Select the correct answer(s) to the statement, "disturbed soil samples cannot be used for"Select one:a. classificationb. stress history and soil compressibilityc. grain-size analysisO d. specific gravity of soil solidsWhich of the folowing approaches to field investigation provides rapid, cost-effective sitecharacterization with continuous soil profiling?Select one:a. Drilling soil borings and sampling soils using thin-walled (Shelby) tubes and standardpenetration tests (SPTS).O b. Performing electric cone penetrometer test (CPT) soundings.

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Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.1P

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Since laboratory or field experiments are generally expensive and time consuming, geotechnical engineers often have to rely on empirical relationships to predict design parameters. Section 6.6 presents such relationships for predicting optimum moisture content and maximum dry unit weight. Let us use some of these equations and compare our results with known experimental data. The following table presents the results from laboratory compaction tests conducted on a wide range of fine-grained soils using various compactive efforts (E). Based on the soil data given in the table, determine the optimum moisture content and maximum dry unit weight using the empirical relationships presented in Section 6.6. a. Use the Osman et al. (2008) method [Eqs. (6.15) through (6.18)]. b. Use the Gurtug and Sridharan (2004) method [Eqs. (6.13) and (6.14)]. c. Use the Matteo et al. (2009) method [Eqs. (6.19) and (6.20)]. d. Plot the calculated wopt against the experimental wopt, and the calculated d(max) with the experimental d(max). Draw a 45 line of equality on each plot. e. Comment on the predictive capabilities of various methods. What can you say about the inherent nature of empirical models?
FROM THE GIVEN DATA, SHOWS A SIEVE ANALYSIS OF SOIL SAMPLES A, B, AND C. (PLEASE HEEEEEEELP!!!!) A.) Classify the soil sample A using USCS Method. B.) Classify the soil sample B using USCS Method. C.) Classify the soil sample C using USCS Method.
-In this site, SPT test has been used to calculate the properties of soil layers. Mention two other methods that could be used to calculate soil properties and explore two advantages for each method.
One of the most widely known and used soil samplers is the standard split spoon. How?
True or False? If I am assigned to sample soil for testing, I need to collect samples always at two different depths
From the given data determine these soil properties and analyse the results, how important are these test data and how can they be integrated within geotechnical design procedures. - If a soil sample tested in a direct shear box of 60 mm by 60 mm and the maximum readings for normal loads of 0.3, 0.5 and 1.0kN were 202, 265 and 511 kN, determine the strength parameters corresponding to effective stress.
Discuss the importance of grain size analysis tests in soils? What is the practical applications of performing grain size analysis in engineering practice? Why do we need to use oven dried soil samples in grain size analysis test?
Penetration tests have been correlated with soil strength and foundation-bearing capacity, but other field procedures, such as those that measure soil resistance to deformation at the in-place location, are theoretically capable of yielding detail about soil properties. What are the two types of field tests in this category?
Help me answer the problem question and write it on paper with a complete solution and box the final answer with their unit. Thank you again. Take note: I attach a photo of AASHTO Classification System just an additional guide only to classify soil sample A and B. Thank you.
From the given data, shows a sieve analysis of soil samples A, B and C. Classify the soil sample A using USCS method (Group Symbol only), D60=2.3, D10 = 0.17, D30 = 0.70 Classify the soil sample B using AASHTO method Classify the soil sample C using the AASHTO method
Why is the hydrometer method commonly used to obtain data on the sizes of silt and clay particles in soil samples, and not the sieve method?
Q1: Explain the procedure for hydrometer analysis. Use online sources for detail descriptive study of the process. Hints: Search for the answers of these questions in particular. · For what type of soil hydrometer analysis is used. · Credibility of the results obtained from hydrometer analysis. · Precautions and limitations of the test. Q2: Explain the given table. Hints: · Explain the terms given in the table. · Explain the use of this table in hydrometer analysis.

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