Pengolahan Data Kerangka Dasar Horizontal ( Kelompok ).docx

Pengolahan Data Kerangka Dasar Horizontal Bacaan Sudut Sudut

Bacaan Sudut

Jarak

°

´

̋

Desimal

D1

25,50

α12 = β1

89°

2,5´

6,36̋

89,0434

D2

31,75

β2

88°

3,5´

6,35̋

88,0601

D3

25,50

β3

88°

4

0,38̋

88,0688

D4

41,00

β4

73°

1,8´

5,46̋

73,0315

D5

40,00

β5

297°

3´

5,4̋

297,0515

D6

39,00

Σd

202,75

β6

20°

3´

4,5̋

20,0513

Σβ

655°

17,8´

28,4̋

655,3046

POLYGON TERTUTUP METODE BOWDITCH A. Syarat 1 (α akhir – α awal ) = ∑ B – ( N-2) . 180 + ∑ B 0 = 655 , 3046 – ( 6 – 2 ) 180 + FB = 655 , 3046 – 720 + FB -FB = -64 , 6954 + FB FB = 64 , 6954 Mencari B koreksi 

B1 = b1 + ( FB : 6 ) = 89 , 0434 + ( 64 , 6954 : 6 ) = 89 , 0434 + 10 , 7826 = 99 , 826



B2 = b2 + ( FB : 6 ) = 88 , 0601 + ( 64 , 6954 : 6 ) = 88 , 0601 + 10 , 7826 = 98 , 8427



B3 = B3 + ( FB : 6 ) = 88 , 0668 + ( 64 , 6954 : 6 ) = 88 , 0668 + 10 , 7826 = 98 , 8493



B4 = B4 + ( FB : 6 ) = 73 , 0315 + ( 64 , 6954 : 6 ) = 73 , 0315 + 10 , 7826 = 83 , 8141



B5 = B5 + ( FB : 6 ) = 297 , 0515 + ( 64 , 6954 : 6 ) = 297 , 0515 + 10 , 7826 = 307 , 8341



B6 = B6 + ( FB : 6 ) = 20 , 0513 + ( 64 , 6954 : 6 ) = 20 , 0513 + 10 , 7826 = 30 , 8338

MENCARI α KOREKSI 

α 1 = α 1 + B1 = 89 , 0434 + 99 , 826 = 188 , 8694



α 2 = α 2 + B2 - 180 = 188 , 8694 + 98 , 8427 -180 = 107 , 7121



α 3 = α 2 + B3 = 107 , 7121 + 98 , 8493 – 180 = 26 , 5616



α 4 = α 3 + B4 = 26 , 5614 + 83 , 8141 – 180 = - 69 , 6245



α 5 = α 4 + B5 = -69 , 6245 + 307 , 8341 – 180 = 58 , 2096



α 6 = α 5 + B6 = 58 , 2069 + 30 , 8338 – 180 = - 90 , 9566

B. Syarat 2 ∑ Δ x = ∑ d sin α ∑Δx1 = 25 , 50 Sin 188 , 8694 = -3 , 9317 ∑Δx2 = 31 , 75 sin 107 , 7121 = 30 , 2450 ∑Δx3 = 25 , 50 sin 26 , 5615 = 11 , 4025 ∑Δx4 = 41 , 00 sin -69 , 6245 = -38 , 4347 ∑Δx5 = 40 , 00 sin -69 , 6245 = 33 , 9992