tugas baja 2.doc
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TUGAS
TUGAS
STRUKTUR BAJA
II
Diajukan Guna Melengkapi Syarat syarat Memenuhi
Nilai Tugas Mata Kuliah Struktur Baja II
Pada Jurusan Teknik Sipil Program Strata 1 ( S1 )
Sekolah Tinggi Teknologi Ronggolawe Cepu
Disusun Oleh :
ARDIAN BUDI SATRIYA
08150042
SEKOLAH TINGGI TEKNOLOGI RONGGOLAWE CEPU
2011
HALAMAN PENGESAHAN
Tugas ini telah diperiksa dan disetujui pada :
Hari:
Tanggal:
Mengetahui :
Dosen Mata Kuliah Struktur Baja II
Sekolah Tinggi Teknologi Ronggolawe Cepu
IGNATIUS GIYANTO, ST
PENYELESAIAN :
1. Diketahui :
WF. 600. 200. 13. 23
Tebal beton= 18 cm
Lebar beton= 125 cm
MLL= 28 000 kgm= 2 800 000 kgcm
n= 10
F. Beton=
10
18
*
125
= 225 cm
F. WF= 107,7 cm
Y1=
WF
F
Fbeton
Z
WF
F
Z
Fbeton
.
)
1
*
.
(
)
2
*
(
+
+
=
7
,
107
225
)
30
*
7
,
107
(
)
69
*
225
(
+
+
= 56,38 cm
Ix=
))
3
*
.
(
.
(
)
5
*
(
2
2
Y
WF
F
WF
Ix
Y
Fbeton
n
Ixbeton
+
+
+
=
))
38
,
26
*
7
,
107
(
103000
(
)
62
,
12
*
225
(
10
18
*
125
*
2
2
3
12
1
+
+
+
= (6075 + 35834,49) + (103000 + 74948,90)
= 219858,39 cm
= ( 219858 cm
( =
W
M
W =
Z
Ix
( =
Z
Ix
M
Untuk n = 10
Wa=
2
Y
Ix
=
cm
cm
62
,
3
219858
4
= 60734,25 cm
Wb=
1
Y
Ix
=
cm
cm
38
,
56
219858
4
= 3899,57 cm
Wc=
4
Y
Ix
=
cm
cm
62
,
21
219858
4
= 10169,20 cm
(a= Tegangan atas baja=
Wa
MLL
=
3
25
,
60734
2800000
cm
kgcm
= 46,10 kg/cm
(b= Tegangan bawah baja=
Wb
MLL
=
3
57
,
3899
2800000
cm
kgcm
= 718,03 kg/cm
(c= Tegangan atas beton=
n
Wc
MLL
*
=
10
*
20
,
10169
2800000
3
cm
kgcm
= 27,53 kg/cm
(c= Tegangan bawah beton=
n
Wa
MLL
*
=
10
*
25
,
60734
2800000
3
cm
kgcm
= 4,61 kg/cm
2. Diketahui :
WF. 600. 200. 12. 20
Tebal beton= 18 cm
Lebar beton= 120 cm
MLL= 27 500 kgm= 2 750 000 kgcm
n= 10
F. Beton=
10
18
*
120
= 216 cm
F. WF= 152,5 cm
Y1=
WF
F
Fbeton
Z
WF
F
Z
Fbeton
.
)
1
*
.
(
)
2
*
(
+
+
=
5
,
152
216
)
30
*
5
,
152
(
)
69
*
216
(
+
+
= 52,86 cm
Ix=
))
3
*
.
(
.
(
)
5
*
(
2
2
Y
WF
F
WF
Ix
Y
Fbeton
n
Ixbeton
+
+
+
=
))
86
,
22
*
5
,
152
(
90400
(
)
14
,
16
*
216
(
10
18
*
120
*
2
2
3
12
1
+
+
+
= (5832 + 56267,91) + (90400 + 79693,39)
= 232193,3 cm
= ( 232193 cm
( =
W
M
W =
Z
Ix
( =
Z
Ix
M
Untuk n = 10
Wa=
2
Y
Ix
=
cm
cm
14
,
7
232193
4
= 32520,03 cm
Wb=
1
Y
Ix
=
cm
cm
86
,
52
232193
4
= 4392,60 cm
Wc=
4
Y
Ix
=
cm
cm
14
,
25
232193
4
= 9236 cm
(a= Tegangan atas baja=
Wa
MLL
=
3
03
,
32520
2750000
cm
kgcm
= 84,56 kg/cm
(b= Tegangan bawah baja=
Wb
MLL
=
3
60
,
4392
2750000
cm
kgcm
= 626,05 kg/cm
(c= Tegangan atas beton=
n
Wc
MLL
*
=
10
*
9236
2750000
3
cm
kgcm
= 29,78 kg/cm
(c= Tegangan bawah beton=
n
Wa
MLL
*
=
10
*
03
,
32520
2750000
3
cm
kgcm
= 8,46 kg/cm
3. Diketahui :
WF. 600. 300. 14. 23
Tebal beton= 15 cm
Lebar beton= 125 cm
MLL= 32 000 kgm= 3 200 000 kgcm
Plat rangkap= 2 cm x 9 cm
n= 10
F. Beton=
10
15
*
125
= 187,5 cm
F. WF= 222,4 cm
F. Plat rangkap= 2 cm x 9 cm = 18 cm
Y1=
plat
F
WF
F
Fbeton
Z
plat
F
Z
WF
F
Z
Fbeton
.
