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ASSIGNMENT QUESTIONS - 14069_760
ASSIGNMENT QUESTIONS - 14069_762

Engineering Aid 3 - Beginning Structural engineering guide book
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3-13. 13-14. 13-15. 13-16. 13-17. In which of the following ways can water enter a layer of soil mass? 1. By  gravitational  pull 2. By capillary action 3. By absorption 4. Each of the above When soil is subjected to loading, what soil property has the greatest  effect  upon  its  behavior? 1. Specific gravity 2. Moisture content 3. Gradation 4. Plastic  and  liquid  limits Which of the following descriptions best defines the term “hygroscopic  moisture”?  (Hint: Your textbook contains a glossary.  ) 1. Soil  water  absorbed  by  the atmosphere 2. Absorbed moisture in soil at any time 3. Adsorbed moisture in air-dried soil 4. Thin films of water that freely  move  through  soil The term   “moisture  content”  refers to  which  of  the  following  factors? 1. The amount of free water in a soil  sample 2. The  proportion  of  the  weight of water to the weight of wet soil  expressed  as  a  percentage 3. The  amount  of  hydroscopic moisture in a soil sample 4. The  proportion  of  the  weight of water to the weight of dry soil  expressed  as  a  percentage Which  of  the  following  properties of  a  fine-grained  soil  permits clay to be rolled into thin threads  at  a  certain  moisture content  without  crumbling? 1. Liquidity 2. Plasticity 3. Cohesiveness 4. Consistency IN  ANSWERING  QUESTIONS  13-18  THROUGH 13-20,    SELECT THE TERM THE THAT BEST MATCHES  THE  DESCRIPTION  LISTED. 13-18. The  boundary  in  moisture  content between the solid and semisolid state of the soil. 1.  A 2.   B 3.   C 4.   D 13-19. The moisture content corresponding 13-20. 13-21. 13-22. 13-23. to  the  arbitrary  limit  between  the liquid  and  plastic  states  of consistency of a soil. 1.   A 2.   B 3.   C 4.   D The moisture content at the arbitrary limit between the plastic and semisolid state of a soil  . 1.  A 2.   B 3.   C 4.   D Which of the following constructions  would  be  least affected  by  soil  moisture? 1. An asphaltic-cement road laid on a sand-clay admixture 2. A concrete building foundation laid on a base of fine-grained soil 3. A concrete building foundation laid on a gravel base 4. An asphaltic-cement runway laid on a gravel-clay admixture In  the  Unified  Soil  Classification System, what category of soil is identified  by  the  presence  of large  amounts  of  organic  material? 1. Coarse  grained 2. Fine  grained 3. Peat 4. Sand When less than half of the coarse portion of a soil sample is retained on a No. 4 sieve, the sample  is  classified  as  what  type of soil? 1. Sand 2. Gravel 3. Silt 4. Clay 89







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