Soil mecha - Study guides, Class notes & Summaries

Soil Mechanics Exam 2 Questions and Answers

CE 487 (Soil Mechanics) Exam 3 Questions and Answers

Q1.1: What is the sieve number that is used to separate fine sand from medium sand? CORRECT ANSWER #40 Q1.2: What is the grain size diameter (in mm) that is the dividing line between fines and sand particles? CORRECT ANSWER 0.075mm Q1.5: Mass of wet soil and can before oven = 74.8g Mass of dry soil and can after drying = 61.3g Mass of empty can = 31.2g What is the water content of the soil? CORRECT ANSWER (74.8 - 61.3) / (61.3 - 31.2) = 44.85% Q1.7-9: Use attached grain size graph ...

What is the sieve number that is used to separate fine sand from medium sand? CORRECT ANSWER 40 What is the grain size diameter (in mm) that is the dividing line between fines and sand particles sizes? CORRECT ANSWER 0.075 TF: The diffuse double layer is the basic structure of each clay particle, and these clay particle diffuse double layers are the 2 different mineral sheets bonded together CORRECT ANSWER False. The diffuse double layer is the region of attracted positive ions in solution...

What is the definition of Shear Strength CORRECT ANSWER The largest stress a soil can take without failure (the greatest stress the material can sustain) What is the definition of shear CORRECT ANSWER The failure mode due to the compressive forces What are the two design criteria that must be satisfied CORRECT ANSWER Ultimate Strength must be large enough so FS = 1 (in reality FS should be greater than 1) Serviceability limit, usually less than 1" of settlement Is having a FS of 0....

Unsaturated Soil Mechanics in Geotechnical Practice Questions & Answers What is the Definition of Phase? 1) Must have different Material Properties 2) Must have Definite Boundary Surface What size of soil grain is the limit that differs it from course grained and fine grained soil? 0.075 mm 0:35 / 1:27 5 Sanity-Saving Tips for Arguing on the Internet Define State Variable (give 2 examples) The non material variables required for the characterization of the system (e.g., ...

A clay soil has a liquid limit of 60%, a plastic Limit of 20% and a natural, in situ water content of 25%, The clay in the natural, in situ state would likely: a) be normally consolidated b) have a high compressibility c) have a stiff consistency d) have a soft consistency CORRECT ANSWER have a stiff consistency An Aeolian soil is a soil which is formed by: a) deposition of soil particles along or a base of a slope by gravity b) transportation and deposition of soil particles by win...

What does soil classification systems provide to geotechnical engineers? CORRECT ANSWER Soil classification systems provide a common language to express general characteristics of soil What are most soil classification systems based off? CORRECT ANSWER index properties such as particle size and Atterberg Limits. What type of soil classification systems is AASHTO? CORRECT ANSWER Engineering behavior classification What type of soil classification systems is USCS? CORRECT ANSWER Engineeri...

Soil Mechanics: Exam 1, Soil Mechanics Exam 2 100% correct answers Compaction quick, driving out air and water, under the dynamic loads Soil is a three-phase system consisting of what phases? 1. clay, silt, sand 2. solids, voids, water 3. water, solids, air 3. water, solids, air Void ratio is: 1. ratio of the volume of the voids to the total volume 2. ratio of the volume of the voids to the volume of the solids 3. ratio of the volume of water to the volume of the voi...

SOIL MECHANICS TEST WITH GUARANTEED ACCURATE ANSWERS Darcy's Equation - ACCURATE ANSWERUsed to calculate the volume of water flowing through soil per unit time Flow Nets - ACCURATE ANSWER- Graphically show the total head or energy lost if water flows through a porous media - Graphical solution of Laplace equation Laplace Equation - ACCURATE ANSWERRepresents the energy loss (total head loss) through any resistive media (i.e. soil) Flow Net Grids - ACCURATE ANSWERHave: - Flow lines ...