PLAN DAM

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Tabel 22 - Klasifikasi Permeabilitas Tanah Dan Batuan

DATA

TENTUKAN PERMEABILITASNYAKedalaman Sample 0-5 5-10 10-15

Specific gravity (Gs) - 2.649

Void Ratio e - 0.463

Koef. Permeabilitas cm/dt - 1 x 10^-4 -

TENTUKAN PERMEABILITASNYAKedalaman Sample 0-5 5-10 10-15

Specific gravity (Gs) - 2.649 - -

Void Ratio € - 0.463

Koef. Permeabilitas cm/dt 2 x 10^-6 9.4 x 10^-6 2.2 x 10^-6

Gs = 2.649

= 0.98 t/m3

= 1.775 t/m3

e = 0.463

I kritis (Gs -1)/(1+e) = 1.127

I kritis seepage = 0.3

SF = I kritis

= 3.758 <I kritis seepage

wd

(Gs.w/d)-1

PLAN DAM

TENTUKAN PERMEABILITASNYA15-20 20-25 25-30 30-35 35-40

1.9 x10 ^-4 - - - 5.6x10^-5

TENTUKAN PERMEABILITASNYA15-20 20-25 25-30 30-35

- - - -

1.6 x 10^-6 1.6 x 10^-6 9.3 x 10^-6 5.3 x 10^-6

2 oke