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modul aliran seragam.pdf

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D. Cara perhitungan dengan menggunakan Design Chart<br />

(dari<br />

Ven Te Chow)<br />

Pada<br />

sekumpulan<br />

kurva<br />

untuk<br />

menentukan<br />

kedalaman normal yang tersedia (Ven<br />

Te Chow<br />

gambar 6.1) dapat dicari harga y dengan menghitung<br />

lebih<br />

dulu harga AR 2/3 dan persamaan Manning<br />

dimana :<br />

A R<br />

A R<br />

B<br />

2 3<br />

2 3<br />

8 3<br />

=<br />

nQ 0,025×<br />

11<br />

= = 6,875<br />

i 0,0016<br />

6,875<br />

= = 0,058<br />

8 3<br />

( 6 )<br />

Dari kurva didapat y n /B = 0,18<br />

y n = 0,17 x 6 = 1,02 m

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