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ASSIGNMENT QUESTIONS - 14070_507
ASSIGNMENT QUESTIONS - 14070_509

Engineering Aid 1 - Advanced Structural engineering guide book
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2-40. 2-35. 2-36. 2-37. 2-38. 2-39. Learning  Objective:  Identify the purpose, methods, and requirements of geological and pedological   surveys. The purpose of a geological survey is to obtain which of the following data? 1. 2. 3. 4. To locate rock formations in the field and determine their physical characteristics To determine rock age and distribution To determine the types of rocks and their mineral content All of the above How can a geologist determine the approximate age of a rock formation? 1. By examining the sequence of  rock  units 2. From data obtained by seismic surveys 3. By the presence of certain organic   particles 4. From data obtained by nuclear density  surveys Which of the following survey methods might a geologist use in plotting features on a field map? 1. Reference an outcrop to a  relief  feature 2. Reference an outcrop by establishing direction with a compass 3. Measure the difference in elevation with an altimeter 4. Each of the above The surveyor supports the geologist by performing which of the following  tasks? 1. By  examining  the  borehole samples 2. By  plotting  the  results of  the  geological  surveys 3. By preparing the basic topographic  map 4. Both 2 and 3 above To  establish  your  base  direction, you should take which of the following  steps? 1. Perform a triangulation survey 2. Run  a  control  traverse 3. Begin from an established monument 4. Use an established base line from  a  triangulation  net 2-41. 2-42. 2-43. 2-44. 2-45. 2-46. 2-47. Distance measurements should be obtained as accurately as possible for a base map survey. 1. True 2. False Measurements made by stadia during a geological survey must be accurate to 1 part in 1. 200 2. 300 3. 500 4. 1,000 What is the maximum allowable error in elevation when plotting data for a  geological  map? 1. One half of the contour interval 2. One contour interval 3. Two contour intervals 4. 25 feet Horizontal angles, other than traverse angles, that are plotted on a geological topography map should be read to the nearest 1. 1 minute 2. 15  minutes 3. 30  minutes 4. 1 degree Aerial photographs may be used in place of a base map that will be used  for  engineering  purposes. 1. True 2. False Which of the following topographic features are more clearly shown on aerial photographic maps? 1. Intermittent   streams 2. Sinkholes 3. Abrupt contour changes 4. Heavily wooded swamp areas The plotted elevations of the intersection  of  core  borings  and the surface of the earth should be accurate to the nearest 1. 0.1 ft 2. 0.5 ft 3. 1.0  ft 4. 5.0  ft Geological surveys should conform to  what  degree  of  precision? 1. First  order 2. Second  order 3. Third  order 4. Fourth  order 12







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