commit to user 30
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
Panjang plafon m’n’ =1 m
Panjang plafon an’ =12,4998 + 1 = 13,4998 m
Panjang plafon n’l’ =1,04165 + 1 = 2,04156 m
Panjang plafon p’j’ =j’h’ = h’f’ = f’d’ = d’b’ = a’c’ = 2,0833 m
Panjang plafon nn’’ =13,6288 m
Panjang plafon mm’’ =
4999 ,
13 6288
, 13
4998 ,
12 x
an xnn
am = 12,6193 m
Panjang plafon ll’’ =
4999 ,
13 6288
, 13
45815 ,
11 x
an xnn
at = 11,5676 m
Panjang plafon kk’’ =
4999 ,
13 6288
, 13
4165 ,
10 x
an xnn
ak = 10,5160 m
Panjang plafon jj’’ =
4999 ,
13 6288
, 13
37485 ,
9 x
an xnn
aj = 9,4644 m
Panjang plafon ii’’ =
4999 ,
13 6288
, 13
3332 ,
8 x
an xnn
ai = 8,4128 m
Panjang plafon hh’’ =
4999 ,
13 6288
, 13
29155 ,
7 x
an xnn
ah = 7,3612 m
Panjang plafon gg’’ =
4999 ,
13 6288
, 13
2499 ,
6 x
an xnn
ag = 6,3096 m
Panjang plafon ff’’ =
4999 ,
13 6288
, 13
20825 ,
5 x
an xnn
af = 5,2580 m
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
commit to user 31
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
=
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
=
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
commit to user 32
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
=
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.
Gambar 3.8. Pembebanan Setengah Kuda-kuda Akibat Beban Mati
commit to user 33
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
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
= 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
commit to user 34
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
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
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
commit to user 35
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
= 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 d
d’’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
= 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
commit to user 36
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
= 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 = 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
commit to user 37
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
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 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
commit to user 38
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
= 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
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
commit to user 39
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
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
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
commit to user 40
Perencanaan Struktur Mall 3 Lantai RAB
BAB 3 Perencanaan Atap
b. Beban Hidup
