Tata Cara Perhitungan Sondir Menurut SNI-2827-2008 [PDF]

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Cw



:



kPa



pembacaan manometer untuk nilai perlawanan konus (kPa);



Tw



:



kPa



pembacaan manometer untuk nilai perlawanan konus dan geser (kPa);



Kw



:



kPa



selisih dengan (kPa);



Pkonus



:



gaya pada ujung konus (kN);



Ppiston



:



gaya pada piston (kN);



qc



:



kPa



perlawanan konus (kPa);



fs



:



kPa



perlawanan geser lokal (kPa);



Rf



:



%



Tf



:



N/m



Api



:



Dpi



:



angka banding geser (%);



20 cm



2



2



P konus = P pisto qc = Cw x Api Ac



P konus + P gese



geseran total (kPa); luas penampang piston (cm2 diameter piston (cm);



Ac



:



10 cm



Dc



:



35.7 mm



diameter konus sama dengan diameter selimut geser (cm)



As



:



150 cm2



luas selimut geser (cm



Ds



:



Ls



:



35.7 mm 133.5 mm



fs = Cw x Api As



luas penampang konus (cm2



diameter selimut geser (cm)



As = π x D Kw



=



Cw



panjang selimut geser (cm)



Rf = 10



s dan geser (kPa);



P konus = P piston qc = Cw x Api Ac P konus + P geser = P piston fs = Cw x Api As A s = π x Ds x L s Kw



=



Cw - Tw



Rf = 100 x fs qc



KEDALAMAN



Cw



Tw



Kw



qc



fs



fsx20 cm



Tf



m



kPa



kPa



kPa



kPa



kPa



N/m



N/m



0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8 6.0 6.2 6.4 6.6



0 2 2 4 4 6 6 8 8 15 15 20 25 30 20 20 31 35 45 45 55 50 50 75 85 95 155 35 35 20 20 95 95 200



0 4 4 6 6 8 8 12 12 20 20 25 30 35 25 25 40 40 52 56 65 55 55 80 95 100 165 40 40 25 25 115 115 205



0 2 2 2 2 2 2 4 4 5 5 5 5 5 5 5 9 5 7 11 10 5 5 5 10 5 10 5 5 5 5 20 20 5



0 4 4 8 8 12 12 16 16 30 30 40 50 60 40 40 62 70 90 90 110 100 100 150 170 190 310 70 70 40 40 190 190 400



0.00 0.27 0.27 0.27 0.27 0.27 0.27 0.53 0.53 0.67 0.67 0.67 0.67 0.67 0.67 0.67 1.20 0.67 0.93 1.47 1.33 0.67 0.67 0.67 1.33 0.67 1.33 0.67 0.67 0.67 0.67 2.67 2.67 0.67



0.00 5.33 5.33 5.33 5.33 5.33 5.33 10.67 10.67 13.33 13.33 13.33 13.33 13.33 13.33 13.33 24.00 13.33 18.67 29.33 26.67 13.33 13.33 13.33 26.67 13.33 26.67 13.33 13.33 13.33 13.33 53.33 53.33 13.33



0.00 5.33 10.67 16.00 21.33 26.67 32.00 42.67 53.33 66.67 80.00 93.33 106.67 120.00 133.33 146.67 170.67 184.00 202.67 232.00 258.67 272.00 285.33 298.67 325.33 338.67 365.33 378.67 392.00 405.33 418.67 472.00 525.33 538.67



NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34



Rf % 6.67 6.67 3.33 3.33 2.22 2.22 3.33 3.33 2.22 2.22 1.67 1.33 1.11 1.67 1.67 1.94 0.95 1.04 1.63 1.21 0.67 0.67 0.44 0.78 0.35 0.43 0.95 0.95 1.67 1.67 1.40 1.40 0.17