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Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Panjang
ee’ = 2,0972 m
Panjang
ff’ = 2,6192 m
Panjang
gg’ = 3,1412 m
Panjang
hh’ = 3,6632 m
Panjang
ii’
= 4,1852 m Panjang
jj’ = 4,7072 m
Panjang
kk’ = 5,2293 m
Panjang
ll’
= 5,7468 m Panjang
mm’ = 6,2643 m
Panjang
nn’ = 6,8155 m
a. Luas plafond ll”n”n =
ln 2
n n
n l
nn ll
= 04165
, 2
5 ,
2 04165
, 2
2 8155
, 6
7468 ,
5 = 17,9280 m
2
b. Luas plafond jj”l”l =
2 jj
l l
l j
ll jj
= 0833
, 2
5 ,
2 0833
, 2
2 7468
, 5
7072 ,
4 = 16,0976 m
2
c. Luas plafond hh”j”j =
2 j
h j
j j
h jj
hh
= 0833
, 2
5 ,
2 0833
, 2
2 7072
, 4
6632 ,
3 = 13,9272 m
2
d. Luas plafond ff”h”h =
h f
h h
h f
hh ff
2 =
0833 ,
2 5
, 2
0833 ,
2 2
6632 ,
3 6192
, 2
commit to user 123
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= 11,7523 m
2
e. Luas plafond dd”f”f =
2 f
d f
f f
d ff
dd
= 0833
, 2
5 ,
2 0833
, 2
2 6192
, 2
5752 ,
1 = 9,5773 m
2
f. Luas plafond bb”d”d =
2 d
b d
d d
b dd
bb
= 0833
, 2
5 ,
2 0833
, 2
2 5752
, 1
5266 ,
= 7,3975 m
2
g. Luas plafond aa”b”b =
2 1
ab b
b ab
bb
= 04165
, 1
5 ,
2 04165
, 1
5266 ,
2 1
= 2,8784 m
2
3.7.3. Perhitungan Pembebanan Kuda-kuda Utama
Data-data pembebanan : Berat gording
= 12,3 kgm
2
Jarak antar kuda-kuda utama = 5 m Berat penutup atap
= 50 kgm
2
Berat profil = 28,4 kgm
Berat Penggantung da n Plafon = 18 kgm
2
Beban Hujan = 40-
0,8 γ = 14,4 kgm
2
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Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Gambar 3.28. Pembebanan Kuda- kuda Utama akibat Beban Mati
a. Beban Mati Beban P1 = P13
Beban gording =
Berat profil gording × Panjang Gording
mm”
= 12,3 × 8,7643 = 107,8009 kg Beban atap
= Luas Atap
ll”n”n × Berat atap
= 21,1195 × 50 = 1055,975 kg Beban plafon
= Luas Plafon
ll”n”n × berat plafon
= 21,1195 × 18 = 380,151 kg Beban kuda-kuda
= ½ × Btg 1 + 13 × berat profil kuda kuda = ½ × 2,15464 + 2,4542 × 28,4
= 65,45 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 65,45 = 19,633 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 65,45 = 6,545 kg
Beban P2 = P12
Beban gording =
Berat profil gording × Panjang Gording kk
” = 12,3 × 7,7293 = 95,0704 kg
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Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Beban atap = Luas Atap
jj”l”l × Berat atap
= 18,9636 × 50 = 948,18 kg Beban kuda-kuda
= ½ × Btg 13+14+25+26 × berat profil kuda kuda = ½ × 2,4542+2.,4542+0,7406+2,0914 × 28,4
= 109,91 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 109,91 = 29,0265 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 109,91 = 10,991 kg
Beban P3 = P11
Beban gording =
Berat profil gording × Panjang Gording
ii”
= 12,3 × 6,6852 = 82,2280 kg Beban atap
= Luas
hh”j”j × Berat atap
= 16,4068 × 50 = 820,34 kg Beban kuda-kuda
= ½ × Btg 14+15+27+28 × berat profil kuda kuda = ½ × 2,4542+2,4542+1,4811+2,2793 × 28,4
= 108,36 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 108,36 = 32,508 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 108,36 = 10,836 kg
Beban P4 = P10
Beban gording =
Berat profil gording × Panjang Gording
gg”
= 12,3 × 5,6412 = 69,3868 kg Beban atap
= Luas
ff”h”h × Berat atap
= 13,8446 × 50 = 692,23 kg Beban kuda-kuda
= ½ × Btg 15+16+29+30 × berat profil kuda kuda = ½ × 2,4542+2,4542+2,2217+2,6670 × 28,4
= 122,4637 kg
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Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Beban plat sambung = 30 × beban kuda-kuda = 30 × 122,4637 = 36,7391 kg
Beban bracing = 10 × beban kuda-kuda
= 10 × 122,4637 = 12,2464 kg
Beban P5 = P9
Beban gording =
Berat profil gording × Panjang Gording
ee”
= 12,3 × 4,5972 = 56,5456 kg Beban atap
= Luas Atap
dd”f”f × Berat atap
= 11,2824 × 50 = 564,12 kg Beban kuda-kuda
= ½ × Btg 16+17+31+32 × berat profil kuda kuda = ½ × 2,4542+2,4542+2,9623+3,1824 × 28,4
= 138,1637 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 138,1637 = 41,4491 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 138,1637 = 13,8164 kg
Beban P6 = P8
Beban gording =
Berat profil gording × Panjang Gording
cc”
= 12,3 × 3,5532 = 43,7044 kg Beban atap
= Luas Atap
bb”d”d × Berat atap
