TUGAS STRUKTUR BANGUNAN BETON
2014
Bangunan
BAB IV PERENCANAAN PENULANGAN PELAT
IV.1
Pengantar
Perencanaan stuktur sekunder meliputi struktur pelat, tangga, dan balok anak. IV.2
Perencanaan Pelat
Pembebanan Pada Pelat A. Pelat Atap Tabel Tabel 4.1 Perhitungan beban pada pelat atap
Nama Beban mat Pelat Plafond Penggantung Pumbling tegel sanitasi Spesi T!tal beban mat "#L$ Beban 'dup Beban pada lantai T!tal beban 'dup "LL$
Berat
Satuan
288 7 11 10 24 20 21 %&1
kg/m2 kg/m2 kg/m2 kg/m2 kg/m2 kg/m2 kg/m2 kg/m2
240 kg/m2 2() kg/m2
*!mbna+ Pembebanan
ombinasi pembebanan !ang digunakan bedasarkan S"# 0$%2847%201$ pasal &.2.1 'otal 'otal beban pada pelat atap (u ) 1.2 *+ 1.- ++ (u ) 1.2 $81 1.- 240 ) 841.2 kg/m 2
Citra Putri Kalingga Indrayon Manalu
42
3111100078
3111100089
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TUGAS STRUKTUR BANGUNAN BETON
2014
Bangunan B. Pelat Lanta Tabel Tabel 4.2 Perhitungan beban pada pelat lantai
Nama Beban mat Pelat Plafond Penggantung Spesi spal T!tal beban mat "#L$ Beban 'dup Beban pada atap Beban air u3an T!tal beban 'dup "LL$ a,t!r redu,+ 2)/
Berat
Satuan
288 7 11 21 14 %(1
kg/m2 kg/m2 kg/m2 kg/m2 kg/m2 ,g-m2
100 kg/m2 20 kg/m2 0
kg/m2
*!mbna+ Pembebanan
ombinasi pembebanan !ang digunakan bedasarkan S"# 0$%2847%201$ pasal &.2.1 'otal 'otal beban pada pelat lantai (u ) 1.2 *+ 1.- ++ (u ) 1.2 $41 1.- &- ) -2,8 kg/m 2 IV. IV.% Penu Penula lang ngan an Pela Pelatt
'aapan 'aapan !ang digunakan dalam menentukan tulangan lentur pelat antara lain5 1. 6enent 6enentuka ukan n data%da data%data ta d, f!, f!, fc dan 6u 6u 2. 6ene 6enent ntuk ukan an bata batasan san arg argaa tula tulang ngan an deng dengan an meng menggu guna naka kan n rasio rasio tula tulang ngan an !ang !ang dis!aratkan sebagai berikut5
ρ b
=
0.8 β 1
fc
-00 -00 + fy
fy
ρma = 0.7ρ b ρ min
=
0.2
S"# 0$%2847%201$ lampiran B.8.4.2 S"# 0$%2847%201$ lampiran B.10.$.$
fc
fy
9itung rasio tulangan !ang dibutukan5
S"# 0$%2847%201$ pasal 10..2
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TUGAS STRUKTUR BANGUNAN BETON
Bangunan 6enentukan luas tulangan s dari
ρ !ang didapat
s
ρ=
b d
#ambl C!nt!' Per'tungan Penulangan Pelat Atap Tpe A
dapun data%data perancangan untuk penulangan pelat atap sebagai berikut 5
•
*imensi pelat *imensi balok induk melintang *ime *imens nsii balo balok k indu induk k melin melinta tang ng 'ebal pelat *iameter tulangan rencana 6utu tulangan ba3a f!
•
6utu beton fc ) $ 6pa
•
;1 ) 0.8 % 0,08fc%$0
• • • • •
0 $0 cm2 2/$ cm $0/4 $0/40 0 cm 120 mm 10 mm $0 6Pa
) 0.8 < 0.008 $%$0 ) 0,81 •
'ebal 'ebal selimut beton
40 mm
•
d ) 120%40% 1/210 ) 7 mm d! ) 120%40%10% 1/210 ) 0 mm d
120
Gambar 3.1 Potongan pelat
Per'tungan !men Pelat
(u ) -2.8 kg/m 2 d ) 7 mm d! ) - mm 0.8 x 0.81 x $
ρ b
=
ρ ma
$0
-00 = 0.04$ -00 + $0
= 0.7 x 0.04$ = 0.0$2
d!
