For Questi tation BS evation 00.00 BM No.1 8.63 10+00 104 8.5 63 4.1 3.1 2.9 40

Question

For Questi tation BS evation 00.00 BM No.1 8.63 10+00 104 8.5 63 4.1 3.1 2.9 40 20 10 15 20 40 10+50 10.5 11.2 8.5 2.l 5.53.6 40 20 10 10 25 11+00 9 114 126102 112 124 50 25 15 15 25 50 4.5 04.00 BM No.2 50. From what elevation are the foresights calculated? a. 708.59' b. 708.61' c. 708.65" d. 708.63' e. 708.64' 51. What is the error of closure? a. -0.02' b. -0.04 c. +0.04' d.-0.01' e. +0.02' 52. Where is the elevation of the lowest point in the notes? a. 11+00, 15' right b. 10+50, 20' left c. 10+00, 40' right d. 11+00 e. 11+00, 50' right

Explanation / Answer

52. e)

Station with largest FS value will be having lowest elevation, so at Stat 11+00 ,50' Right, Elevation = 708.63 - 13.1 = 695.53

53. b) 10+00 40 right, FS = 2.9, so elevation = 708.63-2.9 = 705.73'

54. c) Elevation = 708.63 - 12. 6 = 696.03'

55. e) Elevation = 708.63 - 6.7 = 701.93'

56. d) Already found in 53, Elevation = 705.73'

58. a) Station with lower FS value.

58. a) 10+00', 40 left, Point with the largest value of FS with FS = 10.4

59. a) 10+00', difference between extreme FS, at 10+00 = 10.4-2.9 =7.5', at 10+50 = 10.5-3.6 = 6.9' , at 11+00 = 13.1 - 11.4 = 1.7'

60. e) None of the above.

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