Tugas Akhir
Perencanaan Struktur Gedung Kantor Pajak 2 lantai
BAB 6 Balok Anak
109
= 87,875 kg b
Beban plat sambung = 30 × beban kuda-kuda = 30 × 87,875 = 26,363 kg
c Beban bracing
= 10 × beban kuda-kuda = 10 × 87,875 = 8,7875 kg
5 Beban P
5
a Beban kuda-kuda = ½ × Btg12 + 13 + 23 × berat profil kuda kuda
= ½ × 1,50 + 1,50 + 1,73 × 25 = 59,125 kg
d Beban plat sambung = 30 × beban kuda-kuda = 30 × 59,125 = 17,738 kg
c Beban bracing = 10 × beban kuda-kuda
= 10 × 59,125 = 5,9125 kg d Beban reaksi
= reaksi setengah kuda-kuda = 1145 kg 6
Beban P
10
= P
16
a Beban kuda-kuda
= ½ × Btg1+17+2 × berat profil kuda kuda = ½ × 1,5 + 0,87 + 1,5 × 25
= 48,375 kg b
Beban bracing = 10 × beban kuda-kuda
= 10 × 48,375 = 4,838 kg c
Beban plafon =
½ × Btg 1 + 2 × berat plafon = ½ × 3,00 × 50 = 75 kg
d Beban plat sambung = 30 × beban kuda-kuda
= 30 × 48,375 = 14,51 kg 7
Beban P
11
= P
15
a Beban kuda-kuda
= ½ × Btg 2 +18+19+3 x berat profil kuda-kuda = ½ × 1,5+1,73+1,73+1,5 x 25
= 68,25 kg b
Beban bracing = 10 × beban kuda-kuda
= 10 × 68,25 = 6,825 kg c
Beban plafon =
½ × Btg 2 + 3 x berat plafon = ½ × 3,00 x 50 = 75 kg
Tugas Akhir
Perencanaan Struktur Gedung Kantor Pajak 2 lantai
BAB 6 Balok Anak
110
d Beban plat sambung = 30 × beban kuda-kuda
= 30 × 68,25 = 20,48 kg e Beban reaksi
= Reaksi setengah kuda-kuda = 1145
kg 8
Beban P
12
= P
14
a Beban kuda-kuda = ½ × Btg 3 +20+21+4 × berat profil kuda-kuda
= ½ × 1,5+2,3+1,73+1,5 × 25 = 87,875 kg
b Beban bracing = 10 × beban kuda-kuda
= 10 × 87,875 = 8,788 kg c Beban plafon
= ½ × Btg 3 + 4 × berat plafon
= ½ × 3,00 x 50 = 75 kg e
Beban plat sambung = 30 × beban kuda-kuda = 30 × 87,875 = 26,36 kg
9 Beban P
13
a Beban kuda-kuda = ½ × Btg 4+22+23+24+5× berat profil kuda kuda
= ½ × 1,5+2,3+1,73+2,3+1,5 × 25 = 116,625 kg
b Beban bracing = 10 × beban kuda-kuda
= 10 × 116,652 = 11,665 kg c Beban plafon
= ½ × Btg 4 + 5 × berat plafon
= ½ × 3,00 × 50 = 75 kg d Beban plat sambung = 30 × beban kuda-kuda
= 30 × 116,652 = 34,988 kg e Beban reaksi
= R.setengah kuda-kuda + R. Kuda-kuda trapesium2 = 2042,69 kg
Tabel 3.18. Rekapitulasi pembebanan kuda-kuda trapesium
Beban Beban
Atap kg
Beban gordin
g kg
Beban Kuda-
kuda kg
Beban Bracin
g kg
Beban Plat
Sambun g
kg Beban
Plafon
kg Beban
Reaksi kg
Jumla h
Beban kg
Input SAP200
kg P
1
=P
9
309,5 19,03
40,375 4,038
12,11 96,48
--- 481,533 482
Tugas Akhir
Perencanaan Struktur Gedung Kantor Pajak 2 lantai
BAB 6 Balok Anak
111
1 2
3 4
5 6
7 8
9 10
16 15
11 12
13 14
17 19
21 23
25 27
18 20
22 26
24 29
28
W1 W2
W3 W4
W5 W6
P
2
=P
8
195 19,03
54,125 5,413
16,24 ---
--- 289,808
290
P
3
=P
7
146 19,03
90,75 9,075
27,23 ---
728 1020,09 1021
P
4
=P
6
--- ---
87,875 8,788
26,363 ---
--- 123,026
124
P
5
--- ---
59,125 5,913
17,738 ---
1145 1227,77
6
1228
P
10=
P
16
--- ---
48,375 4,838
14,51 75
--- 142,723
143
P
11
=P
1 5
--- ---
68,25 6,825
20,48 75
1145 1315,55
5
1316
P
12
=P
1 4
--- ---
87,875 8,788
26,36 75
--- 198,023
199
P
13
--- ---
116,65 2
11,665 34,988
75 2042,69
2280,99 2281
Ø
Beban Hidup
Beban hidup yang bekerja pada P
1
, P
2
, P
4
, P
5,
P
6
, P
8
, dan P
9
=100 kg
Ø
Beban Angin
Perhitungan beban angin :
Gambar 3.18. Pembebanan Kuda- Kuda Trapesium Akibat Beban Angin Beban angin kondisi normal, minimum = 25 kgm
2
1 Koefisien angin tekan = 0,02a - 0,40
= 0,02 × 30° – 0,40 = 0,2 a W
1
= luasan × koef. angin tekan × beban angin
= 5,36 × 0,2 × 25 = 26,8 kg b
W
2
= luasan × koef. angin tekan × beban angin
= 3,38 × 0,2 × 25 = 16,9 kg
Tugas Akhir
Perencanaan Struktur Gedung Kantor Pajak 2 lantai
BAB 6 Balok Anak
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