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Page 1: tugas+mektan+1+chintya+martishia+(075)

Nama : Chintya martishia

NPM : 1310015211075

Kelas : Sipil 2c

“MEKANIKA TANAH 1“

Hubungan Angka Pori dengan Perositas

I. ANGKA PORI (void ratio) (e) : Perbandingan antara volume rongga (Vv) terhadap volume tanah (Vs) (0 < e <∼)

Vv = Volume pori

Vs = Volume butiran Vs = Vv – V

II. POROSITAS (POROSITY) (n) : Perbandingan antara volume rongga

(Vv) terhadap volume total (V) (0 ≤ n ≤ 1)

V = volume tanah total V = Vs + Vv

III. HUBUNGAN ANGKA PORI DAN PORISITAS

e = VvVs = Vv

V−Vv VvV−Vv : V =

(VvV )

1−( VvV )

= n1−n

n = e1+e

e = VvVs

n = VvV