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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
3.4.3.1. Perhitungan Beban
1. Beban Mati
a. Beban P
1
1. Beban gording =
berat profil gording × panjang gording br
= 11 × 5 = 55 kg
2. Beban atap = luas atap cqas × berat atap
= 10,292 × 50 = 514,6 kg
3. Beban plat sambung = 30 × beban kuda-kuda = 30 × 9,38
= 2,814 kg 4. Beban bracing
= 10 × beban kuda-kuda = 10 × 9,38
= 0,938 kg 5. Beban plafond
= luas plafond cqas × berat plafond
= 8,430 × 18 = 151,74 kg
b. Beban P
2
1. Beban gording =
berat profil gording × panjang gording dp
= 11 × 3,750 = 41,25 kg
2. Beban atap = luas atap eocq × berat atap
= 5,723 × 50 = 286,15 kg
3. Beban plat sambung = 30 × beban kuda-kuda = 30 × 18,43
= 5,529 kg
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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
4. Beban bracing = 10 × beban kuda-kuda
= 10 × 18,43 = 1,843 kg
c. Beban P
3
1. Beban gording =
berat profil gording × panjang gording fn
= 11 × 2,50 = 27,50 kg
2. Beban atap = luas atap gmeo × berat atap
= 3,185 × 50 = 159,25 kg
3. Beban plat sambung = 30 × beban kuda-kuda = 30 × 23,51
= 7,053 kg 4. Beban bracing
= 10 × beban kuda-kuda = 10 × 23,51
= 2,351 kg d. Beban P
4
1. Beban gording =
berat profil gording × panjang gording hl
= 11 × 1,25 = 13,75 kg
2. Beban atap = luas atap ikgm × berat atap
= 1,908 × 50 = 95,4 kg
3. Beban plat sambung = 30 × beban kuda-kuda = 30 × 29,02
= 8,706 kg 4. Beban bracing
= 10 × beban kuda-kuda = 10 × 29,02
= 2,902 kg
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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
e. Beban P
5
1. Beban atap = luas atap jik × berat atap
= 0,238 × 50 = 11,9 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 16,99
= 5,097 kg 3. Beban bracing
= 10 × beban kuda-kuda = 10 × 16,99
= 1,699 kg f. Beban P
6
1. Beban plafond =
luas plafond eocq × berat plafond
= 4,688 × 18 = 84,38 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 11,41
= 3,423 kg 3. Beban bracing
= 10 × beban kuda-kuda = 10 × 11,41
= 1,141 kg g. Beban P
7
1. Beban plafond = luas plafond gmeo × berat plafond
= 3,125 × 18 = 56,25 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 19,53
= 5,859 kg 3. Beban bracing
= 10 × beban kuda-kuda = 10 × 19,53
= 1,953 kg
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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
h. Beban P
8
1. Beban plafond = luas plafond ikgm × berat plafond
= 1,563 × 18 = 28,13 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 24,6
= 7,38 kg 3. Beban bracing
= 10 × beban kuda-kuda = 10 × 24,6
= 2,46 kg i. Beban P
9
1. Beban plafond =
luas plafond jik × berat plafond
= 0,915 × 18 = 16,47 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 25,89
= 7,767 kg 3. Beban bracing
= 10 × beban kuda-kuda = 10 × 25,89
= 2,589 kg
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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
Tabel 3.3. Rekapitulasi Beban Mati Setengah Kuda-Kuda
Beban Beban
Gording kg
Beban Atap
kg Beban Plat
Sambung kg
Beban Bracing
kg Beban
Plafond kg
Jumlah Beban
kg Input
SAP kg
P
1
55 514,6
2,814 0,938
151,74 725,09
726 P
2
41,25 286,15
5,529 1,843
--- 334,77
335 P
3
27,5 159,25
7,053 2,351
--- 196,15
197 P
4
13,75 95,4
8,706 2,902
--- 120,76
121 P
5
--- 11,9
5,097 1,699
--- 18,7
19 P
6
--- ---
3,423 1,141
84,38 88,94
89 P
7
--- ---
5,859 1,953
56,25 64,06
65 P
8
--- ---
7,38 2,46
28,13 37,97
38 P
9
--- ---
7,767 2,589
16,47 26,83
23
2. Beban Hidup
Beban hidup yang bekerja pada P
1
, P
2
, P
3
, P
4,
P
5
= 100 kg
3. Beban Hujan
a. Beban P
1
= beban hujan × luas atap cqas
= 12 × 10,292 = 123,504 kg
b. Beban P
2
= beban hujan × luas atap eocq
= 12 × 5,723 = 68,676 kg
c. Beban P
3
= beban hujan × luas atap gmeo
= 12 × 3,185 = 38,22 kg
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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
d. Beban P
4
= beban hujan × luas atap ikgm
= 12 × 1,908 = 22,896 kg
e. Beban P
5
= beban hujan × luas atap jik
= 12 × 0,238 = 2,856 kg
Tabel 3.4. Rekapitulasi Beban Hujan Setengah Kuda-Kuda Beban
Beban Hujan kg
Input SAP kg
P
1
123,504 124
P
2
68,676 69
P
3
38,22 39
P
4
22,896 23
P
5
2,856 3
4. Beban Angin
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