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ASSIGNMENT QUESTIONS - 14071_523
ASSIGNMENT QUESTIONS - 14071_525

Engineering Aid 2 - Intermediate Structural engineering guide book
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3-33. Preliminary cross sections are used in conjunction with (a) what sections and (b) for which of the following   purposes? 1. (a) Final (b) to determine as- built  conditions 2. (a)  As-built  (b)  to  determine construction errors 3. (a)  Typical  (b)  to  determine existing material usefulness 4. (a) finished roadbed (b) to determine   earthwork requirements 3-34. Final cross sections show which of the  following  information? 1. Finished  elevation 2. Actual cross-sectional shape of the curves 3. Distances of ditches from the center  line 4. Each of the above 3-35. When, if ever, should a route be relocated due to drainage problems? 1. When planned through a forest 2. When located in a floodplain 3. When underground springs are a mile  away 4. Never 3-36. Which, if any, of the following actions should be taken during road construction to prevent standing puddles  on  the  roadway? 1. Slant the worked surface of the road to provide quicker runoff 2. Cut ditches outside the construction   limits 3. Raise the final grade of the roadway 4. None of the above 3-37. A perforated pipe is placed in the bottom of a trench and backfilled to a designated depth to lower the water table. What term describes this  action? 3-38. You lay out a 50-foot ditch for subsurface drainage. What is the minimum grade, in feet, allowed? 1. 0.10 2. 0.15 3. 0.25 4. 0.30 3-39. Which,  if  any,  of  the  following effects does rainfall have on a roadway? 1. Cleans  the  road  surface 2. Erodes  the  roadway 3. Weakens  road  if  allowed  to stand 4. None of the above 3-40. Your  center-line  elevation  is 0.25 feet higher than the edge of the road. What term best describes this  condition? 1. Superelevation 2. Drainage 3. Ditching 4. Crown 3-41. Which  of  the  following  factors should  you  consider  when determining  the  size  and  type of  roadway  ditches? 1. Soil  types 2. Lay of the land 3. Volume  of  water 4. Each of the above 3-42. Which  of  the  following  conditions occur when using a minimum grade on  ditches? 1. Excessive  erosion 2. Increased  water-runoff  velocity 3. Ponding  effect 3-43. The purpose of check dams is to 1. collect  water 2. slow  waters 3. form ponds 4. beautify the roaduay 1. French  drain 2. Trenching 3. Bleeders 4. Tile  drain 18







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