Soil mecha - Study guides, Class notes & Summaries

soil CORRECT ANSWER the uncemented aggregate of mineral grains and decayed organic matter (solid particles) with liquid and gas in the empty spaces between the solid particles mechanics CORRECT ANSWER branch of physics dealing with force and motion soil mechanics CORRECT ANSWER engineering science that deals with the study of the physical properties of soil masses subjected to different forces weathering CORRECT ANSWER, the process of breaking down rocks by mechanical and chemical proce...

Soil Mechanics Final 100% accurate answers What is the sieve number that is used to separate fine sand from medium sand? 40 What is the grain size diameter (in mm) that is the dividing line between fines and sand particles sizes? 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 False. The diffuse double layer is the region of attracted positive ions i...

Porosity CORRECT ANSWER Is defined as the ratio of the volume of voids to the total volume Degree of Saturation CORRECT ANSWER Is defined as the ratio of the volume of water to the volume of voids Moisture Content CORRECT ANSWER Is also referred to as water content and is defined as the ratio of the weight of water to the weight of solids in a given volume of soil Unit Weight CORRECT ANSWER Is the weight of soil per unit volume Dry Unit Weight CORRECT ANSWER The weight per unit volum...

What happens during fill operations? CORRECT ANSWER When fill operations are taking place the new soils are usually compacted in place to improve the strength characteristics. What is compaction CORRECT ANSWER Compaction in general terms is the densification of soil by the reduction in voids (mainly air) by mechanical means. How do you define degree of compaction? CORRECT ANSWER the dry unit weight Describe the dry unit weight CORRECT ANSWER -> It increases with compaction -> I...

Add Blow Counts 2 and 3 CORRECT ANSWER The Soil Report discusses the Penetration Resistance "N" Blow Count Summation procedure. What is the correct summation procedure? a 140-pound hammer falling 30 inches CORRECT ANSWER What type of hammer and fall distance was utilized for sampling the soil borings? Contractor CORRECT ANSWER Which party is responsible for comparing the soil borings to the standard Relative Density and Consistency Table provided in the Soil Report? Blows per foot CO...

Department of Civil Engineering CE 42- SOIL MECHANICS

What is a settlement? CORRECT ANSWER a displacement caused by a change in stress What is the symbol for settlement? CORRECT ANSWER δ What are the three different types of settlements? CORRECT ANSWER -> Distortion -> Consolidation -> Secondary Settlement What is the equation for total settlement? CORRECT ANSWER δ = δd + δc + δs δ-> Total Settlement δd-> Distortion Settlement δc-> Consolidation Settlement δs-> Secondary Settlement What is Distortio...

True CORRECT ANSWER T/F: Hydraulic gradient, i, is defined as the energy or head loss, h, per unit length, l. True CORRECT ANSWER T/F: Seepage velocity, the actual velocity of the water flowing in the voids, is greater than the discharge, or superficial, velocity and is related by porosity. Degree of Soil Saturation Void Ratio Grain size distribution Pore size distribution CORRECT ANSWER Hydraulic conductivity, or permeability, depends on the following: False CORRECT ANSWER T/F: Ther...

Principles of Soil Mechanics questions and answer A+ content 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 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) tr...