= 8,7146 × 50 = 435,73 kg Beban kuda-kuda
= ½ × Btg 17+18+33 × berat profil kuda kuda = ½ × 2,4542+2,4542+3,7028 × 28,4
= 107,64 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 107,64 = 32,292 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 107,64 = 10,764 kg
Beban P7
Beban atap = Luas Atap
aa”b”b × Berat atap
commit to user 127
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= 3,3908× 50 = 169,54 kg Beban kuda-kuda
= ½×Btg18+19+34+35+36×berat profil kuda kuda = ½ × 2,4542+2,4542+5,4167+5+5,4167 × 28,4
= 259,2725 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 259,2725 = 77,7817 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 259,2725 = 25,9273 kg
Beban reaksi = 2×reaksi jurai+reaksi setengah kuda-kuda
= 2×203,60 + 182,72 = 589,92 kg
Beban P14 = P24
Beban plafon = Luas Atap
jj”l”l × Berat plafon
= 16,0976 × 18 = 289,7568 kg Beban kuda-kuda
= ½ × Btg 1+2+25 × berat profil kuda kuda = ½ × 2,1564+2,1564+0,7406 × 28,4
= 63,1675 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 63,1675= 18,9502 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 63,1675 = 6,3168 kg
Beban P15 = P23
Beban plafon = Luas Atap
hh”j”j × Berat plafon
= 13,9272 × 18 = 250,6896 kg Beban kuda-kuda
= ½ × Btg 2+3+26+27 × berat profil kuda kuda = ½ × 2,1564+2,1564+2,0914+1,4811 × 28,4
= 98,5662 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 98,5662 = 29,5698 kg Beban bracing
= 10 × beban kuda-kuda
commit to user 128
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= 10 × 98,5662 = 9,8566kg
Beban P16 = P22
Beban plafon = Luas Atap
ff”h”h × Berat plafon
= 11,7523 × 18 = 211,5414 kg Beban kuda-kuda
= ½ × Btg 3+4+28+29 × berat profil kuda kuda = ½ × 2,1564+2,1564+2,2793+2,2217 × 28,4
= 66,5442 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 66,5442= 19,9633 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 66,5442 = 6,6544 kg
Beban P17 = P21
Beban plafon = Luas Atap
dd”f”f × Berat plafon
= 9,5773 × 18 = 172,3914 kg Beban kuda-kuda
= ½ × Btg 4+5+30+31 × berat profil kuda kuda = ½ × 2,1564+2,1564+2,6670+2,9623 × 28,4
= 124,2212 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 124,2212= 37,2663 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 124,2212 = 12,4221 kg
Beban P18 = P20
Beban plafon = Luas Atap bb”d”d × Berat plafon
= 7,3975× 18 = 133,155 kg Beban kuda-kuda
= ½ × Btg 5+6+32+33+34× berat profil kuda kuda = ½ × 2,1564+2,0833+3,1824+3,7028 × 28,4
= 206,77 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 139,0612= 41,7183 kg Beban bracing
= 10 × beban kuda-kuda
commit to user 129
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= 10 × 139,0612 = 13,9061kg
Beban P19
Beban plafon = Luas Atap
aa”b”b × Berat plafon
= 2,8784× 18 = 51,8112 kg Beban kuda-kuda
= ½ × Btg 6+7+35× berat profil kuda kuda = ½ × 2,0833+2,0833+5 × 28,4
= 114,5825 kg Beban plat sambung = 30 × beban kuda-kuda
= 30 × 114,5825= 34,3747 kg Beban bracing
= 10 × beban kuda-kuda = 10 × 114,5825 = 11,4583 kg
Beban reaksi = 2×reaksi jurai+reaksi setengah kuda-kuda
= 2×9057,09 + 7574,56 =25688,74 kg
Tabel 3.19. Rekapitulasi Beban Mati Kuda-kuda Utama
Beban Beban
Atap kg
Beban gording
kg Beban
Kuda - kuda
kg Beban
Bracing kg
Beban Plat Penyambung
kg Beban
Plafon kg
Jumlah Beban
kg Input
SAP kg
P1=P13 1055,975
107,8 57,6325 5,7633
17,2897 380,151 1624,61 1625
P2=P12 948,18
95,0704 96,755 9,6755
17,532 -
1178,71 1179
P3=P11 820,34
82,228 108,36 10,836
32,508 -
1054,27 1055
P4=P10 692,23
69,3868 122,4638 12,2464 36,7391 -
933,0661 934
P5=P9 564,12
56,5456 138,1638 13,8164 41,4491 -
819,0949 820
P6=P8 435,73
43,7044 107,64 10,764
32,292 -
630,1304 631
P7 169,54
- 259,2725 25,9273 77,7817
- 1122,4415
1123 P14=P24
- -
63,1675 6,3168 18,9502 289,757 378,1914
379 P15=P23
- -
98,5662 9,8566 29,5666 250,689 388,6824
389
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Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
P16=P22 -
- 110,1725 11,4583 34,3748 211,541 365,783
366 P17=P21
- -
124,2763 12,4276 37,2829 172,391 346,3782 347
P18=P20 -
- 206,77 20,677
62,031 133,155 422,633
423 P19
- -
114,5825 11,4583 34,3747 51,8112 25889,508 25890
b. Beban Hidup
