commit to user 32
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Panjang plafon ee’’ =
4999 ,
13 6288
, 13
1666 ,
4 x
an xnn
ae
= 4,2064 m
Panjang plafon dd’’ =
4999 ,
13 6288
, 13
12495 ,
3 x
an xnn
ad
= 3,1548 m
Panjang plafon cc’’ =
4999 ,
13 6288
, 13
0833 ,
2 x
an xnn
ac
= 2,1032 m
Panjang plafon bb’’ =
4999 ,
13 6288
, 13
0416 ,
1 x
an xnn
ab
= 1,0516 m
a. Luas plafon
ll’’n’’n =
. 2
l n
nn ll
= 04165
, 2
. 2
6288 ,
13 5676
, 11
= 25,7211 m
2
b. Luas plafon jj’’l’’l =
. 2
j l
ll jj
= 0833
, 2
. 2
5676 ,
11 4644
, 9
= 21,9080 m
2
c. Luas plafon hh’’j’’j =
. 2
h j
jj hh
= 0833
, 2
. 2
4644 ,
9 3612
, 7
= 17,5264 m
2
d. Luas plafon ff’’h’’h = .
2 f
h hh
ff
= 0833
, 2
. 2
3612 ,
7 2580
, 5
= 13,1448 m
2
e. Luas plafon dd’’f’’f =
. 2
d f
ff dd
commit to user 33
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= 0833
, 2
. 2
2580 ,
5 1548
, 3
= 8,7632 m
2
f. Luas plafon bb’’d’’d =
. 2
b d
dd bb
= 0833
, 2
. 2
1548 ,
3 0516
, 1
= 4,3816 m
2
g. Luas plafon abb’’ = ab
bb .
. 2
1
= 04165
, 1
. 0516
, 1
. 2
1 = 0,5477 m
2
3.3.3. Perhitungan Pembebanan Setengah Kuda-kuda
Data-data pembebanan : Berat gording
= 12,3 kgm Berat penutup atap
= 50 kgm
2
Berat plafon dan penggantung = 18 kgm
2
Berat profil kuda-kuda = 7,38 kgm
Hujan = 40-
0,8 γ = 14,4 kgm
2
Pembebanan setengah kuda-kuda akibat beban mati seperti terlihat pada Gambar 3.8.
commit to user 34
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Gambar 3.8. Pembebanan Setengah Kuda-kuda Akibat Beban Mati
a. Beban Mati Beban P
1
Beban gording =
Berat profil gording x Panjang Gording
mm’
= 12,3 x 12,6193 = 155,2174 kg
Beban atap = Luas atap
ll’’n’’n x Berat atap
= 30,2999 x 50 = 1514,995 kg
Beban kuda-kuda = ½ x Btg 1 + 7 x berat profil kuda kuda
= ½ x 2,4542 + 2,1564 x 7,38 = 17,013 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 17,013
= 5,104 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 17,013
commit to user 35
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= 1,701 kg Beban plafon
= Luas plafon
ll’’n’’n x berat plafon
= 25,7211 x 18 = 462,9798 kg
Beban P
2
Beban gording =
Berat profil gording x Panjang Gording
kk’’
= 12,3 x 10,5160 = 129,3468 kg
Beban atap = Luas atap
jj’’l’’l x berat atap
= 25,8084 x 50 = 1290,42 kg
Beban kuda-kuda = ½ x Btg 7 + 8 + 13 + 14 x berat profil kuda kuda
= ½ x 2,4542 + 2,4542 + 0,7406 + 2,0914 x 7,38 = 28,562 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 28,562
= 8,569 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 28,562
= 2,856 kg
Beban P
3
Beban gording =
Berat profil gording x Panjang Gording
ii’’
= 12,3 x 8,4128 = 103,4774 kg
Beban atap = Luas atap
hh’’j’’j x berat atap
= 20,6467 x 50 = 1032,335 kg
Beban kuda-kuda = ½ x Btg8 +9 +15 + 16 x berat profil kuda kuda
= ½ x 2,4542 + 2,4542 + 1,4811 + 2,2793 x 7,38 = 31,988 kg
commit to user 36
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Beban bracing = 10 x beban kuda-kuda
= 0,1 x 31,988 = 3,199 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 31,988
= 9,596 kg
Beban P
4
Beban gording =
Berat profil gording x Panjang Gording
gg’’
= 12,3 x 6,3096 = 77,6081 kg
Beban atap = Luas atap
ff’’h’’h x berat atap
= 15,4850 x 50 = 774,25 kg
Beban kuda-kuda = ½ x Btg9+10 + 17+18 x berat profil kuda kuda
= ½ x 2,4542+2.4542+2,2217+ 2,6670 x 7,38 = 36,151 kg
Beban bracing = 10 x beban kuda-kuda
= 0,1 x 36,151 = 3,615 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 36,151
= 10,845 kg
Beban P
5
Beban gording =
Berat profil gording x Panjang Gording
ee’’
= 12,3 x 4,2064 = 51,7387 kg
Beban atap = Luas atap
dd’’f’’f x berat atap
= 10,3233 x 50 = 516,165 kg
Beban kuda-kuda = ½ x Btg10+11+19+20 x berat profil kuda - kuda
commit to user 37
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= ½ x 2,4542+2,4542+2,9623+3,1824 x 7,38 = 40,786 kg
Beban bracing = 10 x beban kuda-kuda
= 0,1 x 40,786 = 4,079 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 40,786
= 12,236 kg
Beban P
6
Beban gording =
