Lecture LevelingTrigonometric

Lecture LevelingTrigonometric - 3000 0.215249 0.030134889...

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Lecture Leveling Theory and Trig Leveling Lecture Notes Text Coverage: Wolf and Ghilani, 11 th Edition: Ch 4. all Prob: 4:1 - 24 TRIG LEVELING SKETCH AND CALCULATION Z = measured zenith angle S = measured slope distance apparent target V = S * Cos Z r = refraction Hb= Target H. S V B Z c Ha. (Inst. Height) A Bench Mark Elev. Elevation Datum (NGVD/NAVD) 1 1 b a H r SCosZ c H ElevA ElevB - - + + + = Size of Curvature and Refraction Corrections: D ft c ft r = 0.14*c ft (c-r) ft 0 0 0 0 500 0.005979 0.00083708 0.005142 1000 0.023917 0.003348321 0.020568 1500 0.053812 0.007533722 0.046279 2000 0.095666 0.013393284 0.082273 2500 0.149479 0.020927007 0.128552
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Unformatted text preview: 3000 0.215249 0.030134889 0.185114 3500 0.292978 0.041016933 0.251961 4000 0.382665 0.053573137 0.329092 4500 0.484311 0.067803501 0.416507 5000 0.597914 0.083708025 0.514206 5500 0.723477 0.10128671 0.62219 6000 0.860997 0.120539555 0.740457 6500 1.010475 0.141466561 0.869009 7000 1.171912 0.164067727 1.007845 7500 1.345308 0.188343054 1.156964 8000 1.530661 0.21429254 1.316368 8500 1.727973 0.241916187 1.486057 9000 1.937243 0.271213993 1.666029 9500 2.158471 0.30218596 1.856285 10000 2.391658 0.334832087 2.056826...
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