30 0.73 mm D60 3.35 mm % passing #4 = 77.5 % passing #200 = 9.5 The fines are silty.
From the particle size distribution curve, about 61% of the oil is finer than 0.074 mm in diameter. The liquid limit and plastic limit of minus No 40 fraction of the soils are as follows: LL =26, PL= 20. Classify the soil using the USCS.a. CL-MLb. CL-MLc. SP-SCd. CH
3. please answer correctly and show the solution
Question 10 Classify the following soils using the Unified soil classification system. Give the group symbol. No. 4 = 99 No. 200 = 76 LL = = 60 PL = 32 А) СH В CL OH MH
Question 12 Classify the following soils using the Unified soil classification system. Give the group symbol. No. 4 = 100 No. 200 = 45 LL = 36 PL = 22 A) SC B SP SM GC
No.3