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3.6.3. Perhitungan Pembebanan Kuda-Kuda Utama B
Data pembebanan : Berat gording
= 11 kgm Berat penutup atap
= 50 kgm
2
Berat penggantung dan plafond = 18 kgm
2
Beban hujan = 40 –
0,8α kgm
2
= 40 – 0,8 × 35 = 12 kgm
2
Gambar 3.22. Pembebanan Kuda-Kuda Utama B Akibat Beban Mati
3.6.3.1. Perhitungan Beban
1. Beban Mati
a. Beban P
1
= P
9
1. Beban gording =
berat profil gording × panjang gording is
= 11 × 4,5 = 49,5 kg
2. Beban atap = luas atap hrtj × berat atap
= 9,114 × 50 = 455,7 kg
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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
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 hrtj × berat plafond
= 7,465 × 18 = 134,37 kg
b. Beban P
2
= P
8
1. Beban gording =
berat profil gording × panjang gording gq
= 11 × 3,875 = 42,625 kg
2. Beban atap = luas atap fprh × berat atap
= 5,914 × 50 = 295,7 kg
3. Beban plat sambung = 30 × beban kuda-kuda = 30 × 18,43
= 5,529 kg 4. Beban bracing
= 10 × beban kuda-kuda = 10 × 18,43
= 1,843 kg c. Beban P
3
= P
7
1. Beban gording =
berat profil gording × panjang gording eo
= 11 × 3,25 = 35,75 kg
2. Beban atap = luas atap dnpf × berat atap
= 4,960 × 50 = 248 kg
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Tugas Akhir Perencanaan Struktur Gedung Sekolah 2 Lantai RAB
BAB 3 PERENCANAAN ATAP
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
= P
6
1. Beban gording =
berat profil gording × panjang gording cm
= 11 × 2,625 = 28,875 kg
2. Beban atap = luas atap blnd × berat atap
= 4,007 × 50 = 200,35 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 e. Beban P
5
1. Beban atap = luas atap aklb × berat atap
= 1,645 × 50 = 82,25 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 22,15
= 6,645 kg 3. Beban bracing
= 10 × beban kuda-kuda = 10 × 22,15
= 2,215 kg
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4. Beban reaksi = 2 × reaksi jurai + reaksi setengah kuda-kuda
= 2 × 179,40 + 721,91 = 1080,71 kg
f. Beban P
10
= P
16
1. Beban plafond =
luas plafond fprh × berat plafond
= 4,844 × 18 = 87,192 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
11
= P
15
1. Beban plafond = luas plafond dnpf × berat plafond
= 4,063 × 18 = 73,134 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 h. Beban P
12
= P
14
1. Beban plafond = luas plafond blnd × berat plafond
= 3,282 × 18 = 59,076 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 24,6
= 7,38 kg
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3. Beban bracing = 10 × beban kuda-kuda
= 10 × 24,6 = 2,46 kg
i. Beban P
13
1. Beban plafond =
luas plafond aklb × berat plafond
= 1,348 × 18 = 24,264 kg
2. Beban plat sambung = 30 × beban kuda-kuda = 30 × 39,94
= 11,982 kg 3. Beban bracing
= 10 × beban kuda-kuda = 10 × 39,94
= 3,994 kg
Tabel 3.20. Rekapitulasi Beban Mati Kuda-Kuda Utama B
Beban Beban
Gording kg
Beban Atap
kg Beban
Plat Sambung
kg Beban
Bracing kg
Beban Plafond
kg Beban
Reaksi kg
Jumlah Beban
kg Input
SAP kg
P
1
= P
9
49,5 455,7
2,814 0,938
134,37 ---
643,32 644
P
2
= P
8
42,625 295,7
5,529 1,843
--- ---
345,7 346
P
3
= P
7
35,75 248
7,053 2,351
--- ---
293,15 294
P
4
= P
6
28,875 200,35
8,706 2,902
--- ---
240,83 241
P
5
--- 82,25
6,645 2,215
--- 1080,71
1171,82 1172
P
10
= P
16
--- ---
3,423 1,141
87,192 ---
91,76 92
P
11
= P
15
--- ---
5,859 1,953
73,134 ---
80,95 81
P
12
= P
14
--- ---
7,38 2,46
59,076 ---
68,92 69
P
13
--- ---
11,982 3,994
24,264 ---
40,24 41
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2. Beban Hidup
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