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Tugas Akhir Perencanaan Struktur Gedung Restoran 2 Lantai
Bab 3 Perencanaan Atap
9 10
11 12
13 14
15 16
1 2
3 4
5 6
7 8
29 28
27 26
25 24
23 22
21 20
19 18
17 P1
P2 P3
P4 P5
P6 P7
P8 P9
P16 P15
P14 P13
P12 P11
P10
Luas cdef =
2 de
cf
× cd
=
2
875 ,
1 343
, 2
× 0,937 = 1,976 m
2
3.5.3. Perhitungan Pembebanan Kuda-kuda Trapesium
Data-data pembebanan : Berat gording
= 11 kgm Berat penutup atap
= 50 kgm
2
Berat profil = 25 kgm
Gambar 3.15. Pembebanan Kuda-kuda Trapesium akibat Beban Mati
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Tugas Akhir Perencanaan Struktur Gedung Restoran 2 Lantai
Bab 3 Perencanaan Atap a.
Beban Mati
1 Beban P1 = P9 a Beban gording
= Berat profil gording × Panjang Gording
= 11 × 3,75 = 41,25 kg b Beban atap
= Luasan × Berat atap = 7,288 × 50 = 364,4 kg
c Beban plafon =
Luasan × berat plafon = 3,163 × 18 = 56,93 kg
d Beban kuda-kuda = ½ × Btg 1 + 9 × berat profil kuda kuda
= ½ × 1,875 + 2,165 × 25 = 50,5 kg
e Beban plat sambung = 30 × beban kuda-kuda
= 30 × 50,5 = 15,15 kg
f Beban bracing = 10
× beban kuda-kuda = 10
× 50,5 = 5,05 kg
2 Beban P2 = P8 a Beban gording
= Berat profil gording × Panjang Gording
= 11 × 2,820 = 31,02 kg b Beban atap
= Luasan × Berat atap = 5,272 × 50 = 263,6 kg
c Beban kuda-kuda = ½ × Btg 9+17+18+10 × berat profil kuda kuda
= ½ × 2,165 + 1,083 + 2,165 + 2,165 × 25 = 94,725 kg
d Beban plat sambung = 30 × beban kuda-kuda
= 30 × 94,725 = 28,417 kg
e Beban bracing = 10
× beban kuda-kuda = 10
× 94,725 = 9,472 kg
3 Beban P3 = P7
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Tugas Akhir Perencanaan Struktur Gedung Restoran 2 Lantai
Bab 3 Perencanaan Atap
a Beban gording =
Berat profil gording × Panjang Gording = 11 × 1,875 = 20,625 kg
b Beban atap = Luasan × Berat atap
= 1,976 × 50 = 98,8 kg c Beban kuda-kuda
= ½ × Btg 10+19+20+11 × berat profil kuda kuda = ½ × 2,165 + 2,165 + 2,864 + 1,875 × 25
= 113,362 kg d Beban plat sambung = 30
× beban kuda-kuda = 30
× 113,362 = 34,009 kg e Beban bracing
= 10 × beban kuda-kuda
= 10 × 113,362 = 11,336 k
f Beban reaksi = reaksi jurai
= 2630,62 kg
4 Beban P4 = P6 a Beban kuda-kuda
= ½ × Btg 11+21+22+12 × berat profil kuda kuda = ½ × 1,875 + 2,165 + 2,864 + 1,875 × 25
= 109,737 kg b Beban plat sambung = 30
× beban kuda-kuda = 30
× 109,737 = 32,921 kg c Beban bracing
= 10 × beban kuda-kuda
= 10 × 109,737 = 10,974 kg
5 Beban P5 a Beban kuda-kuda
= ½ × Btg 12 + 23 + 13 × berat profil kuda kuda = ½ × 1,875 + 2,165 + 1,875 × 25
= 73,937 kg b Beban plat sambung = 30
× beban kuda-kuda = 30
× 73,937 = 22,181 kg c Beban bracing
= 10 × beban kuda-kuda
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Tugas Akhir Perencanaan Struktur Gedung Restoran 2 Lantai
Bab 3 Perencanaan Atap
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