.
)
3
*
.
(
)
1
*
.
(
)
2
*
(
+
+
+
+
=
18
4
,
222
5
,
187
)
1
*
18
(
)
32
*
4
,
222
(
)
5
,
69
*
5
,
187
(
+
+
+
+
= 47,13 cm
Ix=
))
6
*
.
(
.
(
))
3
*
.
(
.
(
)
5
*
(
2
2
2
Y
Plat
F
Plat
Ix
Y
WF
F
WF
Ix
Y
Fbeton
n
Ixbeton
+
+
+
+
+
=
))
1
,
46
*
18
(
2
*
9
*
12
1
(
))
13
,
15
*
4
,
222
(
137000
(
)
37
,
22
*
5
,
187
(
10
15
*
125
*
12
1
2
3
2
2
3
3
+
+
+
+
+
= (3515,63 + 93828,17) + (137000 + 50911,12) + (6 + 38303,58)
= 323564,5 cm
( =
W
M
W =
Z
Ix
( =
Z
Ix
M
Untuk n = 10
Wa=
2
Y
Ix
=
cm
cm
87
,
14
5
,
323564
4
= 21759,55 cm
Wb=
1
Y
Ix
=
cm
cm
13
,
47
5
,
323564
4
= 6865,36 cm
EMBED Equation.3
Wc=
4
Y
Ix
=
cm
cm
87
,
29
5
,
323564
4
= 10832,42 cm
(a= Tegangan atas baja=
Wa
MLL
=
3
55
,
21759
3200000
cm
kgcm
= 147,06 kg/cm
(b= Tegangan bawah baja=
Wb
MLL
=
3
36
,
6865
3200000
cm
kgcm
= 466,11 kg/cm
(c= Tegangan atas beton=
n
Wc
MLL
*
=
10
*
42
,
10832
3200000
3
cm
kgcm
= 29,54 kg/cm
(c= Tegangan bawah beton=
n
Wa
MLL
*
=
10
*
55
,
21759
3200000
3
cm
kgcm
= 14,71 kg/cm
4. Diketahui :
WF. 700. 300. 13. 20
Tebal beton= 21 cm
Lebar beton= 128 cm
MLL= 33 000 kgm= 3 300 000 kgcm
Plat rangkap= 2 cm x 11 cm
n= 10
F. Beton=
10
21
*
128
= 268,8 cm
F. WF= 211,5 cm
F. Plat rangkap= 2 cm x 11 cm = 22 cm
Y1=
plat
F
WF
F
Fbeton
Z
plat
F
Z
WF
F
Z
Fbeton
.
.
)
3
*
.
(
)
1
*
.
(
)
2
*
(
+
+
+
+
=
22
5
,
211
8
,
268
)
1
*
22
(
)
37
*
5
,
211
(
)
5
,
82
*
8
,
268
(
+
+
+
+
= 59,77 cm
Ix=
))
6
*
.
(
.
(
))
3
*
.
(
.
(
)
5
*
(
2
2
2
Y
Plat
F
Plat
Ix
Y
WF
F
WF
Ix
Y
Fbeton
n
Ixbeton
+
+
+
+
+
=
))
2
77
,
58
*
22
(
2
*
11
*
12
1
(
))
77
,
22
*
5
,
211
(
172000
(
)
73
,
22
*
8
,
268
(
10
21
*
128
*
12
1
3
2
2
3
+
+
+
+
+
= (9878,4 + 138876,30) + (172000 + 109657,02) + (7,33 + 75986,08)
= 506405,13 cm
( =
W
M
W =
Z
Ix
( =
Z
Ix
M
Untuk n = 10
Wa=
2
Y
Ix
=
cm
cm
23
,
12
13
,
506405
4
= 41406,80 cm
Wb=
1
Y
Ix
=
cm
cm
77
,
59
13
,
506405
4
= 8472,56 cm
EMBED Equation.3
Wc=
4
Y
Ix
=
cm
cm
23
,
33
13
,
506405
4
= 15239,40 cm
(a= Tegangan atas baja=
Wa
MLL
=
3
80
,
41406
3300000
cm
kgcm
= 79,70 kg/cm
(b= Tegangan bawah baja=
Wb
MLL
=
3
56
,
8472
3300000
cm
kgcm
= 389,49 kg/cm
(c= Tegangan atas beton=
n
Wc
MLL
*
=
10
*
40
,
15239
3300000
3
cm
kgcm
= 21,65 kg/cm
(c= Tegangan bawah beton=
n
Wa
MLL
*
=
10
*
80
,
41406
3300000
3
cm
kgcm
= 7,97 kg/cm
5. Diketahui :
WF. 500. 300. 11. 18
Tebal beton= 18 cm
Lebar beton= 118 cm
MLL= 24 000 kgm= 2 400 000 kgcm
Plat rangkap= 2 cm x 10 cm
n= 10
F. Beton=
10
18
*
118
= 212,4 cm
F. WF= 163,5 cm
F. Plat rangkap= 2 cm x 10 cm = 20 cm
Y1=
plat
F
WF
F
Fbeton
Z
plat
F
Z
WF
F
Z
Fbeton
.
