DATA DIRECT SHEAR TEST ( UJI GESER LANGSUNG )

Tanggal 14-Jun-19
No. Sampel
Dikerjakan
Diperiksa
Data Kadar Air Sebelum Pengujian Dimensi Ring
No. cawan 1 2 3 Tinggi (H) cm 2 2 2 `
Berat Cawan (gr), [1] 10.16 10.62 10.61 Diameter (d) cm 6.2 6.2 6.2
Berat Cawan + Sampel (gr), [2] 19.31 21.77 21.58 Luas (A) cm2 30.19 30.19 30.19 30.19
Berat Cawan + sampel kering (gr), [3] 17.67 19.66 19.60 Volume (V) cm3 60.38 60.38 60.38
Berat Air (gr), [(4) = (2) - (3) 1.64 2.11 1.98 Data Sampel
Berat sampel kering (gr), [(5) = (3) - (1)] 7.51 9.04 8.99 No. Sampel 1 2 3
Kadar air W (%) = [(4) / (5)] x 100% 21.84 23.34 22.02 Berat Ring + Sampel (gr), [1] 308.00 310.00 311.00
Kadar air Rata - rata (%) 22.40 Berat Ring (gr), [2] 200.46 198.63 199.57
Berat Sampel (gr), [(3) = (1) - (2) 107.54 111.37 111.43
Berat Volume Basah,γb (g/cm3) 1.78 1.84 1.85
Berat Volume Basah,γb Rata - rata 1.82
Berat Volume Kering,γd (g/cm3) 1.46 1.50 1.51
Berat Volume Kering, γd Rata-rata 1.49

Sampel P1 = 10 kg σn1 = P / A = 0.33 kg/cm2 P2 = 20 kg σn2 = P / A = 0.66 kg/cm2 P3 = 30 kg σn3 = P / A = 0.99 kg/cm2
Time Horiz Horiz Vert, Vert, Load Horiz, Shear Vert, Vert, Load Horiz, Shear Vert, Vert, Load Horiz, Shear
sec Dial Displace, Dial Displace, Ring Shear Force Stress Dial Displace, Ring Shear Force Stress Dial Displace, Ring Shear Force Stress
Reading ΔH (mm) Reading ΔV (mm) Dial T (kg) τ(kg / cm2) Reading ΔV (mm) Dial T (kg) τ(kg / cm2) Reading ΔV (mm) Dial Tanah (kg) τ(kg / cm2)
X 0.01 X 0.01 Reading X 0.83134 T/A X 0.01 Reading X 0.83134 T/A X 0.01 Reading X 0.83134 T/A
0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15 26.5 0.27 96.00 0.960 1.00 0.831 0.028 140.00 1.400 0.90 0.748 0.025 285.00 2.850 2.80 2.33 0.08
30 53 0.53 97.00 0.970 1.50 1.247 0.041 140.90 1.409 2.30 1.912 0.063 286.20 2.862 3.00 2.49 0.08
45 79.5 0.80 97.10 0.971 1.80 1.496 0.050 150.10 1.501 2.90 2.411 0.080 287.00 2.870 4.00 3.33 0.11
60 106 1.06 97.30 0.973 2.00 1.663 0.055 150.40 1.504 3.20 2.660 0.088 287.00 2.870 4.10 3.41 0.11
90 159 1.59 98.00 0.980 2.10 1.746 0.058 150.80 1.508 3.80 3.159 0.105 287.90 2.879 4.90 4.07 0.13
120 212 2.12 98.10 0.981 2.90 2.411 0.080 151.00 1.510 4.10 3.408 0.113 288.00 2.880 5.20 4.32 0.14
150 265 2.65 98.20 0.982 3.00 2.494 0.083 151.00 1.510 4.20 3.492 0.116 288.10 2.881 5.70 4.74 0.16
180 318 3.18 99.00 0.990 3.50 2.910 0.096 151.00 1.510 4.70 3.907 0.129 288.30 2.883 6.90 5.74 0.19
210 371 3.71 99.00 0.990 4.00 3.325 0.110 151.00 1.510 5.10 4.240 0.140 289.00 2.890 10.30 8.56 0.28
240 424 4.24 99.00 0.990 4.00 3.325 0.110 151.00 1.510 5.50 4.572 0.151 289.00 2.890 10.80 8.98 0.30
270 477 4.77 99.00 0.990 4.10 3.408 0.113 151.00 1.510 6.20 5.154 0.171 289.00 2.890 11.20 9.31 0.31
300 530 5.30 99.00 0.990 4.10 3.408 0.113 151.00 1.510 6.80 5.653 0.187 289.00 2.890 11.20 9.31 0.31
330 583 5.83 99.10 0.991 4.10 3.408 0.113 151.00 1.510 7.10 5.903 0.196 289.00 2.890 11.20 9.31 0.31
360 636 6.36 99.20 0.992 4.10 3.408 0.113 151.00 1.510 7.40 6.152 0.204 289.00 2.890 11.20 9.31 0.31
 Lampiran 19. Hasil Uji Geser Langsung Wopt + 9%

LABORATORIUM MEKANIKA TANAH

JURUSAN TEKNIK SIPIL
INSTITUT TEKNOLOGI MEDAN
JL.Gedung Arca No. 52 Telp.(061) 7373771 Medan

DATA DIRECT SHEAR TEST

Tanggal : 14-Jun-19
No. Sampel : Wopt + 9%
Shear Stress (kg/cm2)

No. Sampel 1 2 3
Berat Ring + Sampel (gr), [1] g 308.000 310.000 311.000
P = 10 k g P=20 k g
P = 30 k g Berat Ring (gr), [2] g 200.460 198.630 199.570
0.35 Berat Sampel (gr), [(3) = (1) - (2) g 107.540 111.370 111.430
0.30 Kadar air Rata - rata (%) Wn (%) 22.401
0.25 Berat isi sampel,γb [(4) = (3) / (V)] γb (gr/cm3) 1.781 1.844 1.845
0.20 (γb) rata-rata 1.824
0.15 Berat Volume Kering,γd [(5) = W / 100 + 1 / (4)] γd (gr/cm3) 1.462 1.495 1.512
0.10 (γd) rata-rata 1.490
0.05
Kadar air sesudah Pengujian Wn (%) 1.490
0.00
Normal Stress σn (kg/cm2) 0.331 0.662 0.994
0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 Shear Stress at Failure τ (kg/cm2) 0.113 0.204 0.308
Horizontal displace (mm)
Shear Displacement at Failure δh (%) 4.77 5.30 4.77
Displ Vertical (mm)

P = 10 kg P = 20 kg P = 30 kg

0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00

0.00
0.60
1.20
1.80
Displacement Horizontal (mm)
Tegangan geser (kg/cm2)

2.40
3.00

0.35
f(x ) = 0.2951257 x + 0.0128502683694778
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0.00 0.20 0.40 0.60 Normal
0.80 Stress1.00
(kg/cm2) 1.20 1.40 1.60 1.80 2.00

Sudut geser j = 16.44 °

Kohesi c = 0.0129 kg/cm2

Diketahui oleh: Diperiksa oleh:

Dosen Pembimbing Kepala Laboratorium Mekanika Tanah

Dr. Aazokhi Waruwu, S.T.,M.T. Dr. Aazokhi Waruwu, S.T.,M.T.

SOIL MECHANICS LABORATORY - CIVIL ENGINEERING DEPT.- MEDAN INSTITUTE OF TECHNOLOGY

83
Lab. Mekanika Tanah ITM FOTO DOKUMENTASI
Soil Investigation

Proyek Lokasi No. Sampel

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