Jarak tulangan s =
n b
= 6
1000 = 166
160 mm
Jarak maksimum s = 2 x h = 2 x 120 = 200 mm
As yang timbul = 6 x ¼ x 3,14 x 10
2
= 471 As ………ok
Jadi digunakan 10
– 160 mm
d. Penulangan Tumpuan Arah Y Tumpuan Tengah
b = 1000 mm, d = 85 mm
Mu = Mty = 877,056 kg m = 877,056.10
4
N.mm
Mn =
8 .
10 056
, 877
4
x Mu
= 1096,32.10
4
Rn =
2
.d b
Mn
=
2 4
85 1000
10 1096,32.
x = 1,517 Nmm
2
m = 294
, 11
25 .
85 ,
240 .
85 ,
c f
fy
perlu
=
fy
m Rn
x m
. .
2 1
1 1
=
240
294 ,
11 .
517 ,
1 .
2 1
1 294
, 11
1 x
= 0,0065
perlu
min
digunakan
perlu
= 0,0065
As = . b . d
= 0,0065 . 1000 . 85 = 552,5 mm
2
Jumlah tulangan n n =
2
. .
4 1
d As
=
2
10 .
14 ,
3 .
4 1
552,5
= 7,03 8 bh
Jarak tulangan s =
n b
= 8
1000 = 125 mm
Jarak maksimum s = 2 x h = 2 x 120 = 240 mm
As yang timbul = 8 x ¼ x 3,14 x 10
2
= 628 As ………ok
Jadi digunakan 10
– 160 mm
e. Penulangan Tumpuan Arah X
Tumpuan Tepi b = 1000 mm, d = 95 mm
Mu = Mtix = 328,896kg m = 328,896.10
4
N.mm
Mn =
8 .
10 896
, 328
4
x Mu
= 411,12.10
4
Rn =
2
.d b
Mn
=
2 4
95 1000
10 411,12.
x = 0,455 Nmm
2
m = 294
, 11
25 .
85 ,
240 .
85 ,
c f
fy
perlu
=
fy
m Rn
x m
. .
2 1
1 1
=
240 294
, 11
. 455
, .
2 1
1 294
, 11
1 x
= 0,0019
perlu
min
digunakan
min
= 0,0025
As = . b . d
= 0,0025 . 1000 . 95 = 237,5 mm
2
Jumlah tulangan n n =
2
. .
4 1
d As
=
2
10 .
14 ,
3 .
4 1
5 ,
237
= 3,025 4 bh
Jarak tulangan s =
n b
= 4
1000 = 250
240 mm
Jarak maksimum s = 2 x h = 2 x 120 = 240 mm
As yang timbul = 4 x ¼ x 3,14 x 10
2
= 314 As ………ok
Jadi digunakan 10
– 240 mm
f. Penulangan Tumpuan Arah Y
Tumpuan Tepi b = 1000 mm, d = 68 mm
Mu = Mtiy = 279,561 kg m = 279,561.10
4
N.mm
Mn =
8 .
10 561
, 279
4
x Mu
= 349,451.10
4
Rn =
2
.d b
Mn
=
2 4
85 1000
10 349,451.
x = 0,483 Nmm
2
m = 294
, 11
25 .
85 ,
240 .
85 ,
c f
fy
perlu
=
fy
m Rn
x m
. .
2 1
1 1
=
240 294
, 11
. 483
, .
2 1
1 294
, 11
1 x
= 0,00203
perlu
min
digunakan
min
= 0,0025
As = . b . d
= 0,0025 . 1000 . 85 = 212,5 mm
2
Jumlah tulangan n
n =
2
. .
4 1
d As
=
2
10 .
14 ,
3 .
4 1
212,5
= 2,70 4 bh
Jarak tulangan s =
n b
= 4
1000 = 250
240 mm
Jarak maksimum s = 2 x h = 2 x 120 = 240 mm
As yang timbul = 4 x ¼ x 3,14 x 10
2
= 314 As ………ok
Jadi digunakan 10
– 240 mm
REKAPITULASI TULANGAN
Tulangan Lapangan Arah X =
10 – 240 mm
Tulangan Lapangan Arah Y =
10 – 240 mm
Tulangan Tumpuan Tengah arah X = 10
– 160 mm
Tulangan Tumpuan Tengah Arah Y = 10
– 160 mm
Tulangan Tumpuan Tepi Arah X =
10 – 240 mm
Tulangan Tumpuan Tepi Arah Y =
10 – 240 mm
