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Pe re nc a na a n Struktur Ba ng una n Se ko la ha n 2 La nta i
BAB 3 Perencanaan Atap • Luas bluwnd = Luas dnwypf = Luas fpya’rh
= at x ac
= 4,25 x 2,165 = 9,201 m
2
• .Luas hra’c’j = at x hj =
4,25 x 2,633 = 11,178 m
2
Gambar 3.22. Luasan Plafon Kuda-kuda Utama
Panjang ks = 4 x 1,875 = 7,5 m
Panjang hi = 0,9325 m
Panjang ij = 1 m
Panjang aj = ks + ij
= 7,5 + 1 = 8,5 m Panjang ac
= 1,875 m Panjang ak
= 2,25 m Panjang kt
= 2 m Panjang at
= 4,25 m
a b
c d
e f
g h
i j
k l
m n
o p
q r
s t
u v
w x
y z
a b
c
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Tugas Akhir
Pe re nc a na a n Struktur Ba ng una n Se ko la ha n 2 La nta i
BAB 3 Perencanaan Atap
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
29 28
27 26
25 24
23 22
21 20
19 18
17 P1
P2 P3
P4 P5
P6 P7
P8 P9
P10 P11
P12 P13
P14 P15
P16
• Luas aktulb = at × ab
= 4,25 × 0,9325 = 3,963 m
2
• Luas bluwnd = Luas dnwypf = Luas fpya’rh =
at x ac = 4,25 x 1,875 = 7,756 m
2
• .Luas hra’c’j = at x hj =
4,25 x 1,9325 = 8,213 m
2
3.7.3. Perhitungan Pembebanan Kuda-kuda Utama
Data-data pembebanan : Berat gording
= 29,4 kgm Jarak antar kuda-kuda utama = 4,50 m
Berat penutup atap = 50 kgm
2
Berat profil = 25 kgm
Berat plafon = 18 kgm
2
Gambar 3.23. Pembebanan Kuda- kuda Utama akibat Beban Mati a. Beban Mati
1 Beban P1 = P9
a Beban gording
= Berat profil gording × Panjang Gording
= 29,4 × 4,5 = 132,30 kg
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Pe re nc a na a n Struktur Ba ng una n Se ko la ha n 2 La nta i
BAB 3 Perencanaan Atap
b Beban atap
= Luasan × Berat atap = 11,178 × 50 = 558,9 kg
c Beban plafon
= Luasan × berat plafon
= 8,213 × 18 = 147,834 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-k1uda = 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 = 29,4 × 4,5 = 132,30 kg
b Beban atap
= Luasan × Berat atap = 9,201 × 50 = 460,05 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 = 28,41 kg
e Beban bracing
= 10 × beban kuda-kuda
= 10
× 94,725 = 9,47 kg 3
Beban P3 = P7 a
Beban gording =
Berat profil gording × Panjang Gording = 29,4 × 4,5 = 132,30 kg
b Beban atap
= Luasan × Berat atap = 9,201 × 50 = 460,05 kg
c Beban kuda-kuda = ½ × Btg 10+19+20+11 × berat profil kuda kuda
= ½ × 2,165 + 2,165 + 2,864 + 2,165 × 25 = 116,99 kg
d Beban plat sambung = 30
× beban kuda-kuda
commit to user
Tugas Akhir
Pe re nc a na a n Struktur Ba ng una n Se ko la ha n 2 La nta i
BAB 3 Perencanaan Atap