.
)
3
*
.
(
)
1
*
.
(
)
2
*
(
+
+
+
+
=
20
5
,
163
4
,
212
)
1
*
20
(
)
27
*
5
,
163
(
)
61
*
4
,
212
(
+
+
+
+
= 43,93 cm
Ix=
))
6
*
.
(
.
(
))
3
*
.
(
.
(
)
5
*
(
2
2
2
Y
Plat
F
Plat
Ix
Y
WF
F
WF
Ix
Y
Fbeton
n
Ixbeton
+
+
+
+
+
=
))
2
3
2
2
3
93
,
42
*
20
(
2
*
10
*
12
1
(
))
93
,
16
*
5
,
163
(
71000
(
)
07
,
17
*
4
,
212
(
10
18
*
118
*
12
1
+
+
+
+
+
= (5734,8 + 61890,15) + (71000 + 46863,17) + (6,67 + 36859,70)
= 222354,49 cm
( =
W
M
W =
Z
Ix
( =
Z
Ix
M
Untuk n = 10
Wa=
2
Y
Ix
=
cm
cm
07
,
8
49
,
222354
4
= 27553,22 cm
Wb=
1
Y
Ix
=
cm
cm
93
,
43
49
,
222354
4
= 5061,56 cm
EMBED Equation.3
Wc=
4
Y
Ix
=
cm
cm
07
,
26
49
,
222354
4
= 8529,13 cm
(a= Tegangan atas baja=
Wa
MLL
=
3
22
,
27553
2400000
cm
kgcm
= 87,10 kg/cm
(b= Tegangan bawah baja=
Wb
MLL
=
3
56
,
5061
2400000
cm
kgcm
= 474,16 kg/cm
(c= Tegangan atas beton=
n
Wc
MLL
*
=
10
*
13
,
8529
2400000
3
cm
kgcm
= 28,14 kg/cm
(c= Tegangan bawah beton=
n
Wa
MLL
*
=
10
*
22
,
27553
2400000
3
cm
kgcm
= 8,71 kg/cm
125 cm
18 cm
60 cm
C
C
A
B
Y1= 56,38 cm
Y2 = 3,62 cm
Z1 = 30 cm
Y3 = 26,38 cm
Y5 = 12,62 cm
Y4 = 21,62 cm
Z2 = 69 cm
(c = 27,53 kg/cm
(c = 4,61 kg/cm
(a = 46,10 kg/cm
(b = 718,03 kg/cm
WF.600.200.13.23
Y4 = 25,14 cm
Y5 = 16,14 cm
120 cm
(c = 29,78 kg/cm
(c = 8,46 kg/cm
C
18 cm
(a = 84,56 kg/cm
A
C
Y3 = 22,86 cm
Y2 = 7,14 cm
WF.600.200.12.20
Z2 = 69 cm
Y1= 52,86 cm
60 cm
Z1 = 30 cm
(b = 626,05 kg/cm
B
Y4 = 29,87 cm
Y5 = 22,37 cm
125 cm
(c = 29,54 kg/cm
(c = 14,71 kg/cm
C
15 cm
(a = 147,06 kg/cm
A
C
Y3 = 15,13 cm
Y2 = 14,87 cm
WF.600.300.14.23
Z2 = 69,5 cm
Y1= 47,13 cm
60 cm
Z1 = 32 cm
(b = 466,11 kg/cm
B
2 cm
9 cm
Y6 = 46,13 cm
128 cm
Y4 = 33,23 cm
Y5 = 22,73 cm
(c = 21,65 kg/cm
(c = 7,97 kg/cm
C
21 cm
(a = 79,70 kg/cm
A
C
Y2 = 12,23 cm
Y3 = 22,77 cm
Z2 = 82,5 cm
70 cm
WF.700.300.13.20
Y1= 59,77 cm
Y6 = 58,77 cm
Z1 = 37 cm
2 cm
B
(b = 389,49 kg/cm
11 cm
118 cm
Y4 = 26,07 cm
Y5 = 17,07 cm
(c = 28,14 kg/cm
(c = 8,71 kg/cm
C
18 cm
(a = 87,10 kg/cm
A
C
Y2 = 8,07 cm
Y3 = 16,93 cm
Z2 = 61 cm
50 cm
WF.500.300.11.18
Y1= 43,93 cm
Y6 = 42,93 cm
Z1 = 27 cm
2 cm
B
(b = 474,16 kg/cm
10 cm
Z3 = 1cm
Z3 = 1cm
Z3 = 1cm