commit to user Tugas Akhir
Perencanaan Struktur Gedung Sekolah 2 Lantai dan RAB
Bab 5 Perencanaan Plat Lantai dan Atap
400 400
400 400
400 400
400 400
400 400
400 400
400
6200 200
400 400
600
A A
A A
A B
A B
A A
A A
A
B B
B B
B A
A B
B B
B B
K
E F
F F
F F
F F
F F
F F
F E
D H
I K
L M
M N
250 250
250 250
D C
D H
I D
BAB 5 PERENCANAAN PLAT LANTAI ATAP
5.1. Perencanaan Plat Lantai
Gambar 5.1 Denah Plat lantai 118
commit to user Tugas Akhir
119 Perencanaan Struktur Gedung Sekolah 2 Lantai dan RAB
Bab 5 Perencanaan Plat Lantai dan Atap
5.2. Perhitungan Pembebanan Plat Lantai
a. Beban Hidup qL Berdasarkan PPIUG 1989 yaitu :
Beban hidup fungsi gedung sekolah = 250 kgm
2
b. Beban Mati qD Berat keramik 1 cm
= 0,01 x 2400 x 1 = 24
kgm
2
Berat Spesi 2 cm = 0,02 x 2100 x 1
= 42 kgm
2
Berat Pasir 2 cm = 0,02 x 1600 x 1
= 32 kgm
2
Berat plat sendiri = 0,12 x 2400 x 1
= 288 kgm
2
Berat plafond + instalasi listrik = 25 kgm
2
+ qD = 411
kgm
2
c. Beban Ultimate qU Untuk tinjauan lebar 1 m plat maka :
qU = 1,2 qD + 1,6 qL = 1,2 . 411 + 1,6 . 250
= 973,20 kgm
2
5.3. Perhitungan Momen
a.Tipe pelat A kanopi
A
Lx Ly
Gambar 5.2 Plat tipe A
commit to user Tugas Akhir
120 Perencanaan Struktur Gedung Sekolah 2 Lantai dan RAB
Bab 5 Perencanaan Plat Lantai dan Atap 1,0
4,0 4,0
Lx Ly
= =
Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 4,0
2
.26 = 404,85 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 4,0
2
.21 = 327 kg m
Mtx = - 0,001.qu . Lx
2
. x = - 0.001 .973,2. 4,0
2
.60 = -934,28 kg m Mty= - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 4,0
2
.55 = - 856,42 kgm
b.Tipe pelat B
B
Lx Ly
Gambar 5.3 Plat tipe B
1,0 4,0
4,0 Lx
Ly =
= Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 4,0
2
.21 = 327 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 4,0
2
.21 = 327 kg m
Mtx = - 0,001.qu . Lx
2
. x = - 0.001 .973,2. 4,0
2
.52 = - 809,71 kg m Mty = - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 4,0
2
.52 = - 809,71 kgm
commit to user Tugas Akhir
121 Perencanaan Struktur Gedung Sekolah 2 Lantai dan RAB
Bab 5 Perencanaan Plat Lantai dan Atap c. Tipe pelat C
C
Lx Ly
Gambar 5.8 Plat tipe C 2,0
2,0 4,0
Lx Ly
= =
Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.85 = 330,88 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.39 = 151,82 kg m
Mty = - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 2,0
2
.119 = - 463,24 kgm d. Tipe pelat D
D
Lx Ly
Gambar 5.11 Plat tipe J 1,25
2,0 2,5
Lx Ly
= =
Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.35 = 136,25 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.18 = 70,07 kg m
Mtx = - 0,001.qu . Lx
2
. x = - 0.001 .973,2. 2,0
2
.74= - 288,067 kg m Mty = - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 2,0
2
.57 = - 221,889 kgm
commit to user Tugas Akhir
122 Perencanaan Struktur Gedung Sekolah 2 Lantai dan RAB
Bab 5 Perencanaan Plat Lantai dan Atap e.Tipe pelat E
E
Lx
Ly
Gambar 5.6 Plat tipe E 2,5
2,0 5,0
Lx Ly
= =
Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.61 = 237,46 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.16 = 62,28 kg m
Mtx = - 0,001.qu . Lx
2
. x = - 0.001 .973,2. 2,0
2
.122= - 474,92 kg m Mty = - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 2,0
2
.79 = - 307,53 kgm
f.Tipe pelat F
F
Lx Ly
Gambar 5.7 Plat tipe F 2,0
2,0 4,0
Lx Ly
= =
Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.55 = 214,104 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,0
2
.21 = 81,75 kg m
Mtx = - 0,001.qu . Lx
2
. x = - 0.001 .973,2. 2,0
2
.114 = - 443,78 kg m Mty = - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 2,0
2
.78 = - 303,64 kgm
commit to user Tugas Akhir
123 Perencanaan Struktur Gedung Sekolah 2 Lantai dan RAB
Bab 5 Perencanaan Plat Lantai dan Atap g. Tipe pelat H
H
Lx Ly
Gambar 5.9 Plat tipe H 1,6
2,5 4,0
Lx Ly
= =
Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,5
2
.37 = 225,053 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 2,5
2
.16 = 97,32 kg m
Mtx = - 0,001.qu . Lx
2
. x = - 0.001 .973,2. 2,5
2
.79 = - 480,518 kg m Mty = - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 2,5
2
.57 = - 346,703 kgm
h .Tipe pelat I
I
Lx Ly
Gambar 5.10 Plat tipe I 1,25
4,0 5,0
Lx Ly
= =
Mlx = 0,001.qu . Lx
2
. x = 0.001. 973,2. 4
2
.42 = 591,71 kg m
Mly = 0,001.qu . Lx
2
. x = 0.001. 973,2. 4
2
.27 = 435,49 kg m
Mtx = - 0,001.qu . Lx
2
. x = - 0.001 .973,2. 4
2
.92 = - 1323,55 kg m
Mty = - 0,001.qu . Lx
2
. x = - 0.001 . 973,2. 4
2
.76 = - 1152,27 kgm
commit to user Tugas Akhir
124 Perencanaan Struktur Gedung Sekolah 2 Lantai dan RAB
Bab 5 Perencanaan Plat Lantai dan Atap
i. Penulangan Plat Lantai
