Homework_Fall_2_2023

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San Diego State University *

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218

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Civil Engineering

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Oct 30, 2023

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pdf

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3

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CIVIL ENGINEERING 218 Surveying for Civil Engineers Fall 2023 Homework Assignment #2 Note: Print this homework assignment and submit your work directly on the sheets. 1. Prepare a set of profile levels for the data below and show the page check. Sta./BM + Sight HI - Sight Inter. Fore- Sight (IFS) Elev. Adj. Elev. BM 12 9.39 447.67* 8.88 TP 3 6.51 16+00 5.27 15+57 4.51 14+80 4.78 9.26 TP 2 6.41 13+58 6.07 13+00 7.05 12+50 9.07 12+32 11.35 10.67 TP 1 2.97 11+39 4.28 6.67 BM 11 437.39 Ʃ= Ʃ= 2. What is the percent grade between stations 15+57 and 11+39? Percent grade _______________%
3. Prepare the profile notes below, adjust station elevations and perform page check. Sta./BM + Back sight HI - Fore sight Int. Sight Elev. Adj. Elev. BM 11 3.55 148.04* 13+50 12.73 13+00 11.08 7.33 TP#2 4.66 12+50 7.08 12+00 5.98 11+50 7.74 11+00 9.72 9.21 TP#1 2.60 8.27 BM 10 134.10 ∑= ∑= Plot station elevations on the graph below: Elevation: 144.0 143.0 142.0 141.0 140.0 139.0 138.0 137.0 Station 11+00 11+50 12+00 12+50 13+00 13+50
4. A total station is set up over point “ BM - A ” and a vertical angle of 3 26 58 to the top of a flagpole. The horizontal distance from “BM - A to the flagpole is 324.69 feet. The H.I. of the total station is 5.58 feet and the elevation of “ BM - A ” is 249.85 feet. What is the elevation at the top of the flagpole? (Draw a sketch below to support your answer) 5. An instrument is set over point “ P ” with a 4.93 ft. H.I. A zenith angle of 92 53 26 and a slope distance of 428.59 ft. was taken to a rod 5.75 ft. above point “ R ”. The elevation of point “ R ” is 346.81 ft. What is the elevation of point “ P ”? (Draw a sketch to support your answer).
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