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Published by reyhanpratama0359, 2022-05-10 17:11:52

D011201061_Reyhan Pratama

D011201061_Reyhan Pratama

Saluran terbuka berbentuk trapezium terbuat dari tanah dengan

koefisien Manning (n) = 0,022 mempunyai lebar, B = 4,5m dan

kedalaman aliran, y = 2m dan kemiringan tebing/dinding 1: m (vertical:

horizontal) dengan m = 2. Apabila kemiringan dasar saluran adalah

0,0002; hitung debit aliran pada saluran tersebut.

Penyelesaian :

A = [B + (B + 2my)] 1y

2

= [4,5 + (4,5 + 2 x 2 x 2)] 1 x 2
2

= 17 2

P = + 2 (1 + 2)1/2
= 4,5 + (2 2) (1 + 22)1/2 = 13,444

R = A/P
= 17/13,44
= 1,264 m

Q = AV = 1 2/3 1/2


Q = 17 (1 ) 13,4442/3 0,00021/2

0,022

= 61,787 3/

Nama : Reyhan Pratama
NIM : D011201061
Tugas Hidrolika B


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