IN  ANSWERING  QUESTIONS  13-39  THROUGH 13-42,    REFER TO FIGURE 13-B. 13-39. What percentage of the material tested passed the No. 40 sieve? 1. 17.9% 2. 11.3% 3. 10.2% 4. 2.7% 13-40. What is the percentage of error in 13-41. 13-42. 13-43. the  soil  sample? 1. 1.5% 2. 1.4% 3. 0.15% 4. 0.14% The soil sample predominantly consists  of  what  type  of  material? 1. Cobbles 2. Gravel 3. Sand 4. Fines What  is  the  percentage  of contained  in  the  sample? 1. 48.3% 2. 51.7% 3. 62.5% 4. 88.7% gravels A sieve analysis data sheet shows that the original weight of a test sample  exceeds  the  total  weight  of fractions, resulting  in  a percentage error that is smaller than  the  maximum  permissible error. Which of the following actions  should  you  take? 1. Disregard the value of the error 2. Rerun  the  test 3. Add the value of the error to the largest amount retained by any  sieve 4. Add the value of the error to the smallest amount retained by any sieve 13-44. When is it necessary to prewash a sample before proceeding with a normal  dry  sieve  analysis? 1. When the sample contains a surplus  of  superfine  materials 2. When the sample has an undesirable water content 3. When the sample is too dry 4. When the sample contains too little  superfine  materials 13-45. 13-46. During a sieve analysis, 2% of the material passed the No. 200 sieve. What subsequent test, if any, should you perform on the sample to  determine  this  soil’s susceptibility  to  frost? 1. Hydroscopic moisture content 2. Hydrometer analysis 3. Specific gravity 4. None After a sieve analysis has been performed,    which of the following materials should be tested for specific  gravity  of  solids? 1. Only those larger than the No. 40 sieve 2. Only those retained on the No.    4 sieve 3. Only those passing the No. 4 sieve 4. Materials  passing  the  No. sieve 200 Figure  13C IN  ANSWERING  QUESTIONS  13-47  AND  13-48, REFER TO THE DATA IN FIGURE 13C. 13-47. Find the specific gravity of solids. 1. 2.67 2. 2.69 3. 2.71 4. 2.73 13-48. Find the composite specific gravity. 1. 2.42 2. 2.52 3. 2.62 4. 2.64 93