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Tugas Akhir Perencanaan St rukt ur Anggaran Biaya Gedung K uliah 2 L ant ai
165
BAB 5 Plat L ant ai
Cek kapasitas lentur :
a = b
c f
fy As
ada
. .
85 ,
. =
1000 .
30 .
85 ,
240 .
314 = 2,96mm
M
n
= As
ada
.fy.d-a2 = 314.240 95-2,962
= 7,048.10
6
Nmm Mn ada Mn = 7,048.10
6
6
10 .
525 ,
5 → OK ☺
5.8. Penulangan lapangan arah y
Mu = 401,94 kgm = 4,0194.10
6
Nmm Mn =
φ Mu
=
6 6
10 .
024 ,
5 8
, 10
. 5884
, 1
= Nmm
Rn =
=
2
.dx b
Mn =
2 6
95 .
1000 10
. 024
, 5
0,56 Nmm
2
m = 412
, 9
30 .
85 ,
240 .
85 ,
= =
c f
fy
ρ
perlu
= ⎟
⎟ ⎠
⎞ ⎜
⎜ ⎝
⎛ −
− fy
Rn .
m 2
1 1
. m
1
= ⎟⎟
⎠ ⎞
⎜⎜ ⎝
⎛ −
− 240
56 ,
. 412
, 9
. 2
1 1
. 412
, 9
1 =
0,00236 ρ ρ
max
ρ ρ
min
, di pakai ρ
min
= 0,0025 As
perlu
= ρ
min
. b . dx = 0,0025. 1000 . 95
= 237,5
mm
2
Digunakan tulangan ∅ 10
As = ¼ .
π . 10
2
= 78,5
mm
2
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Tugas Akhir Perencanaan St rukt ur Anggaran Biaya Gedung K uliah 2 L ant ai
166
BAB 5 Plat L ant ai
Jmlah tulangan, n =
As perlu
As
= 5
, 78
5 ,
237 = 3,025
∼ 4
Jarak tulangan, S = n
b
= 4
1000 =
250 mm
Jarak maksimum = 2 x h = 2 x 120
= 240
mm As ada
=4. ¼ . π . 10
2
= 314
mm
2
As 237,5 mm
2
…................... OK ☺ Dipakai tulangan
∅ 10 – 200 mm
Cek kapasitas lentur : a =
b c
f fy
As
ada
. .
85 ,
. =
1000 .
30 .
85 ,
240 .
314 = 2,96 mm
M
n
= As
ada
.fy.d-a2 = 314.240.95-2,962
= 7,0476.10
6
Nmm Mn ada Mn
7,0476.10
6
Nmm
6
10 .
024 ,
5 Nmm
→ OK ☺
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Tugas Akhir Perencanaan St rukt ur Anggaran Biaya Gedung K uliah 2 L ant ai
167
BAB 5 Plat L ant ai
5.9. Rekapitulasi Tulangan
Dari perhitungan diatas diperoleh : Tulangan tumpuan arah x
∅ 10 – 150 mm
Tulangan tumpuan arah y
∅ 10 – 150 mm
Tulangan lapangan arah x
∅ 10 – 200 mm
Tulangan lapangan arah y
∅ 10 – 200 mm` Tabel 5.2. Penulangan Plat Lantai
Tipe Plat
Momen Tulangan Lapangan
Tulangan Tumpuan Mlx
kgm Mly
kgm Mtx
kgm Mty
kgm Arah x
mm Arah y
mm Arah x
mm Arah y
mm A1
225,08 225,08 -546,64 -546,64 ∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200 A2
442,13 401,94 -168,81 -209,00 ∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200
B1 289,39 160,78 -659,18 -578,79 ∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200
B2 249,20 152,74 -554,68 -458,21
∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200 B3 345,67 144,70 -594,87 -458,21 ∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200
B4 300,11 300,11 -743,14 -743,14 ∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200
B5 146,48 42,87 296,54 203,65
∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200 C1
153,63 89,32 -367,99 - 267,96
∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200 C2
153,63 92,89
- 335,84 - 271,53
∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200 C3
128,62 60,74
- 271,53 - 203,65
∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200 C4
146,50 75,03 -407,23 -278,68 ∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200
C5 75,03 75,03 -185,78 -185,78
∅ 10– 150 ∅ 10– 150 ∅ 10 – 200 ∅ 10 – 200
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Tugas Akhir Perencanaan St rukt ur Rencana Anggararn Biaya Gedung K uliah 2 L ant ai
BA B 6 Balok Anak 168
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
2 2 2
2 2
2 2 2
2 2
2 2 2
2 2 2
2 2 2
2 2 2
2 2
2 2 2 2
3 3
3 3 10 11 1 1
5 3 3
3 3
1 0 11
11 5
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
7 7
4 4
4 4
6 6
6 6
3 3
3 3
3 3
3 3
3 3 3 3
3 3
3 3 3 3
3 3
3 3
3 3
6 6
6 6
8 9
4 4
5 4
5 3 3
3 3 8
9 4
4 5
4 5
BAB 6 PERENCANAAN BALOK ANAK
