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::

:

:

:

:

:

:

ha ha ha

3 2 1

5 4

6

Bendung 12

11

10 8

9 7

F E D

ha ha ha

Luas petak sawah Q = 1,2 x ..... ha

Q A = ha = x = m3/det

Q B = ha = x = m3/det

Q C = ha = x = m3/det

Q D = ha = x = m3/det

Q E = ha = x = m3/det

Q F = ha = x = m3/det

Hitung kecepatan aliran dalam saluran jika debit rencana (Q) = jumlah Debit rencana petak tersier di saluran sekunder

Penyelesaian

Saluran 1 W

Diket :

n = h =

S =

Q =

h =

B = B =

*) Cari Luas penampang basah

A = B x h

= 1,20 x

= m2

*) Cari Keliling Penampang Basah

P = B + 2 h

= 1,20 + 2

= m'

*) Cari jari-jari hidrolis

A

P

18,25 23,65

0,49 m6,40

2,60

6,40

R = =3,12

=

23,40

2,60

1,20 1,20

2,60

3,12

Saluran berbentuk empat persegi panjang dengan kemiringan dasar saluran (S) = 0,015, koefisien kekasaran manning 0,010

0,010 2,60

0,015

18,25 18,25 1,2 21,90

17,71 17,71 1,2 21,25

18,25 18,25 1,2 21,90

23,65 23,65 1,2 28,38

19,5 19,5 1,2 23,40

16,89 16,89 1,2 20,27

17,71

C B A

18,25 16,89 19,50

NAMA DOSEN YULIMAN ZILIWU, ST.MT

TANGGAL TUGAS 28 Mei 2015

TANDA TANGAN

NAMA MAHASISWA DIDIK STYAWAN

JURUSAN TEKNIK SIPIL

MATA KULIAH BANGUNAN SIPIL

FAKULTAS TEKNIK UNIVERSITAS TUNAS PEMBANGUNAN

SURAKARTANo. URUT PRESENSI

TUGAS SP NIM A 0113 022

*) Cari Kecepatan aliran dengan memasukkan nilai yang diketahui

1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det

Q Saluran = Q rencana

ok

Saluran 2

Diket : W

n =

S = h =

Q =

h =

B =

B =


A = B x h

= 2,00 x

= m2


P = B + 2 h

= 2,00 + 2

= m'


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 3

Diket : W

n =

S = h =

Q =

h =

B =

B =


A = B x h

= 2,20 x

= m2


P = B + 2 h

= 2,20 + 2

= m'


A

P0,57 m

4,60

2,64

1,20

4,60

R = =2,64

=

21,90

1,20

2,20

2,20

1,20

21,769

21,769 20,268

0,010

0,015

V = ( R )2/3 ( S

1,20

0,015 )1/2

0,010

8,37

2,6 8,37

)1/2

=1

( 0,57 )2/3 (

2,6

1,30

4,60

R = =2,6

=

20,27

1,30

2,00

0,57 m4,60

2,00

1,30

23,669

23,669 23,400

0,010

0,015 1,30

0,015 )1/2

0,010

7,59

3,12 7,59

)1/2

=1

( 0,49 )2/3 (

V = ( R )2/3 ( S


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 4

Q Saluran 4 = Q Saluran 1

Saluran 5

Diket : W

n =

S = h =

Q = + QB = M3/det

h =

B =

B =


A = B x h

= 2,20 x

= m2


P = B + 2 h

= 2,20 + 2

= m'


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 6

Diket : W

n =

S = h =

Q = + Q3 = M3/det

h =

B =

B =


A = B x h

= 2,80 x

= m2


P = B + 2 h

= 2,80 + 2

= m'

2,80

2,80

2,20

6,16

2,20

7,20

43,67

0,010

0,015

= ( R )2/3 ( S

4,62

2,10

6,40

0,010

0,015

)1/2

0,015 )1/2

0,010

9,86

4,62 9,86

)1/2

1( 0,72 )

2/3 (

0,72 m6,40

QA

2,10

2,20

2,20

2,10

2,20

45,533

45,533 43,668

=

V

2,10

Q5 65,57

2,20

22,330

22,330 21,900

0,015 )1/20,010

8,46

2,64 8,46

=1

( 0,57 )2/3 (

R = =4,62

=

V = ( R )2/3 ( S


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 7 & 8

Diket : W

n =

S = h =

Q = M3/det

h =

B =

B =


A = B x h

= 2,20 x

= m2


P = B + 2 h

= 2,20 + 2

= m'


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 9

Diket : W

n =

S = h =

Q = M3/det

h =

B =

B =


A = B x h

= 1,80 x

= m2


P = B + 2 h

= 1,80 + 2

= m'

1,50

4,80

21,90

1,50

1,80

1,80

1,50

2,7

29,847

29,847 28,380

0,010

0,015 1,50

0,015 )1/2

0,010

9,04

3,3 9,04

)1/2

=1

( 0,63 )2/3 (

0,63 m5,20

V = ( R )2/3 ( S

3,3

1,50

5,20

R = =3,3

=

28,38

1,50

2,20

2,20

1,50

67,992

67,992 65,568

0,010

0,015 1,50

0,015 )1/2

0,010

11,04

6,16 11,04

=1

( 0,86 )2/3 (

m7,20

V = ( R )2/3 ( S )

1/2

R = =6,16

= 0,86


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 10

Diket : W

n =

S = h =

Q = M3/det ( Debit Aliran Saluran 7&8 + 9 )

h =

B =

B =


A = B x h

= 2,90 x

= m2


P = B + 2 h

= 2,90 + 2

= m'


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 11

Diket : W

n =

S = h =

Q = M3/det ( Debit Aliran Saluran 10 + QF )

h =

B =

B =


A = B x h

= 2,90 x

= m2


P = B + 2 h

= 2,90 + 2

= m'

2,30

7,50

71,53

2,30

2,90

2,90

2,30

6,67

51,274

51,274 50,280

0,010

0,015 2,30

0,015 )1/2

0,010

10,40

4,93 10,40

)1/2

=1

( 0,78 )2/3 (

0,78 m6,30

V = ( R )2/3 ( S

1,70

6,30

R = =4,93

=

50,28

1,70

2,90

2,90

1,70

4,93

22,533

22,533 21,900

0,010

0,015 1,70

0,015 )1/2

0,010

8,35

2,7 8,35

)1/2

=1

( 0,56 )2/3 (

0,56 m4,80

V = ( R )2/3 ( S

R = =2,7

=


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

Saluran 12

Diket : W

n =

S = h =

Q = M3/det ( Debit Aliran Saluran Q6 + Q11 )

h =

B =

B =


A = B x h

= 4,20 x

= m2


P = B + 2 h

= 4,20 + 2

= m'


A

P


1

n

= m/det

Kontrol

Q Saluran = A x V

= x

= m/det


ok

140,444

140,444 137,100

0,015 )1/2

0,010

13,38

10,5 13,38

)1/2

=1

( 1,14 )2/3 (

1,14 m9,20

V = ( R )2/3 ( S

2,50

9,20

R = =10,5

=

137,10

2,50

4,20

4,20

2,50

10,5

75,547

75,547 71,532

0,010

0,015 2,50

0,015 )1/2

0,010

11,33

6,67 11,33

)1/2

=1

( 0,89 )2/3 (

0,89 m7,50

V = ( R )2/3 ( S

R = =6,67

=

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