commit to user 169
Tugas Akhir Perencanaan Struktur Gedung Swalayan 2 lantai RAB
BAB 5 Plat Lantai
As yang timbul = 6. ¼. .8
2
= 301,44 273,6 As ….ok
Dipakai tulangan 8 – 170 mm
5.2.5. Penulangan Lapangan Arah Y
Mu = 216,58 kgm = 2,1658.10
6
Nmm Mn
=
Mu
=
6 6
10 .
707 ,
2 8
, 10
. 1658
, 2
Nmm
Rn =
2
.dx b
Mn
2 6
68 ×
1000 10
. 707
, 2
0,585 Nmm
2
m =
29 ,
11 25
× 85
, 240
. 85
, c
f fy
perlu
=
fy Rn
. m
2 1
1 .
m 1
=
× 29
, 11
1 240
0,585 ×
29 ,
11 ×
2 1
1
= 0,00123
perlu max
perlu min
, di pakai
min
As
perlu
=
min
. b . dx = 0,0025 × 1000 × 68
= 170 mm
2
Digunakan tulangan 8 As
= ¼ . . 8
2
= 50,24 mm
2
Jumlah tulangan =
38 ,
3 24
, 50
170
~ 4 buah. Jarak tulangan dalam 1 m
1
=
250 4
1000
mm ~ 200 mm.
commit to user 170
Tugas Akhir Perencanaan Struktur Gedung Swalayan 2 lantai RAB
BAB 5 Plat Lantai
Jarak maksimum = 4x h = 4 x 100 = 400 mm
As yang timbul = 4. ¼. .8
2
= 200,96 170 As ….ok
Dipakai tulangan 8 – 200 mm
5.2.6. Penulangan Tumpuan Arah X
Mu = 521,56 kgm = 5,2156.10
6
Nmm Mn
=
Mu
=
6 6
10 .
519 ,
6 8
, 10
. 2156
, 5
Nmm
Rn =
2
.dx b
Mn
2 6
76 ×
1000 10
. 519
, 6
1,13 Nmm
2
m =
29 ,
11 5
2 ×
85 ,
240 .
85 ,
c f
fy
perlu
=
fy Rn
. m
2 1
1 .
m 1
=
× 29
, 11
1 240
1,13 ×
29 ,
11 ×
2 1
1
= 0,0048
perlu max
perlu min
, di pakai
min
As
perlu
=
min
. b . dx = 0,0048 × 1000 × 76
= 367,88 mm
2
Digunakan tulangan 8 = ¼ . . 8
2
= 50,24 mm
2
Jumlah tulangan =
32 ,
7 24
, 50
88 ,
367
~ 8 buah. Jarak tulangan dalam 1 m
1
= 125
8 1000
mm.
commit to user 171
Tugas Akhir Perencanaan Struktur Gedung Swalayan 2 lantai RAB
BAB 5 Plat Lantai
Jarak maksimum = 8 x h = 8 x 100 = 800 mm
As yang timbul = 8. ¼. .8
2
= 401,92 367,88 As ….ok
Dipakai tulangan 8 – 125 mm
5.2.7. Penulangan Lapangan Arah Y
Mu = 349,18 kgm = 3,4918.10
6
Nmm Mn
=
Mu
=
6 6
10 .
365 ,
4 8
, 10
. 4918
, 3
Nmm
Rn =
2
.dx b
Mn
2 6
68 ×
1000 10
. 365
, 4
0,945 Nmm
2
m =
29 ,
11 25
× 85
, 240
. 85
, c
f fy
perlu
=
fy Rn
. m
2 1
1 .
m 1
=
× 29
, 11
1 240
0,945 ×
29 ,
11 ×
2 1
1
= 0,004
perlu max
perlu min
, di pakai
min
As
perlu
=
min
. b . dx = 0,004 × 1000 × 68
= 272 mm
2
Digunakan tulangan 8 As
= ¼ . . 8
2
= 50,24 mm
2
Jumlah tulangan =
41 ,
5 24
, 50
272
~ 6 buah.
commit to user 172
Tugas Akhir Perencanaan Struktur Gedung Swalayan 2 lantai RAB
BAB 5 Plat Lantai
Jarak tulangan dalam 1 m
1
=
66 ,
166 6
1000
mm ~ 150 mm. Jarak maksimum
= 6x h = 6 x 100 = 600 mm As yang timbul
= 6. ¼. .8
2
= 301,44 272 As ….ok
Dipakai tulangan 8 – 150 mm
5.2.8. Rekapitulasi Tulangan