Berat profil gording x Panjang Gording
cc’’
= 12,3 x 2,1032 = 25,8694 kg
Beban atap = Luas atap
bb’’d’’d x berat atap
= 5,1617 x 50 = 258,085 kg
Beban kuda-kuda =½xBtg11+12+21x berat profil kuda kuda
= ½ x 2,4542+2,4542+3,7028 x 7,38 = 31,775 kg
Beban bracing = 10 x beban kuda-kuda
= 0,1 x 31,775 = 3,178 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 31,775
= 9,533 kg
Beban P
7
Beban gording =
Berat profil gording x Panjang Gording
aa’’b’’b
= 12,3 x 0,6452 = 32,26 kg
Beban kuda-kuda = ½ x Btg12+22+23 x berat profil kuda kuda
= ½x 2,4542+5,4167+5 x 7,38
commit to user 38
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
= 47,494 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 47,494
= 4,749 kg Beban plat sambung = 30 x beban kuda-kuda
= 0,3 x 47,494 = 14,248 kg
Beban P
8
Beban atap = Luas atap
jj’’l’’l x berat plafon
= 21,9080 x 18 = 394,344 kg
Beban kuda-kuda = ½ x Btg1+2+13 x berat profil kuda kuda
= ½ x 2,1564+2,1564+0,7406 x 7,38 = 18,647 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 18,647
= 5,594 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 18,647
= 1,865 kg
Beban P
9
Beban plafon = Luas plafon
hh’’j’’j x berat plafon
= 17,5264 x 18 = 315,4752 kg
Beban kuda-kuda = ½ x Btg2 + 3 + 14 + 15 x berat profil kuda kuda
= ½ x 2,1564 + 2,1564 + 2,0914+1,4811 x 7,38 = 29,097 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 29,097
= 8,729 kg
commit to user 39
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Beban bracing = 10 x beban kuda-kuda
= 0,1 x 29,097 = 2,91 kg
Beban P
10
Beban plafon = Luas plafon
ff’’h’’h x berat plafon
= 13,1448 x 18 = 236,6064 kg
Beban kuda-kuda = ½ x Btg3+4+16+17 x berat profil kuda kuda
= ½ x 2,1564 + 2,1564 + 2,2793+ 2,2217 x 7,38 = 32,523 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 32,523
= 9,757 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 32,523
= 3,25 kg
Beban P
11
Beban plafon = Luas plafon
dd”f”f x berat plafon
= 8,7632 x 18 = 157,7376 kg
Beban kuda-kuda = ½ x Btg4+5+18+19 x berat profil kuda kuda
= ½ x 2,1564 + 2,1564 + 2,6670+2,9623 x 7,38 = 36,686 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 36,686
= 11,006 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 36,686
= 3,669 kg
Beban P
12
commit to user 40
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Beban plafon = Luas plafon
bb”d”d x berat plafon
= 4,3816 x 18 = 78,8688 kg
Beban kuda-kuda = ½ x Btg5+6+20+21+22 x berat profil kuda kuda
= ½ x 2,1564+2,0833+3,1824+3,7028+5,4167 x 7,38 = 61,039 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 61,039
= 18,312 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 61,039
= 6,104 kg
Beban P
13
Beban plafon = Luas plafon
abb” x berat plafon
= 0,5477 x 18 = 9,8586 kg
Beban kuda-kuda = ½ x Btg6+23 x berat profil kuda kuda
= ½ x 2,0833+5 x 7,38 = 26,137 kg
Beban plat sambung = 30 x beban kuda-kuda = 0,3 x 26,137
= 7,841 kg Beban bracing
= 10 x beban kuda-kuda = 0,1 x 26,137
= 2,614 kg
Rekapitulasi beban mati disajikan dalam Tabel 3.3. dibawah ini :
Tabel 3.3. Rekapitulasi Beban Mati
commit to user 41
Tugas akhir Perencanaan Struktur Gedung Swalayan 2 Lantai RAB
BAB 3 Perencanaan Atap
Beban Beban
Atap kg
Beban gording
kg Beban
Kuda- kuda
kg Beban
Bracing kg
Beban Plat
Penyam bung
kg Beban
Plafon kg
Jumlah Beban
kg Input
SAP 2000
kg P1
1514,99 155,217 17,013
1,701 5,104
462,98 2157,01
2158 P2
1290,42 129,35
28,562 2,856
8,569 -
1459,75 1460
P3 1032,34 1032,48
31,988 3,199
9,596 -
1180,60 1181
P4 774,25
77,608 36,151
3,615 10,845
- 902,47
903 P5
516,17 51,738
40,786 4,079
12,236 -
625,01 626
P6 258,08
25,869 31,775
3,178 9,533
- 328,44
329 P7
32,26 -
47,494 4,749
14,248 -
98,75 99
P8 -
- 18,647
1,865 5,594
397,34 420,45
421 P9
- -
29,097 2,91
8,729 315,47
356,21 357
P10 -
- 32,523
3,25 9,757
236,61 282,14
283 P11
- -
36,686 3,69
11,006 157,74 209,10
210 P12
- -
61,039 6,104
18,312 78,868 164,324
165 P13
- -
26,137 2,614
7,841 9,858
46,45 47
b. Beban Hidup