2014
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TUGAS STRUKTUR BANGUNAN BETON
Bangunan m=
fy 0.8 fc
=
$0 0.8 x $
= 11,7-
$0/40 2 / $
0 $ / 0 2
$0
Gambar 3.2 Pelat tipe tipe A pada atap
+ ) 00 < $0/2 $0/2 ) 20 cm +! ) $0 < 2/2 20/2 ) $27, cm
0 4 4
2014
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TUGAS STRUKTUR BANGUNAN BETON
Bangunan
2014
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TUGAS STRUKTUR BANGUNAN BETON
2014
Bangunan
Penulangan ara' 3
6ul = ) 72
PB# tabel 1$.$.1 tipe >
6ul ) 6ut%
) 0,001 (u + 2 x ) 0,001 -2.8 .2 2 72 ) 10&.704 kgm ) 10&7041 "mm
"n =
ρ =
!u 0.8 x 1000 x dx 2
1 − 11,7- 1
1−
=
10&7041 0.8 x 1000 x 7 2
= 2.4$ "/mm2
2 x 11,7- x 2.4$
= 0.0072-8
$0
@ pa pakai ) 0, 0,007$ ? @ mi min ) 0.00422
0.2
? @min )
fc
fy
S"# 0$ 0$%28 %2847%201$ pa pasal sal 10 10..2
s perlu ) @ b d ) 0,007$ 1000 7 ) 4.07 mm 2 A$ perlu Aumla tulangan tiap meter ) Smaks
) 40 mm
Aarak tulangan S )
78.4
S"# 0$%2847%201$ pasal 7.-. 1000
S pakai
A$ 10 mm
= 4.07 = -.&4 ≈ 7 #uah
7
= 142.87mm
) 14$ mm
s pasang ) Aumla tulangan tiap meter diameter tulangan ) 7 78.4 ) 4&.78 mm 2 ? s perlu ) 4.07 mm 2 *igunakan tulangan lentur 4#1)51(% " A+ Pa+ang 6 7(0.4& mm 2 $ Penulangan ara' 8
6ul! = ) 41 dipakai ) 11 11 PB# tabel 1$.$.1 tipe > > 6ut!= ) 11
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TUGAS STRUKTUR BANGUNAN BETON
2014
Bangunan ) -&4.184kgm ) -&418$& "mm
"n =
ρ =
!u 0.8 x 1000 x dy 2
1 − 11,7- 1
1−
=
-&418$& 0.8 x 1000 x - 2
= 2.0 "/mm2
2 x 11,7- x $.47
= 0.00-08
$0
@ pa pakai ) 0, 0,00-1 ? @ mi min ) 0.00422
0.2
? @min )
fc
fy
S"# 0$ 0$%28 %2847%201$ pa pasal sal 10 10..2
s perlu ) @ b d ) 0,010- 1000 - ) $&.8 mm 2 A$ perlu Aumla tulangan tiap meter ) Smaks
) 40 mm
Aarak tulangan S )
78.4
S"# 0$%2847%201$ pasal 7.-. 1000
S pakai
A$ 10 mm
= $&.8 = .04 ≈ - #uah
-
= 1-7mm
) 1-7 mm
s pasang ) Aumla tulangan tiap meter diameter tulangan ) - 78.4 ) 471.24 mm 2 ? s perlu ) $&8.8 mm 2 *igunakan tulangan lentur #1)514 " A+ Pa+ang 6 %0&.7& mm 2 $ Peritungan penulangan pelat atap lainn!a disa3ikan dalam tabel $.$ dibaa ini 5
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Tabel Tabel 4.3 Perhitungan penulangan pelat atap
Pelat
## B
## E
> G
> *
> H >
Ara '
#men+ "mm$
L3 "cm$
L8 "cm$
ul3 6 5mtl3
Rn3 "n-mm2$
:en+
;
to% a!s
21
7
-2,8
$1&80$,20
0,71
D
2
-
-2,8
$0&117&,000
0,&1
C
8$
7-
-2,8
12-$10$2,&0
2,7$
7
-8
-2,8 +uiFel
7$&11$&,840
2,00
C
0
0
$0
00
20
20
$2
480
9m
#3 "mm $
$,4 7
4,2 1
to% a!s
D
C
0
12
40
107,
0,2 1
to% a!s
D
C
12
$0
10
$40
1,2 1
one% a!s
D
C
12
700
10
-&0
2,2 1
one% a!s
D C
12
00
10
4&0
$,2
one%
$1
7-
-2,8
08748-,880
1,10
-0
-8
-2,8
$&02$1,40
0,11
12
7-
-2,8
77-08,70
0,17
7
-8
-2,8
487&47-,000
1,$2
n
0,002 1 0,002 7 0,008 2 0,00 & 0,00$ 2 0,000 $ 0,000 0,00$ &
-2,8
77-08,70 200&-181,00 0
,4$
0,000 0,017 $
-2,8
77-08,70
0,17
0,000
12
7-
-2,8
7
-8
12
7-
Citra Putri Kalingga Indrayon Manalu
0,17
42
3111100078
3111100089
S "mm$
*et
2
00 2 # 1) 5 7))
$
$$4 % # 1) 5 %%(
8
12 & # 1) 5 127
-
1-7 # 1) 5 14
200 7 # & 5 2))
1
1000 1 # & 5 1)))
1
1000 1 # & 5 1)))
-
1-7 # & 5 1(4
1
1000 1 # & 5 1)))
24
42 2(# & 5 (2
1
1000 1 # & 5 1)))
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I
1 D
a!s 7
-8
-2,8
101$4-21,00 0
Citra Putri Kalingga Indrayon Manalu
2,74
42
3111100078
3111100089
0,008 2
12
84 12 # & 5 &%
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#ambl C!nt!' Per'tungan Penulangan Pelat Lanta Tpe A
dapun data%data perancangan untuk penulangan pelat atap sebagai berikut 5
•
*imensi pelat *imensi balok induk melintang *ime *imens nsii balo balok k indu induk k meli melint ntan ang g 'ebal pelat *iameter tulangan rencana 6utu tulangan ba3a f!
