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ASSIGNMENT QUESTIONS - 14069_756
ASSIGNMENT QUESTIONS - 14069_758

Engineering Aid 3 - Beginning Structural engineering guide book
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IN  ANSWERING  QUESTIONS  12-27  AND  12-28,  YOU ARE SETTING GRADE STAKES BY THE PROCEDURE THAT INVOLVES COMPLETING THE NECESSARY COMPUTATIONS  WHILE  AT  EACH  STATION. 12-27. You can obtain the grade rod by taking  the  difference  between  what two  measurements? 1. The HI and the ground elevation 2. The HI and the finished grade 3. The finished grade and the ground elevation 4. The width of the highway and the width of the fill or cut 12-28. You can obtain the amount of cut or fill for a given station by computing  the  sum  of  or  difference between what two measurements? 1. The HI and the finished grade 2. The ground elevation and the ground rod 3. The ground rod and the grade rod 4. The HI and the ground rod IN ANSWERING QUESTIONS 12-29 AND 12-30, YOU ARE SETTING A CENTERLINE GRADE STAKE AT A STATION WHERE THE EXISTING GROUND ELEVATION IS 98.6 FEET AND THE REQUIRED ELEVATION IS 110.3  FEET. 12-29. At this station, you obtain a reading of 6.3 feet. What is the (a) grade rod and (b) ground rod? 1. (a) 6.3     (b) 104.9 2. (a) 5.4   (b)   6.3 3. (a) 6.3   (b)   5.4 4. (a) 104.9  (b)  5.4 12-30. What information should you mark the front of the grade stake? 4 1. C 5— and the station number 2.  F   6s and  the  station  number 3. % and  the  station  number . 4. F llL and  the  station  number 12-31. What is the slope stake distance from the center line if W/2 . 18 feet,    h = 6 feet,    and the slope ratio is 2:1? 1. 21 ft 2. 24 ft 3. 30 ft 4. 42 ft on QUESTIONS 12-32 AND 12-33 PERTAIN TO THE SETTING OF SLOPE STAKES FOR A CUT SECTION. THE DISTANCE FROM THE CENTER LINE TO THE BEGINNING OF THE SIDE SLOPE IS 22 FEET. THERE IS A CROSSFALL OF 0.5 FEET AND A DITCH 2 1/2 FEET IN DEPTH. THE SIDE SLOPE AND BACK SLOPE RATIO IS 3:1, AND h IS 8 FEET. 12-32. What is the value of W/2? 1. 7.5  ft 2. 22.0 ft 3. 29.5 ft 4. 38.5 ft 12-33. What is the slope stake distance from the center line? 1. 24.0 ft 2. 29.0 ft 3. 44.0 ft 4. 62.5 ft 85







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