•
6utu beton fc ) $ 6pa
•
;1 ) 0.8 % 0,08fc%$0
• • • • •
0 $0 cm2 $0/4 cm $0/4 $0/40 0 cm 120 mm 10 mm $0 6Pa
) 0.8 < 0.008 $%$0 ) 0,81 •
'ebal 'ebal selimut beton
40 mm
•
d ) 120%40% 1/210 ) 7 mm d! ) 120%40%10% 1/210 ) -mm d
120 Gambar 3.3 Potongan pelat
Per'tungan !men Pelat
(u ) 841.2 kg/m 2 d ) 7 mm d! ) - mm 0.8 x 0.81 x $
ρ b
=
$0
-00 = 0.04$ -00 + $0
d!
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$0/4 $ 0 / 4 0
4 $ / 0 2
$0
Gambar 3.4 Pelat tipe A pada pada lantai
+ ) 00 < $0/2 $0/2 ) 20 cm
0 4 4
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) 0,001 841.2 841.2 .22 72 ) 1-$7.71 kgm ) 1-$771 "mm
"n "n
=
!u 0.8 x 1000 x dx
1 − ρ = 11,7- 1
1−
2
=
1-$771 0.8 x 1000 x 7
2
= $.-4 "/mm2
2 x 11,7- x $.-4
= 0.01112
$0
@ pak pakai ai ) 0. 0.0111 ? @ min ) 0.00422
0.2
? @min )
fc
fy
S"# 0$ 0$%2847%201$ pasa asal 10 10..2
s perlu ) @ b d ) 0,007$ 1000 7 ) 8$4.48 mm 2 A$ perlu Aumla tulangan tiap meter ) Smaks
) 40 mm
Aarak tulangan S )
78.4
S"# 0$%2847%201$ pasal 7.-. 1000
S pakai
A$ 10 mm
= 8$4.48 = 10.-2 ≈ 11 #uah
11
= &0.&0&1mm
) &1 mm
s pasang ) Aumla tulangan tiap meter diameter tulangan ) 11 78.4 ) 8-$.&4 mm 2 ? s perlu ) 8$4.48 mm 2
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@ pak pakai ai ) 0, 0,00&1 ? @ mi min ) 0.00422
S"# 0$ 0$%2847%201$ pasa asal 10 10..2
s perlu ) @ b d ) 0,00&1 1000 - ) -84. mm 2 A$ perlu Aumla tulangan tiap meter ) Smaks
) 40 mm
78.4
S"# 0$%2847%201$ pasal 7.-. 1000
Aarak tulangan S ) S pakai
A$ 10 mm
= -84. = 8.72 ≈ & #uah
&
= 111.111mm
) 112 mm
s pasang ) Aumla tulangan tiap meter diameter tulangan ) & 78.4 ) 70-.8-mm 2 ? s perlu ) -84. mm 2 *igunakan tulangan lentur 0#1)5112 " A+ Pa+ang 6 &(.77 mm 2 $ Peritungan penulangan pelat atap lainn!a disa3ikan dalam tabel $.$ dibaa ini 5 Pelat
Ara'
##
C
B
D
#men+ "mm$
0
$0
#3 "mm$
ul3 6 5mtl3
2
7
841,2
11827&44,&-0
2
-
841,2
447&221,7-0
L3 "cm$
L8 "cm$
=m
:en+
;
20
$20
4,8-
to% a!s
"
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a!s I
D
12 Tabel Tabel 4.4 Perhitungan penulangan pelat lantai
72
841,2
242$--,440